ESB RS232
[The ESB Embedded Sensor Board]

Files
file	rs232.h
	Header file for MSP430 RS232 driver.
file	rs232.c
	RS232 communication device driver for the MSP430.
file	rs232.h
	Header file for MSP430 RS232 driver.
file	rs232.c
	RS232 communication device driver for the MSP430.
file	rs232.h
	Header file for MSP430 RS232 driver.
Functions
void	rs232_init (void)
	Initialize the RS232 module.
void	rs232_set_input (int(*f)(unsigned char))
	Set an input handler for incoming RS232 data.
void	rs232_set_speed (unsigned char speed)
	Configure the speed of the RS232 hardware.
void	rs232_print (char *text)
	Print a text string on RS232.
void	rs232_send (char c)
	Print a character on RS232.
void	rs232_set_speed (enum rs232_speed speed)
	Configure the speed of the RS232 hardware.
void	rs232_set_input (uart_handler_t f)
	Set an input handler for incoming RS232 data.

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Function Documentation

void rs232_init

(

void

)

Initialize the RS232 module.

Initalize the RS232 port.

This function is called from the boot up code to initalize the RS232 module.

Referenced by main().

void rs232_print

(

char *

text

)

Print a text string on RS232.

Parameters:

str

A pointer to the string that is to be printed

This function prints a string to RS232. The string must be terminated by a null byte. The RS232 module must be correctly initalized and configured for this function to work.

Referenced by main().

void rs232_send

(

char

c

)

Print a character on RS232.

Parameters:

c

The character to be printed

This function prints a character to RS232. The RS232 module must be correctly initalized and configured for this function to work.

void rs232_set_input

(

uart_handler_t

f

)

Set an input handler for incoming RS232 data.

Parameters:

f

A pointer to a byte input handler

This function sets the input handler for incoming RS232 data. The input handler function is called for every incoming data byte. The function is called from the RS232 interrupt handler, so care must be taken when implementing the input handler to avoid race conditions.

The return value of the input handler affects the sleep mode of the CPU: if the input handler returns non-zero (true), the CPU is awakened to let other processing take place. If the input handler returns zero, the CPU is kept sleeping.

void rs232_set_input

(

int(*)(unsigned char)

f

)

Set an input handler for incoming RS232 data.

Parameters:

f

A pointer to a byte input handler

This function sets the input handler for incoming RS232 data. The input handler function is called for every incoming data byte. The function is called from the RS232 interrupt handler, so care must be taken when implementing the input handler to avoid race conditions.

The return value of the input handler affects the sleep mode of the CPU: if the input handler returns non-zero (true), the CPU is awakened to let other processing take place. If the input handler returns zero, the CPU is kept sleeping.

Definition at line 56 of file rs232.c.

Referenced by main(), and slip_arch_init().

void rs232_set_speed

(

enum rs232_speed

speed

)

Configure the speed of the RS232 hardware.

Parameters:

speed

The speed

This function configures the speed of the RS232 hardware. The allowed parameters are RS232_9600, RS232_19200, RS232_38400, RS232_57600, and RS232_115200.

void rs232_set_speed

(

unsigned char

speed

)

Configure the speed of the RS232 hardware.

Parameters:

speed

The speed

This function configures the speed of the RS232 hardware. The allowed parameters are RS232_19200, RS232_38400, RS232_57600, and RS232_115200.