// GxEPD2_WiFi_Example : Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare. // Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines! // // Display Library based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html // // BMP handling code extracts taken from: https://github.com/prenticedavid/MCUFRIEND_kbv/tree/master/examples/showBMP_kbv_Uno // // Author: Jean-Marc Zingg // // Version: see library.properties // // Library: https://github.com/ZinggJM/GxEPD2 // // note that BMP bitmaps are drawn at physical position in physical orientation of the screen // Supporting Arduino Forum Topics: // Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0 // Good Display ePaper for Arduino: https://forum.arduino.cc/index.php?topic=436411.0 // see GxEPD2_wiring_examples.h for wiring suggestions and examples // base class GxEPD2_GFX can be used to pass references or pointers to the display instance as parameter, uses ~1.2k more code // enable or disable GxEPD2_GFX base class #define ENABLE_GxEPD2_GFX 0 // uncomment next line to use class GFX of library GFX_Root instead of Adafruit_GFX //#include // Note: if you use this with ENABLE_GxEPD2_GFX 1: // uncomment it in GxEPD2_GFX.h too, or add #include before any #include #include #include #include // select the display class (only one), matching the kind of display panel #define GxEPD2_DISPLAY_CLASS GxEPD2_BW //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C /// select the display driver class (only one) for your panel //#define GxEPD2_DRIVER_CLASS GxEPD2_154 // GDEP015OC1 200x200, no longer available //#define GxEPD2_DRIVER_CLASS GxEPD2_154_D67 // GDEH0154D67 200x200 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_T8 // GDEW0154T8 152x152 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152 //#define GxEPD2_DRIVER_CLASS GxEPD2_213 // GDE0213B1 128x250, phased out //#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 128x250 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 128x250 //#define GxEPD2_DRIVER_CLASS GxEPD2_290 // GDEH029A1 128x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5 // GDEW029T5 128x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94 // GDEM029T94 128x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_290_M06 // GDEW029M06 128x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_260 // GDEW026T0 152x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01 152x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_270 // GDEW027W3 176x264 //#define GxEPD2_DRIVER_CLASS GxEPD2_371 // GDEW0371W7 240x416 //#define GxEPD2_DRIVER_CLASS GxEPD2_420 // GDEW042T2 400x300 //#define GxEPD2_DRIVER_CLASS GxEPD2_420_M01 // GDEW042M01 400x300 //#define GxEPD2_DRIVER_CLASS GxEPD2_583 // GDEW0583T7 600x448 //#define GxEPD2_DRIVER_CLASS GxEPD2_583_T8 // GDEW0583T8 648x480 //#define GxEPD2_DRIVER_CLASS GxEPD2_750 // GDEW075T8 640x384 //#define GxEPD2_DRIVER_CLASS GxEPD2_750_T7 // GDEW075T7 800x480 // 3-color e-papers //#define GxEPD2_DRIVER_CLASS GxEPD2_154c // GDEW0154Z04 200x200, no longer available //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c // GDEW0213Z16 104x212 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c // GDEW029Z10 128x296 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c // GDEW027C44 176x264 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c // GDEW042Z15 400x300 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c // GDEW0583Z21 600x448 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c // GDEW075Z09 600x384 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08 800x480 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90 880x528 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248 // GDEW1248T3 1303x984 // 7-color e-paper //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color (3C graphics) // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT //#define GxEPD2_DRIVER_CLASS GxEPD2_it60 // ED060SCT 800x600 //#define GxEPD2_DRIVER_CLASS GxEPD2_it60_1448x1072 // ED060KC1 1448x1072 // SS is usually used for CS. define here for easy change #ifndef EPD_CS #define EPD_CS SS #endif #if defined (ESP8266) #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-34000ul) // ~34000 