Hi,
I used SquarelineStudio to make a UI,
basically something like last time, just more prettier.
For now 2 Screens, one Welcome screen, and main screen gauge.
I'm facing a bit of issues when I combine Elmduino Bluetooth serial library with my UI code.
My firs issue was I didn't had enough space on my ESP32 so I disabled the OTA partition.
After that I could successfully upload the code onto the ESP32
But when I added the Elmduino code I just get a black screen, my welcome screen doesn't appear nor my main screen.
On Serial monitor I get this message
rst:0x3 (SW_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:1184
load:0x40078000,len:13260
load:0x40080400,len:3028
entry 0x400805e4
This would be my UI code with Elmduino
#include <lvgl.h>
#include <TFT_eSPI.h>
#include <ui.h>
#include "BluetoothSerial.h"
#include "ELMduino.h"
BluetoothSerial SerialBT;
#define ELM_PORT SerialBT
#define DEBUG_PORT Serial
ELM327 myELM327;
uint32_t rpm = 0;
extern lv_obj_t *ui_Arc2;
extern lv_obj_t *ui_Temp;
static const uint16_t screenWidth = 320;
static const uint16_t screenHeight = 240;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[ screenWidth * screenHeight / 10 ];
TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight);
#if LV_USE_LOG != 0
void my_print(const char * buf) {
Serial.printf(buf);
Serial.flush();
}
#endif
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.pushColors((uint16_t *)&color_p->full, w * h, true);
tft.endWrite();
lv_disp_flush_ready(disp);
}
void my_touchpad_read(lv_indev_drv_t * indev_driver, lv_indev_data_t * data) {
uint16_t touchX = 0, touchY = 0;
bool touched = false; // Modify this to getTouch() function from your TFT library
if (!touched) {
data->state = LV_INDEV_STATE_REL;
} else {
data->state = LV_INDEV_STATE_PR;
data->point.x = touchX;
data->point.y = touchY;
Serial.print("Data x ");
Serial.println(touchX);
Serial.print("Data y ");
Serial.println(touchY);
}
}
void setup() {
Serial.begin(115200);
String LVGL_Arduino = "Hello Arduino! ";
LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
Serial.println(LVGL_Arduino);
Serial.println("I am LVGL_Arduino");
lv_init();
#if LV_USE_LOG != 0
lv_log_register_print_cb(my_print);
#endif
tft.begin();
tft.setRotation(3);
lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * screenHeight / 10);
static lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
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);
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();
SerialBT.setPin("1234");
ELM_PORT.begin("ArduHUD", true);
if (!ELM_PORT.connect("OBDII")) {
DEBUG_PORT.println("Couldn't connect to OBD scanner - Phase 1");
while (1);
}
if (!myELM327.begin(ELM_PORT, true, 2000)) {
Serial.println("Couldn't connect to OBD scanner - Phase 2");
while (1);
}
Serial.println("Connected to ELM327");
}
void loop() {
lv_timer_handler();
delay(15);
float tempRPM = myELM327.rpm();
if (myELM327.nb_rx_state == ELM_SUCCESS) {
rpm = (uint32_t)tempRPM;
Serial.print("RPM: ");
Serial.println(rpm);
} else if (myELM327.nb_rx_state != ELM_GETTING_MSG) {
myELM327.printError();
}
}
Does someone know what is the issue?
