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    • Touch support after screen rotation F429

    Posted by BillRizer on 2016-04-06 14:13

    Hey,

    I try to run the VSREEN_Sample of Segger on the STM32F429Disc1.
    So i managed to rotate the screen to landscape and the demo is displaying right. But now I have no touc support anymore.

    If I only print a Messagebox I can push the button on another position of the display. So I think the calculatet positions are wrong.

    Do you have any helpt?

    Thanks 😊

    Reads: 10328
    Posted by tarek bouchkati on 2016-04-06 14:58 Tunisia
    I think just swapping X and Y can solve the issue

    Posted by BillRizer on 2016-04-06 15:11

    Hey,

    I swapped X and Y in the driver. But it does not solved the problem.


    Posted by tarek bouchkati on 2016-04-06 16:00 Tunisia

    I have developped a small code testing this : not clean but works for me 😉

    intialization
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    BSP_TS_Init(320, 240); // instead of 240, 320

    stm32f429i_discovery_ts.c
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    /**
  * @brief  Returns status and positions of the touch screen.
  * @param  TsState: Pointer to touch screen current state structure
  */
void BSP_TS_GetState(TS_StateTypeDef* TsState)
{
  static uint32_t _x = 0, _y = 0;
  uint16_t xDiff, yDiff , x , y, xr, yr;
  
  TsState->TouchDetected = TsDrv->DetectTouch(TS_I2C_ADDRESS);
  
  if(TsState->TouchDetected)
  {
    TsDrv->GetXY(TS_I2C_ADDRESS, &y, &x);//instead of &x, &y
    
    // ......
}
         Posted by BillRizer on 2016-04-07 06:40

    Thanks for your help.

    I am working with the driver delivered by ST. I can switch the variables for x and y. In your example you can define how much pixel the touch screen have. In the driver I can not find such a definition.