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【ART-PI】STM32H750XBH6 RT-Thread 点亮LCD

发布于 2021-03-28 21:00:12 浏览：1540 订阅该版

[tocm]

[RT-Thread 入门学习笔记 - 目录](https://club.rt-thread.org/ask/article/3420.html)

[【ART-PI】STM32H750XBH6 - 入手篇](https://club.rt-thread.org/ask/article/2462.html)

[【ART-PI】STM32H750XBH6 - RT-Thread 最小系统移植](https://club.rt-thread.org/ask/article/2469.html)

[【ART-PI】RT-Thread Freemodbus RS485 RTU 从机](https://club.rt-thread.org/ask/article/2477.html)

[【ART-PI】RT-Thread 开启RTC 与 Alarm组件](https://club.rt-thread.org/ask/article/2501.html)

[【ART-PI】STM32H750XBH6 RT-Thread 点亮LCD](https://club.rt-thread.org/ask/article/2676.html)

## 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

![2021-03-28_200602.png](https://oss-club.rt-thread.org/uploads/20210328/92648bf76063f3c26baa808ae28e55a9.png)

![2021-03-28_200731.png](https://oss-club.rt-thread.org/uploads/20210328/e55d0acac16ceaf5e1fc9fbab6d6efe6.png)

![2021-03-28_200806.png](https://oss-club.rt-thread.org/uploads/20210328/5591846a5b11a5ab6eb818e91ee5c359.png)

![2021-03-28_200849.png](https://oss-club.rt-thread.org/uploads/20210328/16a984635eab6e4a4680520a1da6e736.png)

- 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】。

![2021-03-28_202125.png](https://oss-club.rt-thread.org/uploads/20210328/5de5507eb7b1f871c6d9bd5d8407003b.png)

![2021-03-28_205515.png](https://oss-club.rt-thread.org/uploads/20210328/8c63498ebbf49b0948957afda7f4291a.png)

```
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 */
  }
}
```
- 重新编译下载运行，发现LCD可以成功的点亮了

![2021-03-28_205526.png](https://oss-club.rt-thread.org/uploads/20210328/7e3327eb181507e26582126fdbbf3827.png)

- 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