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dts: esp32: full ledc configuration in binding

Browse source 
This commit moves the hardware configuration for ledc
peripheral to the device-tree instead of Kconfig.

Signed-off-by: Lucas Tamborrino <lucas.tamborrino@espressif.com>
This commit is contained in:
Lucas Tamborrino 2022-06-13 14:22:39 -03:00 committed by Fabio Baltieri
parent cb32d8e8e9
commit 02675bbc80
13 changed files with 228 additions and 614 deletions
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30
boards/xtensa/esp_wrover_kit/esp_wrover_kit-pinctrl.dtsi
View file

@ -67,4 +67,34 @@
output-high;
};
ledc0_ch0_gpio0: ledc0_ch0_gpio0 {
pinmux = <LEDC_CH0_GPIO0>;
output-enable;
};
ledc0_ch1_gpio2: ledc0_ch1_gpio2 {
pinmux = <LEDC_CH1_GPIO2>;
output-enable;
};
ledc0_ch2_gpio4: ledc0_ch2_gpio4 {
pinmux = <LEDC_CH2_GPIO4>;
output-enable;
};
ledc0_ch8_gpio0: ledc0_ch8_gpio0 {
pinmux = <LEDC_CH8_GPIO0>;
output-enable;
};
ledc0_ch9_gpio2: ledc0_ch9_gpio2 {
pinmux = <LEDC_CH9_GPIO2>;
output-enable;
};
ledc0_ch10_gpio4: ledc0_ch10_gpio4 {
pinmux = <LEDC_CH10_GPIO4>;
output-enable;
};
};

42
boards/xtensa/esp_wrover_kit/esp_wrover_kit.dts
View file

@ -16,6 +16,12 @@
led0 = &blue_led;
led1 = &green_led;
led2 = &red_led;
pwm-led0 = &pwm_led_red;
pwm-led1 = &pwm_led_green;
pwm-led2 = &pwm_led_blue;
red-pwm-led = &pwm_led_red;
green-pwm-led = &pwm_led_green;
blue-pwm-led = &pwm_led_blue;
uart-0 = &uart0;
i2c-0 = &i2c0;
};
@ -46,6 +52,22 @@
label = "Red - LED2";
};
};
pwmleds {
compatible = "pwm-leds";
pwm_led_red: pwm_led_0 {
label = "Red PWM LED";
pwms = <&ledc0 0 PWM_HZ(100) PWM_POLARITY_NORMAL>;
};
pwm_led_green: pwm_led_1 {
label = "Green PWM LED";
pwms = <&ledc0 1 PWM_HZ(100) PWM_POLARITY_NORMAL>;
};
pwm_led_blue: pwm_led_2 {
label = "Blue PWM LED";
pwms = <&ledc0 2 PWM_HZ(100) PWM_POLARITY_NORMAL>;
};
};
};
&cpu0 {
@ -111,6 +133,26 @@
};
};
&ledc0 {
pinctrl-0 = <&ledc0_ch0_gpio0 &ledc0_ch1_gpio2 &ledc0_ch2_gpio4>;
pinctrl-names = "default";
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
channel0@0 {
reg = <0x0>;
timer = <0>;
};
channel1@1 {
reg = <0x1>;
timer = <1>;
};
channel2@2 {
reg = <0x2>;
timer = <2>;
};
};
&timer0 {
status = "okay";
};

4
boards/xtensa/esp_wrover_kit/esp_wrover_kit_defconfig
View file

@ -23,3 +23,7 @@ CONFIG_GEN_IRQ_VECTOR_TABLE=n
CONFIG_I2C=y
CONFIG_CLOCK_CONTROL=y
CONFIG_LED=y
CONFIG_LED_PWM=y
CONFIG_PWM_LED_ESP32=y