base use, WiFiClientSecure seems to need about 34k more to work #if GxEPD2_DISPLAY_CLASS == GxEPD2_BW #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8)) #elif GxEPD2_DISPLAY_CLASS == GxEPD2_3C #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8)) #elif GxEPD2_DISPLAY_CLASS == GxEPD2_7C #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) #endif // adapt the constructor parameters to your wiring GxEPD2_DISPLAY_CLASS display(GxEPD2_DRIVER_CLASS(/*CS=D8*/ EPD_CS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // mapping of Waveshare e-Paper ESP8266 Driver Board, new version //GxEPD2_DISPLAY_CLASS display(GxEPD2_DRIVER_CLASS(/*CS=15*/ EPD_CS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // mapping of Waveshare e-Paper ESP8266 Driver Board, old version //GxEPD2_DISPLAY_CLASS display(GxEPD2_DRIVER_CLASS(/*CS=15*/ EPD_CS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); #endif #if defined(ESP32) #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g. #if GxEPD2_DISPLAY_CLASS == GxEPD2_BW #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8)) #elif GxEPD2_DISPLAY_CLASS == GxEPD2_3C #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8)) #elif GxEPD2_DISPLAY_CLASS == GxEPD2_7C #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) #endif // adapt the constructor parameters to your wiring #if (GxEPD2_DRIVER_CLASS != GxEPD2_1248) #if defined(ARDUINO_LOLIN_D32_PRO) GxEPD2_DISPLAY_CLASS display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); #elif defined(ARDUINO_ESP32_DEV) // e.g. TTGO T8 ESP32-WROVER GxEPD2_DISPLAY_CLASS display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); #else GxEPD2_DISPLAY_CLASS display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); #endif #else // GxEPD2_1248 // Waveshare 12.48 b/w SPI display board and frame or Good Display 12.48 b/w panel GDEW1248T3 // general constructor for use with all parameters, e.g. for Waveshare ESP32 driver board mounted on connection board GxEPD2_BW < GxEPD2_1248, GxEPD2_1248::HEIGHT / 4 > display(GxEPD2_1248(/*sck=*/ 13, /*miso=*/ 12, /*mosi=*/ 14, /*cs_m1=*/ 23, /*cs_s1=*/ 22, /*cs_m2=*/ 16, /*cs_s2=*/ 19, /*dc1=*/ 25, /*dc2=*/ 17, /*rst1=*/ 33, /*rst2=*/ 5, /*busy_m1=*/ 32, /*busy_s1=*/ 26, /*busy_m2=*/ 18, /*busy_s2=*/ 4)); #endif #endif #if defined (ESP8266) #include #define USE_BearSSL true #endif #include #include const char* ssid = "........"; const char* password = "........"; const int httpPort = 80; const int httpsPort = 443; const char* fp_api_github_com = "df b2 29 c6 a6 38 1a 59 9d c9 ad 92 2d 26 f5 3c 83 8f a5 87"; // as of 25.11.2020 const char* fp_github_com = "5f 3f 7a c2 56 9f 50 a4 66 76 47 c6 a1 8c a0 07 aa ed bb 8e"; // as of 25.11.2020 const char* fp_rawcontent = "70 94 de dd e6 c4 69 48 3a 92 70 a1 48 56 78 2d 18 64 e0 b7"; // as of 25.11.2020 // how to find the certificate was not easy. finally I found it using Mozilla Firefox. // opened one of the bitmaps, e.g. https://raw.githubusercontent.com/ZinggJM/GxEPD2/master/extras/bitmaps/logo200x200.bmp // clicked the lock symbol, Connection secure clicked >, show connection details, clicked More Information, clicked View Certificate, clicked Download PEM (chain), // selected Open with Notepad. Copied the middle certificate and editted to the following format: // the number of characters per line is of no importance, but the 3 \n are needed const char* certificate_rawcontent = "-----BEGIN CERTIFICATE-----\n" "MIIEsTCCA5mgAwIBAgIQBOHnpNxc8vNtwCtCuF0VnzANBgkqhkiG9w0BAQsFADBsMQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGln" "aUNlcnQgSW5jMRkwFwYDVQQLExB3d3cuZGlnaWNlcnQuY29tMSswKQYDVQQDEyJEaWdpQ2VydCBIaWdoIEFzc3VyYW5jZSBFViBS" "b290IENBMB4XDTEzMTAyMjEyMDAwMFoXDTI4MTAyMjEyMDAwMFowcDELMAkGA1UEBhMCVVMxFTATBgNVBAoTDERpZ2lDZXJ0IElu" "YzEZMBcGA1UECxMQd3d3LmRpZ2ljZXJ0LmNvbTEvMC0GA1UEAxMmRGlnaUNlcnQgU0hBMiBIaWdoIEFzc3VyYW5jZSBTZXJ2ZXIg" "Q0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC24C/CJAbIbQRf1+8KZAayfSImZRauQkCbztyfn3YHPsMwVYcZuU+U" "DlqUH1VWtMICKq/QmO4LQNfE0DtyyBSe75CxEamu0si4QzrZCwvV1ZX1QK/IHe1NnF9Xt4ZQaJn1itrSxwUfqJfJ3KSxgoQtxq2l" "nMcZgqaFD15EWCo3j/018QsIJzJa9buLnqS9UdAn4t07QjOjBSjEuyjMmqwrIw14xnvmXnG3Sj4I+4G3FhahnSMSTeXXkgisdaSc" "us0Xsh5ENWV/UyU50RwKmmMbGZJ0aAo3wsJSSMs5WqK24V3B3aAguCGikyZvFEohQcftbZvySC/zA/WiaJJTL17jAgMBAAGjggFJ" "MIIBRTASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwNAYI" "KwYBBQUHAQEEKDAmMCQGCCsGAQUFBzABhhhodHRwOi8vb2NzcC5kaWdpY2VydC5jb20wSwYDVR0fBEQwQjBAoD6gPIY6aHR0cDov" "L2NybDQuZGlnaWNlcnQuY29tL0RpZ2lDZXJ0SGlnaEFzc3VyYW5jZUVWUm9vdENBLmNybDA9BgNVHSAENjA0MDIGBFUdIAAwKjAo" "BggrBgEFBQcCARYcaHR0cHM6Ly93d3cuZGlnaWNlcnQuY29tL0NQUzAdBgNVHQ4EFgQUUWj/kK8CB3U8zNllZGKiErhZcjswHwYD" "VR0jBBgwFoAUsT7DaQP4v0cB1JgmGggC72NkK8MwDQYJKoZIhvcNAQELBQADggEBABiKlYkD5m3fXPwdaOpKj4PWUS+Na0QWnqxj" "9dJubISZi6qBcYRb7TROsLd5kinMLYBq8I4g4Xmk/gNHE+r1hspZcX30BJZr01lYPf7TMSVcGDiEo+afgv2MW5gxTs14nhr9hctJ" "qvIni5ly/D6q1UEL2tU2ob8cbkdJf17ZSHwD2f2LSaCYJkJA69aSEaRkCldUxPUd1gJea6zuxICaEnL6VpPX/78whQYwvwt/Tv9X" "BZ0k7YXDK/umdaisLRbvfXknsuvCnQsH6qqF0wGjIChBWUMo0oHjqvbsezt3tkBigAVBRQHvFwY+3sAzm2fTYS5yh+Rp/BIAV0AecPUeybQ=\n" "-----END CERTIFICATE-----\n"; const char* host_rawcontent = "raw.githubusercontent.com"; const char* path_rawcontent = "/ZinggJM/GxEPD2/master/extras/bitmaps/"; const char* path_prenticedavid = "/prenticedavid/MCUFRIEND_kbv/master/extras/bitmaps/"; const char* path_waveshare_c = "/waveshare/e-Paper/master/RaspberryPi_JetsonNano/c/pic/"; const char* path_waveshare_py = "/waveshare/e-Paper/master/RaspberryPi_JetsonNano/python/pic/"; // note that BMP bitmaps are drawn at physical position in physical orientation of the screen void showBitmapFrom_HTTP(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color = true); 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, const char* certificate = certificate_rawcontent); // draws BMP bitmap according to set orientation void showBitmapFrom_HTTP_Buffered(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color = true); 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, const char* certificate = certificate_rawcontent); void setup() { Serial.begin(115200); Serial.println(); Serial.println("GxEPD2_WiFi_Example"); display.init(115200); #ifdef REMAP_SPI_FOR_WAVESHARE_ESP32_DRIVER_BOARD SPI.end(); // release standard SPI pins, e.g. SCK(18), MISO(19), MOSI(23), SS(5) //SPI: void begin(int8_t sck=-1, int8_t miso=-1, int8_t mosi=-1, int8_t ss=-1); SPI.begin(13, 12, 14, 15); // map and init SPI pins SCK(13), MISO(12), MOSI(14), SS(15) #endif #ifdef RE_INIT_NEEDED WiFi.persistent(true); WiFi.mode(WIFI_STA); // switch off AP WiFi.setAutoConnect(true); WiFi.setAutoReconnect(true); WiFi.disconnect(); #endif if (!WiFi.getAutoConnect() || ( WiFi.getMode() != WIFI_STA) || ((WiFi.SSID() != ssid) && String(ssid) != "........")) { Serial.println(); Serial.print("WiFi.getAutoConnect()="); Serial.println(WiFi.getAutoConnect()); Serial.print("WiFi.SSID()="); Serial.println(WiFi.SSID()); WiFi.mode(WIFI_STA); // switch off AP Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); } int ConnectTimeout = 30; // 15 seconds while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); Serial.print(WiFi.status()); if (--ConnectTimeout <= 0) { Serial.println(); Serial.println("WiFi connect timeout"); return; } } Serial.println(); Serial.println("WiFi connected"); // Print the IP address Serial.println(WiFi.localIP()); if ((display.epd2.panel == GxEPD2::GDEW0154Z04) || (display.epd2.panel == GxEPD2::ACeP565) || false) { drawBitmapsBuffered_200x200(); drawBitmapsBuffered_other(); drawBitmapsBuffered_7C(); } else { drawBitmaps_200x200(); drawBitmaps_other(); } //drawBitmaps_test(); //drawBitmapsBuffered_test(); Serial.println("GxEPD2_WiFi_Example done"); } void loop(void) { } void drawBitmaps_200x200() { int16_t x = (display.width() - 200) / 2; int16_t y = (display.height() - 200) / 2; showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "logo200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "first200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "second200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "third200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "fourth200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "fifth200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "sixth200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "seventh200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "eighth200x200.bmp", fp_rawcontent, x, y); delay(2000); } void