Ivo van Poorten
/
opus-una
A Small Cooperative Multitasking Kernel
timer-mbed.c@0:73b89fc74e9f, 2011-07-24 (annotated)
- Committer:
- Ivop
- Date:
- Sun Jul 24 17:15:42 2011 +0000
- Revision:
- 0:73b89fc74e9f
first release
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Ivop | 0:73b89fc74e9f | 1 | /* Opus Una - A Small Cooperative Multitasking Kernel in C |
Ivop | 0:73b89fc74e9f | 2 | * |
Ivop | 0:73b89fc74e9f | 3 | * Copyright (C) 2011 by Ivo van Poorten <ivop@euronet.nl> |
Ivop | 0:73b89fc74e9f | 4 | * This file is licensed under the terms of the GNU Lesser |
Ivop | 0:73b89fc74e9f | 5 | * General Public License, version 3. |
Ivop | 0:73b89fc74e9f | 6 | */ |
Ivop | 0:73b89fc74e9f | 7 | |
Ivop | 0:73b89fc74e9f | 8 | #include "timer.h" |
Ivop | 0:73b89fc74e9f | 9 | #include "kernel.h" |
Ivop | 0:73b89fc74e9f | 10 | #include "fastlib/systick.h" |
Ivop | 0:73b89fc74e9f | 11 | |
Ivop | 0:73b89fc74e9f | 12 | extern "C" void SysTick_Handler(void) __irq { |
Ivop | 0:73b89fc74e9f | 13 | ou_ticks++; |
Ivop | 0:73b89fc74e9f | 14 | ou_update_tasks(); |
Ivop | 0:73b89fc74e9f | 15 | } |
Ivop | 0:73b89fc74e9f | 16 | |
Ivop | 0:73b89fc74e9f | 17 | void ou_start_timer(void) { |
Ivop | 0:73b89fc74e9f | 18 | fl_systick_set_reload_value((96000000/100)-1); // 1/100th of a second (10ms) |
Ivop | 0:73b89fc74e9f | 19 | fl_systick_control(FL_ENABLE, FL_ENABLE, FL_ENABLE); // timer, irq, use cclk |
Ivop | 0:73b89fc74e9f | 20 | } |
Ivop | 0:73b89fc74e9f | 21 | |
Ivop | 0:73b89fc74e9f | 22 | void ou_idle(void) { |
Ivop | 0:73b89fc74e9f | 23 | // save power/cpu time/et cetera... |
Ivop | 0:73b89fc74e9f | 24 | } |