Support for ESP32-S3-Box v3

[patfelst]

Hi there,

I see the library has support for ESP32-S3-BOX, however this is no longer in production and has been superseded by the ESP32-BOX-S3-3 (an overly long model number, note the "-3" suffix).

Please see here https://github.com/espressif/esp-box/tree/master

The device currently supported by your library has, I think, the same SPI pinout, but LCD backlight is on GPIO47 vs GPIO45 for the S3-BOX, hence selecting AUTODETECT or specifying

#define LGFX_ESP32_S3_BOX                  // Espressif ESP32-S3-BOX

Compiles ok, but nothing is displayed on the LCD.

The pinout is on the schematic here https://github.com/espressif/esp-box/blob/master/hardware/SCH_ESP32-S3-BOX-3_V1.0/SCH_ESP32-S3-BOX-3-MB_V1.1_20230808.pdf

The LCD backlight control is on GPIO47.

Thanks for your assistance.

[tobozo]

hi,

thanks for your feedback 👍

indeed the autodetect sequence will need a new entry, but first let's validate the display and touch configuration

does it work if you edit manually the struct detector to set the correct pin number for the backlight and change MISO value to (gpio_num_t)-1 ?

[patfelst]

thankyou - unfortunately after I manually edit the detector and recompile, the display is still black. I've never used ESP32-S3-BOX-3 before, so I'm not sure if there's some other initialisation that needs to be done, for example some kind of power supply enable or similar.

I turned on verbose logging and saw:

Reconnecting to /dev/cu.usbmodem2101 .   Connected!
[  5118][I][LGFX_AutoDetect_ESP32_all.hpp:991] init_impl(): [LovyanGFX] [Autodetect] load from NVS : board:0
[  5141][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5164][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5187][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5210][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5233][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5256][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5279][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5302][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5325][V][LGFX_AutoDetect_ESP32_all.hpp:696] _read_panel_id(): [LovyanGFX] [Autodetect] read cmd:04 = 00000000
[  5335][I][LGFX_AutoDetect_ESP32_all.hpp:1016] init_impl(): [LovyanGFX] [Autodetect] save to NVS : board:0

Here is the code I used

#include <Arduino.h>

#define LGFX_ESP32_S3_BOX  // Espressif ESP32-S3-BOX
// #define LGFX_AUTODETECT

#include <LGFX_AUTODETECT.hpp>
#include <LovyanGFX.hpp>
static LGFX lcd;

#include "FastLED.h"
#include "TickTwo.h"
// lots of variable declarations and #define constants
void setup(void) {
  Serial.begin(115200);
  delay(5000);  // Wait for serial port to begin

  lcd.init();
  lcd.setBrightness(255);

  lcd.clear(TFT_GREEN);
  delay(1000);
  lcd.clear();

  lcd.setFont(&fonts::FreeSans12pt7b);
  lcd.setTextColor(TFT_GREEN, TFT_BLACK);
  lcd.setTextDatum(top_center);
  int x = lcd.width() / 2;
  int y = lcd.height() / 2;
  lcd.drawString("Hello World", x, y);
  while (true);
}

PlatformIO.ini

[env:S3-Box-AD8318]
platform = espressif32
board = esp32s3box
framework = arduino
monitor_speed = 115200

build_flags = 
  ; -DCORE_DEBUG_LEVEL=0 ; None
  ; -DCORE_DEBUG_LEVEL=1 ; Error *
  ; -DCORE_DEBUG_LEVEL=2 ; Warn
  ; -DCORE_DEBUG_LEVEL=3 ; Info
  ; -DCORE_DEBUG_LEVEL=4 ; Debug *
  -DCORE_DEBUG_LEVEL=5 ; Verbose

lib_deps = 
  lovyan03/LovyanGFX
  fastled/FastLED
  sstaub/TickTwo

[tobozo]

can't find much difference either

maybe disable the id checker since miso is disabled, e.g. replace 0x04, 0xff, 0xE3 by 0,0,0

[patfelst]

I don't know what those numbers do, but there is progress. The backlight is now on, and the screen is white. But the brightness level is changing, i.e. if I set brightness to 50%, it is definitely not as bright. But still no graphics displayed, now just a white screen. Log output slightly different:

Reconnecting to /dev/cu.usbmodem101      Connected!
[  5118][I][LGFX_AutoDetect_ESP32_all.hpp:991] init_impl(): [LovyanGFX] [Autodetect] load from NVS : board:0
[  5140][I][LGFX_AutoDetect_ESP32_all.hpp:1173] setup(): [LovyanGFX] [Autodetect] ESP32_S3_BOX
[  5301][I][esp32-hal-i2c.c:75] i2cInit(): Initialising I2C Master: sda=8 scl=18 freq=100000

[tobozo]

last thing to try: manually set the reset pin as input_pullup pinMode(GPIO_NUM_48, INPUT_PULLUP) and set the RST pin to (gpio_num_t)-1 in the autodetect config block

after this I can't think of anything else without ordering a unit and start poking around, but this will take weeks before it gets delivered

[patfelst]

success! It was the reset pin that fixed it. Now for the touchscreen? Thanks for your help.

