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+// GxEPD2_PP_WiFi_Example : Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
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+// Requires HW SPI and Adafruit_GFX. Caution: these e-papers require 3.3V supply AND data lines!
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+//
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+// Display Library based on Demo Example from Good Display: http://www.good-display.com/download_list/downloadcategoryid=34&isMode=false.html
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+//
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+// BMP handling code extracts taken from: https://github.com/prenticedavid/MCUFRIEND_kbv/tree/master/examples/showBMP_kbv_Uno
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+//
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+// Author: Jean-Marc Zingg
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+//
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+// Version: see library.properties
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+//
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+// Library: https://github.com/ZinggJM/GxEPD2_PP
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+//
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+#include <Adafruit_GFX_RK.h>
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+#include <GxEPD2.h>
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+
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+// Note: only bitmap download from http: works on Particle, would need help for https:
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+
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+// Supporting Arduino Forum Topics:
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+// Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0
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+// Good Dispay ePaper for Arduino : https://forum.arduino.cc/index.php?topic=436411.0
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+
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+// mapping suggestion from Waveshare SPI e-Paper to Particle Photon
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+// A5 MOSI
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+// A4 MISO
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+// A3 SCK
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+// A2 SS
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+// BUSY -> D4, RST -> A0, DC -> A1, CS -> A2, CLK -> A3, DIN -> A5, GND -> GND, 3.3V -> 3.3V
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+// NOTE: it looks like MISO can't be used as general input pin for BUSY.
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+
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+#include <GxEPD2_BW.h>
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+#include <GxEPD2_3C.h>
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+
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+#if defined(PARTICLE)
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+// select one and adapt to your mapping, for buffered drawing, can use full buffer size (full HEIGHT) for Photon
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+GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4)); // GDE0213B1, phased out
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+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4)); // GDEH0213B72
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+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4)); // GDEH0213B73
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+//GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4)); // GDEW0213I5F
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+//GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4)); // GDEW029T5
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+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW < GxEPD2_583, GxEPD2_583::HEIGHT / 2 > display(GxEPD2_583(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_BW < GxEPD2_750, GxEPD2_750::HEIGHT / 2 > display(GxEPD2_750(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+// 3-color e-papers
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+//GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT / 4 > display(GxEPD2_583c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4 > display(GxEPD2_750c(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4));
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+//GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4 > display(GxEPD2_750c_Z08(/*CS=A2*/ SS, /*DC=*/ A1, /*RST=*/ A0, /*BUSY=*/ D4)); // GDEW075Z08 800x480
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+#endif
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+
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+const char* ssid = "........";
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+const char* password = "........";
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+const int httpPort = 80;
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+const int httpsPort = 443;
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+const char* fp_api_github_com = "35 85 74 EF 67 35 A7 CE 40 69 50 F3 C0 F6 80 CF 80 3B 2E 19";
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+const char* fp_github_com = "ca 06 f5 6b 25 8b 7a 0d 4f 2b 05 47 09 39 47 86 51 15 19 84";
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+#if USE_BearSSL
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+const char fp_rawcontent[20] = {0xcc, 0xaa, 0x48, 0x48, 0x66, 0x46, 0x0e, 0x91, 0x53, 0x2c, 0x9c, 0x7c, 0x23, 0x2a, 0xb1, 0x74, 0x4d, 0x29, 0x9d, 0x33};
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+#else
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+const char* fp_rawcontent = "cc aa 48 48 66 46 0e 91 53 2c 9c 7c 23 2a b1 74 4d 29 9d 33";
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+#endif
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+const char* host_rawcontent = "raw.githubusercontent.com";
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+const char* path_rawcontent = "/ZinggJM/GxEPD2/master/extras/bitmaps/";
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+const char* path_prenticedavid = "/prenticedavid/MCUFRIEND_kbv/master/extras/bitmaps/";
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+
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+void showBitmapFrom_HTTP(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color = true);
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+void showBitmapFrom_HTTPS(const char* host, const char* path, const char* filename, const char* fingerprint, int16_t x, int16_t y, bool with_color = true);
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+
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+void showBitmapFrom_HTTP_Buffered(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color = true);
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+void showBitmapFrom_HTTPS_Buffered(const char* host, const char* path, const char* filename, const char* fingerprint, int16_t x, int16_t y, bool with_color = true);
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+
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+void setup()
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+{
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+ Serial.begin(115200);
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+ Serial.println();
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+ Serial.println("GxEPD2_PP_WiFi_Example");
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+
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+ display.init(115200);
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+
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+ if ((display.epd2.panel == GxEPD2::GDEW0154Z04) || false)
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+ {
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+ //drawBitmapsBuffered_200x200();
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+ //drawBitmapsBuffered_other();
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+ }
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+ else
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+ {
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+ //drawBitmaps_200x200();
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+ //drawBitmaps_other();
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+ drawTheOnlyBitmapFromHTTP();
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+ }
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+
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+ //drawBitmaps_test();
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+ //drawBitmapsBuffered_test();
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+
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+ Serial.println("GxEPD2_PP_WiFi_Example done");
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+}
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+
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+void loop(void)
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+{
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+}
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+
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+void drawTheOnlyBitmapFromHTTP()
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+{
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+ int16_t w2 = display.width() / 2;
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+ int16_t h2 = display.height() / 2;
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+ showBitmapFrom_HTTP("www.squix.org", "/blog/wunderground/", "chanceflurries.bmp", w2 - 50, h2 - 50, false);
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+ delay(2000);
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+}
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+
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+void drawBitmaps_200x200()
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+{
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+ int16_t x = (display.width() - 200) / 2;
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+ int16_t y = (display.height() - 200) / 2;
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "logo200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "first200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "second200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "third200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "fourth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "fifth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "sixth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "seventh200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "eighth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+}
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+
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+void drawBitmaps_other()
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+{
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+ int16_t w2 = display.width() / 2;
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+ int16_t h2 = display.height() / 2;
