[bsp][stm32u575] add ADC support

Author: zst123

bsp/stm32/libraries/HAL_Drivers/drv_adc.c

@@ -155,7 +155,7 @@ static rt_err_t stm32_adc_enabled(struct rt_adc_device *device, rt_int8_t channe
             return -RT_EINVAL;
         }
 
-#if defined(SOC_SERIES_STM32MP1) || defined (SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB)
+#if defined(SOC_SERIES_STM32MP1) || defined (SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB) || defined(SOC_SERIES_STM32U5)
         ADC_ChanConf.Rank = ADC_REGULAR_RANK_1;
 #else
         ADC_ChanConf.Rank = 1;
@@ -173,6 +173,8 @@ static rt_err_t stm32_adc_enabled(struct rt_adc_device *device, rt_int8_t channe
         ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
 #elif defined(SOC_SERIES_STM32H7)
         ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
+#elif defined(SOC_SERIES_STM32U5)
+        ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_814CYCLES;
     #elif defined (SOC_SERIES_STM32WB)
         ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
 #endif
@@ -184,11 +186,18 @@ static rt_err_t stm32_adc_enabled(struct rt_adc_device *device, rt_int8_t channe
 #if defined(SOC_SERIES_STM32L4)
         ADC_ChanConf.OffsetNumber = ADC_OFFSET_NONE;
         ADC_ChanConf.SingleDiff = LL_ADC_SINGLE_ENDED;
-#elif defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB)
+#elif defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB) || defined(SOC_SERIES_STM32U5)
         ADC_ChanConf.OffsetNumber = ADC_OFFSET_NONE;  /* ADC channel affected to offset number */
         ADC_ChanConf.Offset       = 0;
         ADC_ChanConf.SingleDiff   = ADC_SINGLE_ENDED; /* ADC channel differential mode */
 #endif
+
+    /* enable the analog power domain before configuring channel */
+#if defined(SOC_SERIES_STM32U5)
+        __HAL_RCC_PWR_CLK_ENABLE();
+        HAL_PWREx_EnableVddA();
+#endif /* defined(SOC_SERIES_STM32U5) */
+
     if(HAL_ADC_ConfigChannel(stm32_adc_handler, &ADC_ChanConf) != HAL_OK)
     {
         LOG_E("Failed to configure ADC channel %d", channel);
@@ -201,7 +210,7 @@ static rt_err_t stm32_adc_enabled(struct rt_adc_device *device, rt_int8_t channe
             LOG_E("ADC calibration error!\n");
             return -RT_ERROR;
         }
-#elif defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7)
+#elif defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32U5)
         /* Run the ADC linear calibration in single-ended mode */
         if (HAL_ADCEx_Calibration_Start(stm32_adc_handler, ADC_CALIB_OFFSET_LINEARITY, ADC_ChanConf.SingleDiff) != HAL_OK)
         {
@@ -234,19 +243,21 @@ static rt_uint8_t stm32_adc_get_resolution(struct rt_adc_device *device)
 #ifdef SOC_SERIES_STM32H7
         case ADC_RESOLUTION_16B:
             return 16;
+#endif /* SOC_SERIES_STM32H7 */
+#if defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32U5)
         case ADC_RESOLUTION_14B:
             return 14;
-#endif /* SOC_SERIES_STM32H7 */
+#endif /* defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32U5) */
         case ADC_RESOLUTION_12B:
             return 12;
         case ADC_RESOLUTION_10B:
             return 10;
         case ADC_RESOLUTION_8B:
             return 8;
-#ifndef SOC_SERIES_STM32H7
+#if defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32U5)
         case ADC_RESOLUTION_6B:
             return 6;
-#endif /* SOC_SERIES_STM32H7 */
+#endif /* defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32U5) */
         default:
             return 0;
     }