ESP32-C5-WROOM and UART1

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rtborg
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ESP32-C5-WROOM and UART1

Postby rtborg » Thu Mar 05, 2026 2:49 pm

I need to use RS485 with ESP32-C5-WROOM module. Is UART1 accessible for the WROOM module?
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MicroController
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Re: ESP32-C5-WROOM and UART1

Postby MicroController » Thu Mar 05, 2026 3:04 pm

Is UART1 accessible for the WROOM module?
Sure, why not?
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rtborg
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Re: ESP32-C5-WROOM and UART1

Postby rtborg » Thu Mar 05, 2026 9:09 pm

The WROOM module datasheet has a Pin Description table at page 13 which mentions LP UART and UART0, but not UART1.
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nopnop2002
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Re: ESP32-C5-WROOM and UART1

Postby nopnop2002 » Fri Mar 06, 2026 12:42 am

from https://documentation.espressif.com/esp ... eet_en.pdf.

5.2.1.1 UART Controller

ESP32-C5 has three UART interfaces, i.e. UART0, UART1, and LP UART. All the three interfaces provide
hardware flow control (CTS and RTS signals) and software flow control (XON and XOFF).
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MicroController
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Re: ESP32-C5-WROOM and UART1

Postby MicroController » Fri Mar 06, 2026 7:35 am

You can route the UART signals to any available IO pins as desired.
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rtborg
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Re: ESP32-C5-WROOM and UART1

Postby rtborg » Mon Mar 09, 2026 8:59 pm

Thanks, that's much clearer now.
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