16x2 LCD display code for Nordic Nrf51822

[SamV]

I did proper connection of lcd to nordic board. and did proper contrast setting.

But not able to display anything on lcd.

i am using JHD162A 16x2 lcd.

www.brodie-tyrrell.org/.../JHD162A.pdf

Could any one check the datasheet and tell me, is nordic able to drive this display because nordic vcc is only 3.5 V.

and also here my code, kindly tell me what may the problem. main.c

[MartinBL]

According to the electrical specifications in the datasheet in your link the operating voltage is between -0.3V to +7.0V. The testing of the display's electrical characteristic is apparently done with VDD in the range between 2.7V to 4.5V. The datasheet also says that minimum Input High Voltage is 0.7*VDD. If you run your nRF51 at 3.5V the maximum supply voltage for the display is

3.5V/0.7 = 5V

However, I also found this datasheet with completely different values and I don't know what sheet to trust.