質問編集履歴
1
この2つのコードを使ってLCDの日付けと時刻を表示させたいのです。
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@@ -1,1 +1,153 @@
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LCD（SO1602AWWB-UC-WB-U)」を持っています。これを使ってRTC（DS1307）とシリアル通信でLCDに表示させる方法が分かりません。
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LCD（SO1602AWWB-UC-WB-U)」を持っています。これを使ってRTC（DS1307）とシリアル通信でLCDに表示させる方法が分かりません。
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```#include <Wire.h>
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int DS1307_ADDRESS=0x68;
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int val=0;
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byte command;
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7
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void setTime(){
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byte hour=(Serial.read()<<4);
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hour=hour+(Serial.read()&0x0F);
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byte minute=(Serial.read()<<4);
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minute=minute+(Serial.read()&0x0F);
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byte sec=(Serial.read()<<4);
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sec=sec+(Serial.read()&0x0F);
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Wire.beginTransmission(DS1307_ADDRESS);
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Wire.write(val);
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Wire.write(sec);
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Wire.write(minute);
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Wire.write(hour);
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Wire.endTransmission();
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}
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void setDay(){
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byte year=(Serial.read()<<4);
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year=year+(Serial.read()&0x0F);
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byte month=(Serial.read()<<4);
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month=month+(Serial.read()&0x0F);
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byte day=(Serial.read()<<4);
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day=day+(Serial.read()&0x0F);
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byte day_of_week=(Serial.read()&0x0F);
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Wire.beginTransmission(DS1307_ADDRESS);
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Wire.write(0x03);
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Wire.write(day_of_week);
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Wire.write(day);
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Wire.write(month);
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Wire.write(year);
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Wire.endTransmission();
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}
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void printTime(){
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Wire.beginTransmission(DS1307_ADDRESS);
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Wire.write(val);
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Wire.endTransmission();
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Wire.requestFrom(DS1307_ADDRESS,7);
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byte r_sec=Wire.read();
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byte r_minute=Wire.read();
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byte r_hour=Wire.read();
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byte r_day_of_week=Wire.read();
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byte r_date=Wire.read();
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byte r_month=Wire.read();
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byte r_year=Wire.read();
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Serial.print(r_year,HEX);
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Serial.print("/");
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Serial.print(r_month,HEX);
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Serial.print("/");
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Serial.print(r_date,HEX);
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Serial.print(" ");
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Serial.print(r_hour,HEX);
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Serial.print(":");
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Serial.print( r_minute,HEX);
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Serial.print(":");
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Serial.print( r_sec,HEX);
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Serial.print(" smtwtfs= ");
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Serial.println(r_day_of_week,HEX);
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}
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void setup() {
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Serial.begin(9600);
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Wire.begin();
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Serial.flush();
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}
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void loop() {
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if(Serial.available()){
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command=Serial.read();
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if(command==0x74){
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setTime();
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}
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Serial.println(command);
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if(command==0x64){
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setDay();
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}
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}
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printTime();
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delay(2000);
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}
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```#include <Wire.h>
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#define OLED_ADRS 0x3C //SA0=L(SA0=H の場合は 0x3D)
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int DisplayON = 0x0F,
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ClearDisplay = 0x01,
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ReturnHome = 0x02;
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void setup() {
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Wire.begin(); //Wire ﾗｲﾌﾞﾗﾘを初期化し、I2C ﾏｽﾀとしてﾊﾞｽに接続
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init_oled();
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}
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void loop() {
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char moji[] = "I2C OLED WHITE12345";
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for(int i = 0; i < 20; i++) {
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writeData(moji[i]);
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}
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writeCommand(0x20+0x80); //2 行目の先頭
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for(int i = 0; i < 20; i++) {
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writeData(i+0xB1);
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}
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contrast_max(); //輝度を最大に設定
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while(1){}
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}
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//----main end----
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void writeData(byte t_data)
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{
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Wire.beginTransmission(OLED_ADRS);
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Wire.write(0x40);
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Wire.write(t_data);
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Wire.endTransmission();
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delay(1);
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}
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void writeCommand(byte t_command)
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{
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Wire.beginTransmission(OLED_ADRS);
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Wire.write(0x00);
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Wire.write(t_command);
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Wire.endTransmission();
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delay(10);
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}
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void contrast_max(){
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writeCommand(0x2a);//RE=1
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writeCommand(0x79);//SD=1
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writeCommand(0x81);//コントラストセット
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writeCommand(0xFF);//輝度ＭＡＸ
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writeCommand(0x78);//SD を０にもどす
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writeCommand(0x28); //2C=高文字 28=ノーマル
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delay(100);
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}
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void init_oled()
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{
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delay(100);
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writeCommand(ClearDisplay); // Clear Display
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delay(20);
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writeCommand(ReturnHome); // ReturnHome
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delay(2);
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writeCommand(DisplayON); // Send Display on command
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delay(2);
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writeCommand(ClearDisplay); // Clear Display
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delay(20);
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}
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152
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コード
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153
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```
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