548
drivers/pwm/Kconfig.esp32
View file

@ -3,554 +3,8 @@
# Copyright (c) 2017 Vitor Massaru Iha <vitor@massaru.org>
# SPDX-License-Identifier: Apache-2.0
menuconfig PWM_LED_ESP32
config PWM_LED_ESP32
bool "ESP32 PWM LED driver"
help
This option enables the PWM LED driver for ESP32 family of
processors. Say y if you wish to use PWM LED port on ESP32.
if PWM_LED_ESP32
config PWM_LED_ESP32_DEV_NAME_0
string "ESP32 PWM LED Name"
default "PWM_LED"
help
Specify the device name for the PWM driver.
menuconfig PWM_LED_ESP32_HS_CH
bool "Set high speed channels"
default y
if PWM_LED_ESP32_HS_CH
menuconfig PWM_LED_ESP32_HS_CH0
bool "Channel 0"
default y
if PWM_LED_ESP32_HS_CH0
config PWM_LED_ESP32_HS_CH0_GPIO
int "GPIO number"
default 13
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH0_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH0
menuconfig PWM_LED_ESP32_HS_CH1
bool "Channel 1"
default y
if PWM_LED_ESP32_HS_CH1
config PWM_LED_ESP32_HS_CH1_GPIO
int "GPIO number"
default 12
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH1_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH1
menuconfig PWM_LED_ESP32_HS_CH2
bool "Channel 2"
default y
if PWM_LED_ESP32_HS_CH2
config PWM_LED_ESP32_HS_CH2_GPIO
int "GPIO number"
default 14
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH2_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH2
menuconfig PWM_LED_ESP32_HS_CH3
bool "Channel 3"
default y
if PWM_LED_ESP32_HS_CH3
config PWM_LED_ESP32_HS_CH3_GPIO
int "GPIO number"
default 27
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH3_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH3
menuconfig PWM_LED_ESP32_HS_CH4
bool "Channel 4"
default y
if PWM_LED_ESP32_HS_CH4
config PWM_LED_ESP32_HS_CH4_GPIO
int "GPIO number"
default 26
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH4_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH4
menuconfig PWM_LED_ESP32_HS_CH5
bool "Channel 5"
default y
if PWM_LED_ESP32_HS_CH5
config PWM_LED_ESP32_HS_CH5_GPIO
int "GPIO number"
default 25
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH5_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH5
menuconfig PWM_LED_ESP32_HS_CH6
bool "Channel 6"
default y
if PWM_LED_ESP32_HS_CH6
config PWM_LED_ESP32_HS_CH6_GPIO
int "GPIO number"
default 33
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH6_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH6
menuconfig PWM_LED_ESP32_HS_CH7
bool "Channel 7"
default y
if PWM_LED_ESP32_HS_CH7
config PWM_LED_ESP32_HS_CH7_GPIO
int "GPIO number"
default 32
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_HS_CH7_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_HS_CH7
endif # PWM_LED_ESP32_HS_CH
menuconfig PWM_LED_ESP32_LS_CH
bool "Set low speed channels"
default y
if PWM_LED_ESP32_LS_CH
menuconfig PWM_LED_ESP32_LS_CH0
bool "Channel 0"
default y
if PWM_LED_ESP32_LS_CH0
config PWM_LED_ESP32_LS_CH0_GPIO
int "GPIO number"
default 6
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH0_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH0
menuconfig PWM_LED_ESP32_LS_CH1
bool "Channel 1"
default y
if PWM_LED_ESP32_LS_CH1
config PWM_LED_ESP32_LS_CH1_GPIO
int "GPIO number"
default 7
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH1_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH1
menuconfig PWM_LED_ESP32_LS_CH2
bool "Channel 2"
default y
if PWM_LED_ESP32_LS_CH2
config PWM_LED_ESP32_LS_CH2_GPIO
int "GPIO number"
default 8
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH2_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH2
menuconfig PWM_LED_ESP32_LS_CH3
bool "Channel 3"
default y
if PWM_LED_ESP32_LS_CH3
config PWM_LED_ESP32_LS_CH3_GPIO
int "GPIO number"