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+ showBitmapFrom_HTTP("www.squix.org", "/blog/wunderground/", "chanceflurries.bmp", w2 - 50, h2 - 50, false);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "betty_1.bmp", fp_rawcontent, w2 - 100, h2 - 160);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "marilyn_240x240x8.bmp", fp_rawcontent, w2 - 120, h2 - 120);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "miniwoof.bmp", fp_rawcontent, w2 - 60, h2 - 80);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "test.bmp", fp_rawcontent, w2 - 100, h2 - 100);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger.bmp", fp_rawcontent, w2 - 160, h2 - 120);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger_178x160x4.bmp", fp_rawcontent, w2 - 89, h2 - 80);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger_240x317x4.bmp", fp_rawcontent, w2 - 120, h2 - 160);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger_320x200x24.bmp", fp_rawcontent, w2 - 160, h2 - 100);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger16T.bmp", fp_rawcontent, w2 - 160, h2 - 100);
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+ delay(2000);
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "woof.bmp", fp_rawcontent, w2 - 100, h2 - 100);
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+ delay(2000);
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+}
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+
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+void drawBitmaps_test()
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+{
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+ int16_t w2 = display.width() / 2;
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+ int16_t h2 = display.height() / 2;
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+ showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126);
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+ delay(2000);
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+}
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+
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+void drawBitmapsBuffered_200x200()
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+{
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+ int16_t x = (display.width() - 200) / 2;
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+ int16_t y = (display.height() - 200) / 2;
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "logo200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "first200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "second200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "third200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "fourth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "fifth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "sixth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "seventh200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "eighth200x200.bmp", fp_rawcontent, x, y);
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+ delay(2000);
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+}
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+
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+void drawBitmapsBuffered_other()
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+{
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+ int16_t w2 = display.width() / 2;
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+ int16_t h2 = display.height() / 2;
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+ showBitmapFrom_HTTP_Buffered("www.squix.org", "/blog/wunderground/", "chanceflurries.bmp", w2 - 50, h2 - 50, false);
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+ delay(2000);
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+ //showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "betty_1.bmp", fp_rawcontent, w2 - 100, h2 - 160);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "marilyn_240x240x8.bmp", fp_rawcontent, w2 - 120, h2 - 120);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "miniwoof.bmp", fp_rawcontent, w2 - 60, h2 - 80);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "test.bmp", fp_rawcontent, w2 - 100, h2 - 100);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger.bmp", fp_rawcontent, w2 - 160, h2 - 120);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger_178x160x4.bmp", fp_rawcontent, w2 - 89, h2 - 80);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger_240x317x4.bmp", fp_rawcontent, w2 - 120, h2 - 160);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger_320x200x24.bmp", fp_rawcontent, w2 - 160, h2 - 100);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger16T.bmp", fp_rawcontent, w2 - 160, h2 - 100);
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+ delay(2000);
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "woof.bmp", fp_rawcontent, w2 - 100, h2 - 100);
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+ delay(2000);
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+}
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+
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+void drawBitmapsBuffered_test()
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+{
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+ int16_t w2 = display.width() / 2;
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+ int16_t h2 = display.height() / 2;
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+ showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126);
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+ delay(2000);
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+}
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+
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+static const uint16_t input_buffer_pixels = 640; // may affect performance
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+
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+static const uint16_t max_row_width = 640; // for up to 7.5" display
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+static const uint16_t max_palette_pixels = 256; // for depth <= 8
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+
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+uint8_t input_buffer[3 * input_buffer_pixels]; // up to depth 24
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+uint8_t output_row_mono_buffer[max_row_width / 8]; // buffer for at least one row of b/w bits
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+uint8_t output_row_color_buffer[max_row_width / 8]; // buffer for at least one row of color bits
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|
|
+uint8_t mono_palette_buffer[max_palette_pixels / 8]; // palette buffer for depth <= 8 b/w
|
|
|
+uint8_t color_palette_buffer[max_palette_pixels / 8]; // palette buffer for depth <= 8 c/w
|
|
|
+
|
|
|
+void showBitmapFrom_HTTP(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color)
|
|
|
+{
|
|
|
+ TCPClient client;
|
|
|
+ bool connection_ok = false;
|
|
|
+ bool valid = false; // valid format to be handled
|
|
|
+ bool flip = true; // bitmap is stored bottom-to-top
|
|
|
+ uint32_t startTime = millis();
|
|
|
+ if ((x >= display.width()) || (y >= display.height())) return;
|
|
|
+ Serial.println(); Serial.print("downloading file \""); Serial.print(filename); Serial.println("\"");
|
|
|
+ Serial.print("connecting to "); Serial.println(host);
|
|
|
+ if (!client.connect(host, httpPort))
|
|
|
+ {
|
|
|
+ Serial.println("connection failed");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ Serial.print("requesting URL: ");
|
|
|
+ Serial.println(String("http://") + host + path + filename);
|
|
|
+ client.print(String("GET ") + path + filename + " HTTP/1.1\r\n" +
|
|
|
+ "Host: " + host + "\r\n" +
|
|
|
+ "User-Agent: GxEPD2_WiFi_Example\r\n" +
|
|
|
+ "Connection: close\r\n\r\n");
|
|
|
+ Serial.println("request sent");
|
|
|
+ while (client.connected())
|
|
|
+ {
|
|
|
+ String line = client.readStringUntil('\n');
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ connection_ok = line.startsWith("HTTP/1.1 200 OK");
|
|
|
+ if (connection_ok) Serial.println(line);
|
|
|
+ //if (!connection_ok) Serial.println(line);
|
|
|
+ }
|
|
|
+ if (!connection_ok) Serial.println(line);
|
|
|
+ //Serial.println(line);
|
|
|
+ if (line == "\r")
|
|
|
+ {
|
|
|
+ Serial.println("headers received");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!connection_ok) return;
|
|
|
+ // Parse BMP header
|
|
|
+ if (read16(client) == 0x4D42) // BMP signature
|
|
|
+ {
|
|
|
+ uint32_t fileSize = read32(client);
|
|
|
+ uint32_t creatorBytes = read32(client);
|
|
|
+ uint32_t imageOffset = read32(client); // Start of image data
|
|
|
+ uint32_t headerSize = read32(client);
|
|
|
+ uint32_t width = read32(client);
|
|
|
+ uint32_t height = read32(client);
|
|
|
+ uint16_t planes = read16(client);
|
|
|
+ uint16_t depth = read16(client); // bits per pixel
|
|
|
+ uint32_t format = read32(client);
|
|
|
+ uint32_t bytes_read = 7 * 4 + 3 * 2; // read so far
|
|
|
+ if ((planes == 1) && ((format == 0) || (format == 3))) // uncompressed is handled, 565 also
|
|
|
+ {
|
|
|
+ Serial.print("File size: "); Serial.println(fileSize);
|
|
|
+ Serial.print("Image Offset: "); Serial.println(imageOffset);
|
|
|
+ Serial.print("Header size: "); Serial.println(headerSize);
|
|
|
+ Serial.print("Bit Depth: "); Serial.println(depth);
|
|
|
+ Serial.print("Image size: ");
|
|
|
+ Serial.print(width);
|
|
|
+ Serial.print('x');
|
|
|
+ Serial.println(height);
|
|
|
+ // BMP rows are padded (if needed) to 4-byte boundary
|
|
|
+ uint32_t rowSize = (width * depth / 8 + 3) & ~3;
|
|
|
+ if (depth < 8) rowSize = ((width * depth + 8 - depth) / 8 + 3) & ~3;
|
|
|
+ if (height < 0)
|
|
|
+ {
|
|
|
+ height = -height;
|
|
|
+ flip = false;
|
|
|
+ }
|
|
|
+ uint16_t w = width;
|
|
|
+ uint16_t h = height;
|
|
|
+ if ((x + w - 1) >= display.width()) w = display.width() - x;
|
|
|
+ if ((y + h - 1) >= display.height()) h = display.height() - y;
|
|
|
+ if (w <= max_row_width) // handle with direct drawing
|
|
|
+ {
|
|
|
+ valid = true;
|
|
|
+ uint8_t bitmask = 0xFF;
|
|
|
+ uint8_t bitshift = 8 - depth;
|
|
|
+ uint16_t red, green, blue;
|
|
|
+ bool whitish, colored;
|
|
|
+ if (depth == 1) with_color = false;
|
|
|
+ if (depth <= 8)
|
|
|
+ {
|
|
|
+ if (depth < 8) bitmask >>= depth;
|
|
|
+ bytes_read += skip(client, 54 - bytes_read); //palette is always @ 54
|
|
|
+ for (uint16_t pn = 0; pn < (1 << depth); pn++)
|
|
|
+ {
|
|
|
+ blue = client.read();
|
|
|
+ green = client.read();
|
|
|
+ red = client.read();
|
|
|
+ client.read();
|
|
|
+ bytes_read += 4;
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ if (0 == pn % 8) mono_palette_buffer[pn / 8] = 0;
|
|
|
+ mono_palette_buffer[pn / 8] |= whitish << pn % 8;
|
|
|
+ if (0 == pn % 8) color_palette_buffer[pn / 8] = 0;
|
|
|
+ color_palette_buffer[pn / 8] |= colored << pn % 8;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ display.clearScreen();
|
|
|
+ uint32_t rowPosition = flip ? imageOffset + (height - h) * rowSize : imageOffset;
|
|
|
+ //Serial.print("skip "); Serial.println(rowPosition - bytes_read);
|
|
|
+ bytes_read += skip(client, rowPosition - bytes_read);
|
|
|
+ for (uint16_t row = 0; row < h; row++, rowPosition += rowSize) // for each line
|
|
|
+ {
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ delay(1); // yield() to avoid WDT
|
|
|
+ uint32_t in_remain = rowSize;
|
|
|
+ uint32_t in_idx = 0;
|
|
|
+ uint32_t in_bytes = 0;
|
|
|
+ uint8_t in_byte = 0; // for depth <= 8
|
|
|
+ uint8_t in_bits = 0; // for depth <= 8
|
|
|
+ uint8_t out_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ uint8_t out_color_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ uint32_t out_idx = 0;
|
|
|
+ for (uint16_t col = 0; col < w; col++) // for each pixel
|
|
|
+ {
|
|
|
+ yield();
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ // Time to read more pixel data?
