This is my stake in the ground. The "state of the art" at the time I made the original posting. Bear in mind, that means I knew (still true but I'm about to investigate) nothing about partitioning and options in that area. The code:
#define USE_WIFI_MANAGER
#include <lvgl.h>
#include "Arduino_GFX_Library.h"
#include "pin_config.h"
#include "lv_conf.h"
#include <Wire.h>
#include <SPI.h>
#include <Arduino.h>
#include "SensorPCF85063.hpp"
#ifdef USE_WIFI_MANAGER
#include <WiFiManager.h>
#else
#include <WiFi.h>
#endif
#include <time.h>
#include "secrets.h"
#define EXAMPLE_LVGL_TICK_PERIOD_MS 2
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[LCD_WIDTH * LCD_HEIGHT / 10];
lv_obj_t *label; // Global label object
SensorPCF85063 rtc;
uint32_t lastMillis;
Arduino_DataBus *bus = new Arduino_ESP32QSPI(
LCD_CS /* CS */, LCD_SCLK /* SCK */, LCD_SDIO0 /* SDIO0 */, LCD_SDIO1 /* SDIO1 */,
LCD_SDIO2 /* SDIO2 */, LCD_SDIO3 /* SDIO3 */);
Arduino_CO5300 *gfx = new Arduino_CO5300(
bus, LCD_RESET /* RST */, 0 /* rotation */, LCD_WIDTH /* width */, LCD_HEIGHT /* height */, 6, 0, 0, 0);
#if LV_USE_LOG != 0
/* Serial debugging */
void my_print(const char *buf) {
Serial.printf(buf);
Serial.flush();
}
#endif
void example_lvgl_rounder_cb(struct _lv_disp_drv_t *disp_drv, lv_area_t *area)
{
if(area->x1 % 2 !=0)area->x1--;
if(area->y1 % 2 !=0)area->y1--;
// 变为奇数(如果是偶数就加 1)
if(area->x2 %2 ==0)area->x2++;
if(area->y2 %2 ==0)area->y2++;
}
/* 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);
#if (LV_COLOR_16_SWAP != 0)
gfx->draw16bitBeRGBBitmap(area->x1, area->y1, (uint16_t *)&color_p->full, w, h);
#else
gfx->draw16bitRGBBitmap(area->x1, area->y1, (uint16_t *)&color_p->full, w, h);
#endif
lv_disp_flush_ready(disp);
}
void example_increase_lvgl_tick(void *arg) {
/* Tell LVGL how many milliseconds has elapsed */
lv_tick_inc(EXAMPLE_LVGL_TICK_PERIOD_MS);
}
static uint8_t count = 0;
void example_increase_reboot(void *arg) {
count++;
if (count == 30) {
esp_restart();
}
}
void setup() {
struct tm timeinfo ;
Serial.begin(115200); /* prepare for possible serial debug */
while (! Serial) {} // Wait for serial connection
if (!rtc.begin(Wire, IIC_SDA, IIC_SCL)) {
Serial.println("Failed to find PCF8563 - check your wiring!");
while (1) {
delay(1000);
}
}
#ifdef USE_WIFI_MANAGER
WiFiManager wm ;
if ( ! wm.autoConnect("DennisClock")) {
Serial.println("Failed to connect before timeout.") ;
ESP.restart() ;
}
#else
/* WiFi stuff... */
Serial.println(sprintf("Connecting to WiFi %s", WIFI_SSID)) ;
WiFi.begin(WIFI_SSID, WIFI_PASS) ;
while (WiFi.status() != WL_CONNECTED) {
delay(500) ;
Serial.print(".") ;
}
Serial.print("\nStation connected at IP address ") ;
Serial.println(WiFi.localIP()) ;
#endif
configTime(LOCALTIME_GMT_OFFSET, LOCALTIME_DST_ADJ, NTP_SERVER) ;
if (!getLocalTime(&timeinfo)) {
Serial.println("Failed to get local time.") ;
while (true) delay(1000) ;
}
/* End WiFi stuff */
rtc.setDateTime(timeinfo.tm_year, timeinfo.tm_mon+1, timeinfo.tm_mday
, timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);
gfx->begin();
gfx->setBrightness(255);
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); /* register print function for debugging */
#endif
lv_disp_draw_buf_init(&draw_buf, buf, NULL, LCD_WIDTH * LCD_HEIGHT / 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 = LCD_WIDTH;
disp_drv.ver_res = LCD_HEIGHT;
disp_drv.flush_cb = my_disp_flush;
disp_drv.rounder_cb = example_lvgl_rounder_cb;
disp_drv.draw_buf = &draw_buf;
disp_drv.sw_rotate = 1 ;
disp_drv.rotated = LV_DISP_ROT_NONE ;
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;
lv_indev_drv_register(&indev_drv);
// lv_obj_t *label = lv_label_create(lv_scr_act());
// lv_label_set_text(label, "Hello Ardino and LVGL!");
// lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);
const esp_timer_create_args_t lvgl_tick_timer_args = {
.callback = &example_increase_lvgl_tick,
.name = "lvgl_tick"
};
const esp_timer_create_args_t reboot_timer_args = {
.callback = &example_increase_reboot,
.name = "reboot"
};
esp_timer_handle_t lvgl_tick_timer = NULL;
esp_timer_create(&lvgl_tick_timer_args, &lvgl_tick_timer);
esp_timer_start_periodic(lvgl_tick_timer, EXAMPLE_LVGL_TICK_PERIOD_MS * 1000);
label = lv_label_create(lv_scr_act());
lv_label_set_text(label, "Initializing...");
lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);
}
void loop() {
int priorRotValue = -1 ;
lv_timer_handler(); /* let the GUI do its work */
delay(5);
if (millis() - lastMillis > 1000) {
lastMillis = millis();
RTC_DateTime datetime = rtc.getDateTime();
char buf[32];
#undef MONTH_NAME
#ifdef MONTH_NAME
const char *monthNames[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"} ;
/*******************************************************************************************
I get a runtime error (below) when I try to use this code.
