本帖最后由 HuaWng 于 2024-10-11 21:53 编辑
STM32H7S78-DK是目前ST比较新的一款高性能开发板，虽然自带的FLASH比较小，但是扩展了NOR Flash。启动在片内FLASH，然后通过BOOT跳转到片外FLASH运行。
板载了4个RGB小灯，一个复位按键，一个用户按键，还有WIFI扩展接口，一个800*480分辨率RGB接口屏幕；背面还扩展了Arduino Uno R3接口。总体来讲是功能非常丰富，主打的应用应该是人机交互与处理中枢的角色。
下面介绍一下开发环境：
STM32CubeIde，版本：1.16.0
STM32CubeMx， 版本：6.12.0
STM32CubeProgrammer，版本：2.17.0
推荐大家使用最新的版本，因为最新的板卡往往在最新的版本得到更好的支持，比如最新的bug修复以及更快的编译速度等。
在STM32CubeIde里面，选择New -> STME32 PROJECT
之后在Example Selector里面选择Example Selector，然后选择GPIO Toggle，选择保存位置即可。
对于驱动GPIO，首先需要进行引脚初始化：
- static void MX_GPIO_Init(void)
- {
- GPIO_InitTypeDef GPIO_InitStruct = {0};
- /* USER CODE BEGIN MX_GPIO_Init_1 */
- /* USER CODE END MX_GPIO_Init_1 */
- /* GPIO Ports Clock Enable */
- __HAL_RCC_GPIOM_CLK_ENABLE();
- __HAL_RCC_GPIOO_CLK_ENABLE();
- /*Configure GPIO pin Output Level */
- HAL_GPIO_WritePin(GPIOM, LD4_Pin|LD3_Pin, GPIO_PIN_RESET);
- /*Configure GPIO pin Output Level */
- HAL_GPIO_WritePin(GPIOO, LD1_Pin|LD2_Pin, GPIO_PIN_RESET);
- /*Configure GPIO pins : LD4_Pin LD3_Pin */
- GPIO_InitStruct.Pin = LD4_Pin|LD3_Pin;
- GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
- GPIO_InitStruct.Pull = GPIO_NOPULL;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
- HAL_GPIO_Init(GPIOM, &GPIO_InitStruct);
- /*Configure GPIO pins : LD1_Pin LD2_Pin */
- GPIO_InitStruct.Pin = LD1_Pin|LD2_Pin;
- GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
- GPIO_InitStruct.Pull = GPIO_NOPULL;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
- HAL_GPIO_Init(GPIOO, &GPIO_InitStruct);
- /* USER CODE BEGIN MX_GPIO_Init_2 */
- /* USER CODE END MX_GPIO_Init_2 */
- }
接下来可以可以调用HAL_GPIO_WritePin来控制引脚电平的高低，进而控制LED小灯的亮灭。
- /**
- * [url=home.php?mod=space&uid=247401]@brief[/url] Set or clear the selected data port bit.
- * [url=home.php?mod=space&uid=536309]@NOTE[/url] This function uses GPIOx_BSRR and GPIOx_BRR registers to allow atomic read/modify
- * accesses. In this way, there is no risk of an IRQ occurring between
- * the read and the modify access.
- * @param GPIOx where x can be (A..H and M..P) to select the GPIO peripheral for STM32H7RSxx family
- * @param GPIO_Pin specifies the port bit to be written.
- * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
- * @param PinState specifies the value to be written to the selected bit.
- * This parameter can be one of the GPIO_PinState enum values:
- * [url=home.php?mod=space&uid=2817080]@ARG[/url] GPIO_PIN_RESET: to clear the port pin
- * [url=home.php?mod=space&uid=2817080]@ARG[/url] GPIO_PIN_SET: to set the port pin
- * @retval None
- */
- void HAL_GPIO_WritePin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
- {
- /* Check the parameters */
- assert_param(IS_GPIO_PIN(GPIO_Pin));
- assert_param(IS_GPIO_PIN_ACTION(PinState));
- if (PinState != GPIO_PIN_RESET)
- {
- GPIOx->BSRR = (uint32_t)GPIO_Pin;
- }
- else
- {
- GPIOx->BRR = (uint32_t)GPIO_Pin;
- }
- }
本次实验在主循环中以此翻转小灯状态：
- while (1)
- {
- /* USER CODE END WHILE */
- /* USER CODE BEGIN 3 */
- HAL_GPIO_TogglePin(LD1_GPIO_PORT, LD1_Pin);
- /* Insert delay 100 ms */
- HAL_Delay(100);
- HAL_GPIO_TogglePin(LD2_GPIO_PORT, LD2_PIN);
- /* Insert delay 100 ms */
- HAL_Delay(100);
- HAL_GPIO_TogglePin(LD3_GPIO_PORT, LD3_PIN);
- /* Insert delay 100 ms */
- HAL_Delay(100);
- HAL_GPIO_TogglePin(LD4_GPIO_PORT, LD4_PIN);
- /* Insert delay 100 ms */
- HAL_Delay(100);
- }
编译使用的是arm-none-eabi-gcc工具链：
- arm-none-eabi-size GPIO_IOToggle_Appli.elf
- arm-none-eabi-objdump -h -S GPIO_IOToggle_Appli.elf > "GPIO_IOToggle_Appli.list"
- text data bss dec hex filename
- 4644 12 1568 6224 1850 GPIO_IOToggle_Appli.elf
- Finished building: default.size.stdout
-
- Finished building: GPIO_IOToggle_Appli.list
-
- 21:33:09 Build Finished. 0 errors, 0 warnings. (took 6s.118ms)
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