|
|
|
+ if (in_idx >= in_bytes) // ok, exact match for 24bit also (size IS multiple of 3)
|
|
|
+ {
|
|
|
+ uint32_t get = in_remain > sizeof(input_buffer) ? sizeof(input_buffer) : in_remain;
|
|
|
+ uint32_t got = read(client, input_buffer, get);
|
|
|
+ while ((got < get) && connection_ok)
|
|
|
+ {
|
|
|
+ //Serial.print("got "); Serial.print(got); Serial.print(" < "); Serial.print(get); Serial.print(" @ "); Serial.println(bytes_read);
|
|
|
+ uint32_t gotmore = read(client, input_buffer + got, get - got);
|
|
|
+ got += gotmore;
|
|
|
+ connection_ok = gotmore > 0;
|
|
|
+ }
|
|
|
+ in_bytes = got;
|
|
|
+ in_remain -= got;
|
|
|
+ bytes_read += got;
|
|
|
+ }
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ Serial.print("Error: got no more after "); Serial.print(bytes_read); Serial.println(" bytes read!");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ switch (depth)
|
|
|
+ {
|
|
|
+ case 24:
|
|
|
+ blue = input_buffer[in_idx++];
|
|
|
+ green = input_buffer[in_idx++];
|
|
|
+ red = input_buffer[in_idx++];
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ break;
|
|
|
+ case 16:
|
|
|
+ {
|
|
|
+ uint8_t lsb = input_buffer[in_idx++];
|
|
|
+ uint8_t msb = input_buffer[in_idx++];
|
|
|
+ if (format == 0) // 555
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x03) << 6) | ((lsb & 0xE0) >> 2);
|
|
|
+ red = (msb & 0x7C) << 1;
|
|
|
+ }
|
|
|
+ else // 565
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x07) << 5) | ((lsb & 0xE0) >> 3);
|
|
|
+ red = (msb & 0xF8);
|
|
|
+ }
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case 1:
|
|
|
+ case 4:
|
|
|
+ case 8:
|
|
|
+ {
|
|
|
+ if (0 == in_bits)
|
|
|
+ {
|
|
|
+ in_byte = input_buffer[in_idx++];
|
|
|
+ in_bits = 8;
|
|
|
+ }
|
|
|
+ uint16_t pn = (in_byte >> bitshift) & bitmask;
|
|
|
+ whitish = mono_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ colored = color_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ in_byte <<= depth;
|
|
|
+ in_bits -= depth;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (whitish)
|
|
|
+ {
|
|
|
+ // keep white
|
|
|
+ }
|
|
|
+ else if (colored && with_color)
|
|
|
+ {
|
|
|
+ out_color_byte &= ~(0x80 >> col % 8); // colored
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ out_byte &= ~(0x80 >> col % 8); // black
|
|
|
+ }
|
|
|
+ if ((7 == col % 8) || (col == w - 1)) // write that last byte! (for w%8!=0 boarder)
|
|
|
+ {
|
|
|
+ output_row_color_buffer[out_idx] = out_color_byte;
|
|
|
+ output_row_mono_buffer[out_idx++] = out_byte;
|
|
|
+ out_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ out_color_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ }
|
|
|
+ } // end pixel
|
|
|
+ int16_t yrow = y + (flip ? h - row - 1 : row);
|
|
|
+ display.writeImage(output_row_mono_buffer, output_row_color_buffer, x, yrow, w, 1);
|
|
|
+ } // end line
|
|
|
+ Serial.print("downloaded in ");
|
|
|
+ Serial.print(millis() - startTime);
|
|
|
+ Serial.println(" ms");
|
|
|
+ display.refresh();
|
|
|
+ }
|
|
|
+ Serial.print("bytes read "); Serial.println(bytes_read);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!valid)
|
|
|
+ {
|
|
|
+ Serial.println("bitmap format not handled.");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void drawBitmapFrom_HTTP_ToBuffer(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color)
|
|
|
+{
|
|
|
+ TCPClient client;
|
|
|
+ bool connection_ok = false;
|
|
|
+ bool valid = false; // valid format to be handled
|
|
|
+ bool flip = true; // bitmap is stored bottom-to-top
|
|
|
+ uint32_t startTime = millis();
|
|
|
+ if ((x >= display.width()) || (y >= display.height())) return;
|
|
|
+ display.fillScreen(GxEPD_WHITE);
|
|
|
+ Serial.print("connecting to "); Serial.println(host);
|
|
|
+ if (!client.connect(host, httpPort))
|
|
|
+ {
|
|
|
+ Serial.println("connection failed");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ Serial.print("requesting URL: ");
|
|
|
+ Serial.println(String("http://") + host + path + filename);
|
|
|
+ client.print(String("GET ") + path + filename + " HTTP/1.1\r\n" +
|
|
|
+ "Host: " + host + "\r\n" +
|
|
|
+ "User-Agent: GxEPD2_WiFi_Example\r\n" +
|
|
|
+ "Connection: close\r\n\r\n");
|
|
|
+ Serial.println("request sent");
|
|
|
+ while (client.connected())
|
|
|
+ {
|
|
|
+ String line = client.readStringUntil('\n');
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ connection_ok = line.startsWith("HTTP/1.1 200 OK");
|
|
|
+ if (connection_ok) Serial.println(line);
|
|
|
+ //if (!connection_ok) Serial.println(line);
|
|
|
+ }
|
|
|
+ if (!connection_ok) Serial.println(line);
|
|
|
+ //Serial.println(line);
|
|
|
+ if (line == "\r")
|
|
|
+ {
|
|
|
+ Serial.println("headers received");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!connection_ok) return;
|
|
|
+ // Parse BMP header
|
|
|
+ if (read16(client) == 0x4D42) // BMP signature
|
|
|
+ {
|
|
|
+ uint32_t fileSize = read32(client);
|
|
|
+ uint32_t creatorBytes = read32(client);
|
|
|
+ uint32_t imageOffset = read32(client); // Start of image data
|
|
|
+ uint32_t headerSize = read32(client);
|
|
|
+ uint32_t width = read32(client);
|
|
|
+ uint32_t height = read32(client);
|
|
|
+ uint16_t planes = read16(client);
|
|
|
+ uint16_t depth = read16(client); // bits per pixel
|
|
|
+ uint32_t format = read32(client);
|
|
|
+ uint32_t bytes_read = 7 * 4 + 3 * 2; // read so far
|
|
|
+ if ((planes == 1) && ((format == 0) || (format == 3))) // uncompressed is handled, 565 also
|
|
|
+ {
|
|
|
+ Serial.print("File size: "); Serial.println(fileSize);
|
|
|
+ Serial.print("Image Offset: "); Serial.println(imageOffset);
|
|
|
+ Serial.print("Header size: "); Serial.println(headerSize);
|
|
|
+ Serial.print("Bit Depth: "); Serial.println(depth);
|
|
|
+ Serial.print("Image size: ");
|
|
