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soburiDhruvaG2000
soburi
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DhruvaG2000
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zephyrCommon: Implement analogWrite()
The 'pwms' node under the 'zephyr,user' defines available PWM channels. The 'pwm-pins' defines the mapping of PWM channels to pin numbers. API looks up the 'pwm-pins' when querying the PWM channel by digital pin number. So it should be in the same order as 'pwms' node. PWM channels should configure and tied to the output pins. The period property of the PWM channel is used as resolution as PWM. For original Arduino API compatibility, it should be 255. The period property and API argument determines the duty ratio. Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@fujitsu.com>
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‎cores/arduino/Arduino.h‎

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@@ -7,6 +7,7 @@
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#include "api/ArduinoAPI.h"
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/drivers/pwm.h>
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#include <zephyr/kernel.h>
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#include <variants.h>

‎cores/arduino/zephyrCommon.cpp‎

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@@ -6,6 +6,33 @@
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#include <Arduino.h>
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#define PWM_DT_SPEC(n,p,i) PWM_DT_SPEC_GET_BY_IDX(n, i),
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#define PWM_PINS(n,p,i) DT_PROP_BY_IDX(n, p, i),
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namespace {
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#ifdef CONFIG_PWM
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const struct pwm_dt_spec arduino_pwm[] =
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{ DT_FOREACH_PROP_ELEM(DT_PATH(zephyr_user), pwms, PWM_DT_SPEC) };
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/* pwm-pins node provides a mapping digital pin numbers to pwm channels */
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const pin_size_t arduino_pwm_pins[] =
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{ DT_FOREACH_PROP_ELEM(DT_PATH(zephyr_user), pwm_pins, PWM_PINS) };
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size_t pwm_pin_index(pin_size_t pinNumber) {
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for(size_t i=0; i<ARRAY_SIZE(arduino_pwm_pins); i++) {
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if (arduino_pwm_pins[i] == pinNumber) {
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return i;
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}
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}
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return (size_t)-1;
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}
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#endif //CONFIG_PWM
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}
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void yield(void) {
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k_yield();
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}
@@ -49,3 +76,28 @@ unsigned long micros(void) {
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unsigned long millis(void) { return k_uptime_get_32(); }
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#ifdef CONFIG_PWM
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void analogWrite(pin_size_t pinNumber, int value)
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{
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size_t idx = pwm_pin_index(pinNumber);
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if (idx >= ARRAY_SIZE(arduino_pwm) ) {
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return;
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}
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if (((uint32_t)value) > arduino_pwm[idx].period) {
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value = arduino_pwm[idx].period;
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} else if (value < 0) {
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value = 0;
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}
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/*
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* A duty ratio determines by the period value defined in dts
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* and the value arguments. So usually the period value sets as 255.
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*/
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(void)pwm_set_cycles(arduino_pwm[idx].dev, arduino_pwm[idx].channel,
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arduino_pwm[idx].period, value, arduino_pwm[idx].flags);
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}
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#endif

‎variants/arduino_mkrzero/arduino_mkrzero.overlay‎

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@@ -27,5 +27,27 @@
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d19_gpios = <&arduino_mkr_header 19 0>; /* D19 / A5 / I2C-SCL */
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d20_gpios = <&arduino_mkr_header 20 0>;
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d21_gpios = <&arduino_mkr_header 21 0>;
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pwms = <&tcc0 2 255>,
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<&tcc0 3 255>;
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pwm-pins = <2 3>;
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};
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};
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&pinctrl {
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pwm_default: pwm_default {
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group1 {
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pinmux = <PA10F_TCC0_WO2>,
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<PA11F_TCC0_WO3>;
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};
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};
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};
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&tcc0 {
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status = "okay";
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compatible = "atmel,sam0-tcc-pwm";
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prescaler = <2>;
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#pwm-cells = <2>;
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pinctrl-0 = <&pwm_default>;
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pinctrl-names = "default";
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};

