marco valli / CD74HC165E

vvv

Dependents:   Enrico_newproject_copy

CD74HC165E.cpp@0:5ec20ee3f455, 2018-03-07 (annotated)

Committer:
billycorgan123
Date:
Wed Mar 07 21:11:16 2018 +0000
Revision:
0:5ec20ee3f455
nuova update 7 marzo 2018;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
billycorgan123 0:5ec20ee3f455 1 #include "CD74HC165E.h"
billycorgan123 0:5ec20ee3f455 2
billycorgan123 0:5ec20ee3f455 3 #define HIGH 1
billycorgan123 0:5ec20ee3f455 4 #define LOW 0
billycorgan123 0:5ec20ee3f455 5
billycorgan123 0:5ec20ee3f455 6 int WaitingTime=1;
billycorgan123 0:5ec20ee3f455 7 //CD74HC165E
billycorgan123 0:5ec20ee3f455 8 //PL pin 1
billycorgan123 0:5ec20ee3f455 9 //CP pin 2
billycorgan123 0:5ec20ee3f455 10 //CE pin 15
billycorgan123 0:5ec20ee3f455 11 //Q7 pin 9
billycorgan123 0:5ec20ee3f455 12
billycorgan123 0:5ec20ee3f455 13
billycorgan123 0:5ec20ee3f455 14
billycorgan123 0:5ec20ee3f455 15 CD74HC165E::CD74HC165E (PinName PL, PinName CP, PinName Q7) : _PL(PL), _CP(CP), _Q7(Q7)
billycorgan123 0:5ec20ee3f455 16 {
billycorgan123 0:5ec20ee3f455 17 _PL = LOW;
billycorgan123 0:5ec20ee3f455 18 _CP = LOW;
billycorgan123 0:5ec20ee3f455 19 //_Q7 no perchè è una uscita e non ingresso
billycorgan123 0:5ec20ee3f455 20 }
billycorgan123 0:5ec20ee3f455 21
billycorgan123 0:5ec20ee3f455 22 bool* CD74HC165E::Read() {
billycorgan123 0:5ec20ee3f455 23 //achieving data D0-D7
billycorgan123 0:5ec20ee3f455 24 _CP = LOW;
billycorgan123 0:5ec20ee3f455 25 wait_us(WaitingTime);
billycorgan123 0:5ec20ee3f455 26 _PL = LOW;
billycorgan123 0:5ec20ee3f455 27 wait_us(WaitingTime*5); // 5 microseconds to be sure to achieve all data D0-D7
billycorgan123 0:5ec20ee3f455 28 _PL = HIGH;
billycorgan123 0:5ec20ee3f455 29
billycorgan123 0:5ec20ee3f455 30 //store data in array
billycorgan123 0:5ec20ee3f455 31 static bool myDataIn[8] = {1,0,1,0,1,0,1,0};
billycorgan123 0:5ec20ee3f455 32 wait_us(WaitingTime);
billycorgan123 0:5ec20ee3f455 33 for (int i=7; i>=0; i--) {
billycorgan123 0:5ec20ee3f455 34 _CP = LOW;
billycorgan123 0:5ec20ee3f455 35 wait_us(WaitingTime);
billycorgan123 0:5ec20ee3f455 36 myDataIn[i] = _Q7;
billycorgan123 0:5ec20ee3f455 37 _CP = HIGH;
billycorgan123 0:5ec20ee3f455 38 wait_us(WaitingTime);
billycorgan123 0:5ec20ee3f455 39 }
billycorgan123 0:5ec20ee3f455 40
billycorgan123 0:5ec20ee3f455 41 return myDataIn;
billycorgan123 0:5ec20ee3f455 42 }