default 15
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH3_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH3
menuconfig PWM_LED_ESP32_LS_CH4
bool "Channel 4"
default y
if PWM_LED_ESP32_LS_CH4
config PWM_LED_ESP32_LS_CH4_GPIO
int "GPIO number"
default 16
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH4_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH4
menuconfig PWM_LED_ESP32_LS_CH5
bool "Channel 5"
default y
if PWM_LED_ESP32_LS_CH5
config PWM_LED_ESP32_LS_CH5_GPIO
int "GPIO number"
default 17
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH5_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH5
menuconfig PWM_LED_ESP32_LS_CH6
bool "Channel 6"
default y
if PWM_LED_ESP32_LS_CH6
config PWM_LED_ESP32_LS_CH6_GPIO
int "GPIO number"
default 19
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH6_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH6
menuconfig PWM_LED_ESP32_LS_CH7
bool "Channel 7"
default y
if PWM_LED_ESP32_LS_CH7
config PWM_LED_ESP32_LS_CH7_GPIO
int "GPIO number"
default 21
range 0 39
help
GPIO number, allowed values: 0 - 19, 21 - 23, 25 - 27 and 32 - 39.
config PWM_LED_ESP32_LS_CH7_TIMER
int "Set timer"
default 0
range 0 3
help
Timer source channel, allowed values: 0 - 4.
endif # PWM_LED_ESP32_LS_CH7
endif # PWM_LED_ESP32_LS_CH
menuconfig PWM_LED_ESP32_HS_TIMER
bool "Set high speed timers"
default y
if PWM_LED_ESP32_HS_TIMER
menuconfig PWM_LED_ESP32_HS_TIMER0
bool "Set timer 0"
default y
if PWM_LED_ESP32_HS_TIMER0
config PWM_LED_ESP32_HS_TIMER0_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_HS_TIMER0_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_HS_TIMER0
menuconfig PWM_LED_ESP32_HS_TIMER1
bool "Set timer 1"
default y
if PWM_LED_ESP32_HS_TIMER1
config PWM_LED_ESP32_HS_TIMER1_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_HS_TIMER1_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_HS_TIMER1
menuconfig PWM_LED_ESP32_HS_TIMER2
bool "Set timer 2"
default y
if PWM_LED_ESP32_HS_TIMER2
config PWM_LED_ESP32_HS_TIMER2_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_HS_TIMER2_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_HS_TIMER2
menuconfig PWM_LED_ESP32_HS_TIMER3
bool "Set timer 3"
default y
if PWM_LED_ESP32_HS_TIMER3
config PWM_LED_ESP32_HS_TIMER3_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_HS_TIMER3_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_HS_TIMER3
endif # PWM_LED_ESP32_HS_TIMER
menuconfig PWM_LED_ESP32_LS_TIMER
bool "Set low speed timers"
default y
if PWM_LED_ESP32_LS_TIMER
menuconfig PWM_LED_ESP32_LS_TIMER0
bool "Set timer 0"
default y
if PWM_LED_ESP32_LS_TIMER0
config PWM_LED_ESP32_LS_TIMER0_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_LS_TIMER0_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_LS_TIMER0
menuconfig PWM_LED_ESP32_LS_TIMER1
bool "Set timer 1"
default y
if PWM_LED_ESP32_LS_TIMER1
config PWM_LED_ESP32_LS_TIMER1_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_LS_TIMER1_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_LS_TIMER1
menuconfig PWM_LED_ESP32_LS_TIMER2
bool "Set timer 2"
default y
if PWM_LED_ESP32_LS_TIMER2
config PWM_LED_ESP32_LS_TIMER2_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_LS_TIMER2_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_LS_TIMER2
menuconfig PWM_LED_ESP32_LS_TIMER3
bool "Set timer 3"
default y
if PWM_LED_ESP32_LS_TIMER3
config PWM_LED_ESP32_LS_TIMER3_FREQ
int "Set frequency"
default 5000
config PWM_LED_ESP32_LS_TIMER3_BIT_NUM
int "Timer counter precision"
default 10
range 10 15
help
PWM timer precision, allowed values: 10 - 15.
endif # PWM_LED_ESP32_LS_TIMER3
endif # PWM_LED_ESP32_LS_TIMER
endif # PWM_LED_ESP32

