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ESP-WROOM-02 を用いたコントローラー(親機側)
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/////////////////////////////////////////////////////////////////////// | |
// ESP-WROOM-02 のチップIDを用いて SSID を生成する | |
void getSSID( | |
char *buff ) // | |
{ | |
sprintf( buff, "ESP_%6X", ESP.getChipId( ) ); | |
} |
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#include <ESP8266WiFi.h> | |
#include <WiFiClient.h> | |
#include <WiFiUDP.h> | |
#include <ST7032.h> | |
ST7032 lcd; | |
#define BUFF_SIZE 16 | |
char lineBuff[ BUFF_SIZE ]; // LCDの1行分バッファ | |
// UDP setting | |
WiFiUDP UDP; | |
// WiFi setting | |
IPAddress myIP(192, 168, 4, 1); | |
void setup( ) | |
{ | |
Serial.begin( 115200 ); | |
Serial.println( "" ); | |
lcd.begin( 8, 2 ); | |
lcd.setContrast( 30 ); // コントラスト設定 | |
lcd.setCursor( 0, 0 ); | |
lcd.printf( "Wait " ); | |
lcd.setCursor( 0, 1 ); | |
lcd.printf( "Connect." ); | |
WiFi.mode( WIFI_AP ); // Wi-Fi のアクセスポイントとして動作 | |
getSSID( lineBuff ); | |
WiFi.softAP( lineBuff ); | |
WiFi.config( myIP, WiFi.gatewayIP( ), WiFi.subnetMask( ) ); | |
UDP.begin( 893 ); // | |
WiFi.printDiag( Serial ); | |
Serial.println( "UDP.begin!" ); | |
} | |
void rcvWiFi( char *cBuff, int iSize ) | |
{ | |
static unsigned char cCount = 0; | |
cCount++; | |
lcd.clear( ); | |
sprintf( cBuff, "L:%3d(%02X", iSize, cCount ); | |
lcd.print( cBuff ); | |
if ( iSize > 8 ) { | |
iSize = 8; | |
} | |
UDP.read( cBuff, iSize ); | |
cBuff[ iSize ] = '\0'; // 表示用に '\0' を付加 | |
Serial.println( cBuff ); | |
UDP.flush( ); | |
lcd.setCursor( 0, 1 ); | |
lcd.printf( cBuff ); | |
} | |
void loop( ) | |
{ | |
int iSize; | |
if ( ( iSize = UDP.parsePacket( ) ) > 0 ) { | |
Serial.printf( "Receive : %d ", iSize ); | |
rcvWiFi( lineBuff, iSize ); | |
} | |
delay( 10 ); | |
} |
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