PyCom red light (bricked) after trying to use I2C, no recovery working

pycom / pycom-micropython-sigfox

A fork of MicroPython with the ESP32 port customized to run on Pycom's IoT multi-network modules.

MIT License

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PyCom red light (bricked) after trying to use I2C, no recovery working #79

Closed HenkUyttenhove closed 6 years ago

HenkUyttenhove commented 6 years ago

Please include the following information when submitting a bug report:

The Pycom board you are using: WiPy2
The firmware version you are using. You can get it by executing the following Python code at the After unboxing, did an update of firmware so should be on latest
Exact steps to cause this issue from machine import I2C i2c = I2C(0, I2C.MASTER) i2c.scan()

result [32] and this is correct for a MCP23017 on hex 0x20 i2c.writeto_mem(32,0,0) Lost my serial connection Reboot device, no serial connection anymore (see lower) Tried reflash but process fails Tried bootsafe but red Led is active the whole time
Outcome message after reboot: ets Jun 8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (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:0x3fff9010,len:12 ho 0 tail 12 room 4 load:0x3fff9020,len:388 load:0x40078000,len:11584 load:0x4009fb00,len:848 entry 0x4009fc9c

Thank you!

jmarcelino commented 6 years ago

Do you have the MCP23017 still connected to the WiPy? Is so try disconnecting it or anything else you have connected and try again - simply communicating with it or doing the firmware upgrade again.

HenkUyttenhove commented 6 years ago

I have disconnected everything except USB port.

I was able however with the bridge GND-G23 to get into following situation (after pushing reboot button):

Connecting on /dev/ttyUSB0... ets Jun 8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2)) waiting for download

So it looks like I can upload the firmware but don't have a copy. Python update script not working.

jmarcelino commented 6 years ago

You can download the current firmware from https://software.pycom.io/downloads/WiPy-1.9.0.b1.tar.gz

HenkUyttenhove commented 6 years ago

I was able to update the firmware now (after different reboots) but still no luck.

I have the message on my screen: "your device was successfully updated to version 1.9.0.b1. Please remove the wire and reset the board".

But still the red led after reboot.

jmarcelino commented 6 years ago

Sounds like your Flash memory could be corrupted in some way. Did you ever try running a custom firmware? Also are you running the latest firmware update tool from https://www.pycom.io/downloads/ ? There was a new one released not so long ago.

If you do have the latest version try resetting your WiPy Flash by installing esptool (instructions at https://github.com/espressif/esptool ) , doing an _eraseflash command with it and then running the upgrade procedure once more.

To use esptool you need the GND-G23 wire in as you do for programming.

HenkUyttenhove commented 6 years ago

@jmarcelino Can you please advice on the exact line I need to write the firmware. I have found following string:

root@henk-MS-7621:/home/henk/Downloads/pyupgrade/bin#python3 esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 115200 write_flash --flash_size 4MB 0x1000 ../../WiPy/bootloader.bin 0x10000 ../../WiPy/wipy.bin 0x4000 ../../WiPy/partitions.bin

esptool.py v2.0-beta1 Connecting...........................................

A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header root@henk-MS-7621:/home/henk/Downloads/pyupgrade/bin#

HenkUyttenhove commented 6 years ago

Update: After a successful flash with above command, I get following error: rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (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:QIO, clock div:2 load:0x3fff9010,len:12 ho 0 tail 12 room 4 load:0x04720404,len:291930117

robert-hh commented 6 years ago

Die you try to erase flash before uploading the firmware again. Erasing is done with:

esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 115200 erase_flash

And of course, you have to connect G23 (also called P2 or GPIO0) to GND & reset the device before any action with esptool or the updater.

pietrushnic commented 6 years ago

I faced exactly same issues. My board was stuck at:

rst:0x1 (POWERON_RESET),boot:0x13 (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:0x3fff9010,len:12
ho 0 tail 12 room 4
load:0x3fff9020,len:388
load:0x40078000,len:11584
load:0x4009fb00,len:848
entry 0x4009fc9c

After erasing flash with esptool.py and updating again wipy started to work again.