ref: ad1df2d2a01bd064e643287ff305673dfede3ce3
dir: /boards/xtensa/ttgo_lora32/ttgo_lora32.dts/
/*
* Copyright (c) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br)
*
* SPDX-License-Identifier: Apache-2.0
*/
/dts-v1/;
#include <espressif/esp32/esp32_pico_d4.dtsi>
#include "ttgo_lora32-pinctrl.dtsi"
#include <zephyr/dt-bindings/input/input-event-codes.h>
/ {
model = "ttgo_lora32";
compatible = "espressif,esp32";
aliases {
uart-0 = &uart0;
i2c-0 = &i2c0;
led0 = &led0;
//sw0 = &button0;
watchdog0 = &wdt0;
lora0 = &lora0;
};
leds {
compatible = "gpio-leds";
led0: led {
gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
label = "White LED";
};
vext: vext {
gpios = <&gpio0 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
label = "External VCC";
};
/*
oledrst: oledrst {
gpios = <&gpio0 16 (GPIO_PULL_UP | GPIO_ACTIVE_HIGH)>;
label = "OLED Reset";
};
*/
};
/*
buttons {
compatible = "gpio-keys";
button0: button_0 {
gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
label = "PRG Button";
zephyr,code = <INPUT_KEY_0>;
};
};
*/
chosen {
zephyr,sram = &sram0;
zephyr,console = &uart0;
zephyr,shell-uart = &uart0;
zephyr,flash = &flash0;
zephyr,display = &oled_screen;
};
};
&cpu0 {
clock-frequency = <ESP32_CLK_CPU_240M>;
};
&cpu1 {
clock-frequency = <ESP32_CLK_CPU_240M>;
};
&uart0 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&uart0_default>;
pinctrl-names = "default";
};
&gpio0 {
status = "okay";
};
&gpio1 {
status = "okay";
};
&trng0 {
status = "okay";
};
&i2c0 {
status = "okay";
clock-frequency = <I2C_BITRATE_FAST>;
sda-gpios = <&gpio0 4 GPIO_OPEN_DRAIN>;
scl-gpios = <&gpio0 15 GPIO_OPEN_DRAIN>;
pinctrl-0 = <&i2c0_default>;
pinctrl-names = "default";
oled_screen: ssd1306@3c {
compatible = "solomon,ssd1306fb";
reg = <0x3c>;
width = <128>;
height = <64>;
segment-offset = <0>;
page-offset = <0>;
display-offset = <0>;
multiplex-ratio = <63>;
segment-remap;
com-invdir;
prechargep = <0x22>;
};
};
&spi3 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
pinctrl-0 = <&spim3_default>;
pinctrl-names = "default";
cs-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
lora0: sx1276@0 {
compatible = "semtech,sx1276";
reg = <0>;
reset-gpios = <&gpio0 23 GPIO_ACTIVE_LOW>;
dio-gpios =
/* SX1276 D0 -> GPIO26 */
<&gpio0 26 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>,
/* SX1276 D1 -> GPIO35 */
<&gpio1 1 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>,
/* SX1276 D1 -> GPIO34 */
<&gpio0 32 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
spi-max-frequency = <1000000>;
power-amplifier-output = "pa-boost";
};
};
&flash0 {
/* the board is using plain d0wd SoC part without the flash
* so any additional flash size should be defined at the board level
*/
reg = <0x0 DT_SIZE_M(8)>;
status = "okay";
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
/* Reserve 60kB for the bootloader */
boot_partition: partition@1000 {
label = "mcuboot";
reg = <0x00001000 0x0000F000>;
read-only;
};
/* Reserve 1024kB for the application in slot 0 */
slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 0x00100000>;
};
/* Reserve 1024kB for the application in slot 1 */
slot1_partition: partition@110000 {
label = "image-1";
reg = <0x00110000 0x00100000>;
};
/* Reserve 256kB for the scratch partition */
scratch_partition: partition@210000 {
label = "image-scratch";
reg = <0x00210000 0x00040000>;
};
storage_partition: partition@250000 {
label = "storage";
reg = <0x00250000 0x00006000>;
};
};
};
/* Required by the ssd1306_128x64 shield which enables the OLED display */
arduino_i2c: &i2c0 {};