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soc: esp32s3: add ADC single-shot support

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Add support for single-shot ADC readings.

Signed-off-by: Eric Holmberg <eric.holmberg@northriversystems.co.nz>
This commit is contained in:
Eric Holmberg 2023-07-16 22:22:29 +12:00 committed by Carles Cufí
parent 38203f9cb0
commit 9452cbfe9d
3 changed files with 25 additions and 0 deletions
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5
drivers/adc/adc_esp32.c
View file

@ -41,6 +41,11 @@ LOG_MODULE_REGISTER(adc_esp32, CONFIG_ADC_LOG_LEVEL);
#define ADC_RESOLUTION_MIN SOC_ADC_DIGI_MAX_BITWIDTH
#define ADC_RESOLUTION_MAX SOC_ADC_DIGI_MAX_BITWIDTH
#elif CONFIG_SOC_SERIES_ESP32S3
#define ADC_CALI_SCHEME ESP_ADC_CAL_VAL_EFUSE_TP_FIT
#define ADC_RESOLUTION_MIN SOC_ADC_DIGI_MIN_BITWIDTH
#define ADC_RESOLUTION_MAX SOC_ADC_DIGI_MAX_BITWIDTH
#endif
/* Convert resolution in bits to esp32 enum values */

1
dts/bindings/adc/espressif,esp32-adc.yaml
View file

@ -8,6 +8,7 @@ description: |
- ESP32 < 9,10,11,12 >
- ESP32-S2 < 12 >
- ESP32-C3 < 12 >
- ESP32-S3 < 12 >
For chips with configurable resolution feature (ESP32),
maximum resolution will be used if not set explicitly.

19
dts/xtensa/espressif/esp32s3/esp32s3_common.dtsi
View file

@ -5,6 +5,7 @@
*/
#include <mem.h>
#include <xtensa/xtensa.dtsi>
#include <zephyr/dt-bindings/adc/adc.h>
#include <zephyr/dt-bindings/gpio/gpio.h>
#include <zephyr/dt-bindings/i2c/i2c.h>
#include <zephyr/dt-bindings/clock/esp32s3_clock.h>
@ -216,6 +217,24 @@
status = "disabled";
};
adc0: adc@60040000 {
compatible = "espressif,esp32-adc";
reg = <0x60040000 4>;
unit = <1>;
channel-count = <10>;
#io-channel-cells = <1>;
status = "disabled";
};
adc1: adc@60040004 {
compatible = "espressif,esp32-adc";
reg = <0x60040004 4>;
unit = <2>;
channel-count = <10>;
#io-channel-cells = <1>;
status = "disabled";
};
twai: can@6002b000 {
compatible = "espressif,esp32-twai";
reg = <0x6002b000 DT_SIZE_K(4)>;