Support both UART configurations #1
Description
Z-Stack firmware for CC2530 can have UART configured to two different sets of pins:
3731.Z-Stack ZNP Interface Specification.pdf
Main configuration:
- TX:
P1.6(pin 38) - RX:
P1.7(pin 37)
Alternative configuration:
- TX:
P0.3(pin 16) - RX:
P0.2(pin 17)
The ZNP Kit uses the "alternative" configuration. This is also used by the firmware provided by the https://github.com/Koenkk/Z-Stack-firmware which defines the ZTOOL_P1 macro to use HAL_UART_PORT_0.
Z-Stack Configuration
Macros ZTOOL_P1 and ZTOOL_P2 are used to enable either HAL_UART_PORT_0 or HAL_UART_PORT_1 per this research.