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PCF8591.c

#include "PCF8591.h"

void PCF8591_write(unsigned char control_value, unsigned char data_value)

{

SW_I2C_start();

SW_I2C_write(PCF8591_write_cmd);

SW_I2C_wait_ACK();

SW_I2C_write((control_value & 0xFF));

SW_I2C_wait_ACK();

SW_I2C_write(data_value);

SW_I2C_wait_ACK();

SW_I2C_stop();

}

unsigned char PCF8591_read(unsigned char control_value)

{

unsigned char value = 0;

SW_I2C_start();

SW_I2C_write(PCF8591_write_cmd);

SW_I2C_wait_ACK();

SW_I2C_write((control_value & 0xFF));

SW_I2C_ACK_NACK(I2C_ACK);

SW_I2C_stop();

SW_I2C_start();

SW_I2C_write(PCF8591_read_cmd);

SW_I2C_wait_ACK();

value = SW_I2C_read(0);

SW_I2C_wait_ACK();

SW_I2C_stop();

return value;

}

main.c

#include <msp430.h>

#include "delay.h"

#include "SW_I2C.h"

#include "PCF8591.h"

#include "lcd.h"

void GPIO_graceInit(void);

void BCSplus_graceInit(void);

void System_graceInit(void);

void WDTplus_graceInit(void);

void lcd_print(unsigned char x_pos, unsigned char y_pos, unsigned char value);

void main(void)

{

unsigned char adc0 = 0;

Brand	Texas Instruments
Model	MSP430
Category	Microcontrollers
Language	English

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