Diff: ShiftReg.cpp

Revision:

0:5f1670338bef

Child:

1:3741bc0fbba8

diff -r 000000000000 -r 5f1670338bef ShiftReg.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ShiftReg.cpp	Sat Oct 24 16:30:11 2015 +0000
@@ -0,0 +1,41 @@
+#include "ShiftReg.h"
+#include "mbed.h"
+ 
+ShiftReg::ShiftReg(PinName dataPin, PinName stbPin, 
+                   PinName clkPin, PinName clrPin)
+: 
+    DATA(dataPin),
+    STB(stbPin),
+    CLK(clkPin),
+    CLR(clrPin)
+{
+    DATA = 1;
+    STB  = 1;
+    CLK  = 1;
+    CLR  = 1;
+}
+ 
+void ShiftReg::send_data(uint8_t data) {
+    shiftOut(data);
+    wait_us(1);
+#ifdef HC595
+    STB = 0;
+    wait_us(1);
+    STB = 1;
+#elif NJU3711
+    STB = 1;
+    wait_us(1);
+    STB = 0;
+#else
+    printf("not support\n");
+#endif
+    wait_us(1);
+}
+
+void ShiftReg::shiftOut(uint8_t data) {
+    for(int i = 0; i < 8; i++) {
+        DATA = (data & (1 << i));
+        CLK = 0;
+        CLK = 1;
+    }
+}
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