simple read and write commands

[jakelamon]

Hey all,

I have a pretty basic C program - where I want to read a value and return the value back based on a keypress, I can write out the value within the program fine, but having trouble understanding the read/write combo.

So for example if I wanted to do:

if (FSUIPC_Read(0x53C1, 1 AP, &dwResult)) || (FSUIPC_Write(0x53C1, 1, AP, &dwResult))

FSUIPC_Process(&dwResult)

I'm having trouble achieving to read and then writing out even if I have the relevant commands in fsuipc_io as well

Thanks for any help!

[Pete Dowson]

if (FSUIPC_Read(0x53C1, 1 AP, &dwResult)) || (FSUIPC_Write(0x53C1, 1, AP, &dwResult))

Since when successful the FSUIPC_Read call returns "TRUE", the FSUIPC_Write function will only ever be called if the Read fails! surely that is the opposite of what you want.

Remember, in C conditional combinations are only evaluated as far as is necessary to determine the result.

Try && instead of ||.

Pete