Version 3.1.1

- added support for GDEM029T94 2.9" b/w, actual Waveshare 2.9" b/w
- updated example GxEPD_WiFi_Example, for actual GitHub certificate

README.md

@@ -46,6 +46,7 @@ A simple E-Paper display library with common base class and separate IO class fo
 - GDEW0213Z16    2.13" b/w/r
 - GDEH029A1      2.9" b/w
 - GDEW029T5      2.9" b/w
+- GDEM029T94     2.9" b/w
 - GDEW029Z10     2.9" b/w/r
 - GDEW026T0      2.6" b/w
 - GDEW027C44     2.7" b/w/r
@@ -66,7 +67,10 @@ A simple E-Paper display library with common base class and separate IO class fo
 
 ### for pin mapping suggestions see ConnectingHardware.md
 
-### Version 3.1.0
+### Version 3.1.1
+- added support for GDEM029T94 2.9" b/w, actual Waveshare 2.9" b/w
+- updated example GxEPD_WiFi_Example, for actual GitHub certificate
+#### Version 3.1.0
 - added support for GDEH0154D67 1.54" b/w, replacement for GDEP015OC1
 - added example GxEPD_MinimumExample, e.g. for memory footprint
 #### Version 3.0.9

examples/GxEPD_Example/GxEPD_Example.ino

@@ -53,6 +53,7 @@
 //#include <GxGDEW0213Z16/GxGDEW0213Z16.h>  // 2.13" b/w/r
 //#include <GxGDEH029A1/GxGDEH029A1.h>      // 2.9" b/w
 //#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>      // 2.9" b/w
 //#include <GxGDEW029Z10/GxGDEW029Z10.h>    // 2.9" b/w/r
 //#include <GxGDEW026T0/GxGDEW026T0.h>      // 2.6" b/w
 //#include <GxGDEW027C44/GxGDEW027C44.h>    // 2.7" b/w/r
@@ -366,6 +367,20 @@ void showBitmapExample()
 }
 #endif
 
+#if defined(_GxGDEM029T94_H_)
+void showBitmapExample()
+{
+  display.drawExampleBitmap(BitmapExample1, sizeof(BitmapExample1));
+  delay(2000);
+  display.drawExampleBitmap(BitmapExample2, sizeof(BitmapExample2));
+  delay(5000);
+  display.fillScreen(GxEPD_WHITE);
+  display.drawExampleBitmap(BitmapExample1, 0, 0, GxEPD_WIDTH, GxEPD_HEIGHT, GxEPD_BLACK);
+  display.update();
+  delay(5000);
+}
+#endif
+
 #if defined(_GxGDEW029Z10_H_)
 #define HAS_RED_COLOR
 void showBitmapExample()

examples/GxEPD_SD_Example/GxEPD_SD_Example.ino

@@ -85,6 +85,7 @@ SdFat SD;
 //#include <GxGDEW0213Z16/GxGDEW0213Z16.h>  // 2.13" b/w/r
 //#include <GxGDEH029A1/GxGDEH029A1.h>      // 2.9" b/w
 //#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>      // 2.9" b/w
 //#include <GxGDEW029Z10/GxGDEW029Z10.h>    // 2.9" b/w/r
 //#include <GxGDEW026T0/GxGDEW026T0.h>      // 2.6" b/w
 //#include <GxGDEW027C44/GxGDEW027C44.h>    // 2.7" b/w/r

examples/GxEPD_WiFi_Example/GxEPD_WiFi_Example.ino

@@ -57,6 +57,7 @@
 //#include <GxGDEW0213Z16/GxGDEW0213Z16.h>  // 2.13" b/w/r
 //#include <GxGDEH029A1/GxGDEH029A1.h>      // 2.9" b/w
 //#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>      // 2.9" b/w
 //#include <GxGDEW029Z10/GxGDEW029Z10.h>    // 2.9" b/w/r
 //#include <GxGDEW026T0/GxGDEW026T0.h>      // 2.6" b/w
 //#include <GxGDEW027C44/GxGDEW027C44.h>    // 2.7" b/w/r
@@ -105,16 +106,41 @@ const char* ssid     = "........";
 const char* password = "........";
 const int httpPort  = 80;
 const int httpsPort = 443;
-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";
-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";
-#if USE_BearSSL
-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};
-#else
-const char* fp_rawcontent     = "cc aa 48 48 66 46 0e 91 53 2c 9c 7c 23 2a b1 74 4d 29 9d 33";
-#endif
+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/";
 
