4.3.13 Serial Breakout Header Connector (J17)
The serial breakout header connector J17 of the Portenta Mid Carrier can be used to debug the SERIAL1 interface.
Pin Number Silkscreen Power Net Portenta HD Standard Pin High-Density Pin Interface
1 N/A SERIAL1_RX J1-35 UART 1 RX
2 N/A SERIAL1_TX J1-33 UART 1 TX
3 N/A SERIAL1_RTS J1-37 UART 1 RTS
4 N/A SERIAL1_CTS J1-39 UART 1 CTS
5 N/A GPIO_6 J2-58