X-Git-Url: https://git.gag.com/?a=blobdiff_plain;ds=sidebyside;f=src%2Fstm%2Fao_debounce.c;fp=src%2Fstm%2Fao_debounce.c;h=0000000000000000000000000000000000000000;hb=988924b51980ad43e39bc4785a625ff25eb16449;hp=22cdf2303ab23ae81189d1c00c5c6f9e3ad9d191;hpb=72b6c699d355fcd41addb9919d846e63105b9db7;p=fw%2Faltos

diff --git a/src/stm/ao_debounce.c b/src/stm/ao_debounce.c
deleted file mode 100644
index 22cdf230..00000000
--- a/src/stm/ao_debounce.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- * Copyright © 2013 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_debounce.h>
-
-static uint8_t			ao_debounce_initialized;
-static uint8_t			ao_debounce_running;
-static struct ao_debounce	*ao_debounce;
-
-static void
-ao_debounce_on(void)
-{
-	stm_tim6.cr1 = ((0 << STM_TIM67_CR1_ARPE) |
-			(0 << STM_TIM67_CR1_OPM) |
-			(1 << STM_TIM67_CR1_URS) |
-			(0 << STM_TIM67_CR1_UDIS) |
-			(1 << STM_TIM67_CR1_CEN));
-}
-
-static void
-ao_debounce_off(void)
-{
-	stm_tim6.cr1 = ((0 << STM_TIM67_CR1_ARPE) |
-			(0 << STM_TIM67_CR1_OPM) |
-			(1 << STM_TIM67_CR1_URS) |
-			(0 << STM_TIM67_CR1_UDIS) |
-			(0 << STM_TIM67_CR1_CEN));
-}
-
-static void
-_ao_debounce_set(struct ao_debounce *debounce, uint8_t value)
-{
-	if (value != debounce->value) {
-		debounce->value = value;
-		debounce->_set(debounce, value);
-	}
-	_ao_debounce_stop(debounce);
-}
-
-/*
- * Get the current value, set the result when we've
- * reached the debounce count limit
- */
-static void
-_ao_debounce_check(struct ao_debounce *debounce)
-{
-	if (debounce->_get(debounce)) {
-		if (debounce->count < 0)
-			debounce->count = 0;
-		if (debounce->count < debounce->hold) {
-			if (++debounce->count == debounce->hold)
-				_ao_debounce_set(debounce, 1);
-		}
-	} else {
-		if (debounce->count > 0)
-			debounce->count = 0;
-		if (debounce->count > -debounce->hold) {
-			if (--debounce->count == -debounce->hold)
-				_ao_debounce_set(debounce, 0);
-		}
-	}
-}
-
-/*
- * Start monitoring one pin
- */
-void
-_ao_debounce_start(struct ao_debounce *debounce)
-{
-	if (debounce->running)
-		return;
-	debounce->running = 1;
-
-	/* Reset the counter */
-	debounce->count = 0;
-
-	/* Link into list */
-	debounce->next = ao_debounce;
-	ao_debounce = debounce;
-
-	/* Make sure the timer is running */
-	if (!ao_debounce_running++)
-		ao_debounce_on();
-
-	/* And go check the current value */
-	_ao_debounce_check(debounce);
-}
-
-/*
- * Stop monitoring one pin
- */
-void
-_ao_debounce_stop(struct ao_debounce *debounce)
-{
-	struct ao_debounce **prev;
-	if (!debounce->running)
-		return;
-
-	debounce->running = 0;
-
-	/* Unlink */
-	for (prev = &ao_debounce; (*prev); prev = &((*prev)->next)) {
-		if (*prev == debounce) {
-			*prev = debounce->next;
-			break;
-		}
-	}
-	debounce->next = NULL;
-
-	/* Turn off the timer if possible */
-	if (!--ao_debounce_running)
-		ao_debounce_off();
-}
-
-void stm_tim6_isr(void)
-{
-	struct ao_debounce	*debounce, *next;
-	if (stm_tim6.sr & (1 << STM_TIM67_SR_UIF)) {
-		stm_tim6.sr = 0;
-
-		/* Walk the current list, allowing the current
-		 * object to be removed from the list
-		 */
-		for (debounce = ao_debounce; debounce; debounce = next) {
-			next = debounce->next;
-			_ao_debounce_check(debounce);
-		}
-	}
-}
-
-/*
- * According to the STM clock-configuration, timers run
- * twice as fast as the APB1 clock *if* the APB1 prescaler
- * is greater than 1.
- */
-
-#if AO_APB1_PRESCALER > 1
-#define TIMER_23467_SCALER 2
-#else
-#define TIMER_23467_SCALER 1
-#endif
-
-#define TIMER_100kHz	((AO_PCLK1 * TIMER_23467_SCALER) / 100000)
-
-void
-ao_debounce_init(void)
-{
-	if (ao_debounce_initialized)
-		return;
-	ao_debounce_initialized = 1;
-
-	stm_nvic_set_enable(STM_ISR_TIM6_POS);
-	stm_nvic_set_priority(STM_ISR_TIM6_POS, AO_STM_NVIC_CLOCK_PRIORITY);
-
-	/* Turn on timer 6 */
-	stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_TIM6EN);
-
-	stm_tim6.psc = TIMER_100kHz;
-	stm_tim6.arr = 9;
-	stm_tim6.cnt = 0;
-
-	/* Enable update interrupt */
-	stm_tim6.dier = (1 << STM_TIM67_DIER_UIE);
-
-	/* Poke timer to reload values */
-	stm_tim6.egr |= (1 << STM_TIM67_EGR_UG);
-
-	stm_tim6.cr2 = (STM_TIM67_CR2_MMS_RESET << STM_TIM67_CR2_MMS);
-
-	/* And turn it off (for now) */
-	ao_debounce_off();
-}