[ESP32-s2] Crash when scanning I2C #5636

TD-er · 2021-09-06T08:51:58Z

Hardware:

Board: ?ESP32 Dev Module? ?node32? ?ttgo_lora?
Core Installation version: ?1.0.0? ?1.0.1-rc4? ?1.0.1? ?1.0.1-git? ?1.0.2? ?1.0.3?
IDE name: ?Arduino IDE? ?Platform.io? ?IDF component?
Flash Frequency: ?40Mhz?
PSRAM enabled: ?no? ?yes?
Upload Speed: ?115200?
Computer OS: ?Windows 10? ?Mac OSX? ?Ubuntu?

Description:

When scanning the I2C bus, the ESP32-S2 immediately crashes.

The crash suggests the pins are the same, but that's not how I set them.
The I2C pins are set via Wire.begin and not via the setPins call, since I have no explicit differences between ESP8266 and ESP32 code for I2C.

It crashes on line 1855: (i2c_master_stop)

arduino-esp32/cores/esp32/esp32-hal-i2c.c

Lines 1846 to 1859 in 92ce408

    
           i2c_err_t i2cWrite(i2c_t * i2c, uint16_t address, uint8_t* buff, uint16_t size, bool sendStop, uint16_t timeOutMillis){ 
        
               esp_err_t ret = ESP_OK; 
        
               i2c_cmd_handle_t cmd = i2c_cmd_link_create(); 
        
               i2c_master_start(cmd); 
        
               i2c_master_write_byte(cmd, (address << 1) | I2C_MASTER_WRITE, ACK_CHECK_EN); 
        
               if(size){ 
        
                   i2c_master_write(cmd, buff, size, ACK_CHECK_EN); 
        
               } 
        
               //if send stop? 
        
               i2c_master_stop(cmd); 
        
               ret = i2c_master_cmd_begin(i2c->num, cmd, timeOutMillis / portTICK_RATE_MS); 
        
               i2c_cmd_link_delete(cmd); 
        
               return ret; 
        
           }

The scanning procedure is as basic as it gets:
https://github.com/letscontrolit/ESPEasy/blob/a27b6a6fc1e50861b52c70bbf361f9ccc6c9587f/src/src/WebServer/I2C_Scanner.cpp#L305-L365

N.B. It crashes when scanning with and without any I2C device connected.
When connecting an I2C device, like an OLED display, it does work fine. So it is just the scanning which causes issues.

Debug Messages:

E (89928) i2c: i2c_set_pin(860): scl and sda gpio numbers are the same
Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.

Core  0 register dump:
PC      : 0x4010641e  PS      : 0x00060f30  A0      : 0x80083080  A1      : 0x3ffd3290
A2      : 0x00000000  A3      : 0x00000002  A4      : 0x3ffc5e5a  A5      : 0x00000000  
A6      : 0x3ffd85f4  A7      : 0x00000032  A8      : 0x8010641e  A9      : 0x3ffd3250  
A10     : 0x00000000  A11     : 0x00000002  A12     : 0x00000900  A13     : 0x00000000
A14     : 0x00001800  A15     : 0x00000000  SAR     : 0x00000016  EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000  LBEG    : 0x00000900  LEND    : 0x00000000  LCOUNT  : 0x40028855  


Backtrace:0x4010641b:0x3ffd32900x4008307d:0x3ffd32b0 0x40083191:0x3ffd32d0 0x400f12a5:0x3ffd32f0 0x40101553:0x3ffd3360 0x40194f45:0x3ffd33a0 0x4008b59e:0x3ffd33c0 0x4008d5be:0x3ffd3400 0x4008d6e7:0x3ffd3470 0x400cb4a6:0x3ffd34c0 0x400cb791:0x3ffd3500 0x400a0bfb:0x3ffd3540 0x4010843c:0x3ffd3560 
  #0  0x4010641b:0x3ffd32900 in i2cWrite at C:/Users/gijsn/.platformio/packages/framework-arduinoespressif32/cores/esp32/esp32-hal-i2c.c:1855




