Hi,
I'm making an on-board computer / dash display that will be taking up alot of space on the dash... The problem is that my AC controls will be taken out. My plan is to emulate the controls on my screen.
I'm using a 16F872 to do most of the work and everthing is done except the AC ON signal. Which is a variable pulse width signal of 4-6 bytes that travels on the PCI bus of the car.
I have access to the code but was wondering if there is a GOOD way to add them to the bus when its clear.
My plan was to wait for a clearing in the line and then use the pic outputs to make the 0 and 1's required in the command. Ie: Output high for 50us then low for 150us then high for etc etc
I know PWM is good for widths, but not for freqencies... Should I consider using PWM instead of spelling out the signal? Is there anyone thats done VPW work like this ?
I'm making an on-board computer / dash display that will be taking up alot of space on the dash... The problem is that my AC controls will be taken out. My plan is to emulate the controls on my screen.
I'm using a 16F872 to do most of the work and everthing is done except the AC ON signal. Which is a variable pulse width signal of 4-6 bytes that travels on the PCI bus of the car.
I have access to the code but was wondering if there is a GOOD way to add them to the bus when its clear.
My plan was to wait for a clearing in the line and then use the pic outputs to make the 0 and 1's required in the command. Ie: Output high for 50us then low for 150us then high for etc etc
I know PWM is good for widths, but not for freqencies... Should I consider using PWM instead of spelling out the signal? Is there anyone thats done VPW work like this ?