Mirrors/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-10-02 11:10:54 +03:00
Code Issues Packages Projects Releases Wiki Activity

fix(adc): fix ESP32C6 ADC get high result after enable

Browse Source
This commit is contained in:
gaoxu
2026-02-03 16:39:44 +08:00
committed by Gao Xu
parent 96044a4442
commit e1922ac37d
2 changed files with 12 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/hal/esp32c6/include/hal/adc_ll.h
+8 -4
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -8,6 +8,7 @@
#include <stdbool.h>
#include <stdlib.h>
#include "esp_attr.h"
#include "esp_rom_sys.h"
#include "soc/adc_periph.h"
#include "soc/apb_saradc_struct.h"
@@ -797,7 +798,11 @@ static inline void adc_oneshot_ll_output_invert(adc_unit_t adc_n, bool inv_en)
static inline void adc_oneshot_ll_enable(adc_unit_t adc_n)
{
HAL_ASSERT(adc_n == ADC_UNIT_1);
APB_SARADC.saradc_onetime_sample.saradc_saradc1_onetime_sample = 1;
// For ESP32C6, it need to delay 50us after enable oneshot mode to ensure the ADC channel select is stable.
if (APB_SARADC.saradc_onetime_sample.saradc_saradc1_onetime_sample == 0) {
APB_SARADC.saradc_onetime_sample.saradc_saradc1_onetime_sample = 1;
esp_rom_delay_us(50);
}
}
/**
@@ -805,8 +810,7 @@ static inline void adc_oneshot_ll_enable(adc_unit_t adc_n)
*/
static inline void adc_oneshot_ll_disable_all_unit(void)
{
APB_SARADC.saradc_onetime_sample.saradc_saradc1_onetime_sample = 0;
APB_SARADC.saradc_onetime_sample.saradc_saradc2_onetime_sample = 0;
// For ESP32C6, we keep saradc_saradc1_onetime_sample as 1 when oneshot mode.
}
/**