Thanks very much for the thorough reply, @ESP_Angus, and for clarifying.

It would be helpful to add a note to the Docs to mention that for binaries meant for OTA to a device with encryption-enabled-in-the-bootloader, one should build the binary with flash encryption support enabled in sdkconfig ...

Hello,

Could someone please answer #3 from above? Perhaps @ESP_Angus?

3. For production devices deployed with a partition setup of:
bootloader [ flash encryption enabled]
factory [ flash encryption enabled]
ota_0 [empty]
ota_1 [empty]
When I build the binaries to be flashed via OTA into ota_0 or ...

Hello,

I am using an ESP-WROOM-32 on a custom PCB in low RSSI conditions (e.g. RSSI shows -70 to -90 dBm) and the device has difficulty maintaining a stable wifi connection to the access point. Are there configuration/software changes to the WiFi configuration I can make to increase the longevity ...

Thanks very much, Jakobsen!

Would you happen to know if there is a way to set/force the esp-idf bluetooth module to output mono-channel in the bt_app_a2d_data_cb( ) callback instead of dual channel? Or a way to force the bluetooth source device to output mono-channel?

Is the source code available for the speech recognition functions in esp-adf\examples\speech_recognition\asr\main? (perhaps for esp-adf\components\esp-adf-libs\esp_sr\lib\libesp_wakenet.a)?

In the Bluetooth A2DP sink demo data callback at https://github.com/espressif/esp-idf/blob/58df1d93bc17c74499d58e05390af9c309192a5c/examples/bluetooth/a2dp_sink/main/bt_app_av.c#L70-L77:

void bt_app_a2d_data_cb(const uint8_t *data, uint32_t len)
{
size_t bytes_written;
i2s_write(0, data, len ...

Thanks very much, WiFive.

Thanks, WiFive. Since duty is a uint32_t, why are there fractional bits?

Hello,

Why is the left shift by 4 of duty necessary in the ledc_set_duty( ) function in esp-idf\components\driver\ledc.c? Doesn't the left shift remove the most significant 4 bits, not the least significant four bits?

esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32 ...

Thanks very much, ESP_Angus! To follow-on:

1. If FLASH_CRYPT_CNT is write protected then no more serial flashes with plaintext are possible (if you keep a copy of the flash encryption key, you can still flash pre-encrypted images)

This only works if I pre-generate the flash encryption key ( https ...