Hi,
I am designing an interface using Squareline. All the generated code by squareline is in a folder along with the main code that is attached below. the code builds and flashes with no error. however, the LCD keeps rebooting with the following error:
Guru Meditation Error: Core 0 panic’ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC : 0x42017789 PS : 0x00060f30 A0 : 0x82016d89 A1 : 0x3fcf5dc0
A2 : 0x00000000 A3 : 0x00000000 A4 : 0x00000010 A5 : 0x00000000
A6 : 0x00000000 A7 : 0x00000010 A8 : 0x8202b45e A9 : 0x3fcf5da0
A10 : 0x00000000 A11 : 0x0000004c A12 : 0x00000159 A13 : 0x00000001
A14 : 0x00000000 A15 : 0x3fcc9ef4 SAR : 0x0000001f EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000022 LBEG : 0x400555cd LEND : 0x400555e1 LCOUNT : 0xffffffff
Backtrace: 0x42017786:0x3fcf5dc0 0x42016d86:0x3fcf5de0 0x42031cdf:0x3fcf5e00 0x4200d133:0x3fcf5e20 0x4200a66f:0x3fcf5e40 0x420097e6:0x3fcf5e60 0x42056a23:0x3fcf5e80 0x40380b5d:0x3fcf5eb0
ELF file SHA256: 2695906877ba8a29
Rebooting.
No luck so far to resolve it.
I appreciate any input.
IDE: Arduino
LCD/Board: ESP32 Development Board WT32-SC01 Plus
Arduino Code:
//--------------------------------------------------------------------------
#include <Wire.h>
// LovyanGFX
#define LGFX_USE_V1
#include <LovyanGFX.hpp>
// LVGL
#include <lvgl.h>
#include "ui.h"
static const int RXPin = 10, TXPin = 11, sclPin = 12, sdaPin = 13;
static const uint32_t GPSBaud = 9600;
#define LGFX_USE_V1
#include <LovyanGFX.hpp>
class LGFX : public lgfx::LGFX_Device {
lgfx::Panel_ST7796 _panel_instance;
lgfx::Bus_Parallel8 _bus_instance;
lgfx::Light_PWM _light_instance;
lgfx::Touch_FT5x06 _touch_instance;
public:
LGFX(void) {
{
auto cfg = _bus_instance.config();
cfg.freq_write = 40000000;
cfg.pin_wr = 47;
cfg.pin_rd = -1;
cfg.pin_rs = 0;
cfg.pin_d0 = 9;
cfg.pin_d1 = 46;
cfg.pin_d2 = 3;
cfg.pin_d3 = 8;
cfg.pin_d4 = 18;
cfg.pin_d5 = 17;
cfg.pin_d6 = 16;
cfg.pin_d7 = 15;
_bus_instance.config(cfg);
_panel_instance.setBus(&_bus_instance);
}
{
auto cfg = _panel_instance.config();
cfg.pin_cs = -1;
cfg.pin_rst = 4;
cfg.pin_busy = -1;
cfg.memory_width = 480;
cfg.memory_height = 320;
cfg.panel_width = 480;
cfg.panel_height = 320;
cfg.offset_x = 0;
cfg.offset_y = 0;
cfg.offset_rotation = 0;
cfg.dummy_read_pixel = 8;
cfg.dummy_read_bits = 1;
cfg.readable = true;
cfg.invert = true;
cfg.rgb_order = false;
cfg.dlen_16bit = false;
cfg.bus_shared = true;
_panel_instance.config(cfg);
}
{
auto cfg = _light_instance.config();
cfg.pin_bl = 45;
cfg.invert = false;
cfg.freq = 44100;
cfg.pwm_channel = 7;
_light_instance.config(cfg);
_panel_instance.setLight(&_light_instance);
}
{
auto cfg = _touch_instance.config();
cfg.i2c_port = 1;
cfg.i2c_addr = 0x38;
cfg.pin_sda = 6;
cfg.pin_scl = 5;
cfg.freq = 400000;
cfg.x_min = 0;
cfg.x_max = 480;
cfg.y_min = 0;
cfg.y_max = 320;
_touch_instance.config(cfg);
_panel_instance.setTouch(&_touch_instance);
}
setPanel(&_panel_instance);
}
};
static LGFX tft;
/*Change to your screen resolution*/
static const uint32_t screenWidth = 480;
static const uint32_t screenHeight = 320;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[screenWidth * 10];
/* Display flushing */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p) {
uint32_t w = (area->x2 - area->x1 + 1);
uint32_t h = (area->y2 - area->y1 + 1);
tft.startWrite();
tft.setAddrWindow(area->x1, area->y1, w, h);
tft.writePixels((lgfx::rgb565_t *)&color_p->full, w * h);
tft.endWrite();
lv_disp_flush_ready(disp);
}
/*Read the touchpad*/
void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data) {
uint16_t x, y;
if (tft.getTouch(&x, &y)) {
data->state = LV_INDEV_STATE_PR;
data->point.x = x;
data->point.y = y;
} else {
data->state = LV_INDEV_STATE_REL;
}
}
void setup() {
lv_init();
Serial.begin(115200);
initDisplay();
lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * 10);
/*Initialize the display*/
static lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
/*Change the following line to your display resolution*/
disp_drv.hor_res = screenWidth;
disp_drv.ver_res = screenHeight;
disp_drv.flush_cb = my_disp_flush;
disp_drv.draw_buf = &draw_buf;
lv_disp_drv_register(&disp_drv);
/*Initialize the (dummy) input device driver*/
static lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = my_touchpad_read;
lv_indev_drv_register(&indev_drv);
ui_init();
xTaskCreate(b_task,
"b_task",
12000,
NULL,
3,
NULL);
}
void loop() {
lv_timer_handler();
delay(100);
}
void initDisplay() {
tft.begin();
tft.setRotation(1);
tft.setBrightness(255);
tft.fillScreen(TFT_BLACK);
}
void b_task(void *pvParameters) {
while (1) {
vTaskDelay(100 / portTICK_PERIOD_MS);
}
}