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-rw-r--r--i2c.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/i2c.h b/i2c.h
index 86a141c..b1b9f7e 100644
--- a/i2c.h
+++ b/i2c.h
@@ -6,8 +6,8 @@
#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 Extra_DACs_Data_Port 5 /* PCF8574 at three-bit address 5 is for the data byte of PCB 313A DAC board */
+#define Extra_DACs_Addr_Port 6 /* PCF8574 at three-bit address 6 is for address lines 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 */