x网站免费,四川展陈公司排名前十,网站建设报价方案下载,上海物流网站建设【stm32】DAC输出三角波锯齿波及任意波形
导入DAC.ioc#xff08;见上节DAC学习笔记#xff09;
DAC输出三角波
CubeMX图形化配置
DAC配置 实现0.1ms定时周期 时钟树配置
程序编写
/* USER CODE BEGIN Includes */
#include lcd.h
/* USER CODE END Inc…【stm32】DAC输出三角波锯齿波及任意波形
导入DAC.ioc见上节DAC学习笔记
DAC输出三角波
CubeMX图形化配置
DAC配置 实现0.1ms定时周期 时钟树配置
程序编写
/* USER CODE BEGIN Includes */
#include lcd.h
/* USER CODE END Includes *//* USER CODE BEGIN 2 */lcd_init();lcd_show_str(10, 10, 24, Demo15_2: DAC1 triggered by TIM6, RED);lcd_show_str(10, 40, 24, Triangular wave on PA4, RED);lcd_show_str(10, 70, 24, Waves interval is 819ms, RED);HAL_DAC_Start(hdac, DAC_CHANNEL_1);uint32_t DCValue 0;HAL_DAC_SetValue(hdac, DAC_CHANNEL_1, DAC_ALIGN_12B_R, DCValue);HAL_TIM_Base_Start(htim6);/* USER CODE END 2 */实现效果
采用CubeMonitor监测生成波形 也可用示波器检测波形生成结果
生成噪声波
在此处更改配置
生成锯齿波任意波形
使用DMA触发任意波形 若要调整锯齿波的周期修改TIM6的分频系数和计数周期即可
程序编写
/* USER CODE BEGIN Includes */
#include lcd.h
#include keyled.h
/* USER CODE END Includes *//* USER CODE BEGIN 2 */lcd_init();lcd_show_str(10, 10, 24, Demo15_3: DAC output with DMA, RED);lcd_show_str(10, 40, 24, Sawtooth wave on PA4, RED);lcd_show_str(10, 70, 24, Waves interval is 100ms, RED);uint32_t userWave[1000];userWave[0] 0;for (uint16_t i 1; i 1000; i) {userWave[i] userWave[i - 1] 4;}HAL_DAC_Start_DMA(hdac, DAC_CHANNEL_1, userWave, 1000, DAC_ALIGN_12B_R);HAL_TIM_Base_Start(htim6);/* USER CODE END 2 */重写回调函数
/* USER CODE BEGIN 4 */
void HAL_DAC_ConvCpltCallbackCh1(DAC_HandleTypeDef *hdac) {LED0_Toggle();
}
/* USER CODE END 4 */
