eeprom

#include <Wire.h>

#define GOT_HERE()  do {Serial.print('['); Serial.print(__LINE__); Serial.println(']'); Serial.flush();} while(0)
#define MAX_BUFFER_ADDR_PK 102
#define SDA_PIN 4
#define SCL_PIN 5

const int I2C_SLAVE_ADDR0 = 0x50;
const int I2C_SLAVE_ADDR1 = 0x51;
const int I2C_SLAVE_ADDR2 = 0x52;
const int I2C_SLAVE_ADDR3 = 0x53;
const int I2C_SLAVE_ADDR4 = 0x54;
const int I2C_SLAVE_ADDR5 = 0x55;
const int I2C_SLAVE_ADDR6 = 0x56;
const int I2C_SLAVE_ADDR7 = 0x57;

char addrpk[MAX_BUFFER_ADDR_PK] = {};
bool ok = true;

void setup(){
    Serial.begin(115200);
    Wire.begin(SDA_PIN, SCL_PIN);
    Wire.setClock(100);
}

void loop() {
    strcpy(addrpk, "{\"bc1qjaz2248t09y98vaqguq2560t7kclhesapce5sf\":\"KxdK7M6b148NsEyH6EvR91xSWN27uzCxYfhgdRznZEZfX7Kkr9Rh\"}");
    using periodic = esp8266::polledTimeout::periodicMs;
    static periodic nextPing(1000);
    if(nextPing && ok){
        GOT_HERE();
        Wire.beginTransmission(I2C_SLAVE_ADDR7);
        GOT_HERE();
        Wire.write(addrpk);
        GOT_HERE();
        Wire.endTransmission();
        GOT_HERE();
        Wire.requestFrom(I2C_SLAVE_ADDR7, strlen(addrpk));
        GOT_HERE();
        while( Wire.available() ){
            char c = Wire.read();
            Serial.print(c);
            GOT_HERE();
        }
        ok = false;
    }
}