|
+ Serial.print(width);
|
|
|
+ Serial.print('x');
|
|
|
+ Serial.println(height);
|
|
|
+ // BMP rows are padded (if needed) to 4-byte boundary
|
|
|
+ uint32_t rowSize = (width * depth / 8 + 3) & ~3;
|
|
|
+ if (depth < 8) rowSize = ((width * depth + 8 - depth) / 8 + 3) & ~3;
|
|
|
+ if (height < 0)
|
|
|
+ {
|
|
|
+ height = -height;
|
|
|
+ flip = false;
|
|
|
+ }
|
|
|
+ uint16_t w = width;
|
|
|
+ uint16_t h = height;
|
|
|
+ if ((x + w - 1) >= display.width()) w = display.width() - x;
|
|
|
+ if ((y + h - 1) >= display.height()) h = display.height() - y;
|
|
|
+ //if (w <= max_row_width) // handle with direct drawing
|
|
|
+ {
|
|
|
+ valid = true;
|
|
|
+ uint8_t bitmask = 0xFF;
|
|
|
+ uint8_t bitshift = 8 - depth;
|
|
|
+ uint16_t red, green, blue;
|
|
|
+ bool whitish, colored;
|
|
|
+ if (depth == 1) with_color = false;
|
|
|
+ if (depth <= 8)
|
|
|
+ {
|
|
|
+ if (depth < 8) bitmask >>= depth;
|
|
|
+ bytes_read += skip(client, 54 - bytes_read); //palette is always @ 54
|
|
|
+ for (uint16_t pn = 0; pn < (1 << depth); pn++)
|
|
|
+ {
|
|
|
+ blue = client.read();
|
|
|
+ green = client.read();
|
|
|
+ red = client.read();
|
|
|
+ client.read();
|
|
|
+ bytes_read += 4;
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ if (0 == pn % 8) mono_palette_buffer[pn / 8] = 0;
|
|
|
+ mono_palette_buffer[pn / 8] |= whitish << pn % 8;
|
|
|
+ if (0 == pn % 8) color_palette_buffer[pn / 8] = 0;
|
|
|
+ color_palette_buffer[pn / 8] |= colored << pn % 8;
|
|
|
+ //Serial.print("0x00"); Serial.print(red, HEX); Serial.print(green, HEX); Serial.print(blue, HEX);
|
|
|
+ //Serial.print(" : "); Serial.print(whitish); Serial.print(", "); Serial.println(colored);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ display.writeScreenBuffer();
|
|
|
+ uint32_t rowPosition = flip ? imageOffset + (height - h) * rowSize : imageOffset;
|
|
|
+ //Serial.print("skip "); Serial.println(rowPosition - bytes_read);
|
|
|
+ bytes_read += skip(client, rowPosition - bytes_read);
|
|
|
+ for (uint16_t row = 0; row < h; row++, rowPosition += rowSize) // for each line
|
|
|
+ {
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ delay(1); // yield() to avoid WDT
|
|
|
+ uint32_t in_remain = rowSize;
|
|
|
+ uint32_t in_idx = 0;
|
|
|
+ uint32_t in_bytes = 0;
|
|
|
+ uint8_t in_byte = 0; // for depth <= 8
|
|
|
+ uint8_t in_bits = 0; // for depth <= 8
|
|
|
+ uint16_t color = GxEPD_WHITE;
|
|
|
+ for (uint16_t col = 0; col < w; col++) // for each pixel
|
|
|
+ {
|
|
|
+ yield();
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ // Time to read more pixel data?
|
|
|
+ if (in_idx >= in_bytes) // ok, exact match for 24bit also (size IS multiple of 3)
|
|
|
+ {
|
|
|
+ uint32_t get = in_remain > sizeof(input_buffer) ? sizeof(input_buffer) : in_remain;
|
|
|
+ uint32_t got = read(client, input_buffer, get);
|
|
|
+ while ((got < get) && connection_ok)
|
|
|
+ {
|
|
|
+ //Serial.print("got "); Serial.print(got); Serial.print(" < "); Serial.print(get); Serial.print(" @ "); Serial.println(bytes_read);
|
|
|
+ uint32_t gotmore = read(client, input_buffer + got, get - got);
|
|
|
+ got += gotmore;
|
|
|
+ connection_ok = gotmore > 0;
|
|
|
+ }
|
|
|
+ in_bytes = got;
|
|
|
+ in_remain -= got;
|
|
|
+ bytes_read += got;
|
|
|
+ }
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ Serial.print("Error: got no more after "); Serial.print(bytes_read); Serial.println(" bytes read!");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ switch (depth)
|
|
|
+ {
|
|
|
+ case 24:
|
|
|
+ blue = input_buffer[in_idx++];
|
|
|
+ green = input_buffer[in_idx++];
|
|
|
+ red = input_buffer[in_idx++];
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ break;
|
|
|
+ case 16:
|
|
|
+ {
|
|
|
+ uint8_t lsb = input_buffer[in_idx++];
|
|
|
+ uint8_t msb = input_buffer[in_idx++];
|
|
|
+ if (format == 0) // 555
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x03) << 6) | ((lsb & 0xE0) >> 2);
|
|
|
+ red = (msb & 0x7C) << 1;
|
|
|
+ }
|
|
|
+ else // 565
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x07) << 5) | ((lsb & 0xE0) >> 3);
|
|
|
+ red = (msb & 0xF8);
|
|
|
+ }
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case 1:
|
|
|
+ case 4:
|
|
|
+ case 8:
|
|
|
+ {
|
|
|
+ if (0 == in_bits)
|
|
|
+ {
|
|
|
+ in_byte = input_buffer[in_idx++];
|
|
|
+ in_bits = 8;
|
|
|
+ }
|
|
|
+ uint16_t pn = (in_byte >> bitshift) & bitmask;
|
|
|
+ whitish = mono_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ colored = color_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ in_byte <<= depth;
|
|
|
+ in_bits -= depth;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (whitish)
|
|
|
+ {
|
|
|
+ color = GxEPD_WHITE;
|
|
|
+ }
|
|
|
+ else if (colored && with_color)
|
|
|
+ {
|
|
|
+ color = GxEPD_COLORED;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ color = GxEPD_BLACK;
|
|
|
+ }
|
|
|
+ uint16_t yrow = y + (flip ? h - row - 1 : row);
|
|
|
+ display.drawPixel(x + col, yrow, color);
|
|
|
+ } // end pixel
|
|
|
+ } // end line
|
|
|
+ }
|
|
|
+ Serial.print("bytes read "); Serial.println(bytes_read);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ Serial.print("loaded in "); Serial.print(millis() - startTime); Serial.println(" ms");
|
|
|
+ if (!valid)
|
|
|
+ {
|
|
|
+ Serial.println("bitmap format not handled.");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void showBitmapFrom_HTTP_Buffered(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color)
|
|
|
+{
|
|
|
+ Serial.println(); Serial.print("downloading file \""); Serial.print(filename); Serial.println("\"");
|
|
|
+ display.setFullWindow();
|
|
|
+ display.firstPage();
|
|
|
+ do
|
|
|
+ {
|
|
|
+ drawBitmapFrom_HTTP_ToBuffer(host, path, filename, x, y, with_color);
|
|
|
+ }
|
|
|
+ while (display.nextPage());
