Hi, With other MCU devices I have used, there is a small % failure rate when eFuses or OTP memory is programmed, and therefore there is an impact on the time taken during production in case retries are necessary for programming eFuses. I have checked the datasheet for ESP32 but cannot find relevant ...

This is an old thread but the information here is useful to me. Please could you help me check my understanding as I think the current situation has changed since the above answers. Now there is a 'esp_wifi_set_country_code' API and esp_wifi.h contains a warning to use esp_wifi_set_country_code inst...

Hi, I am starting to use static analysis in my codebase for ESP32 project, and I read the guide in the IDF docs for using `idf.py clang-check`. This depends on installing the xtensa-clang binaries, but I wonder why it is recommended to use xtensa-clang instead of the native clang-tidy? I could insta...

Thank you for your replies, that's really helpful. I will experiment with splitting my SPI transmission into two sections so that the first one stops just before I need to set the latch enable high. The reason I thought this is a hardware limitation instead of code is because I have related it to AD...

Thanks for the suggestion. I think I can try that with bit-banging. I assume the ESP32 SPI must transmit whole bytes, not just an arbitrary number of bits, so I guess I would need to bit-bang the full last byte of the transaction, with the latch low for the first 5 bits and then high for the last 3....

Thanks for your reply. It is an LED driver, several similar devices daisy-chained. I need to run SPI at 1MHz clock in order to transfer data across quickly enough through the whole daisy-chain of devices. Therefore, half a uS is enough to move the latch pulse into the wrong clock cycle. So I think w...

Hi, I am using a device which has a serial data input (uses a shift register internally), and a latch signal. I am using the ESP32 SPI controller to transmit the data and clock to the device. The latch signal is required to go high during the final 3 clock pulses of the SPI transmission (the width o...

Thanks for posting the link to the advisory from Espressif. This was the only place I could actually find it.

Do you know how these get published by Espressif? Is there some list I can subscribe to to be alerted when one of these advisories is posted? I can't see if in their website's news section.

Hi, I am developing an application using Bluetooth on ESP32, and I see in ESP-IDF it is possible to configure Bluetooth Tx power (I am using BR/EDR mode). However, the ESP-IDF functions take a minimum and maximum power. How is the transmit power determined between this minimum and maximum? I tried u...

OK, looking at that example, I think I understand that: I can set the base mac address by calling esp_base_mac_addr_set(my_chosen_mac) before the network stack is initialised, and this will be used for the session The base mac address I pass in with esp_base_mac_addr_set() is in RAM and won't affect...