Kyle Yancey / Mbed 2 deprecated SNES_Controller

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Dependencies:   mbed

main.cpp@1:2a346daf070f, 2017-10-05 (annotated)

Committer:
kyancey
Date:
Thu Oct 05 15:21:03 2017 +0000
Revision:
1:2a346daf070f
Parent:
0:2af5c09cf1ee 
Added some comments.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kyancey 0:2af5c09cf1ee 1 #include "mbed.h"
kyancey 0:2af5c09cf1ee 2
kyancey 0:2af5c09cf1ee 3
kyancey 0:2af5c09cf1ee 4 DigitalOut Data(D2);
kyancey 0:2af5c09cf1ee 5 DigitalIn Latch(D3);
kyancey 0:2af5c09cf1ee 6 DigitalIn Clock(D4);
kyancey 0:2af5c09cf1ee 7
kyancey 0:2af5c09cf1ee 8 void waitUntilHigh(DigitalIn x)
kyancey 0:2af5c09cf1ee 9 {
kyancey 0:2af5c09cf1ee 10 while(x != 1) {};
kyancey 0:2af5c09cf1ee 11 }
kyancey 0:2af5c09cf1ee 12
kyancey 0:2af5c09cf1ee 13 void waitUntilLow(DigitalIn x)
kyancey 0:2af5c09cf1ee 14 {
kyancey 0:2af5c09cf1ee 15 while(x == 1) {};
kyancey 0:2af5c09cf1ee 16 }
kyancey 0:2af5c09cf1ee 17
kyancey 0:2af5c09cf1ee 18 void sendButton(int button)
kyancey 0:2af5c09cf1ee 19 {
kyancey 0:2af5c09cf1ee 20 Data = button;
kyancey 0:2af5c09cf1ee 21 waitUntilLow(Clock);
kyancey 0:2af5c09cf1ee 22 waitUntilHigh(Clock);
kyancey 0:2af5c09cf1ee 23 }
kyancey 0:2af5c09cf1ee 24
kyancey 1:2a346daf070f 25 // The SNES expects unpressed buttons to have a high state.
kyancey 1:2a346daf070f 26 // 1 = unpressed, 0 = pressed
kyancey 0:2af5c09cf1ee 27 void sendButtonsPressed(int b, int y, int select, int start,
kyancey 0:2af5c09cf1ee 28 int up, int down, int left, int right,
kyancey 0:2af5c09cf1ee 29 int a, int x, int l1, int r1)
kyancey 0:2af5c09cf1ee 30 {
kyancey 1:2a346daf070f 31 Data = 1; // Seems sensible to start with data being high
kyancey 0:2af5c09cf1ee 32 waitUntilHigh(Latch);
kyancey 0:2af5c09cf1ee 33 waitUntilLow(Latch);
kyancey 0:2af5c09cf1ee 34
kyancey 0:2af5c09cf1ee 35 sendButton(b);
kyancey 0:2af5c09cf1ee 36 sendButton(y);
kyancey 0:2af5c09cf1ee 37 sendButton(select);
kyancey 0:2af5c09cf1ee 38 sendButton(start);
kyancey 0:2af5c09cf1ee 39 sendButton(up);
kyancey 0:2af5c09cf1ee 40 sendButton(down);
kyancey 0:2af5c09cf1ee 41 sendButton(left);
kyancey 0:2af5c09cf1ee 42 sendButton(right);
kyancey 0:2af5c09cf1ee 43 sendButton(a);
kyancey 0:2af5c09cf1ee 44 sendButton(x);
kyancey 0:2af5c09cf1ee 45 sendButton(l1);
kyancey 0:2af5c09cf1ee 46 sendButton(r1);
kyancey 0:2af5c09cf1ee 47 }
kyancey 0:2af5c09cf1ee 48
kyancey 0:2af5c09cf1ee 49 int main()
kyancey 0:2af5c09cf1ee 50 {
kyancey 0:2af5c09cf1ee 51 while(1) {
kyancey 1:2a346daf070f 52 // Repeatedly press A
kyancey 0:2af5c09cf1ee 53 sendButtonsPressed(1, 1, 1, 1, //b,y,select,start
kyancey 0:2af5c09cf1ee 54 1, 1, 1, 1, //up,down,left,right
kyancey 0:2af5c09cf1ee 55 0, 1, 1, 1); //a,x,l1,r1
kyancey 0:2af5c09cf1ee 56
kyancey 0:2af5c09cf1ee 57 sendButtonsPressed(1, 1, 1, 1, //b,y,select,start
kyancey 0:2af5c09cf1ee 58 1, 1, 1, 1, //up,down,left,right
kyancey 0:2af5c09cf1ee 59 1, 1, 1, 1); //a,x,l1,r1
kyancey 0:2af5c09cf1ee 60 }
kyancey 0:2af5c09cf1ee 61 }