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#include <glib.h>
#define PCF8574 0x20 /* secondary I2C peripheral device */
#define Second_PW_Port 0 /* PCF8574 at three-bit address 0 is for dual PW or Delay board (PCB 205A) */
#define Second_Dly_Port 1 /* PCF8574 at three-bit address 1 is for dual delay board (obsolete, was for AVX-DD-A3-PS-TC) */
#define To_Self_Cal_Port 2 /* PCF8574 at three-bit address 2 is for self-cal PCB 226A */
#define From_Self_Cal_Port 3 /* PCF8574 at three-bit address 3 is for self-cal PCB 226A */
#define Octal_Relay_Driver 4 /* PCF8574 at three-bit address 4 is for octal relay driver, PCB 244A */
#define Extra_DACs_Low_Port 5 /* PCF8574 at three-bit address 5 is for low byte of PCB 313A DAC board */
#define Extra_DACs_High_Port 6 /* PCF8574 at three-bit address 6 is for high byte of PCB 313A DAC board */
#define PCF8574A 0x38 /* Main I2C peripheral device */
#define Button_Press_Port 0 /* PCF8574A at three-bit address 0 is for detecting button presses */
#define LCD_Port 1 /* PCF8574A at three-bit address 1 is for LCD */
#define Lower_Encoder_Port 2 /* PCF8574A at three-bit address 2 is for lower encoder counters */
#define Upper_Encoder_Port 3 /* PCF8574A at three-bit address 3 is for upper encoder counter */
#define Curr_Mon_LSB 4 /* PCF8574A at three-bit address 4 is for current monitor */
#define Curr_Mon_MSB 5 /* PCF8574A at three-bit address 5 is for current monitor */
#define rise_time_port 4 /* PCF8574A at three-bit address 4 is for rise time circuit in AVRQ */
/* 6 and 7 reserved for dual-channel current monitor */
#define Overload_Input 64 /* mask for main overload input */
#define Over_Temp 0x10 /* over-temperature */
#define Over_Volt 0x20 /* over-voltage */
#define Over_Other 0x40 /* over-other */
void I2C_Write(gulong address, guchar value);
guchar I2C_Read(gulong address);
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