mirror of
https://github.com/MarekZegare4/MeshCore-Solo.git
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JakubandClaude Opus 5
05e57357d3
New M5Stack Cardputer ADV variant (ESP32-S3, ST7789 TFT, built-in TCA8418 QWERTY keyboard, PI4IOE5V6408 LoRa-cap IO-expander autodetect), and a KeyShield accessory variant for the existing LilyGO T-Echo Lite (external TCA8418 T9 keypad + AW21009 backlight driver). Both keyboards share one ENV_USE_TCA8418 polling block in UITask.cpp::loop(), coexisting with the unrelated CardKB support (different chip/address/flag). Fixes carried in from the contributed T-Echo Lite code: swapped GPS RX/TX pins, TX-LED hooks, TCXO voltage, missing GxEPD2_122_T61 panel include. Fixed during integration: I2C bus was probed for an RTC before Wire.begin() configured its pins on Cardputer ADV (silent RTC autodetect failure). Added dedicated *_solo_dual release envs for both boards (auto-picked up by the solo-firmware release workflow). Gave the T-Echo Lite KeyShield solo build -Os/-Ofast-unflag like every other nRF52 solo build (was missing, cut flash usage from 90.7% to 61.4%). Ported the shared misc-fixed 6x9 font (full Latin/Greek/Cyrillic, opt-in via OLED_MISC_FIXED_FONT) to ST7789Display for the Cardputer's on-screen keyboard. ST7789Spi isn't Adafruit_GFX-based like the other single-font drivers, and this panel's logical->physical scale is non-integer, so glyphs are re-packed to XBM and blitted through the existing drawXbm(), which already does correct fractional-scale boundary math, rather than duplicating that logic. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
// TechoKeyBacklight.cpp
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// Self-contained AW21009(QNR) keyboard-backlight driver for the T-Echo Lite
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// KeyShield. Provides a single free function consumed by the UITask Home-key hook:
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//
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// void techo_keyshield_backlight_toggle(); // on <-> off
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//
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// Raw-Wire register driver. The register sequence mirrors LilyGo's
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// cpp_bus_driver Aw21009 implementation (reset / global-control / global-current
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// / per-channel scaling / latch, then 12-bit per-channel brightness), so no
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// dependency on that library is pulled in.
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#ifdef LILYGO_TECHO_LITE_KEYSHIELD
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#include <Arduino.h>
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#include <Wire.h>
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// ---- AW21009 (KeyShield backlight) -----------------------------------------
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// I2C 0x20 on the shared Wire bus. Wire.begin() (TechoBoard::begin) and the
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// shield 3V3 rail are already up before the UI loop runs, so this lazy-inits on
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// first toggle.
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#define AW21009_ADDR 0x20
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#define AW21009_REG_GCR 0x20 // global control (auto-save / PWM / chip enable)
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#define AW21009_REG_BRIGHT 0x21 // brightness start; per ch: LSB=0x21+ch*2, MSB+1
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#define AW21009_REG_UPDATE 0x45 // write-to-latch register
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#define AW21009_REG_SCALE 0x46 // per-channel current scaling start
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#define AW21009_REG_GCCR 0x58 // global current control
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#define AW21009_REG_RESET 0x70 // software reset
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#define AW21009_CHANNELS 6
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#define AW21009_ON_LEVEL 4095 // 0..4095; lower this to dim the backlight
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static void aw_write(uint8_t reg, uint8_t val) {
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Wire.beginTransmission(AW21009_ADDR);
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Wire.write(reg);
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Wire.write(val);
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Wire.endTransmission();
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}
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static void aw_init() {
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aw_write(AW21009_REG_RESET, 0x00); // software reset
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delay(10);
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aw_write(AW21009_REG_GCR, 0x87); // auto power save + 12-bit PWM + chip enable
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aw_write(AW21009_REG_GCCR, 0xFF); // global current = max
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for (uint8_t i = 0; i < AW21009_CHANNELS; i++)
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aw_write(AW21009_REG_SCALE + i, 0xFF); // per-channel current = max
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aw_write(AW21009_REG_UPDATE, 0x00); // latch
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}
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static void aw_set_brightness(uint16_t value) {
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if (value > 4095) value = 4095;
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for (uint8_t i = 0; i < AW21009_CHANNELS; i++) {
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aw_write(AW21009_REG_BRIGHT + i * 2, (uint8_t)(value & 0xFF)); // LSB
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aw_write(AW21009_REG_BRIGHT + i * 2 + 1, (uint8_t)((value >> 8) & 0x0F)); // MSB (12-bit)
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}
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aw_write(AW21009_REG_UPDATE, 0x00); // latch
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}
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void techo_keyshield_backlight_toggle() {
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static bool inited = false;
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static bool on = false;
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if (!inited) { aw_init(); inited = true; }
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on = !on;
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aw_set_brightness(on ? AW21009_ON_LEVEL : 0);
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}
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#endif |