X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fcc1111%2Fao_timer.c;fp=src%2Fcc1111%2Fao_timer.c;h=0000000000000000000000000000000000000000;hp=a3d454da252a75385bd0b5e30136dd3e92da5ffd;hb=0686a7b8aec524d81bda4c572549a3a068ce0eed;hpb=6aa451ce81bfdfe679e3f9902043a5f0d235c745 diff --git a/src/cc1111/ao_timer.c b/src/cc1111/ao_timer.c deleted file mode 100644 index a3d454da..00000000 --- a/src/cc1111/ao_timer.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * Copyright © 2009 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; 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 - * 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" - -volatile __data uint16_t ao_tick_count; - -uint16_t ao_time(void) __critical -{ - return ao_tick_count; -} - -#define T1_CLOCK_DIVISOR 8 /* 24e6/8 = 3e6 */ -#define T1_SAMPLE_TIME 30000 /* 3e6/30000 = 100 */ - -#if HAS_ADC -volatile __data uint8_t ao_adc_interval = 1; -volatile __data uint8_t ao_adc_count; -#endif - -void ao_timer_isr(void) __interrupt 9 -{ - ++ao_tick_count; -#if HAS_ADC - if (++ao_adc_count == ao_adc_interval) { - ao_adc_count = 0; - ao_adc_poll(); -#if (AO_DATA_ALL & ~(AO_DATA_ADC)) - ao_wakeup(DATA_TO_XDATA(&ao_adc_count)); -#endif - } -#endif -} - -#if HAS_ADC -void -ao_timer_set_adc_interval(uint8_t interval) __critical -{ - ao_adc_interval = interval; - ao_adc_count = 0; -} -#endif - -void -ao_timer_init(void) -{ - /* NOTE: This uses a timer only present on cc1111 architecture. */ - - /* disable timer 1 */ -/* T1CTL = 0; */ - - /* set the sample rate */ - T1CC0H = T1_SAMPLE_TIME >> 8; - T1CC0L = (uint8_t) T1_SAMPLE_TIME; - - T1CCTL0 = T1CCTL_MODE_COMPARE; - T1CCTL1 = 0; - T1CCTL2 = 0; - - /* clear timer value */ - T1CNTL = 0; - - /* enable overflow interrupt */ - OVFIM = 1; - /* enable timer 1 interrupt */ - T1IE = 1; - - /* enable timer 1 in module mode, dividing by 8 */ - T1CTL = T1CTL_MODE_MODULO | T1CTL_DIV_8; -} - -#ifndef NEEDS_CC1111_CLOCK_HACK -#define NEEDS_CC1111_CLOCK_HACK 1 -#endif - -#if NEEDS_CC1111_CLOCK_HACK -static void -ao_clock_delay(void) -{ - uint16_t i = 0; - - while (--i) - ao_arch_nop(); -} -#endif - -/* - * AltOS always cranks the clock to the max frequency - */ -void -ao_clock_init(void) -{ -#if NEEDS_CC1111_CLOCK_HACK - /* Power up both oscillators */ - SLEEP &= ~(SLEEP_OSC_PD); - - /* Switch to the HFRC oscillator */ - CLKCON = (CLKCON & ~CLKCON_OSC_MASK) | (CLKCON_OSC_RC); - - /* Wait for the HFRC oscillator to be stable */ - while (!(SLEEP & SLEEP_HFRC_STB)) - ; - - /* Delay for 'a while' waiting for the crystal to - * stabilize -- the XOSC_STB bit isn't reliable - * - * http://www.ti.com/lit/er/swrz022c/swrz022c.pdf - */ - - ao_clock_delay(); -#endif - - /* Switch system clock to crystal oscilator */ - CLKCON = (CLKCON & ~CLKCON_OSC_MASK) | (CLKCON_OSC_XTAL); - - /* Wait for the HFRC oscillator to be stable */ - while (!(SLEEP & SLEEP_XOSC_STB)) - ; - - /* Power down the unused HFRC oscillator */ - SLEEP |= SLEEP_OSC_PD; - - /* Crank up the timer tick and system clock speed */ - CLKCON = ((CLKCON & ~(CLKCON_TICKSPD_MASK | CLKCON_CLKSPD_MASK)) | - (CLKCON_TICKSPD_1 | CLKCON_CLKSPD_1)); - - while ((CLKCON & (CLKCON_TICKSPD_MASK|CLKCON_CLKSPD_MASK)) != - (CLKCON_TICKSPD_1 | CLKCON_CLKSPD_1)) - ; -}