Diff: ttl_74HC595.cpp

Revision:

0:d78bcf13e9ed

Child:

1:db4af8094f4c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ttl_74HC595.cpp	Wed Apr 27 16:21:05 2011 +0000
@@ -0,0 +1,32 @@
+#include "mbed.h"
+#include "ttl_74HC595.h"
+//  Small library for controll the TTL74HC595, who is a SerialIn-ParallelOut
+//  Created by Michele Trombetta
+//  Copyright 2010 5OFT. All rights reserved.
+
+ttl_74HC595::ttl_74HC595(PinName DS, PinName SH_CLK, PinName ST_CLK, PinName OE): _DS(DS), _SH_CLK(SH_CLK), _ST_CLK(ST_CLK), _OE(OE) {
+
+}
+
+void ttl_74HC595::send_data(unsigned char data) {
+    for (char i=0; i<8; i++) {
+        _SH_CLK = 0;
+        _DS = data & 0x01;
+        data >>= 1;
+        _SH_CLK = 1;
+    }
+}
+
+void ttl_74HC595::store_data() {
+    _ST_CLK = 1;
+    _ST_CLK = 0;
+}
+
+void ttl_74HC595::send(unsigned char data) {
+    send_data(data);
+    store_data();
+}
+
+void ttl_74HC595::setOE(bool enable) {
+    _OE = enable ? 0 : 1;
+}
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