Arduino for STM32

void ConfigRegister (uint8_t Addrs,uint8_t Register,uint8_t Config)

{
Wire.beginTransmission(Addrs); // Choose Addrs of mcp 23018
Wire.write(Register); // choose Register ex : iocon
Wire.write(Config); // Choose Configu Register ex : 0x00 for incative
Wire.endTransmission();

}

void ...

// I put my code in the setup to avoid the while in the loop to understand my problem
// I am attaching my void() registers configuration in another message




#include <Wire.h>



#define I2C_ADDR1 0x20 // ADDRS MCP 23018 1
#define I2C_ADDR2 0x21 // ADDRS MCP 23018 2


// --- SETTING ...

hello everybody :)

I am new user, i hope i am in the good section !

1st - sorry im french so i use google translate to try to explain my problem .. :)

2nd - ENVIRONMENT

/nucleo 32-l432kc
/IDE ARDUINO
/Wire.h
/all Register 0x00
/ADDRS : mcp1 0x20
/ADDRS : mcp2 0x21
/ADDRS : GPOIA 0X12
/ADDRS ...