esp12f + tft display picture problem

问题描述

 #include <TFT_eSPI.h> 
#include <TJpg_Decoder.h>

When using these two libraries,Found the picture after showing though,但会强制esp8266复位,一直没找到原因,Tested one by one,发现TJpg_Decoder仅仅是一个tjpgImage decoding library,And can't display pictures in between,And the library provides a callback function,to call the function that displays the bitmap on the screen.

解决

注意这个函数

bool tft_output(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t *bitmap)
{
    
  if (y >= tft.height())
    return 0;
  tft.pushImage(x, y, w, h, bitmap);
  // Return 1 to decode next block
  return 1;
}

在setupYou can add this callback function to the
下面就是全部代码：
Just replace the picture with your own to display a picture completely.

#include <Arduino.h>
#include <TFT_eSPI.h> // Include the graphics library (this includes the sprite functions)
#include <TJpg_Decoder.h>
#include<EEPROM.h>
TFT_eSPI    tft = TFT_eSPI();         // Create object "tft"
TFT_eSprite img = TFT_eSprite(&tft);  // Create Sprite object "img" with pointer to "tft" object

#include "../include/jpeg/jpeg1.h"
#define LCD_BC 5 // This is my hardware to adjust the backlightIO,Everyone can ignore it
// TFT屏幕输出函数
bool tft_output(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t *bitmap)
{
    
  if (y >= tft.height())
    return 0;
  tft.pushImage(x, y, w, h, bitmap);
  // Return 1 to decode next block
  return 1;
}


void setup()
{
    
  pinMode(LCD_BC,OUTPUT);// This is my hardware to adjust the backlightIO,Everyone can ignore it
  analogWrite(LCD_BC,0);// This is my hardware to adjust the backlightIO,Everyone can ignore it
  Serial.begin(115200);
  tft.begin();
  tft.fillScreen(TFT_BLUE);

  // The jpeg image can be scaled by a factor of 1, 2, 4, or 8
  TJpgDec.setJpgScale(1);
  TJpgDec.setSwapBytes(true);
  TJpgDec.setCallback(tft_output);


}

void loop()
{
    
  // Time recorded for test purposes
  uint32_t t = millis();

  // Get the width and height in pixels of the jpeg if you wish
  uint16_t w = 0, h = 0;
  TJpgDec.getJpgSize(&w, &h, panda, sizeof(panda));
  Serial.print("Width = "); Serial.print(w); Serial.print(", height = "); Serial.println(h);

  // Draw the image, top left at 0,0
  TJpgDec.drawJpg(0, 0, panda, sizeof(panda));

  // How much time did rendering take (ESP8266 80MHz 473ms, 160MHz 266ms, ESP32 SPI 116ms)
  t = millis() - t;
  Serial.print(t); Serial.println(" ms");

  // Wait before drawing again
  delay(2000);
}