EVM5509 Keypad Module

This module allows you to read the value of the switches and potentiometers on the EVM5509A’s keypad/display module. The keypad/display module must be connected to the EVM5509A when the board is powered up.

Description
Initialize keypad/display

Required Headers
evm5509.h
evm5509_keypad.h

Required Libraries
evm5509bsl.lib

Function Prototype
void EVM5509_KEYPAD_init()

Parameters
None

Return Value
None

Example

    /* Initialize keypad/display module */
    EVM5509_KEYPAD_init();

Description
Reads the value of the switches on the keypad/display module.

Required Headers
evm5509.h
evm5509_keypad.h

Required Libraries
evm5509bsl.lib

Function Prototype
Uint16 EVM5509_KEYPAD_readKey()

Parameters
None

Return Value
1-9 - if a switch is pressed, 0 if no keys are pressed

Example

    /* Read current key value */
    keyval = EVM5509_KEYPAD_readKey();

Description
Reads the value of the potentiometers on the keypad/display module

Required Headers
evm5509.h
evm5509_keypad.h

Required Libraries
evm5509bsl.lib

Function Prototype
Uint16 EVM5509_KEYPAD_readPot(Int16 potnum)

Parameters
potnum – 1 for potentiometer #1, 2 for potentiometer #2

Return Value
12-bit value read from analog/digital converter connected to potentiometer.

Example

    /* Read value of potentiometer #1 */
    potval = EVM5509_KEYPAD_readPot(1);