DMA、定时器都是在cubemx下配置的，主要几行代码如下 “ MX_GPIO_Init(); MX_DMA_Init(); MX_TIM3_Init(); MX_TIM4_Init(); / USER CODE BEGIN 2 / for(int i=0;i<5;i++) { pwm_buffer=100(i+1); pwm_buffer2=100(i+1); } pwm_buffer[4]=0; pwm_buffer2[4]=0; pwm_buffer[0]=999; uint32_t aSRC_Buffer[30] = { 99, 0x0000, 50, 199, 0x0000, 100, 299, 0x0000, 150, 399, 0x0000, 200, 499, 0x0000, 250, 599, 0x0000, 300, 699, 0x0000, 350, 799, 0x0000, 400, 899, 0x0000, 450, 999, 0x0000, 500 }; HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1) ; HAL_TIM_DMABurst_WriteStart(&htim3, TIM_DMABASE_CCR1, TIM_DMA_UPDATE,(uint32_t*)pwm_buffer, TIM_DMABURSTLENGTH_1TRANSFER); ”