drawBitmaps_other() { int16_t w2 = display.width() / 2; int16_t h2 = display.height() / 2; showBitmapFrom_HTTP("www.packescape.com", "/img/assets/", "IniciMenusTV2.bmp", w2 - 200, h2 - 150, false); delay(2000); showBitmapFrom_HTTP("www.squix.org", "/blog/wunderground/", "chanceflurries.bmp", w2 - 50, h2 - 50, false); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "betty_1.bmp", fp_rawcontent, w2 - 100, h2 - 160); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "marilyn_240x240x8.bmp", fp_rawcontent, w2 - 120, h2 - 120); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "miniwoof.bmp", fp_rawcontent, w2 - 60, h2 - 80); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "test.bmp", fp_rawcontent, w2 - 120, h2 - 160); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger.bmp", fp_rawcontent, w2 - 160, h2 - 120); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger_178x160x4.bmp", fp_rawcontent, w2 - 89, h2 - 80); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger_240x317x4.bmp", fp_rawcontent, w2 - 120, h2 - 160); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger_320x200x24.bmp", fp_rawcontent, w2 - 160, h2 - 100); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "tiger16T.bmp", fp_rawcontent, w2 - 160, h2 - 100); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "woof.bmp", fp_rawcontent, w2 - 100, h2 - 100); delay(2000); } void drawBitmaps_test() { int16_t w2 = display.width() / 2; int16_t h2 = display.height() / 2; showBitmapFrom_HTTPS(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "output5.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "output6.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "tractor_1.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "tractor_4.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "tractor_8.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "tractor_11.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "tractor_44.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "tractor_88.bmp", fp_rawcontent, 0, 0); delay(2000); //showBitmapFrom_HTTPS(host_rawcontent, path_rawcontent, "liberato640x384.bmp", fp_rawcontent, 0, 0); //delay(2000); } void drawBitmapsBuffered_200x200() { int16_t x = (display.width() - 200) / 2; int16_t y = (display.height() - 200) / 2; showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "logo200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "first200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "second200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "third200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "fourth200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "fifth200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "sixth200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "seventh200x200.bmp", fp_rawcontent, x, y); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_rawcontent, "eighth200x200.bmp", fp_rawcontent, x, y); delay(2000); } void drawBitmapsBuffered_other() { int16_t w2 = display.width() / 2; int16_t h2 = display.height() / 2; showBitmapFrom_HTTP_Buffered("www.squix.org", "/blog/wunderground/", "chanceflurries.bmp", w2 - 50, h2 - 50, false); delay(2000); //showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "betty_1.bmp", fp_rawcontent, w2 - 100, h2 - 160); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "marilyn_240x240x8.bmp", fp_rawcontent, w2 - 120, h2 - 120); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "miniwoof.bmp", fp_rawcontent, w2 - 60, h2 - 80); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "test.bmp", fp_rawcontent, w2 - 120, h2 - 160); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger.bmp", fp_rawcontent, w2 - 160, h2 - 120); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger_178x160x4.bmp", fp_rawcontent, w2 - 89, h2 - 80); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger_240x317x4.bmp", fp_rawcontent, w2 - 120, h2 - 160); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger_320x200x24.bmp", fp_rawcontent, w2 - 160, h2 - 100); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "tiger16T.bmp", fp_rawcontent, w2 - 160, h2 - 100); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "woof.bmp", fp_rawcontent, w2 - 100, h2 - 100); delay(2000); } void drawBitmapsBuffered_7C() { if (display.epd2.panel == GxEPD2::ACeP565) { showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_waveshare_c, "5in65f.