3.2.7.1 GM02S UARTs

The module features three UARTs, these are configured as shown in the table below:
Table 3-11. GM02S UARTs
GM02S UARTConnectionsFunctionBaud rateFlow controlFormatParityStopbit(s)Mode
UART0Connected to AVR128DB48 port CData and control from external MCU115200Enabled (RTS/CTS)8-bitNone1AT
UART1 Available as 50-mil test pointsDebugging and firmware upgrade921600DCP
UART2Modem console115200UnsupportedConsole
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.