RS-232 transceiver connection definition

## Macros

#define | BUSVOODOO_RS232_EN_PORT B
| RS-232 pin to enable receiver (active low, pulled up)
#define | BUSVOODOO_RS232_EN_PIN 5
| RS-232 pin to enable receiver (active low, pulled up)
#define | BUSVOODOO_RS232_SHDN_PORT C
| RS-232 pin to enable transmitter (active high, pulled low)
#define | BUSVOODOO_RS232_SHDN_PIN 15
| RS-232 pin to enable transmitter (active high, pulled low)
#define | BUSVOODOO_RS232_RTS_PORT A
| RS-232 Request-To-Send output pin.
#define | BUSVOODOO_RS232_RTS_PIN 1
| RS-232 Request-To-Send output pin.
#define | BUSVOODOO_RS232_CTS_PORT A
| RS-232 Clear-To-Send input pin.
#define | BUSVOODOO_RS232_CTS_PIN 0
| RS-232 Clear-To-Send input pin.
#define | BUSVOODOO_RS232_TX_PORT A
| RS-232 Transmit output pin.
#define | BUSVOODOO_RS232_TX_PIN 2
| RS-232 Transmit output pin.
#define | BUSVOODOO_RS232_RX_PORT A
| RS-232 Receive input pin.
#define | BUSVOODOO_RS232_RX_PIN 3
| RS-232 Receive input pin.

## Detailed Description