Cameras: Difference between revisions

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 == 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 ==