Guru Meditation Error: Core / panic'ed (Cache disabled but cached memory region accessed).
Write back error occurred while dcache tries to write back to flash
The following backtrace may not indicate the code that caused Cache invalid access
Guru Meditation Error: Core 0 panic'ed (Unhandled debug exception).
Debug exception reason: Stack canary watchpoint triggered (IDLE0)
Core 0 register dump:
PC : 0x40056f60 PS : 0x00060536 A0 : 0x82033e56 A1 : 0x3fcbe580
A2 : 0x3fcbe590 A3 : 0x3c0fcd28 A4 : 0x00000060 A5 : 0x3fcbe590
A6 : 0x3c0d2c52 A7 : 0x3c0d2c5b A8 : 0x00000000 A9 : 0x00000001
A10 : 0x60000000 A11 : 0x0000000a A12 : 0x82033626 A13 : 0x40376cb8
A14 : 0x00000000 A15 : 0x3fcbe9b4 SAR : 0x0000000a EXCCAUSE: 0x00000001
EXCVADDR: 0x00000000 LBEG : 0x40056f5c LEND : 0x40056f72 LCOUNT : 0x00000005
Backtrace: 0x40056f5d:0x3fcbe580 0x42033e53:0x3fcbe590 0x42033bad:0x3fcbe610 0x42033bd9:0x3fcbe630 0x4203301b:0x3fcbe650 0x4202e790:0x3fcbe680 0x42033b59:0x3fcbe6a0 0x403769a1:0x3fcbe6f0 0x40376cf4:0x3fcbe710 0x00040022:0x3fcbe7d0 |<-CORRUPTED
Core 1 register dump:
PC : 0x420048ac PS : 0x00060034 A0 : 0x820c0851 A1 : 0x3fcc2250
A2 : 0x3c0e2e80 A3 : 0x3fca8704 A4 : 0x0000000c A5 : 0x3fca8770
A6 : 0x3fca8574 A7 : 0x3fca73d0 A8 : 0x00001876 A9 : 0x3fcc2230
A10 : 0x3fca8574 A11 : 0x00014d44 A12 : 0x00000000 A13 : 0x00000006
A14 : 0x3fca73d0 A15 : 0x3fca876c SAR : 0x00000020 EXCCAUSE: 0x00000007
EXCVADDR: 0x00000000 LBEG : 0x400570e8 LEND : 0x400570f3 LCOUNT : 0xffffffff
Backtrace: 0x420048a9:0x3fcc2250 0x420c084e:0x3fcc2270 0x420c0841:0x3fcc2290 0x4200563c:0x3fcc22b0 0x42022a9f:0x3fcc22d0 0x42002713:0x3fcc22f0 0x4202fcdb:0x3fcc2390 0x4037ed7a:0x3fcc23b0
ELF file SHA256: 38d9b4e65
Rebooting...
***********************************************************************/
snprintf(buf, sizeof(buf), "%s %d, %d\n%02d:%02d:%02d"
, monthNames[datetime.getMonth()]
, datetime.getDay(), datetime.getYear()
, datetime.getHour(), datetime.getMinute(), datetime.getSecond()
);
#else
snprintf(buf, sizeof(buf), "%02d/%02d/%04d\n%02d:%02d:%02d"
, datetime.getMonth()
, datetime.getDay(), datetime.getYear()
, datetime.getHour(), datetime.getMinute(), datetime.getSecond()
);
#endif
// Update label with current time
lv_label_set_text(label, buf);
lv_obj_set_style_text_font(label, &lv_font_montserrat_48, LV_PART_MAIN);
lv_disp_rot_t rotValue = LV_DISP_ROT_270 ;
if (rotValue != priorRotValue) {
priorRotValue = rotValue ;
lv_disp_set_rotation(NULL, (lv_disp_rot_t) rotValue) ;
}
}
delay(20);
}
The file "secrets.h"'
```cpp
#define WIFI_SSID "still.secret"
#define WIFI_PASS "more secret"
#define LOCALTIME_GMT_OFFSET -18000
#define LOCALTIME_DST_ADJ 3600
#define NTP_SERVER "pool.ntp.org"
The result:
Sketch uses 1387792 bytes (105%) of program storage space. Maximum is 1310720 bytes.
Global variables use 139468 bytes (42%) of dynamic memory, leaving 188212 bytes for local variables. Maximum is 327680 bytes.
Sketch too big; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing it.
text section exceeds available space in board
Compilation error: text section exceeds available space in board
Now I've received a good deal of advice above, which I am about to pore through. The offhand comments in the above I will try (beyond this statement) to ignore with thick skin. Probably attributable to a bad day. Thank you, thank you to those of you who have provided and offered help.
Some of what I've read ("default partition setting ... is 3MB", for example) don't seem to apply in my case, and some things I don't understand (e.g. same post: "Make sure you have selected AMOLED...") but give me some time - I will try to make sense of all your help.
Again, I truly appreciate the attention. Now let's see if I can learn sump'n.
