/*
* SPIFFSにあるBMPファイルを表示する
*/
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266FtpServer.h>
#include <FS.h>
#include <SPI.h>
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
IPAddress myIP(192, 168, 10, 99);
const char* ssid = "アクセスポイントのSSID";
const char* password = "アクセスポイントのパスワード";
//set #define FTP_DEBUG in ESP8266FtpServer.h to see ftp
verbose on serial
FtpServer ftpSrv;
#define TFT_DC 15
#define TFT_CS 2
#define TFT_RST -1
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC,
TFT_RST);
long lastTime = 0;
void listDir() {
char cwdName[2];
strcpy(cwdName,"/");
Dir dir=SPIFFS.openDir(cwdName);
while( dir.next()) {
String fn, fs;
fn = dir.fileName();
fn.remove(0, 1);
fs = String(dir.fileSize());
Serial.println("<" + fn + ">
size=" + fs);
} // end while
}
void display_Running_Sketch (void){
String the_path = __FILE__;
int slash_loc = the_path.lastIndexOf('/');
String the_cpp_name =
the_path.substring(slash_loc+1);
int dot_loc = the_cpp_name.lastIndexOf('.');
String the_sketchname = the_cpp_name.substring(0,
dot_loc);
Serial.print("\nArduino is running Sketch: ");
Serial.println(the_sketchname);
Serial.print("Compiled on: ");
Serial.print(__DATE__);
Serial.print(" at ");
Serial.print(__TIME__);
Serial.print("\n");
}
void setup(void){
Serial.begin(9600);
delay(500);
WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println();
// Set Fix IP
WiFi.config(myIP, WiFi.gatewayIP(),
WiFi.subnetMask());
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
tft.begin();
tft.fillScreen(ILI9341_BLACK);
tft.setRotation(3);
Serial.print("tft.width=");
Serial.println(tft.width());
Serial.print("tft.height=");
Serial.println(tft.height());
if (SPIFFS.begin()) {
Serial.println("SPIFFS opened!");
// Show BMP file
char path[32];
strcpy(path, "/image.bmp");
if (SPIFFS.exists(path)) {
digitalWrite(TFT_LED,
HIGH);
bmpDraw(path);
} else {
Serial.print(path);
Serial.println(" NOT
found");
digitalWrite(TFT_LED, LOW);
tft.fillScreen(ILI9341_BLACK);
}
} else {
while (1) {
Serial.println("SPIFFS
failed!");
delay(1000);
}
}
//FTP Setup, ensure SPIFFS is started before ftp;
//username, password for ftp. set ports in
ESP8266FtpServer.h (default 21, 50009 for PASV)
ftpSrv.begin("esp8266","esp8266");
}
void loop(void){
static long ResetTime = 0x7fffffff;
ftpSrv.handleFTP();
yield();
long now = millis();
if (now - lastTime > 1000) {
lastTime = now;
Serial.print("IP Address=");
Serial.print(WiFi.localIP());
Serial.print(" ResetTime=");
Serial.print(ResetTime);
Serial.print(" ");
Serial.print("now=");
Serial.println(now);
if (ResetTime < now) ESP.reset();
File bmpFile;
// upload.txtが有れば10秒後に強制Reset
if (SPIFFS.exists("/upload.txt"))
{
Serial.println("upload.txt
found");
SPIFFS.remove("/upload.txt");
ResetTime = now + 10000;
//10秒後にreset
}
}
}
// This function opens a Windows Bitmap (BMP) file and
// displays it at the given coordinates. It's sped
up
// by reading many pixels worth of data at a time
// (rather than pixel by pixel). Increasing the
buffer
// size takes more of the Arduino's precious RAM but
// makes loading a little faster. 20 pixels seems a
// good balance.
