Arduino UNO R4 WiFiを使って、ネットから日時取得 のプログラム
前回の記事でArduino UNO R4 WiFiボードで日時を取得して表示することを書いたのだが、肝心のプログラムがブログの文字制限で入りきらなかったので、改めてここに書こうと思う。
↓前回記事はここから
https://ameblo.jp/ogura-castle/entry-12821756104.html
改めて見ても、なんか無駄が多そう。 たぶんもうちょっとスリム化できるんじゃないかな。
実際に実装する時は、プログラム内のWi-Fi環境に関する記述を書く必要がある。
具体的には、5・6行目の、ssidとpasswordの変数に代入すればよい。
#include <WiFiS3.h>
#include "Arduino_LED_Matrix.h"
#include "RTC.h"
const char ssid[] = "**********";
const char password[] = "**********";
WiFiUDP Udp;
#define timeZoneOffsetHours 7 //タイ国なので+7時間
RTCTime currentTime;
//スクロール時間
#define SCROLL_TIME 100 //ミリ秒
unsigned long tm = 0;
//LED Matrix用領域
byte matrix[200]; //文字列をドットに変換用
char DateTime[100]; //日時を文字列に変換用
int max_idx; //matrix配列の最終カラム
int secIdx; //matrix配列でどこから秒数表示か格納
int idx;
int secBack, minBack;
//LED matrix用のフォントを独自に作成
byte cfa[][6] PROGMEM = {
{'A', 0x7f, 0x88, 0x88, 0x7f}, //A
{'D', 0xff, 0x81, 0x81, 0x7e}, //D
{'E', 0xff, 0x91, 0x91, 0x91}, //E
{'F', 0xff, 0x90, 0x90, 0x90}, //F
{'H', 0xff, 0x10, 0x10, 0xff}, //H
{'I', 0x81, 0xff, 0x81}, //I
{'M', 0xff, 0x40, 0x30, 0x40, 0xff}, //M
{'N', 0xff, 0x60, 0x18, 0x06, 0xff}, //N
{'O', 0x7e, 0x18, 0x18, 0x7e}, //O
{'P', 0xff, 0x90, 0x90, 0x60}, //P
{'R', 0xff, 0x98, 0x94, 0x63}, //R
{'S', 0x62, 0x91, 0x91, 0x4e}, //S
{'T', 0x80, 0x80, 0xff, 0x80, 0x80}, //T
{'U', 0xfe, 0x01, 0x01, 0xfe}, //U
{'W', 0xf8, 0x07, 0x38, 0x07, 0xf8}, //W
{'0', 0x7e, 0x8d, 0xb1, 0x7e}, //0
{'1', 0x41, 0xff, 0x01}, //1
{'2', 0x67, 0x89, 0x91, 0x61}, //2
{'3', 0x46, 0x91, 0x91, 0x6e}, //3
{'4', 0x38, 0x48, 0xff, 0x08}, //4
{'5', 0xf2, 0x91, 0x91, 0x8e}, //5
{'6', 0x7e, 0x91, 0x91, 0x4e}, //6
{'7', 0xc0, 0x87, 0x98, 0xe0}, //7
{'8', 0x6e, 0x91, 0x91, 0x6e}, //8
{'9', 0x72, 0x89, 0x89, 0x7e}, //9
{'.', 0x03, 0x03}, // .