ELF file SHA256: 0000000000000000

Rebooting...
ESP-ROM:esp32s2-rc4-20191025
Build:Oct 25 2019
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x40026ad0
SPIWP:0xee
mode:DOUT, clock div:1
load:0x3ffe6100,len:0x7c
load:0x4004c000,len:0x7e4
load:0x40050000,len:0x2598
entry 0x4004c15c

The text was updated successfully, but these errors were encountered:

chegewara · 2021-09-06T08:55:27Z

E (89928) i2c: i2c_set_pin(860): scl and sda gpio numbers are the same
@TD-er any idea what that means?

TD-er · 2021-09-06T08:58:50Z

E (89928) i2c: i2c_set_pin(860): scl and sda gpio numbers are the same
@TD-er any idea what that means?

Well actually no, as I'm sure I don't set the same pins.
Also I cannot find the error in the code, so it is hard to see why it gives this error.

I just read through this issue, and there seem some similarities, at least the crashing is mentioned when scanning.

chegewara · 2021-09-06T09:02:39Z

Not even close, but what i know.

TD-er · 2021-09-06T09:04:00Z

Not even close, but what i know.

Care to elaborate?
You mean the linked issue is not even close?

TD-er · 2021-09-06T09:30:15Z

Just updated the opening post, as the scanning seems to be the only issue here. When connecting an I2C device like an OLED display, it does seem to work just fine.
So this does prove the I2C pins are correct.

chegewara · 2021-09-06T09:34:00Z

In that case log message is stupid, but the issue you found seems to be already fixed in your code:
#5470 (comment)

    if(size) 
        i2c_master_write(cmd, buff, size, ACK_CHECK_EN);

Maybe there is something else we didnt find yet.

TD-er · 2021-09-06T09:37:38Z

Yep, I double checked and your fix is already present in the code I compiled.

TD-er · 2021-09-06T09:57:26Z

OK, I changed my code to include the frequency at Wire.begin and now it does show up the connected I2C device.
Also I don't call Wire.setClock anymore now. (for ESP32 code)

See: espressif/arduino-esp32#5636

SuGlider · 2021-09-06T12:48:18Z

@TD-er - i2c is currently been refactored to be based on IDF in order to support ESP32, ESP32-S2 and ESP32-C3.
This issue and some other problems shall be solved in Arduino Core 2.0.1 release.

TD-er · 2021-09-06T12:52:45Z

@SuGlider
While you're at it, please also incorporate the clock stretch limit, as that's really being missed.

Do you have an estimate on when this refactoring may be done?

SuGlider · 2021-09-06T16:55:47Z

@TD-er , yes, sure!
Thanks for taking time to debug and to find a work around for the issue!

SuGlider · 2021-09-14T00:42:36Z

@TD-er I just submitted a PR #5664 that shall fix the issue you reported.
Could you please apply it to your environment and verify if it solves this issue?
Thanks.

TD-er · 2021-09-16T15:20:07Z

@SuGlider I manually replaced the 4 files in your PR but it doesn't even compile (for ESP32-s2) with lots and lots of errors (mainly not recognized types, so probably some other changes elsewhere too)

Then I tried to set PlatformIO to use your branch as platform:

platform                  = https://github.com/SuGlider/arduino-esp32.git#i2c-refactoring
platform_packages         = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/424/framework-arduinoespressif32-master-cdcf92440.tar.gz
build_flags               = -DESP32_STAGE

But that doesn't work either:

Executing task in folder ESPEasy: C:\Users\gijsn\.platformio\penv\Scripts\platformio.exe run --target clean --environment custom_ESP32s2_4M316k <

