Diff: led_tsk.cpp

Revision:

0:79e298c7d4b9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/led_tsk.cpp	Sun Aug 25 10:28:46 2013 +0000
@@ -0,0 +1,105 @@
+/*
+#
+# Copyright (C) 2010-2013, audin
+# 2013/08: Modify for mbed for LPC1114FN28
+# 2013/07: Modify for LPCOpen Platform.
+# 2011/04, 2012/11
+# 2010/11
+# http://avr.paslog.jp
+# This file is licensed under the MIT License.
+#
+*/
+
+#include "mbed.h"
+#include "led_tsk.h"
+#include "Scheduler.h"
+
+static int max_val	= 0;
+static int val		= 0;
+#define sio_get_led_blink_speed()	9 /* fixed preiod */
+
+/* for CQ MyARM ,lpc1114fn28 */
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+#define led1_on()		led1=0	/*  Negative on */
+#define led1_off()		led1=1
+#define led2_on()		led2=1
+#define led2_off()		led2=0
+
+/*******************
+
+* LED1 init
+
+ *******************/
+void led_init(void)
+{
+    led1_off();									/*  first off	*/
+}
+
+/*******************
+
+* Fake PWM
+
+ *******************/
+static void pwm( int ms )
+{
+    led1_on();
+    taskWait( ms );
+    led1_off();
+    taskWait( max_val - val);
+}
+
+/*******************
+
+* LED task
+
+ *******************/
+void led_task( void)
+{
+    led_tsk( (void *)0 );	/* Just stub */
+}
+
+void led_tsk( void *pvParameters )
+{
+    ( void ) pvParameters;								// not used
+    led_init();
+    const int MIN_VAL	= 0;
+    static int dir		= 1;
+    while( 1 ) {
+        if( ( val >= max_val) || ( val <= MIN_VAL) ) {
+            max_val = sio_get_led_blink_speed() + 3 ;	// change period
+            max_val <<= 1;								// adjust time
+            if( val <= MIN_VAL ) {
+                dir = 1;
+                taskWait( 1000 );							// wait 1src if led off
+            } else {
+                dir = -1;
+                val = max_val;
+            }
+        }
+        val += dir;
+        pwm( val );
+    }
+}
+
+/*******************
+
+* LED2 init
+
+ *******************/
+void led2_init(void)
+{
+    led2_off();									/*  first off	*/
+}
+
+void led2_task( void )
+{
+    led2_init();
+    while( 1 ) {
+        led2_on();
+        taskWait(2000);
+        led2_off();
+        taskWait(2000);
+    }
+}
+