 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);
@@ -241,11 +267,14 @@ void drawBitmaps_test()
   delay(2000);
 }
 
-static const uint16_t input_buffer_pixels = 640; // may affect performance
+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
 
@@ -485,28 +514,17 @@ void drawBitmapFrom_HTTPS_ToBuffer(const char* host, const char* path, const cha
   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);
+#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;
   }
-#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" +

examples/GxFont_GFX_Example/GxFont_GFX_Example.ino

@@ -75,6 +75,8 @@
 //#include <GxGDEH0213B72/GxGDEH0213B72.h>  // 2.13" b/w new panel
 //#include <GxGDEW0213Z16/GxGDEW0213Z16.h>  // 2.13" b/w/r
 //#include <GxGDEH029A1/GxGDEH029A1.h>      // 2.9" b/w
+//#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>    // 2.9" b/w
 //#include <GxGDEW029Z10/GxGDEW029Z10.h>    // 2.9" b/w/r
 //#include <GxGDEW027C44/GxGDEW027C44.h>    // 2.7" b/w/r
 //#include <GxGDEW027W3/GxGDEW027W3.h>      // 2.7" b/w

examples/PagedDisplayForSmallRam/PagedDisplayForSmallRam.ino

@@ -47,6 +47,7 @@
 //#include <GxGDEW0213Z16/GxGDEW0213Z16.h>  // 2.13" b/w/r
 //#include <GxGDEH029A1/GxGDEH029A1.h>      // 2.9" b/w
 //#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>      // 2.9" b/w
 //#include <GxGDEW029Z10/GxGDEW029Z10.h>    // 2.9" b/w/r
 //#include <GxGDEW026T0/GxGDEW026T0.h>      // 2.6" b/w // NOTE: does not compile for UNO: segmentation fault, reason unknown
 //#include <GxGDEW027C44/GxGDEW027C44.h>    // 2.7" b/w/r

examples/PartialUpdateExample/PartialUpdateExample.ino

@@ -46,6 +46,7 @@
 //#include <GxGDEH0213B73/GxGDEH0213B73.h>  // 2.13" b/w newer panel
 //#include <GxGDEH029A1/GxGDEH029A1.h>      // 2.9" b/w
 //#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>    // 2.9" b/w
 //#include <GxGDEW026T0/GxGDEW026T0.h>      // 2.6" b/w
 //#include <GxGDEW027W3/GxGDEW027W3.h>      // 2.7" b/w
 //#include <GxGDEW0371W7/GxGDEW0371W7.h>    // 3.7" b/w

examples/PartialUpdateTest/PartialUpdateTest.ino

@@ -25,9 +25,11 @@
 
 // select the display class to use, only one
 //#include <GxGDEP015OC1/GxGDEP015OC1.h>
-#include <GxGDEH0154D67/GxGDEH0154D67.h>
+//#include <GxGDEH0154D67/GxGDEH0154D67.h>
 //#include <GxGDE0213B1/GxGDE0213B1.h>
 //#include <GxGDEH029A1/GxGDEH029A1.h>
+//#include <GxGDEW029T5/GxGDEW029T5.h>      // 2.9" b/w IL0373
+//#include <GxGDEM029T94/GxGDEM029T94.h>    // 2.9" b/w
 //#include <GxGDEW042T2/GxGDEW042T2.h>
 
 #include <GxIO/GxIO_SPI/GxIO_SPI.h>
@@ -103,7 +105,7 @@ GxEPD_Class display(io /*RST=9*/ /*BUSY=7*/); // default selection of (9), 7
 #if defined(_GxGDEP015OC1_H_) || defined(_GxGDEH0154D67_H_)
 const uint32_t partial_update_period_s = 1;
 const uint32_t full_update_period_s = 6 * 60 * 60;
-#elif defined(_GxGDE0213B1_H_) || defined(_GxGDEH029A1_H_) || defined(_GxGDEW042T2_H_)
+#elif defined(_GxGDE0213B1_H_) || defined(_GxGDEH029A1_H_) || defined(_GxGDEM029T94_H_) || defined(_GxGDEW042T2_H_)
 const uint32_t partial_update_period_s = 2;
 const uint32_t full_update_period_s = 1 * 60 * 60;
 #endif

library.properties

@@ -1,5 +1,5 @@
 name=GxEPD
-version=3.1.0
+version=3.1.1
 author=Jean-Marc Zingg
 maintainer=Jean-Marc Zingg
 sentence=Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.