|
|
|
+}
|
|
|
+
|
|
|
+void showBitmapFrom_HTTPS(const char* host, const char* path, const char* filename, const char* fingerprint, int16_t x, int16_t y, bool with_color)
|
|
|
+{
|
|
|
+ // Use TCPClient class to create TLS connection
|
|
|
+#if USE_BearSSL
|
|
|
+ BearSSL::TCPClient client;
|
|
|
+#else
|
|
|
+ TCPClient client;
|
|
|
+#endif
|
|
|
+ bool connection_ok = false;
|
|
|
+ bool valid = false; // valid format to be handled
|
|
|
+ bool flip = true; // bitmap is stored bottom-to-top
|
|
|
+ uint32_t startTime = millis();
|
|
|
+ if ((x >= display.width()) || (y >= display.height())) return;
|
|
|
+ Serial.println(); Serial.print("downloading file \""); Serial.print(filename); Serial.println("\"");
|
|
|
+ Serial.print("connecting to "); Serial.println(host);
|
|
|
+#if USE_BearSSL
|
|
|
+ if (fingerprint) client.setFingerprint((uint8_t*)fingerprint);
|
|
|
+#endif
|
|
|
+ if (!client.connect(host, httpsPort))
|
|
|
+ {
|
|
|
+ Serial.println("connection failed");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+#if defined (ESP8266) && !USE_BearSSL
|
|
|
+ if (fingerprint)
|
|
|
+ {
|
|
|
+ if (client.verify(fingerprint, host))
|
|
|
+ {
|
|
|
+ Serial.println("certificate matches");
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ Serial.println("certificate doesn't match");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ Serial.print("requesting URL: ");
|
|
|
+ Serial.println(String("https://") + host + path + filename);
|
|
|
+ client.print(String("GET ") + path + filename + " HTTP/1.1\r\n" +
|
|
|
+ "Host: " + host + "\r\n" +
|
|
|
+ "User-Agent: GxEPD2_WiFi_Example\r\n" +
|
|
|
+ "Connection: close\r\n\r\n");
|
|
|
+ Serial.println("request sent");
|
|
|
+ while (client.connected())
|
|
|
+ {
|
|
|
+ String line = client.readStringUntil('\n');
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ connection_ok = line.startsWith("HTTP/1.1 200 OK");
|
|
|
+ if (connection_ok) Serial.println(line);
|
|
|
+ //if (!connection_ok) Serial.println(line);
|
|
|
+ }
|
|
|
+ if (!connection_ok) Serial.println(line);
|
|
|
+ //Serial.println(line);
|
|
|
+ if (line == "\r")
|
|
|
+ {
|
|
|
+ Serial.println("headers received");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!connection_ok) return;
|
|
|
+ // Parse BMP header
|
|
|
+ if (read16(client) == 0x4D42) // BMP signature
|
|
|
+ {
|
|
|
+ uint32_t fileSize = read32(client);
|
|
|
+ uint32_t creatorBytes = read32(client);
|
|
|
+ uint32_t imageOffset = read32(client); // Start of image data
|
|
|
+ uint32_t headerSize = read32(client);
|
|
|
+ uint32_t width = read32(client);
|
|
|
+ uint32_t height = read32(client);
|
|
|
+ uint16_t planes = read16(client);
|
|
|
+ uint16_t depth = read16(client); // bits per pixel
|
|
|
+ uint32_t format = read32(client);
|
|
|
+ uint32_t bytes_read = 7 * 4 + 3 * 2; // read so far
|
|
|
+ if ((planes == 1) && ((format == 0) || (format == 3))) // uncompressed is handled, 565 also
|
|
|
+ {
|
|
|
+ Serial.print("File size: "); Serial.println(fileSize);
|
|
|
+ Serial.print("Image Offset: "); Serial.println(imageOffset);
|
|
|
+ Serial.print("Header size: "); Serial.println(headerSize);
|
|
|
+ Serial.print("Bit Depth: "); Serial.println(depth);
|
|
|
+ Serial.print("Image size: ");
|
|
|
+ Serial.print(width);
|
|
|
+ Serial.print('x');
|
|
|
+ Serial.println(height);
|
|
|
+ // BMP rows are padded (if needed) to 4-byte boundary
|
|
|
+ uint32_t rowSize = (width * depth / 8 + 3) & ~3;
|
|
|
+ if (depth < 8) rowSize = ((width * depth + 8 - depth) / 8 + 3) & ~3;
|
|
|
+ if (height < 0)
|
|
|
+ {
|
|
|
+ height = -height;
|
|
|
+ flip = false;
|
|
|
+ }
|
|
|
+ uint16_t w = width;
|
|
|
+ uint16_t h = height;
|
|
|
+ if ((x + w - 1) >= display.width()) w = display.width() - x;
|
|
|
+ if ((y + h - 1) >= display.height()) h = display.height() - y;
|
|
|
+ if (w <= max_row_width) // handle with direct drawing
|
|
|
+ {
|
|
|
+ valid = true;
|
|
|
+ uint8_t bitmask = 0xFF;
|
|
|
+ uint8_t bitshift = 8 - depth;
|
|
|
+ uint16_t red, green, blue;
|
|
|
+ bool whitish, colored;
|
|
|
+ if (depth == 1) with_color = false;
|
|
|
+ if (depth <= 8)
|
|
|
+ {
|
|
|
+ if (depth < 8) bitmask >>= depth;
|
|
|
+ bytes_read += skip(client, 54 - bytes_read); //palette is always @ 54
|
|
|
+ for (uint16_t pn = 0; pn < (1 << depth); pn++)
|
|
|
+ {
|
|
|
+ blue = client.read();
|
|
|
+ green = client.read();
|
|
|
+ red = client.read();
|
|
|
+ client.read();
|
|
|
+ bytes_read += 4;
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ if (0 == pn % 8) mono_palette_buffer[pn / 8] = 0;
|
|
|
+ mono_palette_buffer[pn / 8] |= whitish << pn % 8;
|
|
|
+ if (0 == pn % 8) color_palette_buffer[pn / 8] = 0;
|
|
|
+ color_palette_buffer[pn / 8] |= colored << pn % 8;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ display.clearScreen();
|
|
|
+ uint32_t rowPosition = flip ? imageOffset + (height - h) * rowSize : imageOffset;
|
|
|
+ //Serial.print("skip "); Serial.println(rowPosition - bytes_read);
|
|
|
+ bytes_read += skip(client, rowPosition - bytes_read);
|
|
|
+ for (uint16_t row = 0; row < h; row++, rowPosition += rowSize) // for each line
|
|
|
+ {
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ delay(1); // yield() to avoid WDT
|
|
|
+ uint32_t in_remain = rowSize;
|
|
|
+ uint32_t in_idx = 0;
|
|
|
+ uint32_t in_bytes = 0;
|
|
|
+ uint8_t in_byte = 0; // for depth <= 8
|
|
|
+ uint8_t in_bits = 0; // for depth <= 8
|
|
|
+ uint8_t out_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ uint8_t out_color_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ uint32_t out_idx = 0;
|
|
|
+ for (uint16_t col = 0; col < w; col++) // for each pixel
|
|
|
+ {
|
|
|
+ yield();
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ // Time to read more pixel data?