‎variants/arduino_nano_33_ble/arduino_nano_33_ble.overlay‎

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d19_gpios = <&arduino_nano_header 19 0>; /* D19 / A5 / I2C-SCL */
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d20_gpios = <&arduino_nano_header 20 0>;
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d21_gpios = <&arduino_nano_header 21 0>;
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pwms = <&pwm1 1 255 PWM_POLARITY_NORMAL>,
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<&pwm1 2 255 PWM_POLARITY_NORMAL>,
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<&pwm1 3 255 PWM_POLARITY_NORMAL>,
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<&pwm2 0 255 PWM_POLARITY_NORMAL>,
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<&pwm2 1 255 PWM_POLARITY_NORMAL>,
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<&pwm2 2 255 PWM_POLARITY_NORMAL>,
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<&pwm2 3 255 PWM_POLARITY_NORMAL>;
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pwm-pins = <3 5 6 13 9 10 11>;
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};
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};
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&pinctrl {
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pwm1_default: pwm1_default {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 1, 9)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 1, 12)>,
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<NRF_PSEL(PWM_OUT2, 1, 13)>,
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<NRF_PSEL(PWM_OUT3, 1, 14)>;
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nordic,invert;
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};
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};
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pwm1_sleep: pwm1_sleep {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 1, 9)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 1, 12)>,
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<NRF_PSEL(PWM_OUT2, 1, 13)>,
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<NRF_PSEL(PWM_OUT3, 1, 14)>;
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low-power-enable;
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};
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};
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pwm2_default: pwm2_default {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 0, 13)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 0, 27)>,
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<NRF_PSEL(PWM_OUT2, 1, 2)>,
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<NRF_PSEL(PWM_OUT3, 1, 1)>;
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nordic,invert;
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};
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};
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pwm2_sleep: pwm2_sleep {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 0, 13)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 0, 27)>,
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<NRF_PSEL(PWM_OUT2, 1, 2)>,
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<NRF_PSEL(PWM_OUT3, 1, 1)>;
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low-power-enable;
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};
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};
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};
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&pwm1 {
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status = "okay";
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pinctrl-0 = <&pwm1_default>;
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pinctrl-1 = <&pwm1_sleep>;
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pinctrl-names = "default", "sleep";
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};
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&pwm2 {
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status = "okay";
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pinctrl-0 = <&pwm2_default>;
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pinctrl-1 = <&pwm2_sleep>;
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pinctrl-names = "default", "sleep";
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};

‎variants/arduino_nano_33_ble_sense/arduino_nano_33_ble_sense.overlay‎

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d19_gpios = <&arduino_nano_header 19 0>; /* D19 / A5 / I2C-SCL */
2323
d20_gpios = <&arduino_nano_header 20 0>;
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d21_gpios = <&arduino_nano_header 21 0>;
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pwms = <&pwm1 1 255 PWM_POLARITY_NORMAL>,
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<&pwm1 2 255 PWM_POLARITY_NORMAL>,
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<&pwm1 3 255 PWM_POLARITY_NORMAL>,
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<&pwm2 0 255 PWM_POLARITY_NORMAL>,
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<&pwm2 1 255 PWM_POLARITY_NORMAL>,
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<&pwm2 2 255 PWM_POLARITY_NORMAL>,
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<&pwm2 3 255 PWM_POLARITY_NORMAL>;
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pwm-pins = <3 5 6 13 9 10 11>;
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};
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};
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&pinctrl {
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pwm1_default: pwm1_default {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 1, 9)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 1, 12)>,
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<NRF_PSEL(PWM_OUT2, 1, 13)>,
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<NRF_PSEL(PWM_OUT3, 1, 14)>;
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nordic,invert;
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};
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};
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pwm1_sleep: pwm1_sleep {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 1, 9)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 1, 12)>,
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<NRF_PSEL(PWM_OUT2, 1, 13)>,
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<NRF_PSEL(PWM_OUT3, 1, 14)>;
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low-power-enable;
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};
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};
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pwm2_default: pwm2_default {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 0, 13)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 0, 27)>,
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<NRF_PSEL(PWM_OUT2, 1, 2)>,
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<NRF_PSEL(PWM_OUT3, 1, 1)>;
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nordic,invert;
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};
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};
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pwm2_sleep: pwm2_sleep {
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group1 {
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psels = <NRF_PSEL(PWM_OUT0, 0, 13)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 0, 27)>,
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<NRF_PSEL(PWM_OUT2, 1, 2)>,
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<NRF_PSEL(PWM_OUT3, 1, 1)>;
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low-power-enable;
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};
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};
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};
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&pwm1 {
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status = "okay";
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pinctrl-0 = <&pwm1_default>;
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pinctrl-1 = <&pwm1_sleep>;
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pinctrl-names = "default", "sleep";
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};
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&pwm2 {
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status = "okay";
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pinctrl-0 = <&pwm2_default>;
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pinctrl-1 = <&pwm2_sleep>;
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pinctrl-names = "default", "sleep";
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};

