Revision 0:e166d7acab38, committed 2022-05-06

Comitter:

caa45040

Date:

Fri May 06 14:06:50 2022 +0000

Commit message:

i2c_slave_HC_SR04_010_BIN

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri May 06 14:06:50 2022 +0000
@@ -0,0 +1,187 @@
+//i2c_slave_ir_length_010_1
+
+
+#include "mbed.h"
+
+
+//10の割り算 0から1028までは、正しい。主に0から999
+#define DIV10(n) ((n*205)>>11)
+
+
+#define HIGH 1
+DigitalOut TRIG(PA_6);
+DigitalIn  ECHO(PA_5);
+
+
+//タイマーの設定
+Timer t;
+
+unsigned long times; //測定時間
+int distance;        //長さ
+
+
+//PA_5のオン時間をusで測る　今のところ引数は、無効
+int pulseIn(int pin1,int pu1,int timeout1)
+{
+
+    t.reset();//タイマーの開始
+
+    //timeout1 = 32000000;
+    timeout1 = 100000;    //28ms
+    //timeout1 = 1000;   //degbu
+
+    //while(PA_5 == 0) {}
+
+loop_s1:
+    timeout1--;
+    //                            5432109876543210
+    if (     (~(GPIOA->IDR))  & 0b0000000000100000     ) {
+        if ( timeout1 ) {
+            goto loop_s1;
+        }
+    }
+
+
+    int sd = t.read_us();//測定開始
+
+    //timeout1 = 32000000;
+    timeout1 = 100000;     //28ms
+    //timeout1 = 1000;   //degbu
+
+    //while(PA_5 != 0) {}
+
+loop_in1:
+    timeout1--;
+    //                      5432109876543210
+    if (   (GPIOA->IDR) & 0b0000000000100000   ) {
+        if( timeout1 ) {
+            goto loop_in1;
+        }
+    }
+
+ 
+    return(t.read_us()-sd);//測定終了
+
+}//pulseIn
+
+
+
+/*
+DigitalOut TX(PB_1);
+
+//仮想シリアルへの一文字出力 1200bps
+int pc_putc(char ch)
+{
+    TX=1;
+    TX=0;//Start
+    wait_us(832);
+
+    for(int ii=0; ii<8; ii++) { //Data x 8
+        TX=(ch>>ii)&1;
+        wait_us(832);
+    }; //for
+
+    TX=1;//Stop
+    wait_us(832);
+
+    return(0);
+} //pc_putc
+*/
+
+
+unsigned char b=200; //マスターに返す値
+
+//I2Cの初期化
+I2CSlave slave(PA_10, PA_9); //010
+
+//メインルーチン
+int main()
+{
+
+    //タイマーの開始
+    t.start();
+
+    //GPIOの初期化
+    TRIG = 0;
+
+    //TX=1; //ポートの初期化
+
+    char buf[10];//I2Cバッファー
+
+    //I2Cスレーブのアドレスの設定
+    slave.address(0x10);
+
+    //無限ループ
+    while(1) {
+
+        //I2Cの状態の読み出し(ポーリング)
+        while(  slave.receive()  == I2CSlave::ReadAddressed   ) {};
+
+        //b = 40; //debug
+        buf[0] = b;
+
+        //I2Cマスターに送信する
+        slave.write(buf,1);
+
+        /*
+
+                //I2Cスレーブの送信データの表示 num debug
+                int d = b; //buf[0];
+                char data_read[3]; //バッファーの定義
+                data_read[3] = 0;
+                data_read[2] = '0' + (  d - (DIV10(d) * 10)  );  // '0'+(d%10)
+                d = DIV10(d);
+                data_read[1] = '0' + (  d - (DIV10(d) * 10)  );  // '0'+(d%10)
+                data_read[0] = '0' +  DIV10(d);                  // '0'+(d/10)
+                pc_putc(data_read[0]);
+                pc_putc(data_read[1]);
+                pc_putc(data_read[2]);
+                pc_putc('\r');
+                pc_putc('\n');
+        */
+
+        // 超音波を発生させる
+        TRIG=1;
+        wait_us(10);
+        TRIG=0;
+
+        // 超音波を受け取る
+        times = pulseIn( 5, HIGH,2000000);
+
+        //times = (unsigned long)7700/2; //debug
+
+        //distance = (int)(times * 0.017);
+        distance = (int)((times * ((unsigned long)(17))) / 100);
+
+
+        if(distance <= 60   ) {
+            distance = 60;
+        }
+        if(distance >= 800 ) {
+            distance = 800;
+        }
+
+        if ( distance <= 199 ) {
+
+            b = distance - 60;
+
+        } else {
+
+            b = (unsigned char)(   DIV10(distance)-20+140 );
+
+        }
+
+
+        //0.5秒の待ち
+        //wait_ms(500);
+
+    }//while
+
+}//main
+
+
+//容量削減
+void error(const char* format, ...) {}
+
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri May 06 14:06:50 2022 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/d75b3fe1f5cb
\ No newline at end of file