x MCP9701-E/TO 販売コード 103199
STM8で温度計を作る(MCP9701)(7セグ)
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目的
SPIのテスト



//SPI_7SEG_9701_STM8_1

//*******   ******   *****  *****
//     *         *   *      *
//    *         *    *****  *  ***
//  *       ****     *      *    *
//  *       *        *      *    *
//  *        *****   *****  *****


//インクルド
#include <SPI.h>


//定義
#define DW    digitalWrite
char ss[] =  {
  "#9#9#9#8#7#7#6#5#5#4#3#3"
  "#2#1#1#0-9-9-8-7-7-6-5-5"
  "-4-3-3-2-2-1-1 0 1 1 2 2"
  " 3 4 4 5 6 6 7 8 8 91010"
  "111212131414151616171818"
  "192020212222232424252626"
  "272828293030313232333434"
  "353636373838394040414242"
  "434444454546474748494950"
  "50#0#0#0#0#0#0#0#0#0#0#0"
  "#0#0#0#0#0#0#0#0"
};
char seg[32] = {
  0x00 , //0 @ -> ' '
  0x77 , //1 A  o
  0x7c , //2 B     　combined use "6"
  0x39 , //3 C
  0x5e , //4 D
  0x79 , //5 E  o
  0x71 , //6 F
  0x3d , //7 G

  0x76 , //8 H  o
  0x06 , //9 I    　combined use "1"
  0x1e , //10 J
  0x75 , //11 K
  0x38 , //12 L  o
  0x15 , //13 M
  0x37 , //14 N  o
  0x3f , //15 O  o　combined use "0"

  0x73  , //16 P
  0x67  , //17 Q　combined use "9"
  0x50  , //18 R
  0x6d  , //19 S　combined use "5"
  0x78  , //20 T
  0x3e  , //21 U
  0x1c  , //22 V
  0x2a  , //23 W  o
  0x64  , //24 X

  0x6e  , //25 Y
  0x5b  , //26 Z　combined use "2"
  0x4f  , //27 [  --> "3"
  0x66  , //28 \  --> "4"
  0x27  , //29 ]  --> "7"
  0x7f  , //30 ^  --> "8"
  0x40    //31 _  --> "-"
};
char nn[] = {'O', 'I', 'Z', '[', '\\', 'S', 'B', ']', '^', 'Q'};
int comma1 = 0; // コンマ(小数点)の有効フラグ　1で有効　0無効


//7segの一文字出力 nana_seg
int ns_putc(char ch) {

  if (ch == ' ') {
    ch = '@';
  } else if (ch == '.') {
    return (0);
  } else if (ch >= '0' && ch <= '9' ) {
    ch = nn[ch - '0'];
  }

  if ( comma1 != 0 ) {
    comma1 = (0x80);
  }


  //7SEGに一文字送る
  SPI_transfer(seg[ch - 64] | comma1);
  DW(PE5, 1); DW(PE5, 0); //ラッチの操作

  delay(200);//debug

  comma1 = 0;

  //戻り値
  return (0);

}//ns_putc


//文字列の表示 nana_seg
int ns_printf(char *str1) {

  //文字の中身がゼロか
  while (*str1) {

    //コンマの処理
    comma1 = 0;
    if ( (*(str1 + 1) ) == '.' ) {
      comma1 = 1;
    }

    //一文字出力
    ns_putc(*str1 ++);

  } //while

  //戻り値
  return (0);

}//ns_printf


//初期化
void setup() {

  //SSポートの初期化
  pinMode(PE5, OUTPUT); DW(PE5, 0);

  //SPIの開始
  SPI_begin();

  // SPIの初期化
  SPI_beginTransaction( SPISettings( 8000000, MSBFIRST, SPI_MODE0) );

} //setup


//メインループ
void loop() {

  uint16_t s;//センサーの値
  char str1[16]; //温度の文字列

  //ADCの読み込み
  s = analogRead(PB0);

  //s = 250; //" 20C" debug
  //s = 0;   //"-19C" debug

  //温度の変換 テーブルから読み出す
  str1[3] = ss[((s >> 1) & (0x7f << 1))]; //'#'か

  str1[0] = (str1[3] == '#') ? '_' : ' ';
  str1[1] = (str1[3] == '#') ? '1' :
            ss[((s >> 1) & (0x7f << 1))]   ; //10の桁
  str1[2] = ss[((s >> 1) & (0x7f << 1)) + 1] ; // 1の桁
  str1[3] = '.';
  str1[4] = 'C';
  str1[5] = 0;

  //温度の表示
  ns_printf(str1);

  delay(2500);//1秒待つ

} //loop