From 365cc0c1c88d0a0d28abe67c6d2fb4ee74d9dfdd Mon Sep 17 00:00:00 2001
From: fuzhibo <fuzhibo@espressif.com>
Date: Sun, 27 Sep 2020 17:13:57 +0800
Subject: [PATCH] bugfix(adc): add io init in adc dma driver for esp32

---
 components/driver/adc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/driver/adc.c b/components/driver/adc.c
index 76d26e7392..78b5561696 100644
--- a/components/driver/adc.c
+++ b/components/driver/adc.c
@@ -231,7 +231,7 @@ esp_err_t adc_i2s_mode_init(adc_unit_t adc_unit, adc_channel_t channel)
         dig_cfg.adc2_pattern_len = 1;
         dig_cfg.adc2_pattern = adc2_pattern;
     }
-
+    adc_gpio_init(adc_unit, channel);
     ADC_ENTER_CRITICAL();
     adc_hal_init();
     adc_hal_dig_controller_config(&dig_cfg);