GPIO Registers: Difference between revisions
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Revision as of 20:12, 13 October 2020
MMIO Interfaces
| Name | Physical address |
|---|---|
| SceGpio0Reg | 0xE20A0000 |
| SceGpio1Reg | 0xE0100000 |
Registers
| Offset | Size | Description |
|---|---|---|
| 0x00 | 4 | Port mode (1=out, 0=in) (1 bit each port) |
| 0x04 | 4 | Port read (1=low, 0=high?) (1 bit each port) |
| 0x08 | 4 | Port set (1 bit each port) |
| 0x0C | 4 | Port clear (1 bit each port) |
| 0x14 | 4 | Interrupt mode (2 bits) for interrupts 0-15 |
| 0x18 | 4 | Interrupt mode (2 bits) for interrupts 16-31 |
| 0x34 | 4 | Port read latched? (1=low, 0=high?) (1 bit each port) |
It looks like +0x10,+0x14,+0x18,+0x1C,+0x20 are related to interrupt enable, and +0x38,+0x3C,+0x40,+0x44,+0x48 to interrupt ack.
GPIO Bus 0 ports
| Port | Description |
|---|---|
| 0 | OLED/LCD |
| 1 | unk |
| 2 | unk |
| 3 | Syscon related (output) |
| 4 | Syscon related (input) |
| 5 | UDCD (USB Device Controller Driver) related |
| 6 | Game Card reader LED |
| 7 | PS Button Blue LED (only blue ?? no red?) |
| 8 | unk |
| 9 | Camera |
| 10 | unk. Used in 0.996 SceEnumWakeUp. |
| 11 | unk. Used in 0.996 SceEnumWakeUp. |
| 12 | UDCD (USB Device Controller Driver) related |
| 13 | HDMI related (input) |
| 14 | unk |
| 15 | HDMI related (output) |
| 16 | GPO 0 (Developpement Tool LED 0) |
| 17 | GPO 1 (Developpement Tool LED 1) |
| 18 | GPO 2 (Developpement Tool LED 2) |
| 19 | GPO 3 (Developpement Tool LED 3) |
| 20 | GPO 4 (Developpement Tool LED 4) |
| 21 | GPO 5 (Developpement Tool LED 5) |
| 22 | GPO 6 (Developpement Tool LED 6) |
| 23 | GPO 7 (Developpement Tool LED 7) |
| 24 | UDCD (USB Device Controller Driver) related |
| 25 | unk |
| 26 | unk |
| 27 | Motion related |
| 28 | Motion related |
| 29 | SDIF related |
| 30 | 3G Modem related |
| 31 | unk |
GPIO Bus 1 ports
| Port | Description |
|---|---|
| 7 | LCD related. Backlight? |