Hi Trawgz,
would you please share any example on how to configure UART with DMA
best regards,
Elhawy
Search found 3 matches
- Tue Feb 01, 2022 10:08 am
- Forum: ESP-IDF
- Topic: UART DMA Change Idle Time
- Replies: 2
- Views: 2356
- Tue Feb 01, 2022 9:47 am
- Forum: ESP-IDF
- Topic: UART RX FIFO overflow problem on 2000000 Baud rate
- Replies: 1
- Views: 3146
Re: UART RX FIFO overflow problem on 2000000 Baud rate
I could reduce the ISR execution time significantly by placing FreeRTOS function in IRAM instead of flash, this helped a lot since the default UART ISR uses FreeRTOS functions to send the received data to the UART driver's Rx queue. The ISR execution time now is about 25 uSeconds
Best regards,
Elhawy
Best regards,
Elhawy
- Mon Jan 24, 2022 2:18 pm
- Forum: ESP-IDF
- Topic: UART RX FIFO overflow problem on 2000000 Baud rate
- Replies: 1
- Views: 3146
UART RX FIFO overflow problem on 2000000 Baud rate
Hello all, I am working on a project using ESP32-S with ESP-IDF 4.3.1, the device receives UART data with 2000000 Baud rate, rx fifo full threshold is 120 bytes, uart isr is in IRAM. The problem is that the UART rx fifo gets overflowed when a large amount of data is received at once without having d...