From b9bf8e01e243508297f28b102cb2477dc1bc74df Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Fri, 12 Oct 2012 14:22:41 -0700 Subject: altos: Add initial micropeak implementation Blinks out max height in decimeters, stores previous flight data to internal eeprom. Signed-off-by: Keith Packard --- src/micropeak/ao_async.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 src/micropeak/ao_async.c (limited to 'src/micropeak/ao_async.c') diff --git a/src/micropeak/ao_async.c b/src/micropeak/ao_async.c new file mode 100644 index 00000000..04bba9e8 --- /dev/null +++ b/src/micropeak/ao_async.c @@ -0,0 +1,40 @@ +/* + * Copyright © 2012 Keith Packard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include +#include + +#define AO_ASYNC_BAUD 38400l +#define AO_ASYNC_DELAY (uint8_t) (1000000l / AO_ASYNC_BAUD) + +void +ao_async_byte(uint8_t byte) +{ + uint8_t b; + uint16_t w; + + /* start bit */ + + /* start data stop */ + w = 0x001 | (byte << 1) | 0x000; + + for (b = 0; b < 10; b++) { + ao_led_set((w & 1) << AO_LED_SERIAL); + w >>= 1; + ao_delay_us(26); + } +} -- cgit v1.2.3