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Unable to update ESP32's firmware via micro USB when an I2C device is connected to SoftRF LoRa I2C port #2

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lyusupov opened this issue Jun 6, 2018 · 0 comments
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Unable to update ESP32's firmware via micro USB when an I2C device is connected to SoftRF LoRa I2C port #2

lyusupov opened this issue Jun 6, 2018 · 0 comments
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lyusupov commented Jun 6, 2018

PCB revision affected: 1.1

Reason

In accordance with ESP32 datasheet, GPIO2 is one of boot-time sensitive "strapping" pins.

Workaround

Detach the I2C device from SoftRF LoRa I2C port prior to initial SoftRF firmware upload (or repair).

Use Web or OTA upload method for regular maintenance firmware updates.
@lyusupov lyusupov added the bug Something isn't working label Jun 6, 2018
@lyusupov lyusupov self-assigned this Jun 6, 2018
@lyusupov lyusupov closed this as completed Jun 6, 2018
lyusupov referenced this issue in lyusupov/SoftRF Jul 20, 2018
@lyusupov
Intermediate update of ESP32 firmware binaries (RC4+). Major improvem…
985b005 
…ents: most recent Core, CN 470 MHz band support. [skip ci]
@lyusupov lyusupov mentioned this issue Sep 11, 2018
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