yuto kamo / ShiftReg

ShiftReg library (74HC595, NUJ3711)

ShiftReg.cpp@0:5f1670338bef, 2015-10-24 (annotated)

Committer:
kysiki
Date:
Sat Oct 24 16:30:11 2015 +0000
Revision:
0:5f1670338bef
Child:
1:3741bc0fbba8
first commit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kysiki 0:5f1670338bef 1 #include "ShiftReg.h"
kysiki 0:5f1670338bef 2 #include "mbed.h"
kysiki 0:5f1670338bef 3
kysiki 0:5f1670338bef 4 ShiftReg::ShiftReg(PinName dataPin, PinName stbPin,
kysiki 0:5f1670338bef 5 PinName clkPin, PinName clrPin)
kysiki 0:5f1670338bef 6 :
kysiki 0:5f1670338bef 7 DATA(dataPin),
kysiki 0:5f1670338bef 8 STB(stbPin),
kysiki 0:5f1670338bef 9 CLK(clkPin),
kysiki 0:5f1670338bef 10 CLR(clrPin)
kysiki 0:5f1670338bef 11 {
kysiki 0:5f1670338bef 12 DATA = 1;
kysiki 0:5f1670338bef 13 STB = 1;
kysiki 0:5f1670338bef 14 CLK = 1;
kysiki 0:5f1670338bef 15 CLR = 1;
kysiki 0:5f1670338bef 16 }
kysiki 0:5f1670338bef 17
kysiki 0:5f1670338bef 18 void ShiftReg::send_data(uint8_t data) {
kysiki 0:5f1670338bef 19 shiftOut(data);
kysiki 0:5f1670338bef 20 wait_us(1);
kysiki 0:5f1670338bef 21 #ifdef HC595
kysiki 0:5f1670338bef 22 STB = 0;
kysiki 0:5f1670338bef 23 wait_us(1);
kysiki 0:5f1670338bef 24 STB = 1;
kysiki 0:5f1670338bef 25 #elif NJU3711
kysiki 0:5f1670338bef 26 STB = 1;
kysiki 0:5f1670338bef 27 wait_us(1);
kysiki 0:5f1670338bef 28 STB = 0;
kysiki 0:5f1670338bef 29 #else
kysiki 0:5f1670338bef 30 printf("not support\n");
kysiki 0:5f1670338bef 31 #endif
kysiki 0:5f1670338bef 32 wait_us(1);
kysiki 0:5f1670338bef 33 }
kysiki 0:5f1670338bef 34
kysiki 0:5f1670338bef 35 void ShiftReg::shiftOut(uint8_t data) {
kysiki 0:5f1670338bef 36 for(int i = 0; i < 8; i++) {
kysiki 0:5f1670338bef 37 DATA = (data & (1 << i));
kysiki 0:5f1670338bef 38 CLK = 0;
kysiki 0:5f1670338bef 39 CLK = 1;
kysiki 0:5f1670338bef 40 }
kysiki 0:5f1670338bef 41 }