Revision 0:3e9bf225bd52, committed 2017-01-25

Comitter:

abouillot

Date:

Wed Jan 25 08:53:15 2017 +0000

Child:

1:e38ff2920f0e

Commit message:

initial commit

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PwmReader.lib	Wed Jan 25 08:53:15 2017 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/users/abouillot/code/PwmReader/#15aa9d3aeb2e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jan 25 08:53:15 2017 +0000
@@ -0,0 +1,96 @@
+/*!
+ * Test application
+ *
+ * Read signal occupacy on a pin in a non blocking way using timer and interrupt
+ *
+ * Copyright (c) 2017 -  Alexandre Bouillot github.com/abouillot
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documnetation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to  whom the Software is
+ * furished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+ 
+ #include "mbed.h"
+#include "PwmReader.h"
+
+Timeout timer;
+DigitalOut my_pwm(LED1); // IO used by pwm_io function
+
+
+float delay = 5.0; // 5 sec
+
+int on_delay = 0;
+int off_delay = 0;
+
+void toggleOff(void);
+
+void toggleOn(void)
+{
+    my_pwm = 1;
+    timer.attach_us(toggleOff, on_delay);
+}
+
+void toggleOff(void)
+{
+    my_pwm = 0;
+    timer.attach_us(toggleOn, off_delay);
+}
+
+// p_us = signal period in micro_seconds
+// dc   = signal duty-cycle (0.0 to 1.0)
+void pwm_io(int p_us, float dc)
+{
+    timer.detach();
+    if ((p_us == 0) || (dc == 0)) {
+        my_pwm = 0;
+        return;
+    }
+    if (dc >= 1) {
+        my_pwm = 1;
+        return;
+    }
+    on_delay = (int)(p_us * dc);
+    off_delay = p_us - on_delay;
+    toggleOn();
+}
+
+
+
+int main()
+{
+    printf("************ PwmReader test program ****************\n");
+    int i, j;
+    PwmReader reader(USER_BUTTON);
+
+    while (1) {
+        for (i=0; i<=10; i++) {
+            for (j=1; j<=10; j++) {
+            printf("test with %f %% occupacy ", 0.10 * i);
+                printf("test with %ld ms period ", j * 10);
+
+                pwm_io(j * 10000, 0.10 * i); // 2s - 25%
+
+                reader.start();
+                wait(delay);
+                reader.stop();
+
+                printf("down:%f %% up:%f %%\n", reader.occupacyLow(), reader.occupacyHigh());
+
+            }
+        }
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Jan 25 08:53:15 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/ad3be0349dc5
\ No newline at end of file