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STM32 SPI驱动TFT LCD

发布时间:2020-08-24 发布时间:
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利用STM32F030 的SPI驱动TFT LCD,我使用的LCD为240*320像素的2.4寸彩屏,驱动IC为ili9341,只需四根线即可点亮LCD,先贴上SPI配置吧,声明一下,F030的SPI配置和F103等的配置有些不一样

/*LCD SPI Init*/
void SPI_Config(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
  SPI_InitTypeDef  SPI_InitStructure;
  /* Enable the SPI periph */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);//
  
  /* Enable SCK, MOSI GPIO clocks */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
  
 // GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_0);
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_0);//SCK PIN
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_0);//SDAPIN
  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_DOWN;//GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;

  /* SPI SCK, MOSIpin configuration */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_13 | GPIO_Pin_15;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
  
  /* SPI configuration -------------------------------------------------------*/
//  SPI_I2S_DeInit(SPI2);
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//SPI_Direction_1Line_Tx;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;//SPI_CPOL_Low;SPI_CPOL_High
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;//SPI_CPHA_1Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;//SPI_NSS_Soft;  SPI_NSS_Hard
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  

  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_Init(SPI2, &SPI_InitStructure);
  
  /* Initialize the FIFO threshold */
  SPI_RxFIFOThresholdConfig(SPI2, SPI_RxFIFOThreshold_QF);
  
  /* Enable the Rx buffer not empty interrupt */
 // SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_RXNE, ENABLE);
//  /* Enable the SPI Error interrupt */
//  SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_ERR, ENABLE);
  
  /* Enable the SPI peripheral */
  SPI_Cmd(SPI2, ENABLE);
  
  /* Configure the SPI interrupt priority */
//  NVIC_InitStructure.NVIC_IRQChannel = SPI2_IRQn;
//  NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
//  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//  NVIC_Init(&NVIC_InitStructure);
}




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