Ivo van Poorten / Mbed 2 deprecated SiLabs_C2

Basis for the C2 protocol from Silicon Labs.

Dependencies:   mbed

main.cpp@1:7a82f806fe92, 2014-05-24 (annotated)

Committer:
Ivop
Date:
Sat May 24 11:54:33 2014 +0000
Revision:
1:7a82f806fe92
Parent:
0:902f10e5d3e0
Child:
2:9092d0d1558b
license at the top, reset and strobe functions

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Ivop 1:7a82f806fe92 1 /*
Ivop 1:7a82f806fe92 2 * SiLabs C2 Protocol on mbed pins p5/p6
Ivop 1:7a82f806fe92 3 *
Ivop 1:7a82f806fe92 4 * Copyright (c) 2014, Ivo van Poorten <ivopvp@gmail.com>
Ivop 1:7a82f806fe92 5 * All rights reserved.
Ivop 1:7a82f806fe92 6 *
Ivop 1:7a82f806fe92 7 * Redistribution and use in source and binary forms, with or without
Ivop 1:7a82f806fe92 8 * modification, are permitted provided that the following conditions
Ivop 1:7a82f806fe92 9 * are met:
Ivop 1:7a82f806fe92 10 * 1. Redistributions of source code must retain the above copyright
Ivop 1:7a82f806fe92 11 * notice, this list of conditions and the following disclaimer.
Ivop 1:7a82f806fe92 12 * 2. Redistributions in binary form must reproduce the above copyright
Ivop 1:7a82f806fe92 13 * notice, this list of conditions and the following disclaimer in the
Ivop 1:7a82f806fe92 14 * documentation and/or other materials provided with the distribution.
Ivop 1:7a82f806fe92 15 *
Ivop 1:7a82f806fe92 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
Ivop 1:7a82f806fe92 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
Ivop 1:7a82f806fe92 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
Ivop 1:7a82f806fe92 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
Ivop 1:7a82f806fe92 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
Ivop 1:7a82f806fe92 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Ivop 1:7a82f806fe92 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Ivop 1:7a82f806fe92 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Ivop 1:7a82f806fe92 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
Ivop 1:7a82f806fe92 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Ivop 1:7a82f806fe92 26 */
Ivop 1:7a82f806fe92 27
Ivop 0:902f10e5d3e0 28 #include "mbed.h"
Ivop 0:902f10e5d3e0 29
Ivop 0:902f10e5d3e0 30 DigitalOut c2ck(p5);
Ivop 0:902f10e5d3e0 31 DigitalInOut c2d(p6);
Ivop 0:902f10e5d3e0 32
Ivop 1:7a82f806fe92 33 static void c2ck_reset(void) {
Ivop 1:7a82f806fe92 34 c2ck = 0;
Ivop 1:7a82f806fe92 35 wait_us(25);
Ivop 1:7a82f806fe92 36 c2ck = 1;
Ivop 1:7a82f806fe92 37 wait_us(1);
Ivop 1:7a82f806fe92 38 }
Ivop 1:7a82f806fe92 39
Ivop 1:7a82f806fe92 40 static void c2ck_strobe(void) {
Ivop 1:7a82f806fe92 41 c2ck = 0;
Ivop 1:7a82f806fe92 42 wait_us(1);
Ivop 1:7a82f806fe92 43 c2ck = 1;
Ivop 1:7a82f806fe92 44 wait_us(1);
Ivop 1:7a82f806fe92 45 }
Ivop 1:7a82f806fe92 46
Ivop 1:7a82f806fe92 47 // Four basic C2 Instructions
Ivop 1:7a82f806fe92 48 //
Ivop 1:7a82f806fe92 49 // 00b Data Read
Ivop 1:7a82f806fe92 50 // 01b Data Write
Ivop 1:7a82f806fe92 51 // 10b Address Read
Ivop 1:7a82f806fe92 52 // 11b Address Write
Ivop 1:7a82f806fe92 53
Ivop 1:7a82f806fe92 54
Ivop 0:902f10e5d3e0 55 int main() {
Ivop 1:7a82f806fe92 56 int c;
Ivop 1:7a82f806fe92 57
Ivop 1:7a82f806fe92 58 c2d.input();
Ivop 1:7a82f806fe92 59 c2ck = 1;
Ivop 1:7a82f806fe92 60
Ivop 1:7a82f806fe92 61 printf("SiLabs C2 Protocol\n\r\n\r");
Ivop 1:7a82f806fe92 62 printf("Connect C2CK (clock) to p5 and C2D (data) to p6\n\r\n\r");
Ivop 1:7a82f806fe92 63 printf("Press any key to continue\n\r");
Ivop 1:7a82f806fe92 64
Ivop 1:7a82f806fe92 65 c = getc(stdin);
Ivop 1:7a82f806fe92 66
Ivop 1:7a82f806fe92 67 printf("\n\rHello, world\n\r");
Ivop 0:902f10e5d3e0 68 }