- /*
- * PA0 -> ADC_IN0
- * PA1 -> ADC_IN1
- * PA2 -> ADC_IN2
- * PA3 -> ADC_IN3
- * PA4 -> ADC_IN4
- * PA5 -> ADC_IN5
- * PA6 -> ADC_IN6
- * PA7 -> ADC_IN7
- * PB0 -> ADC_IN8
- * PB1 -> ADC_IN9
- * PC0 -> ADC_IN10
- * PC1 -> ADC_IN11
- * PC2 -> ADC_IN12
- * PC3 -> ADC_IN13
- * PC4 -> ADC_IN14
- * PC5 -> ADC_IN15
- */
- typedef struct {
- GPIO_T *port;
- uint16_t pin;
- uint32_t AHBPeriph;
- uint32_t adc_channel;
- } adc_ch_info_t;
- /* ADC信息 */
- static adc_ch_info_t adc_ch_info[] = {
- {GPIOA, GPIO_PIN_0, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_0 },
- {GPIOA, GPIO_PIN_1, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_1 },
- {GPIOA, GPIO_PIN_2, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_2 },
- {GPIOA, GPIO_PIN_3, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_3 },
- {GPIOA, GPIO_PIN_4, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_4 },
- {GPIOA, GPIO_PIN_5, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_5 },
- {GPIOA, GPIO_PIN_6, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_6 },
- {GPIOA, GPIO_PIN_7, RCM_AHB_PERIPH_GPIOA, ADC_CHANNEL_7 },
- {GPIOB, GPIO_PIN_0, RCM_AHB_PERIPH_GPIOB, ADC_CHANNEL_8 },
- {GPIOB, GPIO_PIN_1, RCM_AHB_PERIPH_GPIOB, ADC_CHANNEL_9 },
- {GPIOC, GPIO_PIN_0, RCM_AHB_PERIPH_GPIOC, ADC_CHANNEL_10 },
- {GPIOC, GPIO_PIN_1, RCM_AHB_PERIPH_GPIOC, ADC_CHANNEL_11 },
- {GPIOC, GPIO_PIN_2, RCM_AHB_PERIPH_GPIOC, ADC_CHANNEL_12 },
- {GPIOC, GPIO_PIN_3, RCM_AHB_PERIPH_GPIOC, ADC_CHANNEL_13 },
- {GPIOC, GPIO_PIN_4, RCM_AHB_PERIPH_GPIOC, ADC_CHANNEL_14 },
- {GPIOC, GPIO_PIN_5, RCM_AHB_PERIPH_GPIOC, ADC_CHANNEL_15 },
- {NULL, 0, 0, ADC_CHANNEL_16 },
- {NULL, 0, 0, ADC_CHANNEL_17 },
- };
- /*
- * [url=/u/brief]@brief[/url] 引脚初始化
- *
- * @param None
- *
- * @retval None
- *
- */
- void bsp_adc_gpio_init(void)
- {
- GPIO_Config_T gpioConfig;
- uint8_t ch = 0;
-
- for (ch = 0; ch < (sizeof(adc_ch_info) / sizeof(adc_ch_info[0])); ch++) {
- RCM_EnableAHBPeriphClock(adc_ch_info[ch].AHBPeriph);
- GPIO_ConfigStructInit(&gpioConfig);
- gpioConfig.pin = adc_ch_info[ch].pin;
- gpioConfig.mode = GPIO_MODE_AN;
- gpioConfig.outtype = GPIO_OUT_TYPE_PP;
- gpioConfig.speed = GPIO_SPEED_50MHz;
- gpioConfig.pupd = GPIO_PUPD_NO;
- GPIO_Config(adc_ch_info[ch].port, &gpioConfig);
- }
- }
- /*
- * @brief ADC初始化
- *
- * @param membuf: 存储地址
- *
- * @retval None
- *
- */
- void bsp_adc_init(uint16_t *membuf)
- {
- ADC_Config_T adcConfig;
- DMA_Config_T dmaConfig;
-
- uint32_t ch = ADC_CHANNEL_0 | ADC_CHANNEL_1 | ADC_CHANNEL_2 | ADC_CHANNEL_3 | ADC_CHANNEL_4 | \
- ADC_CHANNEL_5 | ADC_CHANNEL_6 | ADC_CHANNEL_7 | ADC_CHANNEL_8 | ADC_CHANNEL_9 | \
- ADC_CHANNEL_10 | ADC_CHANNEL_11 | ADC_CHANNEL_12 | ADC_CHANNEL_13 | ADC_CHANNEL_14 | \
- ADC_CHANNEL_15 | ADC_CHANNEL_16 | ADC_CHANNEL_17;
-
- RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_ADC1);
