Resolved! I2C does not work with Arduino IDE and STM32L152
Hi,I tried the following program:#include <Wire.h> void setup() { Wire.begin(); //creates a Wire object // set I/O pins to outputs Wire.beginTransmission(0x20); // MCP 23008 Port Expander Wire.write(0x00); //selects the IODIRA register Wire.write(0...