STM32L151C8用硬件SPI驱动LCD，为啥总是不行

流芷静兰 · 发表于 2019-3-2 14:33:48

STM32L151C8用硬件SPI驱动LCD，驱动芯片是ST7735S，0.96寸，屏一直是花的，
大神们帮我看看到底哪里出了问题

[mw_shl_code=c,true]SPI_HandleTypeDef SPI1_Handler;

int main(void)
{

  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
LCD_Gpio_Init();
MX_SPI1_Init();
LCD_Init();
HAL_Delay(100);
LCD_Clear(WHITE);
while(1)
  {
}

}

void MX_SPI1_Init(void)
{
__HAL_RCC_SPI1_CLK_ENABLE();       //使能SPI1时钟
  SPI1_Handler.Instance = SPI1;
  SPI1_Handler.Init.Mode = SPI_MODE_MASTER;
  SPI1_Handler.Init.Direction = SPI_DIRECTION_2LINES;
  SPI1_Handler.Init.DataSize = SPI_DATASIZE_8BIT;
  SPI1_Handler.Init.CLKPolarity = SPI_POLARITY_LOW;
  SPI1_Handler.Init.CLKPhase = SPI_PHASE_1EDGE;
  SPI1_Handler.Init.NSS = SPI_NSS_SOFT;
  SPI1_Handler.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
  SPI1_Handler.Init.FirstBit = SPI_FIRSTBIT_MSB;
  SPI1_Handler.Init.TIMode = SPI_TIMODE_DISABLE;
  SPI1_Handler.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  SPI1_Handler.Init.CRCPolynomial = 7;
  HAL_SPI_Init(&SPI1_Handler); //初始化SPI1

  __HAL_SPI_ENABLE(&SPI1_Handler);                   //使能SPI1
}

void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_SPI1_CLK_ENABLE();

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_7|GPIO_PIN_5, GPIO_PIN_SET);

GPIO_InitStruct.Pin=GPIO_PIN_5|GPIO_PIN_7;
  GPIO_InitStruct.Mode=GPIO_MODE_AF_PP;             //复用推挽输出
  GPIO_InitStruct.Pull=GPIO_PULLUP;                //上拉
  GPIO_InitStruct.Speed=GPIO_SPEED_FREQ_VERY_HIGH; //50Mhz
  GPIO_InitStruct.Alternate=GPIO_AF5_SPI1;          //PA5  7复用为SPI1
  HAL_GPIO_Init(GPIOA,&GPIO_InitStruct);

}

/**
* TxData 要写入的字节
* size 写入字节的长度
*/
void LCD_SPI_Send(u8 *TxData,u16 size)
{
HAL_SPI_Transmit(&SPI1_Handler,TxData,size,1000);
}

void LCD_Gpio_Init(void)
{
GPIO_InitTypeDef GPIO_Initure;

  __HAL_RCC_GPIOA_CLK_ENABLE();

//LCD_PWR: PA6
//LCD_RST: PA2
//LCD_DC: PA4
//LCD_CS: PA3

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_6|GPIO_PIN_2|GPIO_PIN_3 |GPIO_PIN_4, GPIO_PIN_SET);
   /*Configure GPIO pins : PA2 PA3 PA4 PA6 */
  GPIO_Initure.Pin = GPIO_PIN_2|GPIO_PIN_6;
  GPIO_Initure.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_Initure.Pull = GPIO_PULLUP;
  GPIO_Initure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_Initure);

   /*Configure GPIO pin : PA3 */
  GPIO_Initure.Pin = GPIO_PIN_3;
  GPIO_Initure.Mode = GPIO_MODE_OUTPUT_OD;
  GPIO_Initure.Pull = GPIO_PULLUP;
  GPIO_Initure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_Initure);

/*Configure GPIO pin : PA4 */
  GPIO_Initure.Pin = GPIO_PIN_4;
  GPIO_Initure.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_Initure.Pull = GPIO_PULLDOWN;
  GPIO_Initure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_Initure);
}

