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Arduino/libraries/GxEPD2/examples/GxEPD2_SerialFlash_Loader/GxEPD2_SerialFlash_Loader.ino
Jérôme Delacotte 7b30d6e298 first commit
2025-03-06 11:15:32 +01:00

460 lines
16 KiB
C++
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// GxEPD2_SerialFlash_Loader : Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
//
// Display Library based on Demo Example from Good Display: https://www.good-display.com/companyfile/32/
//
// Author: Jean-Marc Zingg
//
// Version: see library.properties
//
// Library: https://github.com/ZinggJM/GxEPD2
//
// this example uses the SerialFlash library from: https://github.com/PaulStoffregen/SerialFlash
// with a modification for use with ESP32 or the STM32 package available here: https://github.com/ZinggJM/SerialFlash
// download it as .zip file and install with Library Mananger method "Add .ZIP Library..."
//
// this example can run on ESP6266 or ESP32 using WiFi connection
// Supporting Arduino Forum Topics (closed, read only):
// Good Display ePaper for Arduino: https://forum.arduino.cc/t/good-display-epaper-for-arduino/419657
// Waveshare e-paper displays with SPI: https://forum.arduino.cc/t/waveshare-e-paper-displays-with-spi/467865
//
// Add new topics in https://forum.arduino.cc/c/using-arduino/displays/23 for new questions and issues
#include <SerialFlash.h>
// digital pin for flash chip CS pin:
//const int FlashChipSelect = SS; // for standard slave select pin
//const int FlashChipSelect = 5; // use D1 on my Wemos D1 mini wired for e-papers
const int FlashChipSelect = 2; // as used with my ESP32 protoboard SD connector
#if defined (ESP8266)
#include <ESP8266WiFi.h>
#endif
#include <WiFiClient.h>
#include <WiFiClientSecure.h>
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
// note: the certificates have been moved to a separate header file, as R"CERT( destroys IDE Auto Format capability
#include "GxEPD2_github_raw_certs.h"
const char* certificate_rawcontent = cert_DigiCert_TLS_RSA_SHA256_2020_CA1; // ok, should work until 2031-04-13 23:59:59
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 setup()
{
Serial.begin(115200);
Serial.println();
Serial.println("GxEPD2_SerialFlash_Loader");
#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());
setClock();
if (!SerialFlash.begin(FlashChipSelect))
{
Serial.println("Unable to access SPI Flash chip");
return;
}
Serial.println("SerialFlash started");
eraseSerialFlash();
listFiles();
downloadBitmaps_200x200();
downloadBitmaps_other();
downloadBitmaps_test();
listFiles();
}
void loop()
{
}
void listFiles()
{
Serial.println("All Files on SPI Flash chip:");
SerialFlash.opendir();
while (1)
{
char filename[64];
uint32_t filesize;
if (SerialFlash.readdir(filename, sizeof(filename), filesize))
{
Serial.print(" ");
Serial.print(filename);
spaces(20 - strlen(filename));
Serial.print(" ");
Serial.print(filesize);
Serial.print(" bytes");
Serial.println();
}
else
{
Serial.println("no more files...");
break; // no more files
}
}
}
void spaces(int num)
{
for (int i=0; i < num; i++)
{
Serial.print(" ");
}
}
void downloadFile_HTTPS(const char* host, const char* path, const char* filename, const char* fingerprint, const char* target, const char* certificate = certificate_rawcontent);
void downloadBitmaps_200x200()
{
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "logo200x200.bmp", fp_rawcontent, "logo200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "first200x200.bmp", fp_rawcontent, "first200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "second200x200.bmp", fp_rawcontent, "second200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "third200x200.bmp", fp_rawcontent, "third200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "fourth200x200.bmp", fp_rawcontent, "fourth200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "fifth200x200.bmp", fp_rawcontent, "fifth200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "sixth200x200.bmp", fp_rawcontent, "sixth200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "seventh200x200.bmp", fp_rawcontent, "seventh200x200.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "eighth200x200.bmp", fp_rawcontent, "eighth200x200.bmp");
}
void downloadBitmaps_other()
{
