kohacraft Lab / Mbed 2 deprecated kc_tv_hack

tv hack http://kohacraft.com/archives/1037090651.html

Dependencies:   MCP4922 mbed

main.cpp@0:d341bd9e7da7, 2015-08-25 (annotated)

Committer:
kohacraft
Date:
Tue Aug 25 21:21:29 2015 +0000
Revision:
0:d341bd9e7da7
ver1.0;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kohacraft 0:d341bd9e7da7 1 #include "mbed.h"
kohacraft 0:d341bd9e7da7 2 #include "MCP4922.h"
kohacraft 0:d341bd9e7da7 3 DigitalOut myled(LED1);
kohacraft 0:d341bd9e7da7 4 MCP4922 ad(0, dp9, dp4); //spiチャンネル1 /CS /LAT
kohacraft 0:d341bd9e7da7 5
kohacraft 0:d341bd9e7da7 6 // x,y = -1〜+1 をADのフルレンジへ変換し出力する
kohacraft 0:d341bd9e7da7 7 void outAd( float x , float y )
kohacraft 0:d341bd9e7da7 8 {
kohacraft 0:d341bd9e7da7 9 int xtemp , ytemp;
kohacraft 0:d341bd9e7da7 10 xtemp = (int)(2048.0 * x + 2047.0);
kohacraft 0:d341bd9e7da7 11 if( xtemp < 0 )
kohacraft 0:d341bd9e7da7 12 xtemp = 0;
kohacraft 0:d341bd9e7da7 13 if( xtemp > 4095 )
kohacraft 0:d341bd9e7da7 14 xtemp = 4095;
kohacraft 0:d341bd9e7da7 15
kohacraft 0:d341bd9e7da7 16 ytemp = (int)(2048.0 * y + 2047.0);
kohacraft 0:d341bd9e7da7 17 if( ytemp < 0 )
kohacraft 0:d341bd9e7da7 18 ytemp = 0;
kohacraft 0:d341bd9e7da7 19 if( ytemp > 4095 )
kohacraft 0:d341bd9e7da7 20 ytemp = 4095;
kohacraft 0:d341bd9e7da7 21
kohacraft 0:d341bd9e7da7 22 ad.select(0);
kohacraft 0:d341bd9e7da7 23 ad.write( xtemp );
kohacraft 0:d341bd9e7da7 24 ad.select(1);
kohacraft 0:d341bd9e7da7 25 ad.write( ytemp );
kohacraft 0:d341bd9e7da7 26 ad.update();
kohacraft 0:d341bd9e7da7 27 }
kohacraft 0:d341bd9e7da7 28
kohacraft 0:d341bd9e7da7 29 int main() {
kohacraft 0:d341bd9e7da7 30
kohacraft 0:d341bd9e7da7 31 ad.autoUpdate = 0; //しない
kohacraft 0:d341bd9e7da7 32 ad.VrefA = 3300; //Vrefの電圧
kohacraft 0:d341bd9e7da7 33 ad.VrefB = 3300; //Vrefの電圧
kohacraft 0:d341bd9e7da7 34 ad.select(0);
kohacraft 0:d341bd9e7da7 35 ad.buffered = 1; //Vrefのアンプ有効化
kohacraft 0:d341bd9e7da7 36 ad.setGain(1); //出力ゲインx1
kohacraft 0:d341bd9e7da7 37 ad.select(1);
kohacraft 0:d341bd9e7da7 38 ad.buffered = 1; //Vrefのアンプ有効化
kohacraft 0:d341bd9e7da7 39 ad.setGain(1); //出力ゲインx1
kohacraft 0:d341bd9e7da7 40
kohacraft 0:d341bd9e7da7 41 float pi = 3.141592653589793238462;
kohacraft 0:d341bd9e7da7 42
kohacraft 0:d341bd9e7da7 43 while(1) {
kohacraft 0:d341bd9e7da7 44
kohacraft 0:d341bd9e7da7 45 for( float y=-1.0 ; y<=1 ; y+=1.0/60 )
kohacraft 0:d341bd9e7da7 46
kohacraft 0:d341bd9e7da7 47 for( float x=-1.0 ; x<=1 ; x+=1.0/60 )
kohacraft 0:d341bd9e7da7 48 {
kohacraft 0:d341bd9e7da7 49
kohacraft 0:d341bd9e7da7 50
kohacraft 0:d341bd9e7da7 51 outAd( x, y );
kohacraft 0:d341bd9e7da7 52 }
kohacraft 0:d341bd9e7da7 53
kohacraft 0:d341bd9e7da7 54 }
kohacraft 0:d341bd9e7da7 55 }