Processing custom_ESP32s2_4M316k (board: esp32-s2-saola-1; framework: arduino; platform: https://github.com/SuGlider/arduino-esp32.git#i2c-refactoring)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Platform Manager: Installing git+https://github.com/SuGlider/arduino-esp32.git#i2c-refactoring
git version 2.28.0.windows.1
Cloning into 'C:\Users\gijsn\.platformio\.cache\tmp\pkg-installing-87zu1o39'...
remote: Enumerating objects: 4211, done.
remote: Counting objects: 100% (4211/4211), done.
remote: Compressing objects: 100% (2876/2876), done.
remote: Total 4211 (delta 1103), reused 2628 (delta 848), pack-reused 0 eceiving objects:  99% (4169/4211), 109.14 MiB | 13.83 MiB/s
Receiving objects: 100% (4211/4211), 110.99 MiB | 12.82 MiB/s, done.
Resolving deltas: 100% (1103/1103), done.
Updating files: 100% (6564/6564), done.
Error: Could not find one of 'platform.json' manifest files in the package
The terminal process "C:\Users\gijsn\.platformio\penv\Scripts\platformio.exe 'run', '--target', 'clean', '--environment', 'custom_ESP32s2_4M316k'" terminated with exit code: 1.

Terminal will be reused by tasks, press any key to close it.

I'm always having these issues where I try to build with changes in the core libraries like this one where it just doesn't work.
Really frustrating.

SuGlider · 2021-09-16T15:24:22Z

Did you update to Arduino Core 2.0.0 before replacing those 4 files?

SuGlider · 2021-09-16T15:25:57Z

Check this. It may help you:
#5470 (comment)

TD-er · 2021-09-16T16:09:51Z

Did you update to Arduino Core 2.0.0 before replacing those 4 files?

I honestly don't know, as I am using PlatformIO, with platform_packages collected by @Jason2866

The platformio packages:

[core_esp32_3_3_2]
platform                  = https://github.com/platformio/platform-espressif32.git#feature/arduino-idf-master
platform_packages         = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/424/framework-arduinoespressif32-master-cdcf92440.tar.gz
build_flags               = -DESP32_STAGE

The framework "version" is a bit unclear as it states "0.0.0"

CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/esp32-s2-saola-1.html
PLATFORM: Espressif 32 (3.3.1+sha.33ff413) > Espressif ESP32-S2-Saola-1
HARDWARE: ESP32S2 240MHz, 320KB RAM, 1.81MB Flash
DEBUG: Current (esp-prog) External (esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES:
 - framework-arduinoespressif32 0.0.0
 - tool-esptoolpy 1.30100.210531 (3.1.0)
 - toolchain-esp32s2ulp 1.22851.191205 (2.28.51)
 - toolchain-riscv32-esp 8.4.0+2021r1
 - toolchain-xtensa-esp32s2 8.4.0+2021r1

Regarding ESP32, I completely lost track of which version we're now on as it is a gathered set of toolkits just to be able to build some ESP32-S2 builds that seem to boot after a rebuild.

It looks like it is based on platform-espressif32 version 3.3.1, which dates from before arduino-esp32 2.0.0 was tagged, so I guess it may not be the "2.0.0" right now.

Jason2866 · 2021-09-16T16:17:21Z

@TD-er the build you use is at the commit of core 2.0.0
EDIT:
I just made a actual build with which you can use with Platfromio

platform_packages         = framework-arduinoespressif32 @ https://github.com/Jason2866/arduino-esp32/releases/download/v.2.0-post/framework-arduinoespressif32_i2c.zip

Does compile for me without any error with the PR and Tasmota works. I2C not yet tried
@SuGlider will give you a update if i have connected a i2c device

Jason2866 · 2021-09-16T17:10:44Z

@SuGlider @TD-er First test looks good. A connected Sensor BME280 does work.

TD-er · 2021-09-16T18:39:48Z

Sadly, doesn't compile for the ESP32-S2:

CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/esp32-s2-saola-1.html
PLATFORM: Espressif 32 (3.3.2) > Espressif ESP32-S2-Saola-1
HARDWARE: ESP32S2 240MHz, 320KB RAM, 1.81MB Flash
DEBUG: Current (esp-prog) External (esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES:
 - framework-arduinoespressif32 0.0.0
 - tool-esptoolpy 1.30100.210531 (3.1.0)
 - toolchain-esp32s2ulp 1.22851.191205 (2.28.51) 
 - toolchain-riscv-esp 1.80400.0 (8.4.0)
 - toolchain-xtensa32s2 1.80400.210211 (8.4.0)
Converting ESPEasy.ino
Error: This board doesn't support arduino framework!

