PSoC™ 6 Forum Discussions

Hello,

I would like to drive TFT 480x272/RGB/16bpp using PSoC 6.  The MCU provides "Graphic LCD Controller" component to do that, but it needs an external RAM buffer. There are larger RAM PSoC6(512kB 1024kB) on the market. Theoretically it should be possible to place a frame buffer into internal RAM and operating display(refreshing, hsync, vsysnc, DE, clock) using DMA+UDB logic without external RAM.

Does anyone have experience with such a solution?

Than you,

Jan

hello.

Please inquire about SAR DMA interrupt.

I tested it using the test_adc1() function in adc_core.c .

* condition

 - target : CY8C6136

 - SAR : 4 channel

 - DMA : channel 0

* case-1

 #define TEST 1 // Normal operation such as interrupt generation

* case-2

 #define TEST 0

  -> DMA works well

  -> Interrupt related service routine address/register normal -> Do not go to interrupt routine

It has to be used like case-2 for compatibility with existing projects, and has been progressing without any problems in other MCUs.

All peripheral configurations are as in case-2, and other interrupts are judged in the same situation.

I want to attach an iar project that contains only the relevant content, but it cannot be attached due to a capacity problem, so only some files are attached.

In this regard, please review which part should be checked.

thank you

/*******************************************************************************

* Function Name:

********************************************************************************

* Summary:

*

* Parameters:

*

* Return:

*******************************************************************************/

void test_adc1(void)

{

#if TEST == 1

  in_adc1_init();

  while(1)

  {

    Cy_SAR_StartConvert(SAR, CY_SAR_START_CONVERT_SINGLE_SHOT);

    Cy_SysLib_Delay(1000);

  }

#else

  adc_core_init();

  while(1)

  {

    adc_conversion_start(ADC_CH_1);

    Cy_SysLib_Delay(1000);

  }

#endif

}