Ken Van Hoeylandt
d896657bf9
Device migrations: - cyd-4848S040c - guition-jc1060p470ciwy - guition-jc2432w328c - guition-jc3248w535c (known issue with display and touch, Shadowtrance will look into it) - guition-jc8048w550c - heltec-wifi-lora-32-v3 - lilygo-tdeck-max (excluding graphics) - lilygo-tdisplay - lilygo-tdisplay-s3 - lilygo-tdongle-s3 - lilygo-tlora-pager Driver migrations: - Implemented haptic driver interface in kernel - AXS15231b - BQ25896 - BQ27220 - CST328 - CST6xx - DRV2605 - JD9165 - Custom LilyGO driver for T-Lora Pager - SSD1306 - ST7701 - ST7735 - SY6970 - TCA8418 Fixes/improvements: - Boot app: support for multiple power devices, improved UI - lvgl_devices and related code: fixes for mapping - Support for arrays in dts parser
117 lines
4.0 KiB
Devicetree
117 lines
4.0 KiB
Devicetree
/dts-v1/;
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#include <tactility/bindings/root.h>
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#include <tactility/bindings/esp32_ble.h>
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#include <tactility/bindings/esp32_wifi_pinned.h>
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#include <tactility/bindings/esp32_gpio.h>
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#include <tactility/bindings/esp32_i2c.h>
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#include <tactility/bindings/esp32_adc_oneshot.h>
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#include <tactility/bindings/battery_sense.h>
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#include <tactility/bindings/gpio_hog.h>
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#include <bindings/button_control.h>
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#include <bindings/ssd1306.h>
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/ {
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compatible = "root";
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model = "Heltec WiFi LoRa 32 V3";
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wifi0 {
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compatible = "espressif,esp32-wifi-pinned";
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status = "disabled";
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};
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ble0 {
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compatible = "espressif,esp32-ble";
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status = "disabled";
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};
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gpio0 {
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compatible = "espressif,esp32-gpio";
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gpio-count = <49>;
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};
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// Board power-enable pins. Must be asserted before the dependent devices below start, since
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// devicetree devices are constructed and started during kernel_init(), earlier than the
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// deprecated HAL's initBoot() used to run. gpio-hog nodes run in declaration order, so they
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// must stay before their dependents.
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oled_power_en {
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// Active low (external pull-up on the board).
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compatible = "gpio-hog";
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pin = <&gpio0 36 GPIO_FLAG_NONE>;
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mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
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};
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adc_ctrl_en {
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compatible = "gpio-hog";
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pin = <&gpio0 37 GPIO_FLAG_NONE>;
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mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
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};
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i2c_internal {
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compatible = "espressif,esp32-i2c";
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port = <I2C_NUM_0>;
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clock-frequency = <200000>;
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pin-sda = <&gpio0 17 GPIO_FLAG_NONE>;
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pin-scl = <&gpio0 18 GPIO_FLAG_NONE>;
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display0 {
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compatible = "solomon,ssd1306";
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reg = <0x3C>;
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horizontal-resolution = <128>;
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vertical-resolution = <64>;
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pin-reset = <&gpio0 21 GPIO_FLAG_NONE>;
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// oled_power_en above only just asserted the OLED's power rail moments earlier in
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// the same kernel_init() pass - matches the deprecated HAL's old
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// enableOledPower()'s explicit 500ms settle delay before touching the chip.
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power-on-delay-ms = <500>;
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// Vendor bring-up sequence, carried over unchanged from the deprecated HAL's old
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// Ssd1306Display.cpp (its own comment: "esp_lcd_panel_init() ... doesn't configure
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// correctly for Heltec V3!"). Each byte is its own SSD1306 command - see
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// ssd1306-module's init-sequence binding property for the encoding.
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init-sequence = [
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0xAE // Display off while configuring
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0xD5 0xF0 // Set oscillator frequency (~96 Hz) - must come early in the sequence
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0xA8 0x3F // Set multiplex ratio (vertical-resolution - 1 = 64 - 1)
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0xD3 0x00 // Set display offset
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0x40 // Set display start line = 0
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0x8D 0x14 // Enable charge pump - must be before memory mode
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0x20 0x00 // Horizontal addressing mode
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0xA1 // Segment remap (Heltec V3 orientation)
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0xC8 // Scan direction reversed
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0xDA 0x12 // COM pin config (alternate, for 64-row displays)
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0x81 0xCF // Contrast
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0xD9 0xF1 // Pre-charge period
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0xDB 0x40 // VCOMH deselect level
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0x21 0x00 0x7F // Column address range: 0 to (horizontal-resolution - 1)
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0x22 0x00 0x07 // Page address range: 0 to 7 (for a 64-row display)
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0xA7 // Display invert - required for this panel's wiring
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0x2E // Stop scroll
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0xAF // Display on
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];
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};
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};
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adc0 {
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compatible = "espressif,esp32-adc-oneshot";
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unit-id = <ADC_UNIT_1>;
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channels = <ADC_CHANNEL_3 ADC_ATTEN_DB_12 ADC_BITWIDTH_DEFAULT>;
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};
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// Matches the deprecated HAL's old Power.cpp: ADC1 CH3 behind a 2:1 divider, with +0.11
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// added as display voltage sag compensation (adcMultiplier = 2.11, so multiplier = 2110).
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// reference-voltage-mv is the nominal full-scale value at ADC_ATTEN_DB_12 (battery-sense has
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// no calibration path, unlike the old driver's raw-scaling formula).
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battery-sense {
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compatible = "battery-sense";
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io-channel = <&adc0 0>;
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reference-voltage-mv = <3300>;
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multiplier = <2110>;
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};
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buttons {
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compatible = "tactility,button-control";
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pin-primary = <&gpio0 0 GPIO_FLAG_NONE>;
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};
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};
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