|
|
|
+ if (in_idx >= in_bytes) // ok, exact match for 24bit also (size IS multiple of 3)
|
|
|
+ {
|
|
|
+ uint32_t get = in_remain > sizeof(input_buffer) ? sizeof(input_buffer) : in_remain;
|
|
|
+ uint32_t got = read(client, input_buffer, get);
|
|
|
+ while ((got < get) && connection_ok)
|
|
|
+ {
|
|
|
+ //Serial.print("got "); Serial.print(got); Serial.print(" < "); Serial.print(get); Serial.print(" @ "); Serial.println(bytes_read);
|
|
|
+ //if ((get - got) > client.available()) delay(200); // does improve? yes, if >= 200
|
|
|
+ uint32_t gotmore = read(client, input_buffer + got, get - got);
|
|
|
+ got += gotmore;
|
|
|
+ connection_ok = gotmore > 0;
|
|
|
+ }
|
|
|
+ in_bytes = got;
|
|
|
+ in_remain -= got;
|
|
|
+ bytes_read += got;
|
|
|
+ }
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ Serial.print("Error: got no more after "); Serial.print(bytes_read); Serial.println(" bytes read!");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ switch (depth)
|
|
|
+ {
|
|
|
+ case 24:
|
|
|
+ blue = input_buffer[in_idx++];
|
|
|
+ green = input_buffer[in_idx++];
|
|
|
+ red = input_buffer[in_idx++];
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ break;
|
|
|
+ case 16:
|
|
|
+ {
|
|
|
+ uint8_t lsb = input_buffer[in_idx++];
|
|
|
+ uint8_t msb = input_buffer[in_idx++];
|
|
|
+ if (format == 0) // 555
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x03) << 6) | ((lsb & 0xE0) >> 2);
|
|
|
+ red = (msb & 0x7C) << 1;
|
|
|
+ }
|
|
|
+ else // 565
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x07) << 5) | ((lsb & 0xE0) >> 3);
|
|
|
+ red = (msb & 0xF8);
|
|
|
+ }
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case 1:
|
|
|
+ case 4:
|
|
|
+ case 8:
|
|
|
+ {
|
|
|
+ if (0 == in_bits)
|
|
|
+ {
|
|
|
+ in_byte = input_buffer[in_idx++];
|
|
|
+ in_bits = 8;
|
|
|
+ }
|
|
|
+ uint16_t pn = (in_byte >> bitshift) & bitmask;
|
|
|
+ whitish = mono_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ colored = color_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ in_byte <<= depth;
|
|
|
+ in_bits -= depth;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (whitish)
|
|
|
+ {
|
|
|
+ // keep white
|
|
|
+ }
|
|
|
+ else if (colored && with_color)
|
|
|
+ {
|
|
|
+ out_color_byte &= ~(0x80 >> col % 8); // colored
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ out_byte &= ~(0x80 >> col % 8); // black
|
|
|
+ }
|
|
|
+ if ((7 == col % 8) || (col == w - 1)) // write that last byte! (for w%8!=0 boarder)
|
|
|
+ {
|
|
|
+ output_row_color_buffer[out_idx] = out_color_byte;
|
|
|
+ output_row_mono_buffer[out_idx++] = out_byte;
|
|
|
+ out_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ out_color_byte = 0xFF; // white (for w%8!=0 boarder)
|
|
|
+ }
|
|
|
+ } // end pixel
|
|
|
+ int16_t yrow = y + (flip ? h - row - 1 : row);
|
|
|
+ display.writeImage(output_row_mono_buffer, output_row_color_buffer, x, yrow, w, 1);
|
|
|
+ } // end line
|
|
|
+ Serial.print("downloaded in "); Serial.print(millis() - startTime); Serial.println(" ms");
|
|
|
+ Serial.print("bytes read "); Serial.println(bytes_read);
|
|
|
+ display.refresh();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!valid)
|
|
|
+ {
|
|
|
+ Serial.println("bitmap format not handled.");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void drawBitmapFrom_HTTPS_ToBuffer(const char* host, const char* path, const char* filename, const char* fingerprint, int16_t x, int16_t y, bool with_color)
|
|
|
+{
|
|
|
+ // Use TCPClient class to create TLS connection
|
|
|
+#if USE_BearSSL
|
|
|
+ BearSSL::TCPClient client;
|
|
|
+#else
|
|
|
+ TCPClient client;
|
|
|
+#endif
|
|
|
+ bool connection_ok = false;
|
|
|
+ bool valid = false; // valid format to be handled
|
|
|
+ bool flip = true; // bitmap is stored bottom-to-top
|
|
|
+ uint32_t startTime = millis();
|
|
|
+ if ((x >= display.width()) || (y >= display.height())) return;
|
|
|
+ display.fillScreen(GxEPD_WHITE);
|
|
|
+ Serial.print("connecting to "); Serial.println(host);
|
|
|
+#if USE_BearSSL
|
|
|
+ if (fingerprint) client.setFingerprint((uint8_t*)fingerprint);
|
|
|
+#endif
|
|
|
+ if (!client.connect(host, httpsPort))
|
|
|
+ {
|
|
|
+ Serial.println("connection failed");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+#if defined (ESP8266) && !USE_BearSSL
|
|
|
+ if (fingerprint)
|
|
|
+ {
|
|
|
+ if (client.verify(fingerprint, host))
|
|
|
+ {
|
|
|
+ Serial.println("certificate matches");
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ Serial.println("certificate doesn't match");
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ Serial.print("requesting URL: ");
|
|
|
+ Serial.println(String("https://") + host + path + filename);
|
|
|
+ client.print(String("GET ") + path + filename + " HTTP/1.1\r\n" +
|
|
|
+ "Host: " + host + "\r\n" +
|
|
|
+ "User-Agent: GxEPD2_WiFi_Example\r\n" +
|
|
|
+ "Connection: close\r\n\r\n");
|
|
|
+ Serial.println("request sent");
|
|
|
+ while (client.connected())
|
|
|
+ {
|
|
|
+ String line = client.readStringUntil('\n');
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ connection_ok = line.startsWith("HTTP/1.1 200 OK");
|
|
|
+ if (connection_ok) Serial.println(line);
|
|
|
+ //if (!connection_ok) Serial.println(line);
|
|
|
+ }
|
|
|
+ if (!connection_ok) Serial.println(line);
|
|
|
+ //Serial.println(line);
|
|
|
+ if (line == "\r")
|
|
|
+ {
|
|
|
+ Serial.println("headers received");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!connection_ok) return;
