No serial with Heltec WSL3 Companion USB serial firmware

[syn-bit]

Hi,

I'm setting up a Heltec Wireless Stick Lite V3 (Heltec WSL3) with Companion serial USB firmware. But I do not get serial output. I tried the nightly build too, as well as v1.9.1 and v1.8.1. None work. I have two of the heltec devices, they both give the same unresponsiveness. I also tried two different USB cables (both tested for datalines) and two laptops (Linux and MacOS).

Installing the repeater firmware or room-server firmware do give a serial connection on the same two heltec devices.

I suspect a bug in the Companion USB firmware for the Heltec WSL3

Could this be investigated?

[syn-bit]

After a while the serial console does give one flood of errors:

[ 19136][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error -1
[ 19146][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19153][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19159][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19166][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19172][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19179][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19185][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19192][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19199][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19205][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19212][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19218][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19225][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19231][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19238][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19244][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19251][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19257][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19264][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19270][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19277][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19284][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19291][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19298][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19305][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19312][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19330][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19338][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19345][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19352][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19359][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19366][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19372][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19379][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19386][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19393][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19400][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19407][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19414][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19420][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19428][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1
[ 19435][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1

[IoTThinks]

The error flood is due to bad library from sensor part.
Even if no sensor is attached.

I'm going to push a fix for that issue.

[muschaw]

Thank you @IoTThinks for looking into this!

Not sure if this is relevant for your proposed fix -
I'm also getting a similar situation (I do get serial if I hard reboot after a flash)
I get a flood of :

ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_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:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
[   903][E][Wire.cpp:499] requestFrom(): i2cWriteReadNonStop returned Error -1
[  1914][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263
[  2922][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263
[  3929][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263
[  4936][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263
[  5943][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

on an older LilyGo LoRa32 V2.1_1.6 board.

[IoTThinks]

@muschaw I fixed it here
#1282

In MeshCore > platform.ini, there are two faulty libraries:

-D ENV_INCLUDE_LPS22HB=1 ; Crash Wire connection => I added a local LPS22HB to fix this issue.
-D ENV_INCLUDE_VL53L0X=1 ; Spam "[Wire.cpp:513] requestFrom(): i2cRead returned Error -1" => i2c_prode will mitigate this as most people do not use VL53L0X