[SOLVED] TFT reload BMP file every 5 sec then stops

Other Hardware Displays
1

hi all

i have TFT ILI9486 with touch controller

i am using MCUFRIEND_KBV library

i am using the default sketch for BMP for UNO board

my problem is

when the TFT shows the image it refresh every 5 seconds and reload the image

how can i make the image remains stable without reloading

2

3.5inch_Arduino_ILI9486_V1.3

Hi , I hade the same problem . Please read this post .David explain the solution.
Marco

3

Most of my examples do "something".

The BMP example displays every .BMP file that it finds on your SD directory.
Then it starts again.

If you only have one BMP file, it will display it repeatedly.

Look at the example code in the loop().

If you only want to display a BMP with a known name e.g. "filename.bmp" you just say:

   showBMP("filename.bmp", 0, 0);

David.

4

david_prentice:
Most of my examples do "something".

The BMP example displays every .BMP file that it finds on your SD directory.
Then it starts again.

If you only have one BMP file, it will display it repeatedly.

Look at the example code in the loop().

If you only want to display a BMP with a known name e.g. "filename.bmp" you just say:

   showBMP("filename.bmp", 0, 0);

David.

i have modified it but still facing the same problem

 void loop()
{
    char *nm = namebuf + pathlen;
    File f = root.openNextFile();
    uint8_t ret;
    uint32_t start;
    if (f != NULL) {
#ifdef USE_SDFAT
        f.getName(nm, 32 - pathlen);
#else
        strcpy(nm, (char *)f.name());
#endif
        f.close();
        strlwr(nm);
        if (strstr(nm, ".bmp") != NULL && strstr(nm, NAMEMATCH) != NULL) {
            Serial.print(namebuf);
            Serial.print(F(" - "));
            tft.fillScreen(0);
            start = millis();
            ret = showBMP("flower.bmp",0,0);
            switch (ret) {
                case 0:
5

F8VOA:
3.5inch_Arduino_ILI9486_V1.3

Hi , I hade the same problem . Please read this post .David explain the solution.
Marco

thank u very much,but where is this post?

6

Copy-paste text from the Serial Terminal to your message. Then I can see what is going wrong.

Otherwise, Just try:

#include <SPI.h>            // f.k. for Arduino-1.5.2
#include <SD.h>             // Use the official SD library on hardware pins

#include <Adafruit_GFX.h>   // Hardware-specific library
#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;

#define SD_CS     10
#define PALETTEDEPTH   0     // do not support Palette modes

void setup()
{
    uint16_t ID;
    ID = tft.readID();
    Serial.println(ID, HEX);
    tft.begin(ID);
    tft.fillScreen(0x001F);
    bool good = SD.begin(SD_CS);
    if (good) {
        showBMP("/flower.bmp", 0, 0);     //ignore any error return value
    }
}

void loop()
{
}

...
7

david_prentice:
Copy-paste text from the Serial Terminal to your message. Then I can see what is going wrong.

Otherwise, Just try:

#include <SPI.h>            // f.k. for Arduino-1.5.2

#include <SD.h>            // Use the official SD library on hardware pins

#include <Adafruit_GFX.h>  // Hardware-specific library
#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;

#define SD_CS    10
#define PALETTEDEPTH  0    // do not support Palette modes

void setup()
{
    uint16_t ID;
    ID = tft.readID();
    Serial.println(ID, HEX);
    tft.begin(ID);
    tft.fillScreen(0x001F);
    bool good = SD.begin(SD_CS);
    if (good) {
        showBMP("/flower.bmp", 0, 0);    //ignore any error return value
    }
}

void loop()
{
}

...

this code is working perfectly

thank u very much