The 2 User Buttons on the Hercules LaunchPad Type II

This post describes how to use the two pushbuttons on the new Hercules LaunchPad type II.

Button A

Button A connects to pin 55, and is multiplexed as:

• MIBSPI3NCS_0

• AD2EVT

• GIOB_2

• EQEP1I

In the HALCoGen PINMUX tab, we set the pin 55 to GIO

The pin 55 is a special case. It also requires that you make the following Special Pin Muxing setting:

That's all that's needed in HALCoGen.

In Code Composer Studio, add this call to sys_main.c to initialize the gio driver.

gioInit(); // user button A is on the GIOB port, 2

You can check the state of the button in your code by executing:

gioGetBit(gioPORTB, 2);

Button B

Button B connects to pin 41, and multiplexes as

• N2HET1_15

• MIBSPI1NCS_4

• ECAP1

We MUX Button B as NHET (NHET1 pin 15). This port/pin combination can be used in the GIO API as a generic GIO pin.

You need to enable the NHET driver in HALCoGen so that the header files with the HET registers are created. I also call the init of the HET driver.

gioInit(); 
hetInit(); // user button B is on the HET1 port, 15

You can check the state of the button in your code by executing:

gioGetBit(hetPORT1, 15);