Supported Platforms: MODM7AE70

Open all serial ports on MODM7AE70 SOM Platform

There can be a maximum of 7 serial port configured on the device. Note that each signal pin on the microprocessor can be configured for up to 5 different functions, so to achieve the maximum number of serial ports some functions/ peripherals will be unavailable.

The SAME70 processor has two peripherals that can be used as a UART function: Three USARTs, representing Serial Port numbers 0 and 1 (USART numbers 0 - 1) Four UARTs, representing Serial Port numbers 3, 4, 5 and 6 (UART numbers 0 - 4) This mapping is described in the MODM7AE70 data sheet.

Serial Port P1 Pin P2 Pin Periph Mode USART/UART

0 RX 3 C USART 0 RX 0 TX 4 C USART 0 TX 0 CTS 29 C USART 0 CTS 0 RTS 38 C USART 0 RTS Note: Serial port 0 is stdio by default

1 RX 21 A USART 1 RX 1 TX 22 D USART 1 TX 1 RTS 32 A USART 1 RTS 1 CTS 33 A USART 1 CTS 1 DSR 16 A USART 1 DSR 1 DCD 17 A USART 1 DCD 1 DTR 18 A USART 1 DTR 1 RI 20 A USART 1 RI

2 RX 34 A UART 0 RX NOTE: tied to LED on mod-dev-70 2 TX 35 A UART 0 TX

3 RX 12 C UART 1 RX, PA5* 3 TX 31 C UART 1 TX 3 TX 42 C UART 1 TX (Alternate) 3 TX 44 D UART 1 TX (Alternate)

4 RX 41 C UART 2 RX 4 TX 44 C UART 2 TX

5 RX 23 A UART 3 RX 5 TX 7 A UART 3 TX 5 TX 24 B UART 3 TX (Alternate)

6 RX 10 C UART 4 RX 6 TX 7 C UART 4 TX CAUTION: P1.7 Cannot be used if the external address/data bus interface (EBI) is enabled.