G
Gavin Brewer
Hi Guys,
We have been attempting to read and write to the Camera chip using the
SCCB bus. Using an oscilloscope, we determined that an appropriate
waveform was obtained for the 2/3 phase write transmission cycle.
However, the 2 phase read cycle fails to return any data.
Clearly there is a problem with the firmware implementing bit-banging,
or there is something dodgy about our hardware configuration.
Are there any special conditions for the read cycle to work?
If there are any issues regarding this, we would like to know.
I am aware of previous threads in sci.electronics.design which cover
similar ground, but they do not seem to resolve the particular problems
we have been having.
BTW we have been using the Keil uVision IDE on a USB prototype
board supplied by BrainTechnology (Cypress Chip EZ-USB FX2)
Thank you for your time,
Gavin Brewer. (AXICON UK ltd)
PS. Please could you reply to me in person at [email protected]
We have been attempting to read and write to the Camera chip using the
SCCB bus. Using an oscilloscope, we determined that an appropriate
waveform was obtained for the 2/3 phase write transmission cycle.
However, the 2 phase read cycle fails to return any data.
Clearly there is a problem with the firmware implementing bit-banging,
or there is something dodgy about our hardware configuration.
Are there any special conditions for the read cycle to work?
If there are any issues regarding this, we would like to know.
I am aware of previous threads in sci.electronics.design which cover
similar ground, but they do not seem to resolve the particular problems
we have been having.
BTW we have been using the Keil uVision IDE on a USB prototype
board supplied by BrainTechnology (Cypress Chip EZ-USB FX2)
Thank you for your time,
Gavin Brewer. (AXICON UK ltd)
PS. Please could you reply to me in person at [email protected]