#define BUFFPIXEL 20
void bmpDraw(char *filename) {
File bmpFile;
uint8_t
bmpDepth;
// Bit depth (currently must be 24)
uint32_t
bmpImageoffset;
// Start of image data in file
uint32_t
rowSize;
// Not always = bmpWidth; may have padding
uint8_t sdbuffer[3*BUFFPIXEL]; // pixel
buffer (R+G+B per pixel)
uint8_t buffidx = sizeof(sdbuffer); //
Current position in sdbuffer
boolean goodBmp =
false; // Set to true
on valid header parse
boolean flip =
true; // BMP is
stored bottom-to-top
uint8_t r, g, b;
uint32_t pos = 0, startTime = millis();
Serial.println();
Serial.print(F("Loading image '"));
Serial.print(filename);
Serial.println('\'');
// Open requested file on SD card
;
if (!(bmpFile = SPIFFS.open(filename,"r"))) {
Serial.print(F("File not found"));
return;
}
// Parse BMP header
if(read16(bmpFile) == 0x4D42) { // BMP signature
Serial.print(F("File size: "));
Serial.println(read32(bmpFile));
(void)read32(bmpFile); // Read &
ignore creator bytes
bmpImageoffset = read32(bmpFile); //
Start of image data
Serial.print(F("Image Offset: "));
Serial.println(bmpImageoffset, DEC);
// Read DIB header
Serial.print(F("Header size: "));
Serial.println(read32(bmpFile));
int bmpWidth = read32(bmpFile);
int bmpHeight = read32(bmpFile);
int offsetX = 0;
int offsetY = 0;
int draw_width = bmpWidth;
int draw_height = bmpHeight;
if (bmpWidth <= tft.width()) {
offsetX = (tft.width() -
bmpWidth) / 2;
} else {
draw_width = tft.width();
}
if (bmpHeight <= tft.height()) {
offsetY = (tft.height() -
bmpHeight) / 2;
} else {
draw_height = tft.height();
}
Serial.print("offsetX=");
Serial.println(offsetX);
Serial.print("offsetY=");
Serial.println(offsetY);
Serial.print("draw_width=");
Serial.println(draw_width);
Serial.print("draw_height=");
Serial.println(draw_height);
if(read16(bmpFile) == 1) { // # planes
-- must be '1'
bmpDepth = read16(bmpFile);
// bits per pixel
Serial.print(F("Bit Depth:
")); Serial.println(bmpDepth);
if((bmpDepth == 24)
&& (read32(bmpFile) == 0)) { // 0 = uncompressed
goodBmp = true;
// Supported BMP format -- proceed!
Serial.print(F("Image size: "));
Serial.print(bmpWidth);
Serial.print('x');
Serial.println(bmpHeight);
// BMP rows are
padded (if needed) to 4-byte boundary
rowSize =
(bmpWidth * 3 + 3) & ~3;
// If bmpHeight
is negative, image is in top-down order.
// This is not
canon but has been observed in the wild.
if(bmpHeight
< 0) {
bmpHeight = -bmpHeight;
flip = false;
}
for (int row=0;
row<draw_height; row++) { // For each scanline...
//
Seek to start of scan line. It might seem labor-
//
intensive to be doing this on every line, but this
//
method covers a lot of gritty details like cropping
//
and scanline padding. Also, the seek only takes
//
place if the file position actually needs to change
//
(avoids a lot of cluster math in SD library).
if(flip) // Bitmap is stored bottom-to-top order (normal
BMP)
pos = bmpImageoffset + (bmpHeight - 1 - row) * rowSize;
else // Bitmap is stored
top-to-bottom
pos = bmpImageoffset + row * rowSize;
if(bmpFile.position() != pos) { // Need seek?
bmpFile.seek(pos,SeekSet);
buffidx = sizeof(sdbuffer); // Force buffer reload
}
for
(int col=0; col<draw_width; col++) { // For each
pixel...
// Time to read more pixel data?
if (buffidx >= sizeof(sdbuffer)) { // Indeed
bmpFile.read(sdbuffer, sizeof(sdbuffer));
buffidx = 0; // Set index to beginning
}
// Convert pixel from BMP to TFT format, push to display
b = sdbuffer[buffidx++];
g = sdbuffer[buffidx++];
r = sdbuffer[buffidx++];
//tft.pushColor(tft.color565(r,g,b)); // なぜか動かなくなった
tft.drawPixel(col+offsetX, row+offsetY,
tft.color565(r,g,b));
yield();
}
// end pixel
} // end
scanline
Serial.print(F("Loaded in "));
Serial.print(millis() - startTime);
Serial.println(" ms");
} // end goodBmp
}
}
bmpFile.close();
if(!goodBmp) Serial.println(F("BMP format not
recognized."));
}
// These read 16- and 32-bit types from the SD card file.
// BMP data is stored little-endian, Arduino is
little-endian too.
// May need to reverse subscript order if porting
elsewhere.
uint16_t read16(File &f) {
uint16_t result;
((uint8_t *)&result)[0] = f.read(); // LSB
((uint8_t *)&result)[1] = f.read(); // MSB
return result;
}
uint32_t read32(File &f) {
uint32_t result;
((uint8_t *)&result)[0] = f.read(); // LSB
((uint8_t *)&result)[1] = f.read();
((uint8_t *)&result)[2] = f.read();
((uint8_t *)&result)[3] = f.read(); // MSB
return result;
}
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