|
|
|
+ // Parse BMP header
|
|
|
+ if (read16(client) == 0x4D42) // BMP signature
|
|
|
+ {
|
|
|
+ uint32_t fileSize = read32(client);
|
|
|
+ uint32_t creatorBytes = read32(client);
|
|
|
+ uint32_t imageOffset = read32(client); // Start of image data
|
|
|
+ uint32_t headerSize = read32(client);
|
|
|
+ uint32_t width = read32(client);
|
|
|
+ uint32_t height = read32(client);
|
|
|
+ uint16_t planes = read16(client);
|
|
|
+ uint16_t depth = read16(client); // bits per pixel
|
|
|
+ uint32_t format = read32(client);
|
|
|
+ uint32_t bytes_read = 7 * 4 + 3 * 2; // read so far
|
|
|
+ if ((planes == 1) && ((format == 0) || (format == 3))) // uncompressed is handled, 565 also
|
|
|
+ {
|
|
|
+ Serial.print("File size: "); Serial.println(fileSize);
|
|
|
+ Serial.print("Image Offset: "); Serial.println(imageOffset);
|
|
|
+ Serial.print("Header size: "); Serial.println(headerSize);
|
|
|
+ Serial.print("Bit Depth: "); Serial.println(depth);
|
|
|
+ Serial.print("Image size: ");
|
|
|
+ Serial.print(width);
|
|
|
+ Serial.print('x');
|
|
|
+ Serial.println(height);
|
|
|
+ // BMP rows are padded (if needed) to 4-byte boundary
|
|
|
+ uint32_t rowSize = (width * depth / 8 + 3) & ~3;
|
|
|
+ if (depth < 8) rowSize = ((width * depth + 8 - depth) / 8 + 3) & ~3;
|
|
|
+ if (height < 0)
|
|
|
+ {
|
|
|
+ height = -height;
|
|
|
+ flip = false;
|
|
|
+ }
|
|
|
+ uint16_t w = width;
|
|
|
+ uint16_t h = height;
|
|
|
+ if ((x + w - 1) >= display.width()) w = display.width() - x;
|
|
|
+ if ((y + h - 1) >= display.height()) h = display.height() - y;
|
|
|
+ //if (w <= max_row_width) // handle with direct drawing
|
|
|
+ {
|
|
|
+ valid = true;
|
|
|
+ uint8_t bitmask = 0xFF;
|
|
|
+ uint8_t bitshift = 8 - depth;
|
|
|
+ uint16_t red, green, blue;
|
|
|
+ bool whitish, colored;
|
|
|
+ if (depth == 1) with_color = false;
|
|
|
+ if (depth <= 8)
|
|
|
+ {
|
|
|
+ if (depth < 8) bitmask >>= depth;
|
|
|
+ bytes_read += skip(client, 54 - bytes_read); //palette is always @ 54
|
|
|
+ for (uint16_t pn = 0; pn < (1 << depth); pn++)
|
|
|
+ {
|
|
|
+ blue = client.read();
|
|
|
+ green = client.read();
|
|
|
+ red = client.read();
|
|
|
+ client.read();
|
|
|
+ bytes_read += 4;
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ if (0 == pn % 8) mono_palette_buffer[pn / 8] = 0;
|
|
|
+ mono_palette_buffer[pn / 8] |= whitish << pn % 8;
|
|
|
+ if (0 == pn % 8) color_palette_buffer[pn / 8] = 0;
|
|
|
+ color_palette_buffer[pn / 8] |= colored << pn % 8;
|
|
|
+ //Serial.print("0x00"); Serial.print(red, HEX); Serial.print(green, HEX); Serial.print(blue, HEX);
|
|
|
+ //Serial.print(" : "); Serial.print(whitish); Serial.print(", "); Serial.println(colored);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ display.writeScreenBuffer();
|
|
|
+ uint32_t rowPosition = flip ? imageOffset + (height - h) * rowSize : imageOffset;
|
|
|
+ //Serial.print("skip "); Serial.println(rowPosition - bytes_read);
|
|
|
+ bytes_read += skip(client, rowPosition - bytes_read);
|
|
|
+ for (uint16_t row = 0; row < h; row++, rowPosition += rowSize) // for each line
|
|
|
+ {
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ delay(1); // yield() to avoid WDT
|
|
|
+ uint32_t in_remain = rowSize;
|
|
|
+ uint32_t in_idx = 0;
|
|
|
+ uint32_t in_bytes = 0;
|
|
|
+ uint8_t in_byte = 0; // for depth <= 8
|
|
|
+ uint8_t in_bits = 0; // for depth <= 8
|
|
|
+ uint16_t color = GxEPD_WHITE;
|
|
|
+ for (uint16_t col = 0; col < w; col++) // for each pixel
|
|
|
+ {
|
|
|
+ yield();
|
|
|
+ if (!connection_ok || !(client.connected() || client.available())) break;
|
|
|
+ // Time to read more pixel data?
|
|
|
+ if (in_idx >= in_bytes) // ok, exact match for 24bit also (size IS multiple of 3)
|
|
|
+ {
|
|
|
+ uint32_t get = in_remain > sizeof(input_buffer) ? sizeof(input_buffer) : in_remain;
|
|
|
+ uint32_t got = read(client, input_buffer, get);
|
|
|
+ while ((got < get) && connection_ok)
|
|
|
+ {
|
|
|
+ //Serial.print("got "); Serial.print(got); Serial.print(" < "); Serial.print(get); Serial.print(" @ "); Serial.println(bytes_read);
|
|
|
+ uint32_t gotmore = read(client, input_buffer + got, get - got);
|
|
|
+ got += gotmore;
|
|
|
+ connection_ok = gotmore > 0;
|
|
|
+ }
|
|
|
+ in_bytes = got;
|
|
|
+ in_remain -= got;
|
|
|
+ bytes_read += got;
|
|
|
+ }
|
|
|
+ if (!connection_ok)
|
|
|
+ {
|
|
|
+ Serial.print("Error: got no more after "); Serial.print(bytes_read); Serial.println(" bytes read!");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ switch (depth)
|
|
|
+ {
|
|
|
+ case 24:
|
|
|
+ blue = input_buffer[in_idx++];
|
|
|
+ green = input_buffer[in_idx++];
|
|
|
+ red = input_buffer[in_idx++];
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ break;
|
|
|
+ case 16:
|
|
|
+ {
|
|
|
+ uint8_t lsb = input_buffer[in_idx++];
|
|
|
+ uint8_t msb = input_buffer[in_idx++];
|
|
|
+ if (format == 0) // 555
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x03) << 6) | ((lsb & 0xE0) >> 2);
|
|
|
+ red = (msb & 0x7C) << 1;
|
|
|
+ }
|
|
|
+ else // 565
|
|
|
+ {
|
|
|
+ blue = (lsb & 0x1F) << 3;
|
|
|
+ green = ((msb & 0x07) << 5) | ((lsb & 0xE0) >> 3);
|
|
|
+ red = (msb & 0xF8);
|
|
|
+ }
|
|
|
+ whitish = with_color ? ((red > 0x80) && (green > 0x80) && (blue > 0x80)) : ((red + green + blue) > 3 * 0x80); // whitish
|
|
|
+ colored = (red > 0xF0) || ((green > 0xF0) && (blue > 0xF0)); // reddish or yellowish?
