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max - alt+b screen front light set to brightness 10 sans diagnostics

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pelgraine
2026-06-02 22:49:00 +10:00
parent bc8f36fd0f
commit 4c4efd4cf3
1 changed files with 6 additions and 56 deletions
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variants/lilygo_tdeck_max/TDeckProMaxBoard.cpp
+6 -56
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@@ -2,8 +2,6 @@
#include "variant.h"
#include "TDeckProMaxBoard.h"
#include <Mesh.h> // For MESH_DEBUG_PRINTLN
#include "soc/gpio_reg.h" // GPIO_ENABLE1_REG/OUT1/IN1/FUNC0_OUT_SEL_CFG (diagnostic)
#include "soc/io_mux_reg.h" // IO_MUX_GPIO41_REG / IO_MUX_GPIO42_REG (diagnostic)
// LEDC channel for e-ink backlight PWM (Arduino ESP32 core 2.x channel-based API)
#ifdef PIN_EINK_BL
@@ -29,39 +27,6 @@
// to handle XL9555-routed pins. BQ27220 methods are inherited unchanged.
// =============================================================================
#ifdef PIN_EINK_BL
// DIAGNOSTIC helper: dump the low-level state of one GPIO so the frontlight pin
// (GPIO41 / MTDI) and the keyboard-backlight pin (GPIO42 / MTMS) can be compared
// directly. Per the V0.1 schematic both are identical S8050 low-side LED switches
// with VDD3V3 anodes, yet IO42 lights and IO41 does not. This prints the output
// enable, output/input level, the IO_MUX function select, and the GPIO-matrix
// output signal so we can see what differs about GPIO41.
// ESP32-S3 note: GPIO 41/42 live in the *1 register banks (bit = gpio - 32).
static void dumpGpioState(const char* label, int gpio, uint32_t muxReg) {
uint32_t en1 = REG_READ(GPIO_ENABLE1_REG);
uint32_t out1 = REG_READ(GPIO_OUT1_REG);
uint32_t in1 = REG_READ(GPIO_IN1_REG);
uint32_t mux = REG_READ(muxReg);
uint32_t fcfg = REG_READ(GPIO_FUNC0_OUT_SEL_CFG_REG + (uint32_t)gpio * 4);
int bit = gpio - 32; // 41 -> bit 9, 42 -> bit 10
Serial.printf(
" %s GPIO%d: OEN=%d OUT=%d IN=%d | IO_MUX=0x%08X MCU_SEL=%d FUN_IE=%d FUN_DRV=%d WPU=%d WPD=%d | FUNC_OUT_SEL=0x%08X sig=%d\n",
label, gpio,
(int)((en1 >> bit) & 1),
(int)((out1 >> bit) & 1),
(int)((in1 >> bit) & 1),
mux,
(int)((mux >> 12) & 0x7), // MCU_SEL : IO_MUX function select
(int)((mux >> 9) & 0x1), // FUN_IE : input enable
(int)((mux >> 10) & 0x3), // FUN_DRV : drive strength
(int)((mux >> 8) & 0x1), // FUN_WPU : pull-up
(int)((mux >> 7) & 0x1), // FUN_WPD : pull-down
fcfg,
(int)(fcfg & 0x1FF) // func_sel: output signal index (256 = direct GPIO_OUT)
);
}
#endif
void TDeckProMaxBoard::begin() {
MESH_DEBUG_PRINTLN("TDeckProMaxBoard::begin() - T-Deck Pro MAX V0.1");
@@ -88,23 +53,11 @@ for (uint8_t a = 0x6A; a <= 0x6B; a++) {
// without XL9555, but LoRa/GPS/modem will be dead.
}
// DIAGNOSTIC: GPIO41 (frontlight) vs GPIO42 (keyboard backlight) register
// comparison. Per the V0.1 schematic both are identical S8050 low-side LED
// switches with VDD3V3 anodes, differing only in the GPIO -- IO42 lights,
// IO41 does not. Dump each pin's register state at boot to establish the
// baseline that the post-boot backlightOn() dump can be compared against.
// Configure the e-ink frontlight pin (IO41) as an output, held LOW so the
// panel starts dark at boot. Lit only by backlightOn() (Alt+B).
#ifdef PIN_EINK_BL
Serial.println(">>> BL DIAG: GPIO41 (frontlight) vs GPIO42 (keyboard) register compare");
Serial.println(" [baseline -- after XL9555 init, before driving either pin]");
dumpGpioState("FRONTLIGHT", 41, IO_MUX_GPIO41_REG);
dumpGpioState("KEYBOARD ", 42, IO_MUX_GPIO42_REG);
pinMode(42, OUTPUT); digitalWrite(42, HIGH); // keyboard backlight -- known-good reference
pinMode(41, OUTPUT); digitalWrite(41, LOW); // frontlight -- held LOW so only backlightOn() can light it
delay(5);
Serial.println(" [after: IO42 HIGH (reference), IO41 output held LOW]");
dumpGpioState("FRONTLIGHT", 41, IO_MUX_GPIO41_REG);
dumpGpioState("KEYBOARD ", 42, IO_MUX_GPIO42_REG);
pinMode(PIN_EINK_BL, OUTPUT);
digitalWrite(PIN_EINK_BL, LOW);
#endif
// ------ Step 3: Touch reset pulse ------
@@ -170,9 +123,8 @@ for (uint8_t a = 0x6A; a <= 0x6B; a++) {
#endif
// ------ Step 12: E-ink backlight ------
// No-op: the diagnostic block above already configured IO41 as an output and
// left it LOW at boot. The frontlight is now lit only by backlightOn() (Alt+B),
// so we can capture the post-boot register state from inside that call.
// No-op: IO41 was already configured as an output and held LOW earlier in
// begin(). The frontlight is lit only by backlightOn() (Alt+B).
MESH_DEBUG_PRINTLN("TDeckProMaxBoard::begin() - complete");
}
@@ -386,7 +338,6 @@ void TDeckProMaxBoard::loraPowerOff() {
void TDeckProMaxBoard::backlightOn() {
#ifdef PIN_EINK_BL
analogWrite(PIN_EINK_BL, 10);
dumpGpioState("FRONTLIGHT", PIN_EINK_BL, IO_MUX_GPIO41_REG); // TEMP diagnostic
#endif
_backlightOn = true;
}
@@ -394,7 +345,6 @@ void TDeckProMaxBoard::backlightOn() {
void TDeckProMaxBoard::backlightOff() {
#ifdef PIN_EINK_BL
analogWrite(PIN_EINK_BL, 0);
dumpGpioState("FRONTLIGHT", PIN_EINK_BL, IO_MUX_GPIO41_REG); // TEMP diagnostic
#endif
_backlightOn = false;
}