//写命令
void LCD_Write_Cmd(u8 cmd)
{
LCD_DC(0);
LCD_CS(0);
LCD_SPI_Send(&cmd, 1);
LCD_CS(1);
}

//写一个字节
void LCD_Write_Data1(u8 data)
{
LCD_DC(1);
LCD_CS(0);
LCD_SPI_Send(&data, 1);
LCD_CS(1);
}

//写2个字节
void LCD_Write_Data(u8 dat)
{
LCD_DC(1);
LCD_CS(0);
LCD_SPI_Send(&dat, 2);
LCD_CS(1);
}
//设置起点终点坐标
void LCD_Address_Set(u16 x_start, u16 y_start, u16 x_end, u16 y_end)
{
LCD_Write_Cmd(0x2a);//列
LCD_Write_Data(x_start);
LCD_Write_Data(x_end);

LCD_Write_Cmd(0x2b);//行
LCD_Write_Data(y_start);
LCD_Write_Data(y_end);

LCD_Write_Cmd(0x2C);//写入行列
}

//LCD清屏
void LCD_Clear(u16 Color)
{
u16 i,j;
LCD_Address_Set(0,0,LCD_Width-1,LCD_Height-1);
for(i=0;i<LCD_Width;i++)
   {
for (j=0;j<LCD_Height;j++)
{
LCD_Write_Data(Color);
}
   }
}

//LCD初始化
void LCD_Init(void)
{
LCD_RST(0);
HAL_Delay(20);
LCD_RST(1);
HAL_Delay(20);
LCD_PWR(1);

LCD_Write_Cmd(0x11); //sleep out
HAL_Delay(100);

LCD_Write_Cmd(0x21); //display inverson on

LCD_Write_Cmd(0xB1); //frame rate control
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);

LCD_Write_Cmd(0xB2);//frame rate control
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);

LCD_Write_Cmd(0xB3); //frame rate control
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x05);
LCD_Write_Data1(0x3A);
LCD_Write_Data1(0x3A);

LCD_Write_Cmd(0xB4);//display inversion on
LCD_Write_Data1(0x03);

LCD_Write_Cmd(0xC0);//power control1
LCD_Write_Data1(0x62);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x04);

LCD_Write_Cmd(0xC1);//power control2
LCD_Write_Data1(0xC0);

LCD_Write_Cmd(0xC2);//power control3
LCD_Write_Data1(0x0D);
LCD_Write_Data1(0x00);

LCD_Write_Cmd(0xC3);//power control4
LCD_Write_Data1(0x8D);
LCD_Write_Data1(0x6A);

LCD_Write_Cmd(0xC4);//power control5
LCD_Write_Data1(0x8D);
LCD_Write_Data1(0xEE);

LCD_Write_Cmd(0xC5);  /*VCOM*/
LCD_Write_Data1(0x0E);

LCD_Write_Cmd(0xE0);//gamma +polarity
LCD_Write_Data1(0x10);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x03);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x07);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x07);
LCD_Write_Data1(0x0A);
LCD_Write_Data1(0x12);
LCD_Write_Data1(0x27);
LCD_Write_Data1(0x37);
LCD_Write_Data1(0x00);
LCD_Write_Data1(0x0D);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x10);

LCD_Write_Cmd(0xE1);//gamma -polarity
LCD_Write_Data1(0x10);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x03);
LCD_Write_Data1(0x03);
LCD_Write_Data1(0x0F);
LCD_Write_Data1(0x06);
LCD_Write_Data1(0x02);
LCD_Write_Data1(0x08);
LCD_Write_Data1(0x0A);
LCD_Write_Data1(0x13);
LCD_Write_Data1(0x26);
LCD_Write_Data1(0x36);
LCD_Write_Data1(0x00);
LCD_Write_Data1(0x0D);
LCD_Write_Data1(0x0E);
LCD_Write_Data1(0x10);

LCD_Write_Cmd(0x3A); //interface pixel format
LCD_Write_Data1(0x05);

LCD_Write_Cmd(0x36);//mamory data access control
LCD_Write_Data1(0x78);

LCD_Write_Cmd(0x29); //display on
}[/mw_shl_code]