Thanks for your quick reply.

It may be ok in the free-run mode. But in trigger mode, only received one frame and it processed.
Please tell me how to apply exposure time by directly using sensor register.

I know the problem for metime. After setting the metime, it is applied after 2 frames.
ex)
./cs_mipi_i2c.sh -w -f metime -p1 100
./cs_mipi_i2c.sh -w -f striggerone // old manual exposure time
./cs_mipi_i2c.sh -w -f striggerone // old manual exposure time
./cs_mipi_i2c.sh -w -f striggerone // new manual exposure time (100)
./cs_mipi_i2c.sh -w -f metime -p1 1000
./cs_mipi_i2c.sh -w -f striggerone
./cs_mipi_i2c.sh -w -f striggerone // old manual exposure time (100)
./cs_mipi_i2c.sh -w -f striggerone // old manual exposure time (100)
./cs_mipi_i2c.sh -w -f striggerone // new manual exposure time (1000)

Please let me know how to apply from the next frame after setting the metime.
ex)
./cs_mipi_i2c.sh -w -f metime -p1 1000
./cs_mipi_i2c.sh -w -f striggerone // new manual exposure time (1000)

I'm testing the CS-MIPI-SC132 module for manual exposure and trigger in the Raspberry Pi 4B

As follow, does not work in manual exposure.

1. rebooting camera module
   $ /cs_mipi_i2c.sh -w -f sysreboot -p1 2

2. set camera stream mode to Software Trigger
   $ ./cs_mipi_i2c.sh -w -f streammode -p1 3

3. set exposure to manual
   $ ./cs_mipi_i2c.sh -w -f expmode -p1 1

4. check while changing the exposure time, but does not applied exposure time.

$ ./cs_mipi_i2c.sh -w -f metime -p1 10
$ ./cs_mipi_i2c.sh -w -f striggerone

$ ./cs_mipi_i2c.sh -w -f metime -p1 100
$ ./cs_mipi_i2c.sh -w -f striggerone

$ ./cs_mipi_i2c.sh -w -f metime -p1 1000
$ ./cs_mipi_i2c.sh -w -f striggerone

$ ./cs_mipi_i2c.sh -w -f metime -p1 10000
$ ./cs_mipi_i2c.sh -w -f striggerone