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_waveshare_c, "5in65f2.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_waveshare_c, "5in65f3.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_waveshare_c, "5in65f4.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_waveshare_py, "5in65f4.bmp", fp_rawcontent, 0, 0); delay(2000); showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_waveshare_py, "N-Color1.bmp", fp_rawcontent, 0, 0); delay(2000); } } void drawBitmapsBuffered_test() { int16_t w2 = display.width() / 2; int16_t h2 = display.height() / 2; showBitmapFrom_HTTPS_Buffered(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, w2 - 102, h2 - 126); delay(2000); } static const uint16_t input_buffer_pixels = 800; // may affect performance static const uint16_t max_row_width = 1448; // for up to 6" display 1448x1072 static const uint16_t max_palette_pixels = 256; // for depth <= 8 uint8_t input_buffer[3 * input_buffer_pixels]; // up to depth 24 uint8_t output_row_mono_buffer[max_row_width / 8]; // buffer for at least one row of b/w bits uint8_t output_row_color_buffer[max_row_width / 8]; // buffer for at least one row of color bits 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 uint16_t rgb_palette_buffer[max_palette_pixels]; // palette buffer for depth <= 8 for buffered graphics, needed for 7-color display void showBitmapFrom_HTTP(const char* host, const char* path, const char* filename, int16_t x, int16_t y, bool with_color) { WiFiClient 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.epd2.WIDTH) || (y >= display.epd2.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.epd2.WIDTH) w = display.epd2.WIDTH - x; if ((y + h - 1) >= display.epd2.HEIGHT) h = display.epd2.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 bytes_read += skip(client, imageOffset - (4 << depth) - bytes_read); // 54 for regular, diff for colorsimportant 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 border) uint8_t out_color_byte = 0xFF; // white (for w%8!=0 border) 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 = read8n(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 = read8n(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 border) { 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 border) out_color_byte = 0xFF; // white (for w%8!=0 border) } } // 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); } } client.stop(); 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) { WiFiClient client; bool connection_ok = false; bool valid = false; // valid format to be handled bool flip = true; // bitmap is stored bottom-to-top bool has_multicolors = display.epd2.panel == GxEPD2::ACeP565; 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 bytes_read += skip(client, imageOffset - (4 << depth) - bytes_read); // 54 for regular, diff for colorsimportant 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); rgb_palette_buffer[pn] = ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | ((blue & 0xF8) >> 3); } } 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 = read8n(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 = read8n(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? color = ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | ((blue & 0xF8) >> 3); 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; color = ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | ((blue & 0xF8) >> 3); } else // 565 { blue = (lsb & 0x1F) << 3; green = ((msb & 0x07) << 5) | ((lsb & 0xE0) >> 3); red = (msb & 0xF8); color = (msb << 8) | lsb; } 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; color = rgb_palette_buffer[pn]; } break; } if (with_color && has_multicolors) { // keep color } else 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"); client.stop(); 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, const