114
dts/bindings/pwm/espressif,esp32-ledc.yaml
View file

@ -1,15 +1,117 @@
description: ESP32 LEDC
# Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
# SPDX-License-Identifier: Apache-2.0
description: |
Espressif's LEDC controller Node
The LEDC controller is primarily designed to control the intensity of LEDs, although it can be used to generate
PWM signals for other purposes as well.
The mapping between the channel and GPIO is done through pinctrl
&ledc0 {
pinctrl-0 = <&ledc0_ch0_gpio0>;
pinctrl-names = "default";
}
The 'ledc0_ch0_gpio0' node is defined in <board>-pinctrl.dtsi.
ledc0_ch0_gpio0: ledc0_ch0_gpio0 {
pinmux = <LEDC_CH0_GPIO0>;
output-enable;
};
If another mapping is desired, just check if the <board>-pinctrl.dtsi already have it defined, or feel free to include a new node.
The 'pinmux' property uses a macro defined in https://github.com/zephyrproject-rtos/hal_espressif/tree/zephyr/include/dt-bindings/pinctrl
Before including a new node, check if the desired mapping is available according to the SoC.
It is possible to include multiple channel's mapping in the 'pinmux' property:
&ledc0 {
pinctrl-0 = <&ledc0_ch0_gpio0 &ledc0_ch9_gpio2 &ledc0_ch10_gpio4>;
pinctrl-names = "default";
}
Use the child bindings to configure the desired channel:
&ledc0 {
pinctrl-0 = <&ledc0_ch0_gpio0 &ledc0_ch9_gpio2 &ledc0_ch10_gpio4>;
pinctrl-names = "default";
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
channel0@0 {
reg = <0x0>;
timer = <0>;
};
channel9@9 {
reg = <0x9>;
timer = <0>;
};
channel10@a {
reg = <0xa>;
timer = <1>;
};
};
Note: The channel's 'reg' property defines the ID of the channel. It must match the channel used in the 'pinmux'.
compatible: "espressif,esp32-ledc"
include: [pwm-controller.yaml, base.yaml]
include: [pwm-controller.yaml, pinctrl-device.yaml, base.yaml]
properties:
label:
required: true
label:
required: true
"#pwm-cells":
const: 3
"#pwm-cells":
const: 3
child-binding:
description: Channel configuration.
properties:
reg:
type: int
required: true
enum:
- 0
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
description: |
The esp32 has 8 low speed channel and 8 high speed channels.
The low speed channel are mapped from channel 0 to 7, and the high speed are mapped from channel 8 to 15.
High speed channels are only available in the esp32 SoC. Esp32s2 has only 8 available channels, and esp32c3
has 6. In these SoCs there is no differentiation between low or high speed.
timer:
type: int
required: true
enum:
- 0
- 1
- 2
- 3
description: |
Timer selection.
For maximum flexibility, the high-speed as well as the low-speed channels can be driven from one of four high-speed/low-speed timers.
pwm-cells:
- channel

10
dts/riscv/espressif/esp32c3.dtsi
View file

@ -134,6 +134,16 @@
current-speed = <115200>;
};
ledc0: ledc@60019000 {
compatible = "espressif,esp32-ledc";
pwm-controller;
#pwm-cells = <3>;
reg = <0x60019000 0x1000>;
label = "LEDC_0";
clocks = <&rtc ESP32_LEDC_MODULE>;
status = "disabled";
};
timer0: counter@6001f000 {
compatible = "espressif,esp32-timer";
reg = <0x6001F000 DT_SIZE_K(4)>;

