| Commands | Data | Parameters | Description | Response |
|---|---|---|---|---|
| GETID | 0xA0 | - | Get identifier | "MCDINO" |
| GETVER | 0xA1 | - | Get firmware version | Firmware version byte (Major.Minor). |
| MCR | 0xA2 | MSB, LSB | Memory Card Read (frame) | Data, XOR, Status |
| MCW | 0xA3 | MSB, LSB, data, XOR | Memory Card Write (frame) | Status |
| Status | Data | Description |
|---|---|---|
| ERROR | 0xE0 | Invalid command received (error) |
| GOOD | 0x47 | Operation successful |
| BAD_CHECKSUM | 0x4E | Data corruption occured |
| BAD_SECTOR | 0xFF | Outside of max sector range |
Communication is done at 115200 bps.
To check if MemCARDuino is connected to the selected COM port send GETID command.
Device should respond with IDENTIFIER.
Optionally you can send a GETVER to get the version of the firmware.
To Read a 128byte frame send a MCR command with MSB byte and LSB byte of the frame you want to read.
MemCARDduino will respond with 128 byte frame data, [MSB xor LSB xor Data] and Memory Card status byte.
To Write a frame send a MCW command with MSB byte and LSB byte, 128 byte data and [MSB xor LSB xor Data].
MemCARDduino will respond with Memory Card status byte.
Read a frame from the card and verify the returned status byte.
If it's 0x47 then card is connected. If it's 0xFF card is not connected.