Texas Instruments MSP430 User Manual

379
#define baudrate 4800
#define no_of_bits 8
#define one_bit_delay (1000000 / baudrate)
#define half_bit_delay (one_bit_delay / 2)
void SW_UART_init(void);
void SW_UART_transmit(unsigned char value);
unsigned char SW_UART_receive(void);
SW_UART.c
#include "SW_UART.h"
void SW_UART_init(void)
{
SW_UART_TXD_DIR_OUT();
SW_UART_RXD_DIR_IN();
SW_UART_TXD_OUT_HIGH();
delay_ms(10);
}
void SW_UART_transmit(unsigned char value)
{
unsigned char bits = 0;
SW_UART_TXD_OUT_LOW();
delay_us(one_bit_delay);
for(bits = 0; bits < no_of_bits; bits++)
{
if((value >> bits) & 0x01)
{
SW_UART_TXD_OUT_HIGH();
}
else
{
SW_UART_TXD_OUT_LOW();
}
delay_us(one_bit_delay);
};
SW_UART_TXD_OUT_HIGH();
delay_us(one_bit_delay);
}
unsigned char SW_UART_receive(void)
{
unsigned char bits = 0;
unsigned char value = 0;
while(SW_UART_RXD_INPUT());

Texas Instruments MSP430 Specifications

General

Brand	Texas Instruments
Model	MSP430
Category	Microcontrollers
Language	English