The module features three UARTs, these are configured as shown in the table below:
Table 3-11. GM02S UARTs| GM02S UART | Connections | Function | Baud rate | Flow control | Format | Parity | Stopbit(s) | Mode |
|---|
| UART0 | Connected to AVR128DB48 port
C | Data and control from external MCU | 115200 | Enabled (RTS/CTS) | 8-bit | None | 1 | AT |
| UART1 |
Available as 50-mil
test points | Debugging and firmware upgrade | 921600 | DCP |
| UART2 | Modem console | 115200 | Unsupported | Console |
Figure 3-4. UART1 and UART2
UART1 and UART2 are available on 50-mil test points on both the top and bottom
sides of the development board.
