mjb/altos/src/ao_terraui.c, branch teleterraAltOS - the operating system for Altus Metrum products
https://git.ethernal.org/mjb/altos/atom?h=teleterra2010-10-31T07:38:39+00:00teleterra: Add PWM audio system2010-10-31T07:38:39+00:00Keith Packardkeithp@keithp.com2010-10-31T07:38:39+00:00urn:sha1:3493b456399bcc0ea43d28fd4105928bd8793cff
This uses timers 3 and 4 to emit 8-bit 11025Hz audio using a 93.8kHz
carrier. A simple low-pass filter to eliminate the 93.8kHz signal
results in credible 8-bit audio.
There is a giant sample for testing in the ao_audio code which shouldn't
be included in a product.
Signed-off-by: Keith Packard <keithp@keithp.com>
Add initial teleterra implementation.2010-10-31T02:36:29+00:00Keith Packardkeithp@keithp.com2010-10-31T02:36:29+00:00urn:sha1:3f53e5daeca4d9257aef017594fd65b379b97a1e
Not a lot of new code here, but it does test the teleterra audio system.
Signed-off-by: Keith Packard <keithp@keithp.com>