downloadFile_HTTP("www.squix.org", "/blog/wunderground/", "chanceflurries.bmp", "chanceflurries.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "betty_1.bmp", fp_rawcontent, "betty_1.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "betty_4.bmp", fp_rawcontent, "betty_4.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "marilyn_240x240x8.bmp", fp_rawcontent, "marilyn_240x240x8.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "miniwoof.bmp", fp_rawcontent, "miniwoof.bmp");
//downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "test.bmp", fp_rawcontent, "test.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "tiger.bmp", fp_rawcontent, "tiger.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "tiger_178x160x4.bmp", fp_rawcontent, "tiger_178x160x4.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "tiger_240x317x4.bmp", fp_rawcontent, "tiger_240x317x4.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "tiger_320x200x24.bmp", fp_rawcontent, "tiger_320x200x24.bmp");
//downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "tiger16T.bmp", fp_rawcontent, "tiger16T.bmp");
downloadFile_HTTPS(host_rawcontent, path_prenticedavid, "woof.bmp", fp_rawcontent, "woof.bmp");
}
void downloadBitmaps_test()
{
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "output5.bmp", fp_rawcontent, "output5.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "output6.bmp", fp_rawcontent, "output6.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "tractor_1.bmp", fp_rawcontent, "tractor_1.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "tractor_4.bmp", fp_rawcontent, "tractor_4.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "tractor_8.bmp", fp_rawcontent, "tractor_8.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "tractor_11.bmp", fp_rawcontent, "tractor_11.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "tractor_44.bmp", fp_rawcontent, "tractor_44.bmp");
downloadFile_HTTPS(host_rawcontent, path_rawcontent, "tractor_88.bmp", fp_rawcontent, "tractor_88.bmp");
}
void downloadFile_HTTP(const char* host, const char* path, const char* filename, const char* target)
{
WiFiClient client;
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_SerialFlash_Loader\r\n" +
"Connection: close\r\n\r\n");
Serial.println("request sent");
bool ok = false;
int32_t content_length = 0;
while (client.connected() || client.available())
{
String line = client.readStringUntil('\n');
if (!ok)
{
ok = line.startsWith("HTTP/1.1 200 OK");
if (ok) Serial.println(line);
//if (!ok) Serial.println(line);
}
if (!ok) Serial.println(line);
//Serial.println(line);
if (line.startsWith("Content-Length: "))
{
content_length = line.substring(16, line.length()).toInt();
Serial.print("content_length is "); Serial.println(content_length);
}
if (line == "\r")
{
Serial.println("headers received");
break;
}
}
if (!ok) return;
uint8_t buffer[512];
#if defined(ESP8266)
client.peekBytes(buffer, 2);
Serial.write(buffer[0]); Serial.write(buffer[1]); Serial.println();
#endif
size_t total = 0;
//if (!SerialFlash.createErasable(target, content_length)) // would use much more space
if (!SerialFlash.create(target, content_length))
{
Serial.print(target); Serial.println(" create failed");
return;
}
SerialFlashFile file = SerialFlash.open(target);
if (!file)
{
Serial.print(target); Serial.println(" open failed");
return;
}
while (client.connected() || client.available())
{
size_t available = client.available();
size_t fetch = available <= sizeof(buffer) ? available : sizeof(buffer);
if (fetch > 0)
{
size_t got = client.read(buffer, fetch);
file.write(buffer, got);
total += got;
}
delay(1); // yield();
}
file.close();
Serial.print("done, "); Serial.print(total); Serial.println(" bytes transferred");
}
void downloadFile_HTTPS(const char* host, const char* path, const char* filename, const char* fingerprint, const char* target, const char* certificate)
{
// Use WiFiClientSecure class to create TLS connection
#if defined (ESP8266)
BearSSL::WiFiClientSecure client;
BearSSL::X509List cert(certificate ? certificate : certificate_rawcontent);
#else
WiFiClientSecure client;
#endif
Serial.println(); Serial.print("downloading file \""); Serial.print(filename); Serial.println("\"");
Serial.print("connecting to "); Serial.println(host);
#if defined (ESP8266)
if (certificate) client.setTrustAnchors(&cert);
