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→Camera registers
== Camera registers ==
== Camera registers ==
The cameras are controlled and initialized with [[I2C_Bus#Cameras|I2C]]. For retrieving camera video data, [[NDMA]] with arm9 startup mode 11(camera) is used. Source register is 0x04004204, transferred length varies.
The cameras are controlled and initialized with [[I2C_Bus#Cameras|I2C]]. The below registers are accessed by the arm9.
{| class="wikitable" border="1"
|-
! ADDRESS
! WIDTH
! NAME
|-
| 0x04004200
| 2
| REG_CAMUNK
|-
| 0x04004202
| 2
| REG_CAMCNT
|-
| 0x04004204
| 4
| REG_CAMDATA
|}
== REG_CAMUNK ==
{| class="wikitable" border="1"
|-
! BIT
! DESCRIPTION
|-
| 15-0
| ?
|}
== REG_CAMCNT ==
{| class="wikitable" border="1"
|-
! BIT
! DESCRIPTION
|-
| 13-0
| ?
|-
| 14
| ?
|-
| 15
| Frame transfer enable
|}
== REG_CAMDATA ==
{| class="wikitable" border="1"
|-
! BIT
! DESCRIPTION
|-
| 31-0
| Video data
|}
For retrieving camera video data, [[NDMA]] with arm9 startup mode 11(camera) is used with this src register. Transferred length varies per resolution. In the video data, each pixel is 2 bytes.
== See also ==
== See also ==