ESP32-WROVER UART1 Interface

velmurugan7kmvs
Posts: 15
Joined: Mon Jun 29, 2020 9:10 am

ESP32-WROVER UART1 Interface

Postby velmurugan7kmvs » Mon Mar 07, 2022 3:28 am

Hi All,

Good day!

I am using WROVER module in my design and not sure if i can brought out UART1 on any of the GPIO pads using GPIO Matrix.
I am planning to configure as follows.I read through some topics on this forum and other github pages.
However, i would like to double confirm before releasing the PCB gerber for fabrication.

IO15 - UART1_TXD -> Output
IO2 - UART1_RXD -> Input
IO4 - UART1_RTS -> Input
IO21 - UART1_CTS -> Output

Thanks in advance!

Regards,
VM

ESP_Sprite
Posts: 9591
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-WROVER UART1 Interface

Postby ESP_Sprite » Mon Mar 07, 2022 7:38 am

Yes, you can, but keep in mind that there are bootstrap pins (GPIO15/2 are bootstrap pins iirc), you want to make sure that they'll be the proper levels on bootup.

velmurugan7kmvs
Posts: 15
Joined: Mon Jun 29, 2020 9:10 am

Re: ESP32-WROVER UART1 Interface

Postby velmurugan7kmvs » Mon Mar 07, 2022 5:49 pm

Hi @ESP_Sprite,

Thanks for your quick response. 8-)
I swapped some signals and moved the UART lines to the different pads as follows,
IO27 - UART1_TXD -> Output
IO14 - UART1_RXD -> Input
IO12 - UART1_RTS -> Input
IO13 - UART1_CTS -> Output

Regards,
VM

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