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boards: riscv: longan_nano: Add LED and button configuration

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Add configuration to support onboard LED and button.

- LED_R: PC13 (active low/output)
- LED_G: PA1  (active low/output)
- LED_B: PA2  (active low/output)
- BOOT0: PA8  (active high/input)

And enable timer1 to control LED_G and LED_B with PWM.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
This commit is contained in:
TOKITA Hiroshi 2022-01-13 19:21:33 +09:00 • committed by Maureen Helm
commit c72b75fc45
4 changed files with 106 additions and 40 deletions
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98
boards/riscv/longan_nano/longan_nano-common.dtsi Normal file
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@ -0,0 +1,98 @@
/*
* Copyright (c) 2021 Tokita, Hiroshi <tokita.hiroshi@gmail.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
/ {
chosen {
zephyr,console = &usart0;
zephyr,shell-uart = &usart0;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
};
leds {
compatible = "gpio-leds";
led_red: led_red {
gpios = <&gpioc 13 GPIO_ACTIVE_LOW>;
label = "LED_R";
};
led_green: led_green {
gpios = <&gpioa 1 GPIO_ACTIVE_LOW>;
label = "LED_G";
};
led_blue: led_blue {
gpios = <&gpioa 2 GPIO_ACTIVE_LOW>;
label = "LED_B";
};
};
gpio_keys {
compatible = "gpio-keys";
button_boot0: button_boot0 {
label = "BUTTON_BOOT0";
gpios = <&gpioa 8 GPIO_ACTIVE_HIGH>;
};
};
pwmleds {
compatible = "pwm-leds";
/* NOTE: bridge TIMER1_CH1 and LED_GREEN (PA1) */
pwm_led_green: pwm_led_green {
pwms = <&pwm1 1 PWM_POLARITY_NORMAL>;
label = "PWM_LED_G";
};
/* NOTE: bridge TIMER1_CH2 and LED_BLUE (PA2) */
pwm_led_blue: pwm_led_blue {
pwms = <&pwm1 2 PWM_POLARITY_NORMAL>;
label = "PWM_LED_B";
};
};
aliases {
led0 = &led_red;
led1 = &led_green;
led2 = &led_blue;
pwm-led0 = &pwm_led_green;
pwm-led1 = &pwm_led_blue;
sw0 = &button_boot0;
};
};
&gpioa {
status = "okay";
};
&gpiob {
status = "okay";
};
&gpioc {
status = "okay";
};
&usart0 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&usart0_default>;
pinctrl-names = "default";
};
&timer1 {
status = "okay";
prescaler = <4096>;
pwm1: pwm {
status = "okay";
pinctrl-0 = <&pwm1_default>;
pinctrl-names = "default";
};
};
&dac {
status = "okay";
pinctrl-0 = <&dac_default>;
pinctrl-names = "default";
};

6
boards/riscv/longan_nano/longan_nano-pinctrl.dtsi
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@ -12,6 +12,12 @@
};
};
pwm1_default: pwm1_default {
group1 {
pinmux = <TIMER1_CH1_PA1_OUT_NORMP>, <TIMER1_CH2_PA2_OUT_NORMP>;
};
};
dac_default: dac_default {
group1 {
pinmux = <DAC_OUT0_PA4>;

21
boards/riscv/longan_nano/longan_nano.dts
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@ -7,28 +7,9 @@
/dts-v1/;
#include <gigadevice/gd32vf103Xb.dtsi>
#include "longan_nano-pinctrl.dtsi"
#include "longan_nano-common.dtsi"
/ {
model = "Sipeed Longan Nano";
compatible = "sipeed,longan_nano";
chosen {
zephyr,console = &usart0;
zephyr,shell-uart = &usart0;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
};
};
&usart0 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&usart0_default>;
pinctrl-names = "default";
};
&dac {
status = "okay";
pinctrl-0 = <&dac_default>;
pinctrl-names = "default";
};

21
boards/riscv/longan_nano/longan_nano_lite.dts
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@ -7,28 +7,9 @@
/dts-v1/;
#include <gigadevice/gd32vf103X8.dtsi>
#include "longan_nano-pinctrl.dtsi"
#include "longan_nano-common.dtsi"
/ {
model = "Sipeed Longan Nano Lite";
compatible = "sipeed,longan_nano_lite";
chosen {
zephyr,console = &usart0;
zephyr,shell-uart = &usart0;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
};
};
&usart0 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&usart0_default>;
pinctrl-names = "default";
};
&dac {
status = "okay";
pinctrl-0 = <&dac_default>;
pinctrl-names = "default";
};