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UART baud rate
Posted: Sat Feb 25, 2017 6:46 am
by underwater
Hello,
I read the AT instruction set and examples and it states the maximum baudrate for the UART is 5000000 baud. Is that a limitation of the hardware or are higher baudrates also possible.
Re: UART baud rate
Posted: Mon Feb 27, 2017 5:02 am
by ESP_puff
Hello underwater,
it is the limitation of AT command firmware. You can get a higher baudrate if you write the code by yourself
Re: UART baud rate
Posted: Tue Dec 04, 2018 7:40 am
by Ritu21
Hi ,
What is the maximum limit for baudrate, when configuring through code??
Thanks
R.
Re: UART baud rate
Posted: Mon Dec 10, 2018 6:52 am
by ESP_houwenxiang
Ritu21 wrote: ↑Tue Dec 04, 2018 7:40 am
Hi ,
What is the maximum limit for baudrate, when configuring through code??
Thanks
R.
Hi, 5Mbps is the maximum limit.
Re: UART baud rate
Posted: Mon Dec 10, 2018 7:25 am
by Ritu21
So, you mean, 655360 bits per second??
Re: UART baud rate
Posted: Mon Dec 10, 2018 9:30 am
by loboris
I have tested with 4000000,3500000,3000000,2500000, 2000000 bits/sec on ESP32-WROVER-KIT (with FTDI USBtoSERIAL) and it works.
Re: UART baud rate
Posted: Wed Dec 12, 2018 3:28 am
by ESP_houwenxiang
loboris wrote: ↑Mon Dec 10, 2018 9:30 am
I have tested with 4000000,3500000,3000000,2500000, 2000000 bits/sec on ESP32-WROVER-KIT (with FTDI USBtoSERIAL) and it works.
I mean 5000000bit/s, in the data format of start+8bit+stop, it can trans 500,000 byte/s.
Do you test with 5000000 bits/sec ?
Re: UART baud rate
Posted: Wed Dec 12, 2018 8:24 am
by Ritu21
No, I havn't tested it yet.
Re: UART baud rate
Posted: Mon Apr 26, 2021 7:01 am
by aakashteggi96
you said your own code what does that means ?? im trying to send at-commands using usb-uart to esp32 at 2000000 but unable to communicate..
Re: UART baud rate
Posted: Fri Oct 29, 2021 4:40 pm
by fabiogrs93
loboris wrote: ↑Mon Dec 10, 2018 9:30 am
I have tested with 4000000,3500000,3000000,2500000, 2000000 bits/sec on ESP32-WROVER-KIT (with FTDI USBtoSERIAL) and it works.
Hello, have you tested using the ESP-IFD Sdk simply set the baud rate to 4000000? Are necessary some special operation to set this value of baud rate? thank you