else if (fingerprint) client.setFingerprint(fingerprint);
else client.setInsecure();
#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_SerialFlash_Loader\r\n" +
"Connection: close\r\n\r\n");
Serial.println("request sent");
bool ok = false;
int32_t content_length = 0;
while (client.connected() || client.available())
{
String line = client.readStringUntil('\n');
if (!ok)
{
ok = line.startsWith("HTTP/1.1 200 OK");
if (ok) Serial.println(line);
//if (!ok) Serial.println(line);
}
if (!ok) Serial.println(line);
//Serial.print("line: "); Serial.println(line);
if (line.startsWith("Content-Length: "))
{
content_length = line.substring(16, line.length()).toInt();
Serial.print("content_length is "); Serial.println(content_length);
}
if (line == "\r")
{
Serial.println("headers received");
break;
}
}
if (!ok) return;
//return;
uint8_t buffer[512];
#if defined(ESP8266)
client.peekBytes(buffer, 2);
Serial.write(buffer[0]); Serial.write(buffer[1]); Serial.println();
#endif
size_t total = 0;
//if (!SerialFlash.createErasable(target, content_length)) // would use much more space
if (!SerialFlash.create(target, content_length))
{
Serial.print(target); Serial.println(" create failed");
return;
}
SerialFlashFile file = SerialFlash.open(target);
if (!file)
{
Serial.print(target); Serial.println(" open failed");
return;
}
while (client.connected() || client.available())
{
// this doesn't work as expected, but it helps for long downloads
int32_t start = millis();
for (int16_t t = 0, dly = 50; t < 20; t++, dly += 50)
{
if (!(client.connected() || client.available())) break;
if (client.available()) break; // read would not recover after having returned 0
delay(dly);
}
if (!(client.connected() || client.available())) break;
int32_t elapsed = millis() - start;
if (elapsed > 250)
{
Serial.print("waited for available "); Serial.print(millis() - start); Serial.print(" ms @ "); Serial.println(total);
}
size_t available = client.available();
if (0 == available)
{
Serial.print("download error: timeout on available() after "); Serial.print(total); Serial.println(" bytes");
break; // don't hang forever
}
size_t fetch = available <= sizeof(buffer) ? available : sizeof(buffer);
if (fetch > 0)
{
size_t got = client.read(buffer, fetch);
file.write(buffer, got);
total += got;
}
delay(1); // yield();
if (total > 30000) delay(250); // helps for long downloads
}
file.close();
Serial.print("done, "); Serial.print(total); Serial.println(" bytes transferred");
}
void eraseSerialFlash()
{
unsigned char id[5];
SerialFlash.readID(id);
unsigned long size = SerialFlash.capacity(id);
unsigned long startMillis = millis();
if (size > 0)
{
Serial.print("Flash Memory has ");
Serial.print(size);
Serial.println(" bytes.");
Serial.println("Erasing ALL Flash Memory:");
// Estimate the (lengthy) wait time.
Serial.print(" estimated wait: ");
int seconds = (float)size / eraseBytesPerSecond(id) + 0.5;
Serial.print(seconds);
Serial.println(" seconds.");
Serial.println(" Yes, full chip erase is SLOW!");
SerialFlash.eraseAll();
unsigned long dotMillis = millis();
unsigned char dotcount = 0;
while (SerialFlash.ready() == false)
{
if (millis() - dotMillis > 1000)
{
dotMillis = dotMillis + 1000;
Serial.print(".");
dotcount = dotcount + 1;
if (dotcount >= 60)
{
Serial.println();
dotcount = 0;
}
}
yield();
}
if (dotcount > 0) Serial.println();
Serial.println("Erase completed");
unsigned long elapsed = millis() - startMillis;
Serial.print(" actual wait: ");
Serial.print(elapsed / 1000ul);
Serial.println(" seconds.");
}
}
float eraseBytesPerSecond(const unsigned char *id)
{
if (id[0] == 0x20) return 152000.0; // Micron
if (id[0] == 0x01) return 500000.0; // Spansion
if (id[0] == 0xEF) return 419430.0; // Winbond
if (id[0] == 0xC2) return 279620.0; // Macronix
return 320000.0; // guess?
}
// Set time via NTP, as required for x.509 validation
void setClock()
{
configTime(3 * 3600, 0, "pool.ntp.org", "time.nist.gov");
Serial.print("Waiting for NTP time sync: ");
time_t now = time(nullptr);
while (now < 8 * 3600 * 2)
{
delay(500);
Serial.print(".");
now = time(nullptr);
}
Serial.println("");
struct tm timeinfo;
gmtime_r(&now, &timeinfo);
Serial.print("Current time: ");
Serial.print(asctime(&timeinfo));
}
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