{'/', 0x03, 0x0c, 0x30, 0xc0}, // /
{':', 0x36, 0x36}, // :
{'-', 0x08, 0x08, 0x08, 0x08} }; // -
//曜日を数字から文字列に変換するテーブル
char dow[7][4] PROGMEM = {
{ "SUN" },
{ "MON" },
{ "TUE" },
{ "WED" },
{ "THU" },
{ "FRI" },
{ "SAT" }
};
void setup() {
byte packetBuffer[48];
int sts, i1;
turnLed(0, true);
RTC.begin();
turnLed(1, true);
WiFi.begin(ssid, password);
turnLed(2, true);
delay(3000);
while (WiFi.status() != WL_CONNECTED)
delay(500);
turnLed(3, true);
Udp.begin(2390);
turnLed(4, true);
memset(packetBuffer, 0, 48);
packetBuffer[0] = 0xE3; // LI, Version, Mode
packetBuffer[1] = 0; // Stratum, or type of clock
packetBuffer[2] = 6; // Polling Interval
packetBuffer[3] = 0xEC; // Peer Clock Precision
packetBuffer[12] = 49;
packetBuffer[13] = 0x4E;
packetBuffer[14] = 49;
packetBuffer[15] = 52;
turnLed(5, true);
delay(3000);
do{
sts = Udp.beginPacket("pool.ntp.org", 123); //NTP requests are to port 123
}while(!sts);
turnLed(6, true);
sts = Udp.write(packetBuffer, 48);
do{
sts = Udp.endPacket();
}while(!sts);
turnLed(7, true);
while(!Udp.parsePacket())
delay(500);
turnLed(8, true);
Udp.read(packetBuffer, 48); // read the packet into the buffer
unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
unsigned long secsSince1900 = highWord << 16 | lowWord;
unsigned long seventyYears = 2208988800UL;
unsigned long secondsSince1970 = secsSince1900 - seventyYears + (timeZoneOffsetHours * 3600);
turnLed(9, true);
RTCTime timeToSet = RTCTime(secondsSince1970);
RTC.setTime(timeToSet);
turnLed(10, true);
//disconnect WiFi as it's no longer needed
WiFi.disconnect();
turnLed(11, true);
RTC.getTime(currentTime);
turnLed(12, true);
for(i1 = 0; i1 < 11; i1++) //最初の11マスは空白
matrix[i1] = 0;
sprintf(DateTime, "%04d/%02d/%02d %s %02d:%02d:@%02d",
currentTime.getYear(),
Month2int(currentTime.getMonth()),
currentTime.getDayOfMonth(),
dow[(int)currentTime.getDayOfWeek()],
currentTime.getHour(),
currentTime.getMinutes(),
currentTime.getSeconds());
turnLed(13, true);
max_idx = setMatrixText(DateTime, 11);
turnLed(14, true);
secBack = currentTime.getSeconds();
minBack = currentTime.getMinutes();
idx = 0;
}
void loop() {
int ic1, ic2;
RTC.getTime(currentTime);
if(secBack != currentTime.getSeconds()){
char secStr[3];
sprintf(secStr, "%02d", currentTime.getSeconds());
setMatrixText(secStr, secIdx);
secBack = currentTime.getSeconds();
}
if(minBack != currentTime.getMinutes()){
sprintf(DateTime, "%04d/%02d/%02d %s %02d:%02d:@%02d",
currentTime.getYear(),
Month2int(currentTime.getMonth()),
currentTime.getDayOfMonth(),
dow[(int)currentTime.getDayOfWeek()],
currentTime.getHour(),
currentTime.getMinutes(),
currentTime.getSeconds());
max_idx = setMatrixText(DateTime, 11);
minBack = currentTime.getMinutes();
}
if(tm + SCROLL_TIME <= millis()) {
//格納場所をスライド、末端に到達したら始めに戻る
if (idx < max_idx)
idx++;
else{
idx = 0;
}
//経過時間を再計測
tm = millis();
}
//8x12LED View
for(ic1 = 0; ic1 < 8; ic1++){
for(ic2 = 0; ic2 < 12; ic2++){
turnLed(ic1 * 12 + ic2 , matrix[idx + ic2] >> (7 - ic1) & 0x01);
delayMicroseconds(20);
}
}
}
unsigned int setMatrixText(char* setStr, int setStart)
{
unsigned int srcf; //, setIdx;
int idx2, idx3 = 0;
while(setStr[idx3] != '\0'){
if(setStr[idx3] != ' ' && setStr[idx3] != '@')
for(srcf = 0; srcf < 29; srcf++)
if(setStr[idx3] == cfa[srcf][0])
break;
if(srcf >= 29) break;
switch(setStr[idx3]){ //文字をmtrixに変換
case '@': //秒の場所を取得
secIdx = setStart;
break;
case ' ':
for(idx2 = 0; idx2 < 3; idx2++){
matrix[setStart] = 0;
setStart++;
}
break;
case '.':
case ':':
for(idx2 = 0; idx2 < 2; idx2++){
matrix[setStart] = cfa[srcf][idx2 + 1];
setStart++;
}
break;
case 'I':
case '1':
for(idx2 = 0; idx2 < 3; idx2++){
matrix[setStart] = cfa[srcf][idx2 + 1];
setStart++;
}
break;
case 'M':
case 'N':
case 'T':
case 'W':
for(idx2 = 0; idx2 < 5; idx2++){
matrix[setStart] = cfa[srcf][idx2 + 1];
setStart++;
}
break;
default:
for(idx2 = 0; idx2 < 4; idx2++){
matrix[setStart] = cfa[srcf][idx2 + 1];
setStart++;
}
}
matrix[setStart] = 0;
setStart++;
idx3++;
}
for(idx2 = 0; idx2 < 11; idx2++)
matrix[setStart] = 0; //最後に余白を入れる
return setStart;
}