前言
- 自己买的ART-Pi板,一直没有时间去玩转,今天有点时间,打算让它跑跑GUI.
- 这次点亮的是ART-Pi三件套里的多媒体板上的LCD,通过原理图查看,是个SPI屏
- 没有使用ART-Pi的BSP工程
配置与调试
- 驱动ART-Pi自带的屏,需要通过menuconfig,配置一下
- 需要通过menuconfig关闭板载的LCD
- 编译,下载运行,发现,LCD无法点亮,开机卡个半死,提示SPI通信失败,【白屏】。
Warning: There is no enough buffer for saving async log, please increase the ULOG_ASYNC_OUTPUT_BUF_SIZE option.
[1322] I/drv.spi: spi transfer error : 1
[1322] I/drv.spi_lcd: lcd_write_cmd error. 0
[2322] I/drv.spi: spi transfer error : 1
[2322] I/drv.spi_lcd: lcd_write_data error. 0
[3322] I/drv.spi: spi transfer error : 1
[3322] I/drv.spi_lcd: lcd_write_data error. 0
[4322] I/drv.spi: spi transfer error : 1
[4322] I/drv.spi_lcd: lcd_write_data error. 0
- 查看SPI驱动,暂时没发现问题,通过软件调试,发现SPI无法正常的发送
- 查看SPI引脚配置,发现问题,没有配置SPI2的引脚
- 通过STM32CubeMX配置SPI2的引脚,会更新:stm32h7xx_hal_msp.c
- 可以通过ART-Pi官网提供的例程里,把SPI2的引脚配置复制过来
/**
* @brief SPI MSP Initialization
* This function configures the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
/* USER CODE END SPI1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**SPI1 GPIO Configuration
PB5 ------> SPI1_MOSI
PG9 ------> SPI1_MISO
PA5 ------> SPI1_SCK
*/
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN SPI1_MspInit 1 */
/* USER CODE END SPI1_MspInit 1 */
}
else if(hspi->Instance==SPI2) /* ART-Pi SPI LCD的引脚配置 */
{
/* USER CODE BEGIN SPI2_MspInit 0 */
/* USER CODE END SPI2_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI2_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
/**SPI2 GPIO Configuration
PI1 ------> SPI2_SCK
PI2 ------> SPI2_MISO
PI3 ------> SPI2_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
/* SPI2 interrupt Init */
HAL_NVIC_SetPriority(SPI2_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(SPI2_IRQn);
/* USER CODE BEGIN SPI2_MspInit 1 */
/* USER CODE END SPI2_MspInit 1 */
}
else if(hspi->Instance==SPI4)
{
/* USER CODE BEGIN SPI4_MspInit 0 */
/* USER CODE END SPI4_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI4_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
/**SPI4 GPIO Configuration
PE2 ------> SPI4_SCK
PE5 ------> SPI4_MISO
PE6 ------> SPI4_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_5|GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI4;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
/* USER CODE BEGIN SPI4_MspInit 1 */
/* USER CODE END SPI4_MspInit 1 */
}
}
- 通过代码查看,LCD驱动运行的是:
drv_spi_ili9488.c
里面的
总结
- 遇到问题,先软件调试,认真分析,对比总结,就会有解决问题的思路
- ART-Pi资源丰富,可以用于进一步的学习与研究