STM32F051 SPI problem, help

[monta]

Posted on November 06, 2015 at 16:10

Hi there,

I'm trying to communicate to my SPI TFT LCD module. Previously I used to do it with an F4 discovery board, now I want to use an STM32F051 , here is my code:

#include <stm32f0xx.h>

#include <stm32f0xx_rcc.h>#include <stm32f0xx_gpio.h>#include <stm32f0xx_spi.h>#define CSPin GPIO_Pin_1#define ResPin GPIO_Pin_0#define AOPin GPIO_Pin_4#define DatPin GPIO_Pin_15#define ClkPin GPIO_Pin_13#define BLPin GPIO_Pin_5enum Colours{ Black = 0x0000, Blue = 0x0010, Red = 0x8000, Magenta = 0x8010, Green = 0x0400, Cyan = 0x0410, Yellow = 0x8400, White = 0xFFFF, FlatBlue = 0x1DBF};typedef uint16_t Colours8;#define XPix 128#define YPix 128GPIO_InitTypeDef GP_InitDef;SPI_InitTypeDef SPI_InitDef;void initGPIO(){ RCC->AHBENR |= RCC_AHBPeriph_GPIOB; GP_InitDef.GPIO_Pin = CSPin | ResPin | AOPin; GP_InitDef.GPIO_Mode = GPIO_Mode_OUT; GP_InitDef.GPIO_OType = GPIO_OType_PP; GP_InitDef.GPIO_PuPd = GPIO_PuPd_NOPULL; GP_InitDef.GPIO_Speed = GPIO_Speed_10MHz; GPIO_Init(GPIOB, &GP_InitDef); GP_InitDef.GPIO_Pin = DatPin | ClkPin; GP_InitDef.GPIO_Mode = GPIO_Mode_AF; GPIO_Init(GPIOB, &GP_InitDef); GPIO_PinAFConfig(GPIOB, ClkPin, GPIO_AF_0); GPIO_PinAFConfig(GPIOB, DatPin, GPIO_AF_0);}void initSPI(){ RCC->APB2ENR |= RCC_APB2Periph_SPI1; SPI_InitDef.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32; SPI_InitDef.SPI_CPHA = SPI_CPHA_1Edge; SPI_InitDef.SPI_CPOL = SPI_CPOL_Low; SPI_InitDef.SPI_DataSize = SPI_DataSize_8b; SPI_InitDef.SPI_FirstBit = SPI_FirstBit_MSB; SPI_InitDef.SPI_Mode = SPI_Mode_Master; SPI_InitDef.SPI_NSS = SPI_NSS_Soft; SPI_Init(SPI1, &SPI_InitDef); SPI_Cmd(SPI1, ENABLE);}void writeCommand(uint16_t command){ GPIO_ResetBits(GPIOB, AOPin); // Set A0 D/C pin LOW for command select. SPI_I2S_SendData16(SPI1, command); while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET);}void writeData(uint16_t data){ GPIO_SetBits(GPIOB, AOPin); // Set A0 D/C pin LOW for data select. SPI_I2S_SendData16(SPI1, data); while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET);}void writeData16(uint16_t data){ GPIO_SetBits(GPIOB, AOPin); // Set A0 D/C pin LOW for data select. SPI_I2S_SendData16(SPI1, data>>8); while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET); SPI_I2S_SendData16(SPI1, data); while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET);}void SetAddr(uint8_t X1, uint8_t Y1, uint8_t X2, uint8_t Y2){ writeCommand(0x2A); writeData(0x00); writeData(X1); writeData(0x00); writeData(X2); writeCommand(0x2B); writeData(0x00); writeData(32+Y1); writeData(0x00); writeData(32+Y2); writeCommand(0x2C);}void SetScrn(Colours8 Colour){ uint16_t XCnt, YCnt; SetAddr(0, 0, XPix-1, YPix-1); for(XCnt = 0; XCnt<XPix; XCnt++){ for(YCnt = 0; YCnt<YPix; YCnt++){ switch(Colour){ case Black: writeData16(0x0000); break; case Blue: writeData16(0x0010); break; case Red: writeData16(0x8000); break; case Magenta: writeData16(0x8010); break; case Green: writeData16(0x0400); break; case Cyan: writeData16(0x0410); break; case Yellow: writeData16(0x8400); case FlatBlue: writeData16(0x1DBF); break; case White: writeData16(0xFFFF); break; } } }}void initLCD() { int index; GPIO_ResetBits(GPIOB, ResPin); for (index = 0; index < 50000; index++); GPIO_SetBits(GPIOB, ResPin); for (index = 0; index < 50000; index++); GPIO_ResetBits(GPIOB, CSPin); for (index = 0; index < 50000; index++); //Start The LCD initializing. writeCommand(0x01); //Software reset for (index = 0; index < 50000; index++); writeCommand(0x11); // Exit Sleep for (index = 0; index < 10000; index++); writeCommand(0x26); //Set default gamma writeData(0x04); for (index = 0; index < 5000; index++); writeCommand(0xC0); //Set Power Control 1 writeData(0x1F); for (index = 0; index < 5000; index++); writeCommand(0xC1); //Set Power Control 2 writeData(0x00); for (index = 0; index < 5000; index++); writeCommand(0xC2); //Set Power Control 3 writeData(0x00); writeData(0x07); for (index = 0; index < 5000; index++); writeCommand(0xC3); //Set Power Control 4 (Idle mode) writeData(0x00); writeData(0x07); for (index = 0; index < 5000; index++); writeCommand(0xC5); //Set VCom Control 1 writeData(0x24); // VComH = 3v writeData(0xC8); // VComL = 0v for (index = 0; index < 5000; index++); writeCommand(0x38); //Idle mode off for (index = 0; index < 5000; index++); writeCommand(0x3A); //Set pixel mode writeData(0x05); for (index = 0; index < 5000; index++); writeCommand(0x36); //Set Memory access mode writeData(0x08); for (index = 0; index < 5000; index++); writeCommand(0x29); //Display on for (index = 0; index < 5000; index++); writeCommand(0x2C);//Memory Write for (index = 0; index < 5000; index++); //Display Something SetScrn(Black); for (index = 0; index < 5000; index++); return ;}int main(void){ initGPIO(); initSPI(); initLCD(); return 0;}I connected everything as it should be , but not getting any response from the LCD. Just bright white screen ( backlight )