Blinky.c :
	Added support OPAMP1, ADC1, DMA1
	PA1 & PA2 worked as input pins to OPAMP1; OPAMP1 output pin
	connect to PA3(ADC1)

	Verified AD5934 via I2C   -- Passed
	Verified OPAMP1,ADC1,DMA1 -- Passed
Merge branch 'stm-i2c'