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case 1:
|
|
|
+ case 4:
|
|
|
+ case 8:
|
|
|
+ {
|
|
|
+ if (0 == in_bits)
|
|
|
+ {
|
|
|
+ in_byte = input_buffer[in_idx++];
|
|
|
+ in_bits = 8;
|
|
|
+ }
|
|
|
+ uint16_t pn = (in_byte >> bitshift) & bitmask;
|
|
|
+ whitish = mono_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ colored = color_palette_buffer[pn / 8] & (0x1 << pn % 8);
|
|
|
+ in_byte <<= depth;
|
|
|
+ in_bits -= depth;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (whitish)
|
|
|
+ {
|
|
|
+ color = GxEPD_WHITE;
|
|
|
+ }
|
|
|
+ else if (colored && with_color)
|
|
|
+ {
|
|
|
+ color = GxEPD_COLORED;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ color = GxEPD_BLACK;
|
|
|
+ }
|
|
|
+ uint16_t yrow = y + (flip ? h - row - 1 : row);
|
|
|
+ display.drawPixel(x + col, yrow, color);
|
|
|
+ } // end pixel
|
|
|
+ } // end line
|
|
|
+ }
|
|
|
+ Serial.print("bytes read "); Serial.println(bytes_read);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ Serial.print("loaded in "); Serial.print(millis() - startTime); Serial.println(" ms");
|
|
|
+ if (!valid)
|
|
|
+ {
|
|
|
+ Serial.println("bitmap format not handled.");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void showBitmapFrom_HTTPS_Buffered(const char* host, const char* path, const char* filename, const char* fingerprint, int16_t x, int16_t y, bool with_color)
|
|
|
+{
|
|
|
+ Serial.println(); Serial.print("downloading file \""); Serial.print(filename); Serial.println("\"");
|
|
|
+ display.setFullWindow();
|
|
|
+ display.firstPage();
|
|
|
+ do
|
|
|
+ {
|
|
|
+ drawBitmapFrom_HTTPS_ToBuffer(host, path, filename, fingerprint, x, y, with_color);
|
|
|
+ }
|
|
|
+ while (display.nextPage());
|
|
|
+}
|
|
|
+
|
|
|
+uint16_t read16(TCPClient& client)
|
|
|
+{
|
|
|
+ // BMP data is stored little-endian, same as Arduino.
|
|
|
+ uint16_t result;
|
|
|
+ ((uint8_t *)&result)[0] = client.read(); // LSB
|
|
|
+ ((uint8_t *)&result)[1] = client.read(); // MSB
|
|
|
+ return result;
|
|
|
+}
|
|
|
+
|
|
|
+uint32_t read32(TCPClient& client)
|
|
|
+{
|
|
|
+ // BMP data is stored little-endian, same as Arduino.
|
|
|
+ uint32_t result;
|
|
|
+ ((uint8_t *)&result)[0] = client.read(); // LSB
|
|
|
+ ((uint8_t *)&result)[1] = client.read();
|
|
|
+ ((uint8_t *)&result)[2] = client.read();
|
|
|
+ ((uint8_t *)&result)[3] = client.read(); // MSB
|
|
|
+ return result;
|
|
|
+}
|
|
|
+
|
|
|
+#if USE_BearSSL
|
|
|
+
|
|
|
+uint32_t skip(BearSSL::TCPClient& client, int32_t bytes)
|
|
|
+{
|
|
|
+ int32_t remain = bytes;
|
|
|
+ uint32_t start = millis();
|
|
|
+ while ((client.connected() || client.available()) && (remain > 0))
|
|
|
+ {
|
|
|
+ if (client.available())
|
|
|
+ {
|
|
|
+ int16_t v = client.read();
|
|
|
+ remain--;
|
|
|
+ }
|
|
|
+ else delay(1);
|
|
|
+ if (millis() - start > 2000) break; // don't hang forever
|
|
|
+ }
|
|
|
+ return bytes - remain;
|
|
|
+}
|
|
|
+
|
|
|
+uint32_t read(BearSSL::TCPClient& client, uint8_t* buffer, int32_t bytes)
|
|
|
+{
|
|
|
+ int32_t remain = bytes;
|
|
|
+ uint32_t start = millis();
|
|
|
+ while ((client.connected() || client.available()) && (remain > 0))
|
|
|
+ {
|
|
|
+ if (client.available())
|
|
|
+ {
|
|
|
+ int16_t v = client.read();
|
|
|
+ *buffer++ = uint8_t(v);
|
|
|
+ remain--;
|
|
|
+ }
|
|
|
+ else delay(1);
|
|
|
+ if (millis() - start > 2000) break; // don't hang forever
|
|
|
+ }
|
|
|
+ return bytes - remain;
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|
|
|
+
|
|
|
+uint32_t skip(TCPClient& client, int32_t bytes)
|
|
|
+{
|
|
|
+ int32_t remain = bytes;
|
|
|
+ uint32_t start = millis();
|
|
|
+ while ((client.connected() || client.available()) && (remain > 0))
|
|
|
+ {
|
|
|
+ if (client.available())
|
|
|
+ {
|
|
|
+ int16_t v = client.read();
|
|
|
+ remain--;
|
|
|
+ }
|
|
|
+ else delay(1);
|
|
|
+ if (millis() - start > 2000) break; // don't hang forever
|
|
|
+ }
|
|
|
+ return bytes - remain;
|
|
|
+}
|
|
|
+
|
|
|
+uint32_t read(TCPClient& client, uint8_t* buffer, int32_t bytes)
|
|
|
+{
|
|
|
+ int32_t remain = bytes;
|
|
|
+ uint32_t start = millis();
|
|
|
+ while ((client.connected() || client.available()) && (remain > 0))
|
|
|
+ {
|
|
|
+ if (client.available())
|
|
|
+ {
|
|
|
+ int16_t v = client.read();
|
|
|
+ *buffer++ = uint8_t(v);
|
|
|
+ remain--;
|
|
|
+ }
|
|
|
+ else delay(1);
|
|
|
+ if (millis() - start > 2000) break; // don't hang forever
|
|
|
+ }
|
|
|
+ return bytes - remain;
|
|
|
+}
|
ZinggJM