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Camera module Trigger Mode manual (view source)
Revision as of 15:37, 19 June 2020
, 15:37, 19 June 2020→Delay in trigger mode
Triggger edge, trigger delay and trigger debouncer attribute supported.
Triggger edge, trigger delay and trigger debouncer attribute supported.
''triggeredge'' ：trigger edge
'''''triggeredge'''''：trigger edge
''tgdly''：trigger delay
'''''tgdly'''''：trigger delay
''tgdebncr''：debouncer
'''''tgdebncr'''''：debouncer
====Software Trigger====
====Software Trigger====
In this mode，Use the I2C register to trigger an image.
In this mode，Use the I2C register to trigger an image.
''striggerone'': trigger an image
'''''striggerone'''''： trigger an image
Note：The above instructions refer to [[CS-MIPI-X i2c|CS Serial I2C setting]] .
Note：The above instructions refer to [[CS-MIPI-X i2c|CS Serial I2C setting]] .
but because the AE algorithm needs to go through some frames to converge, the exposure effect of the first few frames will not be good.
but because the AE algorithm needs to go through some frames to converge, the exposure effect of the first few frames will not be good.
''expmode''：exposure mode setting
'''''expmode'''''：exposure mode setting
''metime''：manual exposure time
'''''metime'''''：manual exposure time
''meagain''：manual analog gain
'''''meagain'''''：manual analog gain
''medgain''：manual digital gain
'''''medgain'''''：manual digital gain
You can use the ''expostate'' instruction to read out the current exposure time and gain value in automatic mode as a reference.
You can use the ''expostate'' instruction to read out the current exposure time and gain value in automatic mode as a reference.
'''''T<sub>tgmin =</sub> T<sub>exp</sub> + T<sub>trans</sub>'''''
'''''T<sub>tgmin =</sub> T<sub>exp</sub> + T<sub>trans</sub>'''''
T<sub>tgmin</sub> minimum trigger interval
'''''T<sub>tgmin</sub>'''''：minimum trigger interval
T<sub>exp</sub>： exposure time
'''''T<sub>exp</sub>'''''：exposure time
T<sub>trans</sub>：transmission time of one frame
'''''T<sub>trans</sub>'''''：transmission time of one frame
Accordingly, if the minimum trigger interval is known, the maximum allowable exposure time is:
Accordingly, if the minimum trigger interval is known, the maximum allowable exposure time is:
'''''T<sub>expmax =</sub> T<sub>tgmin -</sub> T<sub>trans</sub>'''''
'''''T<sub>expmax =</sub> T<sub>tgmin -</sub> T<sub>trans</sub>'''''
T<sub>expmax</sub> maximum exposure time
'''''T<sub>expmax</sub>'''''：maximum exposure time
If the time interval between the current trigger signal and the previous trigger signal is smaller than the minimum interval time,
If the time interval between the current trigger signal and the previous trigger signal is smaller than the minimum interval time,
the sensor will ignore the current trigger signal.
the sensor will ignore the current trigger signal.
*'''''T<sub>exp</sub>'' exposure time'''
*'''''T<sub>exp</sub>''：exposure time'''
Users can set it to automatical or manual.
Users can set it to automatical or manual.
''expmode'' is manual : set exposure time via ''metime''.
''expmode'' is manual : set exposure time via ''metime''.
*'''''T<sub>trans</sub>'' ： transmission time of one frame'''
*'''''T<sub>trans</sub>''：transmission time of one frame'''
The transmission time of a frame is related to the current resolution mode.
The transmission time of a frame is related to the current resolution mode.
|+Exposure time table in trigger mode
|+Exposure time table in trigger mode
!Video Format
!Video Format
!'''''T<sub>trans</sub>'''''(ms)
!'''''T<sub>trans</sub>'''''（ms）
!Max Framerate
!Max Framerate
!Maximum exposure time to guarantee maximum framerate（ms）
!Maximum exposure time to guarantee maximum framerate（ms）
|+Trigger delay measurement result
|+Trigger delay measurement result
!Video Format
!Video Format
!T<sub>exp</sub>（us）
!''T<sub>exp</sub>''（us）
!T<sub>total</sub>(ms）
!''T<sub>total</sub>''（ms）
|-
|-
|1280x1080
|1280x1080