Code:
#include <Adafruit_GFX.h> // Core graphics library
#include <ST7735_t3.h> // Hardware-specific library
#include <ST7789_t3.h> // Hardware-specific library
#include <SPI.h>
#include <SD.h>
#include <Arduino_ST7789.h> // Hardware-specific library for ST7789 (with or without CS pin)
#define BUFFPIXEL 20
File myFile;
char picturefilename[300];
char picturefiledelay[300];
File root;
const int chipSelect = BUILTIN_SDCARD;
#define filenameflag = 1;
#define timedelaynameflag = 2;
#define TFT_SCLK 13 // SCLK can also use pin 14
#define TFT_MOSI 11 // MOSI can also use pin 7
#define TFT_CS 10 // CS & DC can use pins 2, 6, 9, 10, 15, 20, 21, 22, 23
#define TFT_DC 9 // but certain pairs must NOT be used: 2+10, 6+9, 20+23, 21+22
#define TFT_RST 8 // RST can use any pin
#define SD_CS BUILTIN_SDCARD // CS for SD card, can use any pin
// Option 1: use any pins but a little slower
// Note: code will detect if specified pins are the hardware SPI pins
// and will use hardware SPI if appropriate
// For 1.44" and 1.8" TFT with ST7735 use
//ST7735_t3 tft = ST7735_t3(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);
// For 1.54" or other TFT with ST7789, This has worked with some ST7789
// displays without CS pins, for those you can pass in -1 or 0xff for CS
// More notes by the tft.init call
//ST7789_t3 tft = ST7789_t3(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);
Arduino_ST7789 tft = Arduino_ST7789(-1, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_CS); //for display with CS pin and DC via 9bit SPI
float p = 3.1415926;
void setup(void)
{
pinMode(SD_CS, INPUT_PULLUP); // don't touch the SD card
Serial.begin(9600);
Serial.print("hello!");
// Or use this initializer (uncomment) if you're using a 1.54" 240x240 TFT
tft.init(240, 240); // initialize a ST7789 chip, 240x240 pixels
tft.fillScreen(BLACK); red
delay(5000);
tft.fillScreen(BLUE);
delay(5000);
tft.fillScreen(YELLOW);
delay(5000);
Serial.println("Initializing SD card...");
if (!SD.begin(SD_CS)) {
Serial.println("failed!");
tft.fillScreen(ST7735_BLACK);
tft.setCursor(5, tft.height()/2 - 6);
tft.print("Unable to access");
tft.setCursor(32, tft.height()/2 + 6);
tft.print("SD card");
while (1) {
writedrawtext("Error with SD Card", ST7735_WHITE, 0 ,0);
}
}
Serial.println("Screen and SD card has all started");
}
void loop()
{
int i, ptr2, timedelay;
String tmp;
bmpDraw("320x320.bmp",0,0);
delay(1000);
}
#define BUFFPIXEL 20
void bmpDraw(const char *filename, uint8_t x, uint8_t y) {
File bmpFile;
int bmpWidth, bmpHeight; // W+H in pixels
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
int w, h, row, col;
uint8_t r, g, b;
uint32_t pos = 0, startTime = millis();
if((x >= tft.width()) || (y >= tft.height())) return;
Serial.println();
Serial.print("Loading image '");
Serial.print(filename);
Serial.println('\'');
// Open requested file on SD card
bmpFile = SD.open(filename);
if (!bmpFile) {
Serial.print("File not found");
tft.fillScreen(ST7735_BLACK);
tft.setCursor(12, tft.height()/2 - 12);
tft.print("Unable to");
tft.setCursor(12, tft.height()/2 - 0);
tft.print("read file: ");
tft.setCursor(12, tft.height()/2 + 12);
tft.setTextColor(ST7735_YELLOW);
tft.print(filename);
return;
}
// Parse BMP header
if(read16(bmpFile) == 0x4D42) { // BMP signature
Serial.print("File size: "); Serial.println(read32(bmpFile));
(void)read32(bmpFile); // Read & ignore creator bytes
bmpImageoffset = read32(bmpFile); // Start of image data
Serial.print("Image Offset: "); Serial.println(bmpImageoffset, DEC);
// Read DIB header
Serial.print("Header size: "); Serial.println(read32(bmpFile));
bmpWidth = read32(bmpFile);
bmpHeight = read32(bmpFile);
if(read16(bmpFile) == 1) { // # planes -- must be '1'
bmpDepth = read16(bmpFile); // bits per pixel
Serial.print("Bit Depth: "); Serial.println(bmpDepth);
if((bmpDepth == 24) && (read32(bmpFile) == 0)) { // 0 = uncompressed
goodBmp = true; // Supported BMP format -- proceed!
Serial.print("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;
}
// Crop area to be loaded
w = bmpWidth;
h = bmpHeight;
if((x+w-1) >= tft.width()) w = tft.width() - x;
if((y+h-1) >= tft.height()) h = tft.height() - y;
// Set TFT address window to clipped image bounds
tft.setAddrWindow(x, y, x+w-1, y+h-1);
for (row=0; row<h; 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);
buffidx = sizeof(sdbuffer); // Force buffer reload
}
for (col=0; col<w; 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));
tft.pushColor(tft.Color565(r,g,b));
} // end pixel
} // end scanline
Serial.print("Loaded in ");
Serial.print(millis() - startTime);
Serial.println(" ms");
} // end goodBmp
}
}
bmpFile.close();
if(!goodBmp)
{
tft.fillScreen(ST7735_BLACK);
writedrawtext("Error with picture format", ST7735_WHITE, 0, 0);
writedrawtext(filename, ST7735_WHITE, 0, 40);
}
}
// 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;
}
void writedrawtext(const char *text, uint16_t color, int x, int y) {
tft.setCursor(x, y);
tft.setTextColor(color);
tft.setTextWrap(true);
tft.print(text);
}
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