支持f

DRV/drv_adc.c

@@ -15,6 +15,24 @@ void DMA1_Channel1_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast
 uint32_t adc_raw[4] = {0};
 
 
+void adc_covert(uint32_t *data)
+{
+    float Vref = 0;
+    float Vin = 0;
+    float V3 = 0;
+    float Bat = 0;
+
+    Vref = data[0] / 4096.0 * 3.3;//2.5V参考电压
+    Vin = data[1] / 4096.0 * 3.3 * 2.0;
+    V3  = data[2] / 4096.0 * 3.3 * 2.0;
+    Bat = data[3] / 4096.0 * 3.3 * 11.0;
+
+
+    printf("adc-f:  %4.2f,  %4.2f,  %4.2f,  %4.2f\n", Vref,Vin,V3,Bat);
+}
+
+
+
 void adc_init(void)
 {
     NVIC_InitTypeDef NVIC_InitStructure = {0};
@@ -34,7 +52,7 @@ void adc_init(void)
     DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->RDATAR;//ADC地址
     DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adc_raw; //内存地址
     DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //方向(从外设到内存)
-    DMA_InitStructure.DMA_BufferSize = sizeof(adc_raw); //传输内容的大小
+    DMA_InitStructure.DMA_BufferSize = 4; //传输内容的大小
     DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址固定
     DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址增加
     DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word ; //外设数据单位
@@ -117,16 +135,23 @@ void DMA1_Channel1_IRQHandler(void)
 
     if(DMA_GetFlagStatus(DMA1_IT_TC1))
     {
-        printf("adc-dma:  %4d,  %4d,  %4d,  %4d\n", adc_raw[0],adc_raw[1],adc_raw[2],adc_raw[3]);
-
         /* 失能DMA1通道1，以防在中断过程中发生DMA传输 */
         DMA_Cmd(DMA1_Channel1, DISABLE);
+
+
+        //printf("adc-dma:  %4d,  %4d,  %4d,  %4d\n", adc_raw[0],adc_raw[1],adc_raw[2],adc_raw[3]);
+        adc_covert(adc_raw);
+
+
         /* 如果DMA设置的是normal模式，需要手动重装计数器 */
         DMA1_Channel1->CNTR = 4;
         /* 清除中断标志位 */
         DMA_ClearITPendingBit(DMA1_IT_TC1);
         // DMA_ClearFlag(DMA1_FLAG_TC1);
         /* 重新使能DMA1通道1，开始工作 */
+
+
+
         DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
         DMA_Cmd(DMA1_Channel1,ENABLE);
     }