By the way, on this ESP32-S3 chip, I have to press the reset button to run code after an upload, it doesn't auto run for some reason.

[tobozo]

🥳

Now for the touchscreen?

remove the while(1) from you setup and use this loop() test function:

void loop() {
  std::int32_t x, y, number = 0;
  while (display.getTouch(&x, &y, number))
  {
    display.fillCircle(x, y, 5, (std::uint32_t)(number * 0x333333u));
    ++number;
  }
}

I have to press the reset button to run code after an upload

I have this too when I select OTG as USB mode (board_build.usb_mode=0), maybe this can be controlled from the platformio.ini

[patfelst]

here we go again, no circles displayed on the screen. Any suggestions what to try this time? As far as I can tell, the touchscreen is the same as the previous ESP32-BOX, i.e. I2C lines SDA=GPIO8, SCL=GPIO18 and interrupt CTP_INT=GPIO3

[tobozo]

Touch_TT21xxx class doesn't seem to make much of cfg.pin_int so unless you want to read the touch data from an ISR it's safe to disable it

you can first try to set this: cfg.i2c_port = I2C_NUM_0

eventually perform an I2C scan to see if I2C0 is shared with other I2C devices, if so you can also try to set this: cfg.bus_shared = true

[patfelst]

OK I've set cfg.pin_int to -1. And then have tried various combinations of I2C port 0 and 1, and shared true / false. I tried an I2C scanner, not sure if I set it up correct, in setup() I had to put Wire1.begin(8, 18);. I saw the following:

            I2C device found at address 0x18
            I2C device found at address 0x40
            I2C device found at address 0x5D
            I2C device found at address 0x68

I've substituted each of those addresses in cfg.i2c_addr = 0x24; but it still doesn't seem to work.

[tobozo]

Wire1.begin << something wrong with Wire.begin ? looks like you're scanning I2C1 instead of I2C0

[patfelst]

Yes because when I scan I2C0 I get

[  2345][W][Wire.cpp:301] begin(): Bus already started in Master Mode.
Scanning...
No I2C devices found

[tobozo]

whoops I2C device found at address 0x5D actually smells like GT911 instead of TT21100

maybe update cfg.i2c_addr = 0x5D and change this: auto t = new lgfx::Touch_TT21xxx() into this auto t = new lgfx::Touch_GT911()

[patfelst]

no good unfortunately, this is what I have

      struct _detector_ESP32_S3_BOX_t : public _detector_spi_t
      {
        constexpr _detector_ESP32_S3_BOX_t(void) :
        _detector_spi_t
        { board_t::board_ESP32_S3_BOX
        , 0, 0, 0 // ILI9342C
        , 40000000, 16000000
        , GPIO_NUM_6      // MOSI
        , (gpio_num_t)-1      // MISO
        , GPIO_NUM_7      // SCLK
        , GPIO_NUM_4      // DC
        , GPIO_NUM_5      // CS
        , (gpio_num_t)-1     // RST
        , (gpio_num_t)-1  // TF CARD CS
        , 0               // SPI MODE
        , true            // SPI 3wire
        , SPI2_HOST       // SPI HOST
        } {}

        void setup(_detector_result_t* result) const override
        {
          ESP_LOGI(LIBRARY_NAME, "[Autodetect] ESP32_S3_BOX");
          auto p = new Panel_ILI9342();
          result->panel = p;
          {
            auto cfg = p->config();
            // cfg.pin_cs  = GPIO_NUM_5;
            // cfg.pin_rst = GPIO_NUM_48;
            cfg.offset_rotation = 1;
            p->config(cfg);    // config設定;
            p->setRotation(1); // config設定後に向きを設定;
            p->light(_create_pwm_backlight(GPIO_NUM_47, 0, 12000));
          }

          {
            auto t = new lgfx::Touch_GT911();
            auto cfg = t->config();
            // cfg.pin_int  = GPIO_NUM_3;
            cfg.pin_int  = -1;
            cfg.pin_sda  = GPIO_NUM_8;
            cfg.pin_scl  = GPIO_NUM_18;
            // cfg.i2c_addr = 0x24;
            cfg.i2c_addr = 0x5D;
            // I2C device found at address 0x18
            // I2C device found at address 0x40
            // I2C device found at address 0x5D
            // I2C device found at address 0x68
            cfg.i2c_port = I2C_NUM_0;
            cfg.freq = 400000;
            cfg.x_min = 0;
            cfg.x_max = 319;
            cfg.y_min = 0;
            cfg.y_max = 239;
            cfg.bus_shared = true;
            t->config(cfg);
            p->touch(t);
            float affine[6] = { 1, 0, 0, 0, -1, 240 };
            p->setCalibrateAffine(affine);
          }
        }
      };