[core_esp32_3_3_2]
platform                  = https://github.com/platformio/platform-espressif32.git#feature/arduino-idf-master
platform_packages         = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/424/framework-arduinoespressif32-master-cdcf92440.tar.gz
build_flags               = -DESP32_STAGE

[esp32_common]
extends                   = common, core_esp32_3_3_2
lib_deps                  = td-er/ESPeasySerial @ 2.0.6, adafruit/Adafruit ILI9341 @ ^1.5.6, Adafruit GFX Library, LOLIN_EPD, Adafruit BusIO, VL53L0X @ 1.3.0, SparkFun VL53L1X 4m Laser Distance Sensor @ 1.2.9, td-er/SparkFun MAX1704x Fuel Gauge Arduino Library @ ^1.0.1
lib_ignore                = ${esp32_always.lib_ignore}, ESP32_ping, IRremoteESP8266, HeatpumpIR
board_build.f_flash       = 80000000L
board_build.flash_mode    = dout
board_upload.maximum_size = 1900544
board_build.partitions    = esp32_partition_app1810k_spiffs316k.csv
extra_scripts             = post:tools/pio/post_esp32.py
                            ${extra_scripts_default.extra_scripts}
build_unflags             = -Wall
build_flags               = ${core_esp32_3_3_2.build_flags} 
                            ${mqtt_flags.build_flags} 
                            -DCONFIG_FREERTOS_ASSERT_DISABLE
                            -DCONFIG_LWIP_ESP_GRATUITOUS_ARP
                            -fno-strict-aliasing
                            -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_NONE
monitor_filters           = esp32_exception_decoder

; ESP32-S2
[env:custom_ESP32s2_4M316k]
extends                   = esp32_common
build_flags               = ${esp32_common.build_flags} 
                            -DPLUGIN_BUILD_CUSTOM
                            -DESP32S2
board                     = esp32-s2-saola-1
extra_scripts             = ${esp32_common.extra_scripts}
                            pre:tools/pio/pre_custom_esp32.py
platform                  = ${core_esp32_stage.platform}
platform_packages         = ${core_esp32_stage.platform_packages}

TD-er · 2021-09-16T18:58:12Z

Changed the board to this:

board                     = esp32s2

With an error at linking:

Linking .pio\build\custom_ESP32s2_4M316k\ESP_Easy_mega_20210916_custom_ESP32s2_4M316k.elf
c:/users/gijsn/.platformio/packages/toolchain-xtensa32s2/bin/../lib/gcc/xtensa-esp32s2-elf/8.4.0/../../../../xtensa-esp32s2-elf/bin/ld.exe: final link failed: bad value
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\custom_ESP32s2_4M316k\ESP_Easy_mega_20210916_custom_ESP32s2_4M316k.elf] Error 1

Edit:
Reverted the platform to:

platform                  = https://github.com/platformio/platform-espressif32.git#feature/arduino-idf-master

Now it seems to start building using the esp32-s2-soala-1 board, but still the same linker error.
Even cleared all files in the .pio folder and cleared the .platformio folder in C:\Users....platformio and rebuilt.
But nope, not working.

Jason2866 · 2021-09-16T19:57:21Z

Using wrong xtensa-esp32s2-elf/8.4.0 version of the compiler/toolchain. The newest is needed. Your platformio setup is screwed. Easy solution. Delete the whole hidden folder .platformio. All needed will rebuilded (downloaded)

The platform 'https://github.com/platformio/platform-espressif32.git#feature/arduino-idf-master' has been successfully installed!
The rest of the packages will be installed later depending on your build environment.
Tool Manager: Installing espressif/toolchain-xtensa-esp32s2 @ 8.4.0+2021r1
Downloading...
Unpacking...
Tool Manager: toolchain-xtensa-esp32s2 @ 8.4.0+2021r1 has been installed!
Tool Manager: Installing espressif/toolchain-riscv32-esp @ 8.4.0+2021r1
Downloading...