- RCM_EnableAHBPeriphClock(RCM_AHB_PERIPH_DMA1);
-
- /* DMA配置 */
- DMA_ConfigStructInit(&dmaConfig);
- dmaConfig.direction = DMA_DIR_PERIPHERAL;
- dmaConfig.circular = DMA_CIRCULAR_DISABLE;
- dmaConfig.memoryTomemory = DMA_M2M_DISABLE;
- dmaConfig.priority = DMA_PRIORITY_LEVEL_LOW;
- dmaConfig.memoryInc = DMA_MEMORY_INC_ENABLE;
- dmaConfig.peripheralInc = DMA_PERIPHERAL_INC_DISABLE;
- dmaConfig.memoryDataSize = DMA_MEMORY_DATASIZE_HALFWORD;
- dmaConfig.peripheralDataSize = DMA_PERIPHERAL_DATASIZE_HALFWORD;
- dmaConfig.bufferSize = ADC_CH_NUM;
- dmaConfig.memoryAddress = (uint32_t)membuf;
- dmaConfig.peripheralAddress = (uint32_t)&ADC->DATA;
- DMA_Config(DMA1_CHANNEL_1, &dmaConfig);
- DMA_Enable(DMA1_CHANNEL_1);
-
- /* ADC Configuration */
- ADC_Reset();
- ADC_ConfigStructInit(&adcConfig);
- /* Set resolution*/
- adcConfig.resolution = ADC_RESOLUTION_12B;
- /* Set dataAlign*/
- adcConfig.dataAlign = ADC_DATA_ALIGN_RIGHT;
- /* Set scanDir*/
- adcConfig.scanDir = ADC_SCAN_DIR_UPWARD;
- /* Set single */
- adcConfig.convMode = ADC_CONVERSION_SINGLE;
- /* Set extTrigConv*/
- adcConfig.extTrigConv = ADC_EXT_TRIG_CONV_TRG0;
- /* Set TrigEdge*/
- adcConfig.extTrigEdge = ADC_EXT_TRIG_EDGE_NONE;
- ADC_Config(&adcConfig);
- ADC_EnableTempSensor();
- ADC_EnableVrefint();
- ADC_ConfigChannel(ch, ADC_SAMPLE_TIME_41_5);
- /* Calibration*/
- ADC_ReadCalibrationFactor();
- /* Enable ADC*/
- ADC_Enable();
- ADC_EnableDMA();
- }
- /*
- * @brief ADC启动
- *
- * @param None
- *
- * @retval None
- *
- */
- void bsp_adc_start(void)
- {
- DMA_Disable(DMA1_CHANNEL_1);
- DMA_SetDataNumber(DMA1_CHANNEL_1, ADC_CH_NUM);
- DMA_Enable(DMA1_CHANNEL_1);
- /* Wait until ADC is ready */
- while (!ADC_ReadStatusFlag(ADC_FLAG_ADRDY));
- ADC_StartConversion();
- }
- /*
- * @brief ADC停止
- *
- * @param None
- *
- * @retval None
- *
- */
- void bsp_adc_stop(void)
- {
- ADC_StopConversion();
- }
- /*
- * @brief ADC完成
- *
- * @param None
- *
- * @retval 完成结果
- *
- */
- uint8_t bsp_adc_complete(void)
- {
- uint8_t ret = 0;
-
- if (DMA_ReadStatusFlag(DMA1_FLAG_TF1) != RESET) {
- DMA_ClearStatusFlag(DMA1_FLAG_TF1);
- ret = 1;
- }
-
- return ret;
- }
- enum ADC_CH {
- ADC_CH0,
- ADC_CH1,
- ADC_CH2,
- ADC_CH3,
- ADC_CH4,
- ADC_CH5,
- ADC_CH6,
- ADC_CH7,
- ADC_CH8,
- ADC_CH9,
- ADC_CH10,
- ADC_CH11,
- ADC_CH12,
- ADC_CH13,
- ADC_CH14,
- ADC_CH15,
- ADC_CH16,
- ADC_CH17,
-
- ADC_CH_NUM
- };
测试代码如下：
- uint16_t adc_ch_value[ADC_CH_NUM];
- float adc_ch_voltage[ADC_CH_NUM];
- // 应用初始化
- void app_init(void)
- {
- bsp_adc_gpio_init();
- bsp_adc_init(adc_ch_value);
- bsp_adc_start();
- }
- // 应用任务
- void app_task(void)
- {
- if (bsp_adc_complete() != 0) {
- for (uint8_t i = 0; i < ADC_CH_NUM; i++) {
- adc_ch_voltage[i] = ((float)adc_ch_value[i]) / 4095 * 3.3f;
- }
- bsp_adc_start();
- }
- }
详细代码，请查看附件！
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