char* certificate) { // Use WiFiClientSecure class to create TLS connection #if USE_BearSSL BearSSL::WiFiClientSecure client; #else WiFiClientSecure 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.epd2.WIDTH) || (y >= display.epd2.HEIGHT)) return; Serial.println(); Serial.print("downloading file \""); Serial.print(filename); Serial.println("\""); Serial.print("connecting to "); Serial.println(host); #if defined (ESP8266) client.setBufferSizes(4096, 4096); // doesn't help if (fingerprint) client.setFingerprint(fingerprint); #elif defined (ESP32) if (certificate) client.setCACert(certificate); #endif if (!client.connect(host, httpsPort)) { Serial.println("connection failed"); return; } 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.epd2.WIDTH) w = display.epd2.WIDTH - x; if ((y + h - 1) >= display.epd2.HEIGHT) h = display.epd2.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 bytes_read += skip(client, imageOffset - (4 << depth) - bytes_read); // 54 for regular, diff for colorsimportant 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 border) uint8_t out_color_byte = 0xFF; // white (for w%8!=0 border) 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 = read8n(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 = read8n(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 border) { 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 border) out_color_byte = 0xFF; // white (for w%8!=0 border) } } // 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(); } } } client.stop(); 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, const char* certificate) { // Use WiFiClientSecure class to create TLS connection #if USE_BearSSL BearSSL::WiFiClientSecure client; #else WiFiClientSecure client; #endif bool connection_ok = false; bool valid = false; // valid format to be handled bool flip = true; // bitmap is stored bottom-to-top bool has_multicolors = display.epd2.panel == GxEPD2::ACeP565; uint32_t startTime = millis(); if ((x >= display.width()) || (y >= display.height())) return; display.fillScreen(GxEPD_WHITE); Serial.print("connecting to "); Serial.println(host); #if defined (ESP8266) client.setBufferSizes(4096, 4096); // doesn't help if (fingerprint) client.setFingerprint(fingerprint); #elif defined (ESP32) if (certificate) client.setCACert(certificate); #endif if (!client.connect(host, httpsPort)) { Serial.println("connection failed"); return; } 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 bytes_read += skip(client, imageOffset - (4 << depth) - bytes_read); // 54 for regular, diff for colorsimportant 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); rgb_palette_buffer[pn] = ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | ((blue & 0xF8) >> 3); } } 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 = read8n(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 = read8n(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? color = ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | ((blue & 0xF8) >> 3); 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; color = ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | ((blue & 0xF8) >> 3); } else // 565 { blue = (lsb & 0x1F) << 3; green = ((msb & 0x07) << 5) | ((lsb & 0xE0) >> 3); red = (msb & 0xF8); color = (msb << 8) | lsb; } 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; color = rgb_palette_buffer[pn]; } break; } if (with_color && has_multicolors) { // keep color } else 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"); client.stop(); 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, const char* certificate) { 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, certificate); } while (display.nextPage()); } uint16_t read16(WiFiClient& 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(WiFiClient& 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::WiFiClientSecure& 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 read8n(BearSSL::WiFiClientSecure& 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(WiFiClient& 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 read8n(WiFiClient& 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; }