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68 lines
1.4 KiB
68 lines
1.4 KiB
### CubeMX HAL
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-------------
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#### 开始项目
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##### 1、 选择芯片类型
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stm32F103ZET6 stm32F407ZGT6
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### 2、 sys
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定时器： Systick Tim
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一般sysstick用于OS
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##### 3、 RCC
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默认内部时钟，大多情况下配置为外部时钟，并设置频率
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```C
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__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
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{
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/* Configure the SysTick to have interrupt in 1ms time basis*/
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if (HAL_SYSTICK_Config(SystemCoreClock / (1000U / uwTickFreq)) > 0U)
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{
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return HAL_ERROR;
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}
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```
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1000U 1ms 中断
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500U 2ms 中断
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修改中断函数 Core\Src\stm32f1xx_it.c
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定义累加值
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uint16_t systime；
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```C
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void SysTick_Handler(void)
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{
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/* USER CODE BEGIN SysTick_IRQn 0 */
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systime++;
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if (systime>1000)
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{
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HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_5);
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systime=0;
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}
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/* USER CODE END SysTick_IRQn 0 */
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HAL_IncTick();
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/* USER CODE BEGIN SysTick_IRQn 1 */
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HAL_SYSTICK_IRQHandler();
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/* USER CODE END SysTick_IRQn 1 */
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}
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```
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以上程序可以烧录， 或通过定时器实现
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设置定时器：
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时钟还是8MHz,经过8分频后变成1MHz,即1微妙，然后累加值设置为500，则500微妙TIM3定时器将溢出执行一次中断，接下来我们先去使能TIM3溢出中断
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Core\Src\stm32f1xx_it.c TIM3_IRQHandle()
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然后打开定时器中断
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##### 4、 GPIO
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HAL_GPIO_TogglePin
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##### 5、 UART
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##### 6、 makefile
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arm-none-eabi-gcc -v
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