Hi,
I’m having an issue with a Heltec LoRa board when flashing OpenMQTTGateway from Visual Studio Code + PlatformIO.
If I install the firmware using the official OpenMQTTGateway Web Uploader, everything works correctly and the device boots normally.
However, when I build and upload the firmware with PlatformIO, the board immediately enters a boot loop. Serial monitor output looks like this:
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:DIO, clock div:2
load:0x3fff0030,len:4640
load:0x40078000,len:15660
load:0x40080400,len:3164
entry 0x4008059c
…
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:DIO, clock div:2
load:0x3fff0030,len:4640
load:0x40078000,len:15660
load:0x40080400,len:3164
entry 0x4008059c
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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:4640
load:0x40078000,len:15660
load:0x40080400,len:3164
entry 0x4008059c
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After that, the serial monitor displays only corrupted/random characters and the board continuously resets with: rst:0x10 (RTCWDT_RTC_RESET)
What I have tested
Flashing via OpenMQTTGateway Web Uploader → works normally
Flashing the same target via PlatformIO → boot loop
Multiple re-flashes give the same result
Board is a Heltec LoRa ESP32 board v2
Questions
- Could PlatformIO be building with different ESP32 core, partition table, flash settings or PSRAM settings than the Web Uploader firmware?
- Is there a known PlatformIO environment for Heltec LoRa boards that matches the firmware distributed through the OMG Web Uploader?
- Does the serial output suggest a watchdog reset caused by wrong flash settings or an incorrect board definition?