diff options
Diffstat (limited to 'i2c.h')
| -rw-r--r-- | i2c.h | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1,8 +1,8 @@ #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 board (1021D) */ -#define Second_Dly_Port 1 /* PCF8574 at three-bit address 1 is for dual delay board (AVX-DD-A3-PS-TC) */ +#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 */ |