Circle Pad Pro
Also known as CTR-009, it sends the commands to the console through the IR interface on the back of the console.
Usage Instructions
IR Protocol
Communications with this device is done via the ir:USER service, which uses obfuscation implemented in software. The bitrate-value passed to IRUSER is 0x04, hence the actual bps is 96000.
The application sends requests via IRUSER:SendIrnop and receives response from Circle Pad Pro via IRUSER:ReceiveIrnop (or read data from the shared memory). The request and response data structures below are payloads in packets. Each request begins with a one-byte ID that determines the request type.
Request 1: Read Input
Request (3 bytes):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Request ID (fixed value 1) |
| 0x1 | 0x1 | Response period in ms |
| 0x2 | 0x1 | Unknown |
Response (6 bytes): This Response will be sent repeatedly by the specified period.
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Response ID? Fixed value 0x10 |
| 0x1 | 0x3 | Right circle pad position.
This three bytes are two little-endian 12-bit fields. The first one is for x-axis and the second one is for y-axis. |
| 0x4 | 0x1 | bit[0:4] battery level?
bit[5] ZL button bit[6] ZR button bit[7] R button Note that for the three button fields, the bit is set when the button is NOT pressed. |
| 0x5 | 0x1 | Unknown |
Request 2: Read Calibration Data?
Request (6 bytes):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Request ID (fixed value 2) |
| 0x1 | 0x1 | Expected response time in ms? |
| 0x2 | 0x2 | Data offset? (aligned to 0x10?) |
| 0x4 | 0x2 | Data size (aligned to 0x10?) |
Response (5 bytes + requested size)
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Response ID? Fixed value 0x11 |
| 0x1 | 0x2 | Data offset? Same as Request+0x2 |
| 0x3 | 0x2 | Data size. Same as Request+0x4 |
| 0x5 | data size | calibration data? |
Request 3
Request (22 bytes?):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Request ID (fixed value 3) |
| 0x1 | 0x1 | Expected response time in ms? |
| 0x2 | ... | ? |
Response (2 bytes?):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Response ID? Fixed value 0x12 |
| 0x1 | 0x1 | 0? |
Request 4: Reset Calibration Data?
Request (3 bytes?):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Request ID (fixed value 4) |
| 0x1 | 0x1 | Expected response time in ms? |
| 0x2 | 0x1 | ? |
Response (2 bytes?):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Response ID? Fixed value 0x13 |
| 0x1 | 0x1 | 0? |
Request 5
Request (2 bytes):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Request ID (fixed value 5) |
| 0x1 | 0x1 | Expected response time in ms? |
Response (2 bytes?):
| offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Response ID? Fixed value 0x14 |
| 0x1 | 0x1 | ? |