N900 Hardware Bus I2c
(→Hardware) |
(→Hardware) |
||
| Line 1: | Line 1: | ||
=Hardware= | =Hardware= | ||
| - | Bus 1 | + | ==Bus 1== |
* 0x48 0x49 0x4a 0x4b [[N900 Hardware Chipset|Gaia/chipset]] | * 0x48 0x49 0x4a 0x4b [[N900 Hardware Chipset|Gaia/chipset]] | ||
| - | Bus 2 | + | ==Bus 2== |
* 0x29 [[N900 Hardware Light Meter]] | * 0x29 [[N900 Hardware Light Meter]] | ||
| Line 16: | Line 16: | ||
* 0x55 [[N900 Hardware Charge Meter]] | * 0x55 [[N900 Hardware Charge Meter]] | ||
| - | Bus 3 | + | ==Bus 3== |
* 0x0c [[N900 Hardware Autofocus|Lens focus control]] | * 0x0c [[N900 Hardware Autofocus|Lens focus control]] | ||
* 0x3e [[N900 Hardware Camera Sensor|Front Camera (control)]] | * 0x3e [[N900 Hardware Camera Sensor|Front Camera (control)]] | ||
* 0x1d [[N900 Hardware Accelerometer|Accelerometer]] | * 0x1d [[N900 Hardware Accelerometer|Accelerometer]] | ||
| - | |||
| - | |||
=Software= | =Software= | ||
Revision as of 16:44, 7 June 2010
Contents |
Hardware
Bus 1
- 0x48 0x49 0x4a 0x4b Gaia/chipset
Bus 2
smia-sensor/2-0010
- 0x18 0x19 Audio codec
- 0x30 N900 Hardware Flash Torch
- 0x63 FM receiver
- 0x60 N900 Headphone Amplifier
- 0x32 N900 Hardware LED
- 0x6B N900 Hardware Battery Charger
- 0x55 N900 Hardware Charge Meter
Bus 3
- 0x0c Lens focus control
- 0x3e Front Camera (control)
- 0x1d Accelerometer
Software
The n900 software driving I2C comes in three flavours.
Firstly, there are a large number of kernel drivers.
Then, there are a small number of devices 'bit banged' through I2C ioctls - BME for example does this.
Finally, there are probably some I2C components in the Rapuyama and assorted cellphone/GPS hardware. These are not visible to the casual developer. (you have to open the n900 and probe stuff, or hack the phone firmware).