Have you made any changes in menuconfig ?
Like changing the CPU speed from default 160mhz to 240 ?
There are allot of other options in there such as placing uart functions into IRAM.

Well....I thank you and all for your time. I tried this on several devices, and even installed IDF v4.4.1 all with same results. The really weird thing about all this is that (hope you believe me) \r did work on my espressif devices before. In any event, if anyone else runs into this like you all sa...

I would like to thank everyone for pitching in. Before you write me off as crazy consider this. As I have mentioned in all my 25+ years I have never used fflush(stdout); before and printf would print without using \n. Something has changed using printf, not sure what. Many times in the past when I d...

boarchuz wrote:He's right, put a "fflush(stdout);" in there.

I did add fflush(stdout); and same result.

Something is strange, because i just tried something simple like printf("A"); and even that does not work.
In the past I have never had to use fflush(stdout); before. So what's changed ?

I don't think thats the case. printf should print regardless of whats in its buffer.

Using M5Stamp ESP32S3 Module. ESP-IDF 5.1 https://shop.m5stack.com/products/m5stamp-esp32s3-module When I printf with \n or \r\n things work fine in the terminal. Yet if I just use \r I get nothing. #include <stdio.h> #include "freertos/FreeRTOS.h" #include "freertos/task.h" void app_main(void) { u_...

Look in the examples folder.
https://github.com/espressif/esp-idf

Find any of the dev kits that have PSRAM. Every devkit has a schematic.

I had the same problem. What worked for me was to delete .platformio folder in your users folder. The next time you open platformIO it will reinstall everything and then it worked properly.