today I face very similar issue for my custom board, it use ESP32-WROOM-32D. My board was running several hours sending some data over ESPNOW and at some point it restart few times and then was unable boot. As I measure EN there was 160ohm to ground, after resoldering area it drop even more to aroun...

In case of unicast then what exatcly OnDataSent mean? Is it "receiver receive message (hardware)" or "receiver receive message (hardware) and process OnDataRecv (application)"? If unicast use ACK and does not care about OnDataRecv then whats the point of ACK? For example my transmitter send stream o...

Thank you for your reply. What about scenario where I write protecting by mutex and read without mutex? Will it still work without volatile at reading assuming my variable is uint32_t memory aligned? I just write some FIFO where uint32_t store two variables uint16_t just for ensure at least atomic r...

Does xSemaphoreTake/Give() guarantee any variable to be updated in scenario of multiple core access? Or I need volatile or other things to do to ensure I will not read outdated content? uint32_t someVariable = 0; // should it be volatile? void function(){ if(Mutex && xSemaphoreTake(Mutex,portMAX_DEL...

I wrote some class to handle some SPI device, mainly it was written under non RTOS env. Now i try to adapt it to ESP32 and RTOS environment. The task 'IMU_handler' just wait for 'Notify' from interrupt and then download data from SPI, preprocess etc, everythink at 1kHz rate, currently in case 8kHz i...

Then why this work? Ofcourse this example use 2 instances of SPI class and I'm aware about that I can not use both device at the same time. I do that only beacause of I do not have easy acces to TFTs SPI pins and also unpredictable nature of SD data writing and time critical sensor disqualify them f...

Can I map 2nd sets of pintouts for VSPI bus sefely? Generally everythink work fine as long as I use TFT and SD in single task loop, or tasks at the same priority and core, in any other configuration wtd trigger and/or SD return crc errors etc. I'm just not sure can I ignore "addApbChangeCallback(): ...