Diff: TestShiftreg.cpp

Revision:

2:2f4b7535ceb3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TestShiftreg.cpp	Thu Aug 28 09:36:13 2014 +0000
@@ -0,0 +1,80 @@
+/*
+ *  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 "TestShiftreg.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+
+/******************************************************************************
+ * Public Functions
+ *****************************************************************************/
+
+TestShiftreg::TestShiftreg(PinName mosi, PinName miso, PinName sclk, PinName cs) :
+    _spi(mosi, miso, sclk), _cs(cs) {
+        
+    _cs = 1; // to get it in a known state
+    output(0x00);
+}
+
+bool TestShiftreg::runTest() {
+    output(0x1);
+    wait(0.1);
+    output(0x2);
+    wait(0.1);
+    output(0x4);
+    wait(0.1);
+    output(0x8);
+    wait(0.1);
+    output(0x10);
+    wait(0.1);
+    output(0x20);
+    wait(0.1);
+    output(0x40);
+    wait(0.1);
+    output(0x80);
+    wait(0.1);
+    output(0x40);
+    wait(0.1);
+    output(0x20);
+    wait(0.1);
+    output(0x10);
+    wait(0.1);
+    output(0x8);
+    wait(0.1);
+    output(0x4);
+    wait(0.1);
+    output(0x2);
+    wait(0.1);
+    output(0x1);
+    wait(0.1);
+    output(0x0);
+    return true;
+}
+
+void TestShiftreg::output(uint8_t value) {
+    _cs = 0;
+    _spi.write(value);
+    _cs = 1;
+}
+