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made sonar support compiled in (lol)

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changed PPM pulse idle detect to 2.7ms per JimDrew instructions
updated keil project w /sonar source files.

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@168 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61
This commit is contained in:
timecop 2012-06-26 01:36:58 +00:00
parent ce1ec92a67
commit 2fd5645dce
5 changed files with 2709 additions and 2669 deletions
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2
src/drv_pwm.c
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@ -85,7 +85,7 @@ static void ppmIRQHandler(TIM_TypeDef *tim)
diff = ((0xFFFF - last) + now);
}
if (diff > 4000) {
if (diff > 2700) { // Per http://www.rcgroups.com/forums/showpost.php?p=21996147&postcount=3960 "So, if you use 2.5ms or higher as being the reset for the PPM stream start, you will be fine. I use 2.7ms just to be safe."
chan = 0;
} else {
if (diff > 750 && diff < 2250 && chan < 8) { // 750 to 2250 ms is our 'valid' channel range