M5stack cording -

[yukimach]

Hi, I'm trying to run the analogmeter example and hitting an error for the coreink.

divide by zero error, could this be that the size of the screen is not recognised?

---

[env:m5stack-coreink] platform = espressif32 board = m5stack-coreink framework = arduino lib_deps = m5stack/M5Core-Ink@^0.0.7 m5stack/M5GFX@^0.1.10 monitor_speed =115200 monitor_filters = esp32_exception_decoder

--- Error rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT) configsip: 188777542, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:1184 load:0x40078000,len:13104 load:0x40080400,len:3036 entry 0x400805e4 Guru Meditation Error: Core 1 panic'ed (IntegerDivideByZero). Exception was unhandled.

Core 1 register dump: PC : 0x400d246a PS : 0x00060830 A0 : 0x800dcb39 A1 : 0x3ffb27f0
A2 : 0x3ffc2564 A3 : 0x3ffc2560 A4 : 0x3ffc2584 A5 : 0x00000000
A6 : 0x3ffbdb68 A7 : 0x00000000 A8 : 0x800d2463 A9 : 0x3ffb27a0
A10 : 0x00000000 A11 : 0x00000000 A12 : 0x00000000 A13 : 0x3ffc255c
A14 : 0x3ffc2584 A15 : 0x00000015 SAR : 0x00000006 EXCCAUSE: 0x00000006
EXCVADDR: 0x00000000 LBEG : 0x4008486d LEND : 0x40084875 LCOUNT : 0x00000027

Backtrace: 0x400d2467:0x3ffb27f0 0x400dcb36:0x3ffb2820

0 0x400d2467:0x3ffb27f0 in lgfx::v1::LGFXBase::width() const at .pio/libdeps/m5stack-coreink/M5GFX/src/lgfx/v1/LGFXBase.hpp:284

  (inlined by) setup() at src/main.ino:160

1 0x400dcb36:0x3ffb2820 in loopTask(void*) at /.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:42

[lovyan03]

Hello, @yukimach I have tried it here and it works fine with no problems.

I have a puzzling point in your ini. Why do you depend on the Core-Ink library? Have you made any changes to the source code? Have you removed the M5GFX init (begin) ?

[yukimach]

I removed the core-ink library now to avoid confusion. the core-ink library was working. Espressif platform 5.3.0. (I initially tried with 6 but also same problem). I've reloaded M5GFX a few times also to make sure.

M5GFX display; display.begin(); has not been removed from the main file.

---

[env:m5stack-coreink] platform = espressif32 board = m5stack-coreink framework = arduino lib_deps =

m5stack/M5GFX@^0.1.10

monitor_speed =115200 monitor_filters = esp32_exception_decoder

I copy paste the code for analogmeter example, no modification.

[lovyan03]

Hmmm,,, To check the situation, please run the following program with debug logging enabled.

#include <Arduino.h>
#include <M5GFX.h>
M5GFX display;

void setup(void)
{
  delay(100);
  display.begin();
  printf("w:%d h:%d\n", display.width(), display.height());
}

void loop(void)
{
  display.fillCircle(rand()%display.width(), rand()%display.height(), 16, rand());
  delay(4000);
}

Check the output of the serial monitor to see if M5GFX detects CoreInk.

rst:0x1 (POWERON_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
configsip: 188777542, 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:1344
load:0x40078000,len:13516
load:0x40080400,len:3604
entry 0x400805f0
[��mum����2-hal-cpu.c:214] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
[   144][I][M5GFX.cpp:522] init_impl(): [M5GFX] [Autodetect] load from NVS : board:6
[   156][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:70 = 00f00000
[   157][I][M5GFX.cpp:682] autodetect(): [M5GFX] [Autodetect] M5StackCoreInk
w:200 h:200

[yukimach]

Thanks! Yes I think it's this, I was trying to figure out how the library recognizes the board and dimensions, it looks like it's getting a 0 for width and height. How do I get Autodetect to work if it's not?

w:0 h:0 Guru Meditation Error: Core 1 panic'ed (IntegerDivideByZero). Exception was unhandled.

Core 1 register dump: PC : 0x400d1b16 PS : 0x00060a30 A0 : 0x800db21c A1 : 0x3ffb2800
A2 : 0x3ffc25c0 A3 : 0x00000000 A4 : 0x00000000 A5 : 0x00000004
A6 : 0x3ffb8874 A7 : 0x80000001 A8 : 0x800d1b0e A9 : 0x3ffb27e0
A10 : 0x5851f42d A11 : 0x3ffb88d4 A12 : 0x00000000 A13 : 0x00000000
A14 : 0xffffffff A15 : 0x00000001 SAR : 0x00000017 EXCCAUSE: 0x00000006
EXCVADDR: 0x00000000 LBEG : 0x4008488d LEND : 0x40084895 LCOUNT : 0x00000027

Backtrace: 0x400d1b13:0x3ffb2800 0x400db219:0x3ffb2820

0 0x400d1b13:0x3ffb2800 in lgfx::v1::LGFXBase::width() const at .pio/libdeps/m5stack-coreink/M5GFX/src/lgfx/v1/LGFXBase.hpp:284

  (inlined by) loop() at src/main.ino:14

1 0x400db219:0x3ffb2820 in loopTask(void*) at /.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:50

[lovyan03]

Please enable debug logging.

platformio.ini

build_flags = -DCORE_DEBUG_LEVEL=5

And please post all logs prior to the error.

[lovyan03]

If all log text is filled with error logs, empty the contents of the loop function and execute it.

[yukimach]

rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT) configsip: 188777542, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:1184 load:0x40078000,len:13104 load:0x40080400,len:3036 entry 0x400805e4 [ 17][D][esp32-hal-cpu.c:244] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz [ 150][I][M5GFX.cpp:522] init_impl(): [M5GFX] [Autodetect] load from NVS : board:0 [ 166][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:70 = 00f00100 [ 180][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:04 = 00000000 [ 195][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:70 = 00f00100 [ 209][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:04 = 00000000 [ 224][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:70 = 00f00100 [ 238][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:04 = 00000000 [ 252][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:70 = 00f00100 [ 266][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:04 = 00000000 [ 281][D][M5GFX.cpp:484] _read_panel_id(): [M5GFX] [Autodetect] read cmd:70 = 00f00100 [ 282][I][M5GFX.cpp:589] init_impl(): [M5GFX] [Autodetect] save to NVS : board:0 w:0 h:0 Guru Meditation Error: Core 1 panic'ed (IntegerDivideByZero). Exception was unhandled.

[lovyan03]

I apologies. I have found the cause of the problem and will correct it. Please wait a moment.

Have you recently purchased a CoreInk? It appears that a newer revision of the driver IC is being used than the one I own. As a result, there is a discrepancy in the determination results and the detection is failing.

I would change the decision formula so that the new driver IC does not cause an error.

[yukimach]

Amazing, thank you so much. Yes I just purchased it last month I think.

[lovyan03]

I have now updated the 'develop' branch. Please check the operation with the develop version instead of the release version.

platformio.ini

lib_deps = https://github.com/m5stack/M5GFX.git#develop

If there are no problems, it will be included in the next update.

[yukimach]

I manually changed it on my end and I confirm the fix works on my board now. The revision has yet to be released for platformio.

[yukimach]

I confirm the develop branch also runs on my board.