*
* 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.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#include "ao.h"
-static volatile __data uint16_t ao_tick_count;
+volatile __data uint16_t ao_tick_count;
uint16_t ao_time(void)
{
return v;
}
-static __xdata uint8_t ao_forever;
-
-void
-ao_delay(uint16_t ticks)
-{
- ao_alarm(ticks);
- ao_sleep(&ao_forever);
-}
-
#define T1_CLOCK_DIVISOR 8 /* 24e6/8 = 3e6 */
#define T1_SAMPLE_TIME 30000 /* 3e6/30000 = 100 */
TIMSK1 = (1 << OCIE1A); /* Interrupt on compare match */
}
-
-/*
- * AltOS always cranks the clock to the max frequency
- */
-void
-ao_clock_init(void)
-{
- /* disable RC clock */
- CLKSEL0 &= ~(1 << RCE);
-
- /* Disable PLL */
- PLLCSR &= ~(1 << PLLE);
-
- /* Enable external clock */
- CLKSEL0 |= (1 << EXTE);
-
- /* wait for external clock to be ready */
- while ((CLKSTA & (1 << EXTON)) == 0)
- ;
-
- /* select external clock */
- CLKSEL0 |= (1 << CLKS);
-
- /* Disable the clock prescaler */
- cli();
- CLKPR = (1 << CLKPCE);
-
- /* Always run the system clock at 8MHz */
-#if AVR_CLOCK > 12000000UL
- CLKPR = 1;
-#else
- CLKPR = 0;
-#endif
- sei();
-
- /* Set up the PLL to use the crystal */
-
- /* Use primary system clock as PLL source */
- PLLFRQ = ((0 << PINMUX) | /* Use primary clock */
- (0 << PLLUSB) | /* No divide by 2 for USB */
- (0 << PLLTM0) | /* Disable high speed timer */
- (0x4 << PDIV0)); /* 48MHz PLL clock */
-
- /* Set the frequency of the crystal */
-#if AVR_CLOCK > 12000000UL
- PLLCSR |= (1 << PINDIV); /* For 16MHz crystal on Teensy board */
-#else
- PLLCSR &= ~(1 << PINDIV); /* For 8MHz crystal on TeleScience board */
-#endif
-
- /* Enable the PLL */
- PLLCSR |= (1 << PLLE);
- while (!(PLLCSR & (1 << PLOCK)))
- ;
-
- set_sleep_mode(SLEEP_MODE_IDLE);
- sleep_enable();
-}