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TFT display on STM32F103RDT6

F B over 11 years ago

Hi everyone,

I need help for setting up TFT display on STM32F103RDT6. I'm using display DT028TFT
with R61505U driver.

DATA pins: PB0(0), PB1(1), PA2(2), PB3(3), PB4(4), PB5(5), PB6(6), PB7(7), PB8(8), PB9(9), PC6(10), PC7(11), PB12(12), PB13(13), PB14(14), PB15(15)

RS: PC5
WR: PA15
RD: PC4
CS: PA0
RESET: PA1

The initial sequence for display looks good, it's working on STM32F103ZE with FSMC
Here is my code but it's not working

void Write_Cmd(uint16_t LCD_Reg)
{
        uint16_t maskPA2=0x0004;
        uint16_t maskPC6_7=0x0C00;
        uint16_t PA2=0x0;
        uint16_t PC6_7=0x0;

        PA2 = LCD_Reg &     maskPA2;
        PC6_7 = LCD_Reg & maskPC6_7;

        GPIOA->BRR=GPIO_BRR_BR0;   // CS=0
        GPIOC->BRR=GPIO_BRR_BR5;   // RS=0

        GPIOB->ODR = LCD_Reg;

           if(PA2==0x4){                  //
              GPIOA->BSRR=GPIO_BSRR_BS2;
                        }
           else{
              GPIOA->BRR=GPIO_BRR_BR2;
                        }


                switch (PC6_7) {
        case 0x0:
                    GPIOC->BRR=GPIO_BRR_BR6;
                    GPIOC->BRR=GPIO_BRR_BR7;
                                        break;

        case 0x0400:
                    GPIOC->BSRR=GPIO_BSRR_BS6;
                    GPIOC->BRR=GPIO_BRR_BR7;
                                        break;

        case 0x0800:
                    GPIOC->BRR=GPIO_BRR_BR6;
                    GPIOC->BSRR=GPIO_BSRR_BS7;
                                        break;

        case 0x0C00:
                    GPIOC->BSRR=GPIO_BSRR_BS6;
                    GPIOC->BSRR=GPIO_BSRR_BS7;
                                        break;
                                                }

                  GPIOA->BRR=GPIO_BRR_BR15;         // WR=0
                  GPIOA->BSRR=GPIO_BSRR_BS15;       // WR=1

                  GPIOA->BSRR=GPIO_BSRR_BS0;     // CS=1

}

void Write_Dat(uint16_t LCD_Dat)
{

        uint16_t maskPA2=0x0004;
        uint16_t maskPC6_7=0x0C00;
        uint16_t PA2=0x0;
        uint16_t PC6_7=0x0;

        PA2 = LCD_Dat &     maskPA2;
        PC6_7 = LCD_Dat & maskPC6_7;


        GPIOA->BRR=GPIO_BRR_BR0;       // CS=0
        GPIOC->BSRR=GPIO_BSRR_BS5;     // RS=1
        GPIOB->ODR = LCD_Dat;

           if(PA2==0x4){
              GPIOA->BSRR=GPIO_BSRR_BS2;
                        }
           else{
              GPIOA->BRR=GPIO_BRR_BR2;
                                                                                                }


              switch (PC6_7) {
        case 0x0:
                    GPIOC->BRR=GPIO_BRR_BR6;
                    GPIOC->BRR=GPIO_BRR_BR7;
                                        break;

        case 0x0400:
                    GPIOC->BSRR=GPIO_BSRR_BS6;
                    GPIOC->BRR=GPIO_BRR_BR7;
                                        break;

        case 0x0800:
                    GPIOC->BRR=GPIO_BRR_BR6;
                    GPIOC->BSRR=GPIO_BSRR_BS7;
                                        break;

  case 0x0C00:
                    GPIOC->BSRR=GPIO_BSRR_BS6;
                    GPIOC->BSRR=GPIO_BSRR_BS7;
                                        break;
                                                }

                  GPIOA->BRR=GPIO_BRR_BR15;        // WR=0
                  GPIOA->BSRR=GPIO_BSRR_BS15;           // WR=1

                  GPIOA->BSRR=GPIO_BSRR_BS0;    // CS=1

}

void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_Dat)
{
        Write_Cmd(LCD_Reg);
        Write_Dat(LCD_Dat);
}

void LCD_WriteRAM_Prepare(void)
{
        Write_Cmd(0x0022);
}


void LCD_WriteRAM(uint16_t RGB_Code)
{
  Write_Dat(RGB_Code);
}