+/*
+ * Copyright © 2011, 2012, Titanium Mirror, Inc..
+ * All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * - Neither the name of Titanium Mirror, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
/*
* File: tmr.h
*
* }
*/
-
#ifndef _TMR_H
#define _TMR_H
/* FIXME: this may not be atomic WRT ISR */
#define tmr_periodic(t) (bit_get(_tmr_periodic, (t)))
-/* Start a timer, expecting it to fire in elapsed ticks */
+/* Start a timer, expecting it to fire in elapsed ticks, user code */
void tmr_start(tmr_bitno_t t, tmr_time_t elapsed);
/* Start a timer, expecting it to fire in elapsed ticks from t0 */
nei(); \
} while(0)
-/* Return 1 if the timer has fired, resetting the fired bit */
+/* Return 1 if the timer has fired, resetting the fired bit, user code */
bit tmr_fired(tmr_bitno_t t);
/* Return the current number of timer ticks, for use outside ISR */
/* Wait for c clocks, 0 <= c < 128. */
#define tmr_cwait(c) \
do { \
- unsigned t0 = TMR0; \
- while ((unsigned)(TMR0 - t0) <= c); /* cast prevents integral promotion */ \
+ unsigned char t0 = TMR0; \
+ while ((unsigned char)(TMR0 - t0) <= c); \
} while (0)
/* Wait for a number of us. This is pretty accurate. */