diff options
Diffstat (limited to 'src/micropeak/ao_async.c')
| -rw-r--r-- | src/micropeak/ao_async.c | 71 | 
1 files changed, 0 insertions, 71 deletions
diff --git a/src/micropeak/ao_async.c b/src/micropeak/ao_async.c deleted file mode 100644 index 3556f54c..00000000 --- a/src/micropeak/ao_async.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * Copyright © 2012 Keith Packard <keithp@keithp.com> - * - * 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 <ao.h> -#include <ao_async.h> - -#define AO_ASYNC_BAUD	38400l -#define AO_ASYNC_DELAY	(uint8_t) (1000000l / AO_ASYNC_BAUD) - -#define LED_PORT	PORTB - -void -ao_async_start(void) -{ -	LED_PORT |= (1 << AO_LED_SERIAL); -} - -void -ao_async_stop(void) -{ -	LED_PORT &= ~(1 << AO_LED_SERIAL); -} - -void -ao_async_byte(uint8_t byte) -{ -	uint8_t		b; -	uint16_t	w; - -	/*    start           data           stop */ -	w = (0x000 << 0) | (byte << 1) | (0x001 << 9); - -	ao_arch_block_interrupts(); -	for (b = 0; b < 10; b++) { -		uint8_t	v = LED_PORT & ~(1 << AO_LED_SERIAL); -		v |= (w & 1) << AO_LED_SERIAL; -		LED_PORT = v; -		w >>= 1; - -		/* Carefully timed to hit around 9600 baud */ -		asm volatile ("nop"); -		asm volatile ("nop"); - -		asm volatile ("nop"); -		asm volatile ("nop"); -		asm volatile ("nop"); -		asm volatile ("nop"); -		asm volatile ("nop"); - -		asm volatile ("nop"); -		asm volatile ("nop"); -		asm volatile ("nop"); -		asm volatile ("nop"); -		asm volatile ("nop"); -	} -	ao_arch_release_interrupts(); -}  | 