‎variants/arduino_nano_33_iot/arduino_nano_33_iot.overlay‎

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@@ -22,5 +22,39 @@
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d19_gpios = <&arduino_nano_header 19 0>; /* D19 / A5 / I2C-SCL */
2323
d20_gpios = <&arduino_nano_header 20 0>;
2424
d21_gpios = <&arduino_nano_header 21 0>;
25+
pwms = <&tcc0 0 255>,
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<&tcc0 1 255>,
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<&tcc0 2 255>,
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<&tcc0 3 255>,
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<&tcc0 4 255>,
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<&tcc0 5 255>,
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<&tcc0 6 255>,
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<&tcc0 7 255>;
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pwm-pins = <6 5 17 12 2 3 9 10>;
2534
};
2635
};
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&pinctrl {
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pwm_default: pwm_default {
39+
group1 {
40+
pinmux = <PA4E_TCC0_WO0>,
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<PA5E_TCC0_WO1>,
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<PA10F_TCC0_WO2>,
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<PA19F_TCC0_WO3>,
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<PB10F_TCC0_WO4>,
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<PB11F_TCC0_WO5>,
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<PA20F_TCC0_WO6>,
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<PA21F_TCC0_WO7>;
48+
};
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};
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};
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&tcc0 {
53+
status = "okay";
54+
compatible = "atmel,sam0-tcc-pwm";
55+
prescaler = <2>;
56+
#pwm-cells = <2>;
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pinctrl-0 = <&pwm_default>;
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pinctrl-names = "default";
60+
};

‎variants/nrf52840dk_nrf52840/nrf52840dk_nrf52840.overlay‎

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@@ -23,5 +23,66 @@
2323
d20_gpios = <&arduino_header 4 0>;
2424
d21_gpios = <&arduino_header 5 0>;
2525
d22_gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
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pwms = <&pwm0 1 255 PWM_POLARITY_NORMAL>,
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<&pwm0 2 255 PWM_POLARITY_NORMAL>,
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<&pwm0 3 255 PWM_POLARITY_NORMAL>,
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<&pwm1 0 255 PWM_POLARITY_NORMAL>,
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<&pwm1 1 255 PWM_POLARITY_NORMAL>,
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<&pwm1 2 255 PWM_POLARITY_NORMAL>;
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pwm-pins = <22 3 5 6 9 10 11>;
2633
};
2734
};
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&pinctrl {
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pwm0_default: pwm0_default {
38+
group1 {
39+
psels = <NRF_PSEL(PWM_OUT0, 0, 13)>, /* keep original config */
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<NRF_PSEL(PWM_OUT1, 1, 4)>,
41+
<NRF_PSEL(PWM_OUT2, 1, 6)>,
42+
<NRF_PSEL(PWM_OUT3, 1, 7)>;
43+
nordic,invert;
44+
};
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};
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pwm0_sleep: pwm0_sleep {
48+
group1 {
49+
psels = <NRF_PSEL(PWM_OUT0, 0, 13)>, /* keep original config */
50+
<NRF_PSEL(PWM_OUT1, 1, 4)>,
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<NRF_PSEL(PWM_OUT2, 1, 6)>,
52+
<NRF_PSEL(PWM_OUT3, 1, 7)>;
53+
low-power-enable;
54+
};
55+
};
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pwm1_default: pwm1_default {
58+
group1 {
59+
psels = <NRF_PSEL(PWM_OUT0, 1, 11)>,
60+
<NRF_PSEL(PWM_OUT1, 1, 12)>,
61+
<NRF_PSEL(PWM_OUT2, 1, 13)>;
62+
nordic,invert;
63+
};
64+
};
65+
66+
pwm1_sleep: pwm1_sleep {
67+
group1 {
68+
psels = <NRF_PSEL(PWM_OUT0, 1, 11)>,
69+
<NRF_PSEL(PWM_OUT1, 1, 12)>,
70+
<NRF_PSEL(PWM_OUT2, 1, 13)>;
71+
low-power-enable;
72+
};
73+
};
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};
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&pwm0 {
77+
status = "okay";
78+
pinctrl-0 = <&pwm0_default>;
79+
pinctrl-1 = <&pwm0_sleep>;
80+
pinctrl-names = "default", "sleep";
81+
};
82+
83+
&pwm1 {
84+
status = "okay";
85+
pinctrl-0 = <&pwm1_default>;
86+
pinctrl-1 = <&pwm1_sleep>;
87+
pinctrl-names = "default", "sleep";
88+
};

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