ESP32 Forum

I am bare metal programming esp32 at register level (Lilygo T-CALL BLYNK v1.3) with ESP-IDF. I treat app_main() as main() function. Currently I am reading esp32 reference manual v4.7 in which I have seen FIFO register but in its description it is written that it is for RX. In the datapath of uart at start of topic, there are separate FIFOs for both Tx and Rx. My question is, where is UART Tx Fifo ? Do we have no other way to program UART Tx other than DMA ?

Any help is more than appreciated.

Regards,
Ali Tariq

Hi Ali,

Did you manage to find what address the TX buffer is located at to write into? Thanks!