My script runs, but I always get a return of 0 on get_usb_power.
An easy way to test if a USB switch can work on a given camera is to run a simple script like this: @title test remote
My S2 can detect usb voltage as seen in misc values and can report duration while running remote test scripts. The problem is that it likes to go into playback mode and take no photos without running a remote script. Despite my searching, I haven't found a reason for this and would like to know why it's like it is.
When +5V is connected to the USB, a signal goes to the DIGIC chip and the firmware sets a particular location in memory to indicate the +5V is present.The Canon firmware switches to playback mode and tries to communicate with the PC when it sees that memory location is set to '1'.Your computer may respond to the camera communication by starting a designated programme.That programme may be Canon ZoomBrowser or it may be any other designated programme.Now, to use a USB remote we need to stop all of this from happening.When menu option 'USB Remote' is enabled, we set that memory location back to '0' one hundred times a second, so the Canon firmware never knows the USB is connected and does not switch to playback mode.
Started by Mr Cat
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