How to connect the ECB_AT91 using Serial Ports (RS232)
The ecb_at91 v1 and v2 have two serial ports (2 UARTs), named ttyS0 and ttyS1 in Linux. The following image and the table with it will tell you how to connect to it using RS232.
| Signal | Serial pin | Serial Pin | Signal | Description |
|---|---|---|---|---|
| TX0 | 1 | 2 | RX0 | /dev/ttyS1 |
| RX1 | 3 | 4 | TX1 | /dev/ttyS0 (default console) |
| VDD | 5 | 6 | VDD | 3.3V out |
| GND | 7 | 8 | GND | Common |
Sample Connection: PC as DTE* and ECB_AT91 as DCE**
| DB9 | Serial pin | ECB_AT91 Serial port pin | Signal | Description |
|---|---|---|---|---|
| TX | 3 | 3 | RX1 | /dev/ttyS0 rx |
| RX | 2 | 4 | TX1 | /dev/ttyS0 tx |
| GND | 5 | 7 or 8 | GND | Common |
*DTE Data terminal equipment
**DCE Data Communications Equipment
Last update: 2007-05-11 (Rev 289)