From 63659e5463d188bf839b42e8cd2234c4fc9d2ed8 Mon Sep 17 00:00:00 2001
From: jizai945 <40849861+jizai945@users.noreply.github.com>
Date: Sat, 25 Jul 2020 16:52:16 +0800
Subject: [PATCH] Update drv_adc.c
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发现AD读取的数据不准，是因为没有在ADC初始化之后进行校准
---
 bsp/stm32/libraries/HAL_Drivers/drv_adc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_adc.c b/bsp/stm32/libraries/HAL_Drivers/drv_adc.c
index 030002dbe24..b2e6dd842e4 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_adc.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_adc.c
@@ -285,6 +285,9 @@ static int stm32_adc_init(void)
         }
         else
         {
+            /* calibration */
+            HAL_ADCEx_Calibration_Start(&&stm32_adc_obj[i].ADC_Handler);
+            
             /* register ADC device */
             if (rt_hw_adc_register(&stm32_adc_obj[i].stm32_adc_device, name_buf, &stm_adc_ops, &stm32_adc_obj[i].ADC_Handler) == RT_EOK)
             {