When using the microphone and speaker example code, my unit would bootloop with the following errors (output from serial over USB):
␛[0;31mE (2852) I2S: Register I2S Interrupt error␛[0m
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.
After some investigation I was able to determine that modifications to microphone.c and speaker.c resolve my issue. I suspect that as others start to get their devices, there may be some one-offs that have this same issue.
I guess something about my unit just doesn't like using the lowest interrupt level. Not sure what other consequences of these modifications are, but they fixed my boot loop issues.
xaos11
commented
3 years ago
When using the microphone and speaker example code, my unit would bootloop with the following errors (output from serial over USB):
␛[0;31mE (2852) I2S: Register I2S Interrupt error␛[0m Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.
After some investigation I was able to determine that modifications to microphone.c and speaker.c resolve my issue. I suspect that as others start to get their devices, there may be some one-offs that have this same issue.
(.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 -> .intr_alloc_flags = ESP_INTR_FLAG_LEVEL2)
I guess something about my unit just doesn't like using the lowest interrupt level. Not sure what other consequences of these modifications are, but they fixed my boot loop issues.