3
dts/xtensa/espressif/esp32.dtsi
View file

@ -10,6 +10,7 @@
#include <zephyr/dt-bindings/clock/esp32_clock.h>
#include <zephyr/dt-bindings/interrupt-controller/esp-xtensa-intmux.h>
#include <dt-bindings/pinctrl/esp32-pinctrl.h>
#include <zephyr/dt-bindings/pwm/pwm.h>
/ {
chosen {
@ -135,10 +136,10 @@
ledc0: ledc@3ff59000 {
compatible = "espressif,esp32-ledc";
pwm-controller;
#pwm-cells = <3>;
reg = <0x3ff59000 0x800>;
label = "LEDC_0";
clocks = <&rtc ESP32_LEDC_MODULE>;
status = "disabled";
};

10
dts/xtensa/espressif/esp32s2.dtsi
View file

@ -108,6 +108,16 @@
current-speed = <115200>;
};
ledc0: ledc@3f419000 {
compatible = "espressif,esp32-ledc";
pwm-controller;
#pwm-cells = <3>;
reg = <0x3f419000 0x1000>;
label = "LEDC_0";
clocks = <&rtc ESP32_LEDC_MODULE>;
status = "disabled";
};
gpio0: gpio@3f404000 {
compatible = "espressif,esp32-gpio";
gpio-controller;

25
samples/basic/blinky_pwm/boards/esp32.overlay
View file

@ -2,9 +2,11 @@
* SPDX-License-Identifier: Apache-2.0
*
* Copyright (c) 2021 Andrei-Edward Popa
* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
*/
#include <zephyr/dt-bindings/pwm/pwm.h>
#include <dt-bindings/pinctrl/esp32-pinctrl.h>
/ {
aliases {
@ -15,12 +17,27 @@
pwmleds {
compatible = "pwm-leds";
pwm_led_blue: pwm_led_gpio0_2 {
label = "PWM LED0";
pwms = <&ledc0 2 1000 PWM_POLARITY_NORMAL>;
label = "PWM LED0";
pwms = <&ledc0 0 1000 PWM_POLARITY_NORMAL>;
};
};
};
&ledc0 {
status = "okay";
&pinctrl {
ledc0_ch0_gpio2: ledc0_ch0_gpio2 {
pinmux = <LEDC_CH0_GPIO2>;
output-enable;
};
};
&ledc0 {
pinctrl-0 = <&ledc0_ch0_gpio2>;
pinctrl-names = "default";
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
channel0@0 {
reg = <0x0>;
timer = <0>;
};
};

3
samples/basic/blinky_pwm/boards/esp_wrover_kit.conf
View file

@ -1,3 +0,0 @@
CONFIG_LED=y
CONFIG_LED_PWM=y
CONFIG_PWM_LED_ESP32=y

26
samples/basic/blinky_pwm/boards/esp_wrover_kit.overlay
View file

@ -1,26 +0,0 @@
/*
* Copyright (c) 2021 Espressif Systems (Shanghai) Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/dt-bindings/pwm/pwm.h>
/ {
aliases {
pwm-0 = &ledc0;
pwm-led0 = &pwm_led_blue;
};
pwmleds {
compatible = "pwm-leds";
pwm_led_blue: pwm_led_gpio0_2 {
label = "PWM LED0";
pwms = <&ledc0 2 1000 PWM_POLARITY_NORMAL>;
};
};
};
&ledc0 {
status = "okay";
};

1
samples/drivers/led_pwm/boards/esp32.conf
View file

@ -1 +0,0 @@
CONFIG_PWM_LED_ESP32=y

26
samples/drivers/led_pwm/boards/esp32.overlay
View file

@ -1,26 +0,0 @@
/*
* SPDX-License-Identifier: Apache-2.0
*
* Copyright (c) 2021 Andrei-Edward Popa
*/
#include <zephyr/dt-bindings/pwm/pwm.h>
/ {
aliases {
pwm-0 = &ledc0;
pwm-led0 = &pwm_led_blue;
};
pwmleds {
compatible = "pwm-leds";
pwm_led_blue: pwm_led_gpio0_2 {
label = "PWM LED0";
pwms = <&ledc0 2 1000 PWM_POLARITY_NORMAL>;
};
};
};
&ledc0 {
status = "okay";
};