UART baud rate

underwater
Posts: 1
Joined: Sat Feb 25, 2017 6:44 am

UART baud rate

Postby underwater » Sat Feb 25, 2017 6:46 am

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.

ESP_puff
Posts: 13
Joined: Tue Jan 10, 2017 8:34 am

Re: UART baud rate

Postby ESP_puff » Mon Feb 27, 2017 5:02 am

Hello underwater,
it is the limitation of AT command firmware. You can get a higher baudrate if you write the code by yourself

Ritu21
Posts: 123
Joined: Sat Aug 04, 2018 9:58 am

Re: UART baud rate

Postby Ritu21 » Tue Dec 04, 2018 7:40 am

Hi ,

What is the maximum limit for baudrate, when configuring through code??

Thanks
R.

ESP_houwenxiang
Posts: 118
Joined: Tue Jun 26, 2018 3:09 am

Re: UART baud rate

Postby ESP_houwenxiang » Mon Dec 10, 2018 6:52 am

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.
wookooho

Ritu21
Posts: 123
Joined: Sat Aug 04, 2018 9:58 am

Re: UART baud rate

Postby Ritu21 » Mon Dec 10, 2018 7:25 am

So, you mean, 655360 bits per second??

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loboris
Posts: 514
Joined: Wed Dec 21, 2016 7:40 pm

Re: UART baud rate

Postby loboris » 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.

ESP_houwenxiang
Posts: 118
Joined: Tue Jun 26, 2018 3:09 am

Re: UART baud rate

Postby ESP_houwenxiang » Wed Dec 12, 2018 3:28 am

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 ?
wookooho

Ritu21
Posts: 123
Joined: Sat Aug 04, 2018 9:58 am

Re: UART baud rate

Postby Ritu21 » Wed Dec 12, 2018 8:24 am

No, I havn't tested it yet.

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