HARDWARE: ESP32S2 240MHz, 320KB RAM, 4MB Flash
DEBUG: Current (esp-prog) External (esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES: 
 - framework-arduinoespressif32 0.0.0 
 - tool-esptoolpy 1.30100.210531 (3.1.0) 
 - tool-mklittlefs 1.203.210628 (2.3) 
 - toolchain-esp32s2ulp 1.22851.191205 (2.28.51) 
 - toolchain-riscv32-esp 8.4.0+2021r1 
 - toolchain-xtensa-esp32s2 8.4.0+2021r1
Converting tasmota.ino

TD-er · 2021-09-16T20:41:15Z

Was the rest of my PIO platform selection OK?

Oh and more importantly, will this mess up builds I make using the older platforms?

Jason2866 · 2021-09-16T20:57:36Z

Yes, last setup is okay. I does not mess up older builds for me. I will add a package.json with a unique version number. I think the problem is caused from the 0.0.0 version number

TD-er · 2021-09-16T21:07:01Z

Right now I have it running on the S2 and it seems to run fine.
Still have to "revert" my changes to prevent the crash I had before, but I guess my changes were a good change anyway as the setClock now has a comment that it should be called before begin() anyway.

Jason2866 · 2021-09-16T21:16:26Z

Added a version number. If you delete again you should get now 2.0.0+i2cfix

TD-er · 2021-09-16T21:19:28Z

Just a remark about the code changes, I will post them in the respective PR. : #5664 (comment)

See: espressif/arduino-esp32#5636

me-no-dev · 2021-09-20T08:48:45Z

Hi could you please re-test with this new PR: #5683

TD-er · 2021-09-20T16:59:43Z

@Jason2866 Can you make a new PIO platform_package ?

Jason2866 · 2021-09-20T18:14:08Z

@TD-er Here you are https://github.com/Jason2866/arduino-esp32/releases/download/v.2.0.0-PR5683/framework-arduinoespressif32_PR5683.zip

Jason2866 · 2021-09-20T18:20:03Z

Does work with Tasmota. The SuGlider version did run 4 days nonstop with Tasmota until now without issues.

TD-er · 2021-09-20T21:21:11Z

@Jason2866 Thanks, will try to build it with ESPEasy.
The SuGlider version did indeed run well without any issues.
But I did not try to access it from multiple threads.

TD-er added a commit to TD-er/ESPEasy that referenced this issue Sep 6, 2021

[ESP32-s2] Fix crash when scanning I2C bus

0a5b435

See: espressif/arduino-esp32#5636

SuGlider self-assigned this Sep 6, 2021

VojtechBartoska added the Chip: ESP32-S2 Issue is related to support of ESP32-S2 Chip label Sep 6, 2021

SuGlider mentioned this issue Sep 14, 2021

Implements I2C Wire Refactoring on top of IDF #5664

Closed

TD-er added a commit to TD-er/ESPEasy that referenced this issue Sep 16, 2021

[ESP32-S2] Use latest ESP32 core 2.0.0 + IDF4.4 + I2C fix

5c2fb66

See: espressif/arduino-esp32#5636

me-no-dev mentioned this issue Sep 20, 2021

Implement Thread-Safe I2C based on ESP-IDF API #5683

Merged

me-no-dev assigned me-no-dev and unassigned SuGlider Sep 20, 2021

me-no-dev closed this as completed in #5683 Oct 1, 2021

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[ESP32-s2] Crash when scanning I2C #5636

[ESP32-s2] Crash when scanning I2C #5636

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[ESP32-s2] Crash when scanning I2C #5636

[ESP32-s2] Crash when scanning I2C #5636

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Hardware:

Description:

Debug Messages:

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