Texas Instruments MSP430 User Manual

321
unsigned char SW_I2C_wait_ACK(void)
{
signed int timeout = 0;
SDA_DIR_IN();
SDA_HIGH();
delay_us(1);
SCL_HIGH();
delay_us(1);
while(SDA_IN() != 0x00)
{
timeout++;
if(timeout > I2C_timeout)
{
SW_I2C_stop();
return 1;
}
};
SCL_LOW();
return 0;
}
PCF8591.h
#define PCF8591_address 0x90
#define PCF8591_read_cmd (PCF8591_address | 0x01)
#define PCF8591_write_cmd PCF8591_address
#define AIN0 0x00
#define AIN1 0x01
#define AIN2 0x02
#define AIN3 0x03
#define Auto_Increment_Enable 0x04
#define Auto_Increment_Disable 0x00
#define Four_Channel_ADC 0x00
#define Three_differential_Inputs 0x10
#define AIN0_and_1_Single_AIN2_and_AIN3_Differential 0x20
#define All_Differential 0x30
#define AOut_enable 0x40
#define AOut_disable 0x00
void PCF8591_write(unsigned char control_value, unsigned char data_value);
unsigned char PCF8591_read(unsigned char control_value);

Texas Instruments MSP430 Specifications

General

Brand	Texas Instruments
Model	MSP430
Category	Microcontrollers
Language	English