PWM Reader

[aabir786]

Guys, I've got a real world problem to solve. In a nutshell I am trying to build a PWM reader to read the output of a pressure sensor. attachment shows what output of the sensor looks like.

First 12 bits represent the pressure and the next 3 bits are not used and the final bit is error flag.

Low pulse of 40us = 0; while low pulse of 80us = 1.

Can you please guide me in the right direction.

Thanks.

[dorvakta]

Attached image shown.

[sterretje]

read input
if low
  start timing
  read input and wait for input to go high using while loop
  measure time
back to begin

[dlloyd]

What pressure sensor is it (part# or link or datasheet)?