Diff: TestTrimpot.cpp

Revision:

2:2f4b7535ceb3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TestTrimpot.cpp	Thu Aug 28 09:36:13 2014 +0000
@@ -0,0 +1,63 @@
+/*
+ *  Copyright 2013 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/******************************************************************************
+ * Includes
+ *****************************************************************************/
+
+#include "mbed.h"
+#include "TestTrimpot.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+#define MIN_VALUE  (0.010f)
+#define MAX_VALUE  (0.990f)
+
+/******************************************************************************
+ * Public Functions
+ *****************************************************************************/
+
+bool TestTrimpot::runTest() {
+    AnalogIn trimpot(p15);
+    bool min = false;
+    bool max = false;
+
+    printf("Reading trimpot for 5 seconds...\n");  
+
+    // Reads the analog value of the right trimpot every 100ms for
+    // up to five seconds or until both end limit have been reached.
+    for (int i = 0; i < 50; i++) {
+        float f = trimpot.read();
+        printf("Trimpot = %.3f\n", f);
+        if (f < MIN_VALUE) {
+            min = true;
+        } else if (f > MAX_VALUE) {
+            max = true;
+        }
+        if (min && max) {
+            printf("Test passed\n");
+            return true;
+        }
+
+        wait(0.1);
+    }
+    printf("Trimpot does not reach limits (%.3f - %.3f)!\n", MIN_VALUE, MAX_VALUE);
+    return false;
+}
+
+