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
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
-Parameters:
+Tasking API:
- * Multi-tasking
- * Non-preemptive
- * Unix-style sleep/wakeup scheduling
- * Strict round-robin, no priorities
+ * Multi-tasking
+ * Non-preemptive
+ * Unix-style sleep/wakeup scheduling
+ * Strict round-robin, no priorities
-API:
+ uint8_t ao_sleep(void *wchan)
- void ao_sleep(void *wchan)
-
- Puts current task to sleep. Will wake up when wchan is signalled
+ Puts current task to sleep. Will wake up when wchan is
+ signalled (returning 0), or when an alarm has expired
+ (returning 1).
void ao_wakeup(void *wchan)
Any fatal error should call this function, which can
display the error code in some cryptic fashion.
+
+ void ao_wake_task(struct ao_task *task)
+
+ Wake the task as if the wchan it is waiting on had
+ been signalled.
+
+ void ao_alarm(uint16_t delay)
+
+ Queue an alarm to expire 'delay' ticks in the future.
+ The alarm will cause the task to wake from ao_sleep
+ and return 1. Alarms are cancelled if the task is
+ awoken by ao_wakeup or ao_wake_task.
+
+ void ao_exit(void)
+
+ Stop the current task and remove it from the list of
+ available tasks.
+
+Timer API
+
+ * Regular timer ticks (at 100Hz, by default)
+ * All time values are in ticks
+
+ uint16_t ao_time(void)
+
+ Returns the curent tick count
+
+ void ao_delay(uint16_t delay)
+
+ Suspend task execution for 'delay' ticks.
+
+DMA API
+
+ * Static DMA entry allocation
+
+ uint8_t ao_dma_alloc(uint8_t *done)
+
+ Allocates one of the 5 DMA units on the cc1111
+ processor. When this DMA unit is finished, it will
+ set *done to 1 and wakeup anyone waiting on that.
+
+ void ao_dma_set_transfer(uint8_t id, void *src, void *dst,
+ uint16_t count, uint8_t cfg0, uint8_t cfg1)
+
+ Prepares the specified DMA unit for operation.
+
+ void ao_dma_start(uint8_t id)
+
+ Start DMA on the specified channel.
+
+ void ao_dma_trigger(uint8_t id)
+
+ Manually trigger a DMA channel
+
+ void ao_dma_abort(uint8_t id)
+
+ Abort a pending DMA transfer, signalling
+ that by setting the associated 'done' to
+ AO_DMA_ABORTED and waking any task
+ sleeping on that.