STM32L15x :
	Blinky project init commit
Blink.c
	Added support I2C1 read write slave deivce.
	Removed led blink

	TODO : All I2C functions must move to one C file.
	       led blink can be used as debug led.
Ad5934.c :
	Added support AD5934 via I2C1
Blinky.c :
	Added ad5934 sub functions in main loop
Merge branch 'stm-i2c'