I2C address = 0x38
| address | mode | name | note |
|---|---|---|---|
| 0x00 | R/W | data | R = read GPIO data, W= write byte to output register. |
| 0x01 | R/W | tristate register | bit at 1= input, bit at 0= output, default = 0xFF (all input). |
Using an ALTERA MAX II CPLD (EPM240)
| # GPIO | Size(LE) | Note |
|---|---|---|
| 8 | ~160 | mockup project |
| 32 | ~260 | doesn't fit in a EPM240 |
See raspi and altera directories
