Diff: main.cpp

Revision:

0:452bfcde2612

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Apr 27 11:13:23 2021 +0000
@@ -0,0 +1,94 @@
+#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 DVI10(n) ((n*205)>>11)
+
+AnalogIn adc_vbat(A3); //PA_4
+
+#define ADDR        (0xD0)   //  address
+#define ADDR_LCD    (0x7C)   //  address
+
+//I2C i2c(I2C_SDA, I2C_SCL); //767
+//I2C i2c(dp5, dp27); //1114
+I2C i2c(PA_10, PA_9); //010
+
+char    data_read[8];   //i2cバッファー
+
+char INIT_com[]={0x0,0x38,
+0x0,0x39,
+0x0,0x4,
+0x0,0x14,
+0x0,0x70,
+0x0,0x56,
+0x0,0x6C,
+0x0,0x38,
+0x0,0xC,
+0x0,0x1,
+0x40,0x41};
+
+char INIT_cls[]={0x0,0x1};
+
+char ch_hex_a_b[5];
+char *ch_hex_a(int l_num)
+{
+    int a,b,c;
+
+    b=DVI10(l_num);
+    c=l_num-(b*10);
+    l_num=b;
+    a=DVI10(l_num);
+    b=l_num-(a*10);
+
+    ch_hex_a_b[0] = '@';
+    ch_hex_a_b[1] = '0' + a;
+    ch_hex_a_b[2] = '0' + b;
+    ch_hex_a_b[3] = '0' + c;
+    ch_hex_a_b[4] = 0;
+
+    return(ch_hex_a_b);
+}
+
+int ii;     //ループカウンタ
+
+int main()
+{
+    //液晶の初期化
+    for(ii=0;ii<11;ii++){
+        i2c.write(ADDR_LCD, &INIT_com[ii*2], 2);wait_ms(2);
+    } //for
+
+//    i2c.write(ADDR, "\230", 1); //16bit 15sps PGA x1
+
+    int p,s;
+    while (1) {
+        //液晶のクリア
+        i2c.write(ADDR_LCD,INIT_cls,2);wait_ms(2);
+
+    //adcの読み込み
+        s = (adc_vbat.read_u16()>>4);
+
+    //  (4096*165)/2048=330 電圧の100倍に変換
+    //s = 13;
+    p = (s*165) >> 11; 
+
+//        //データの読み込み
+//        i2c.read(ADDR | 1, data_read, 2);
+//        
+//        s = (data_read[0] * 256 ) + data_read[1];
+//        //s = 32767;
+//        //printf("-s=%d\r\n",s); //767
+//        //printf(" h=%d\r\n",data_read[0] * 256 );
+//        //printf(" l=%d\r\n",data_read[1]);
+//
+//        // 32768/(163.84/2)=400 luxに変換
+//        p=( ((s>>5)*6)  + (s>>7)  ) >> 4;
+//        //printf(" p=%d\r\n",p); //767
+        
+        i2c.write(ADDR_LCD, ch_hex_a( p ) ,4);
+
+        wait_ms(1000);
+    }//while
+
+}//main
+
+void error(const char* format, ...){}