ABL electronic PIC Microcontrollers PIC16 - Manual (Page 203)

MikroElektronika: Development tools - Books - Compilers
195
page
mikroC - C Compiler for Microchip PIC microcontrollers
mikroC
making it simple...
The following code can be used for testing the keypad. It supports keypads with 1 to 4 rows and 1
to 4 columns. The code returned by the keypad functions (1..16) is transformed into ASCII codes
[0..9,A..F]. In addition, a small single-byte counter displays the total number of keys pressed in
the second LCD row.
unsigned short kp, cnt;
char txt[5];
void main() {
cnt = 0;
Keypad_Init(&PORTC);
Lcd_Init(&PORTB); // Initialize LCD on PORTC
Lcd_Cmd(LCD_CLEAR); // Clear display
Lcd_Cmd(LCD_CURSOR_OFF); // Cursor off
Lcd_Out(1, 1, "Key :");
Lcd_Out(2, 1, "Times:");
do {
kp = 0;
//--- Wait for key to be pressed
do
//--- un-comment one of the keypad reading functions
kp = Keypad_Released();
//kp = Keypad_Read();
while (!kp);
cnt++;
//--- prepare value for output
if (kp > 10)
kp += 54;
else
kp += 47;
//--- print it on LCD
Lcd_Chr(1, 10, kp);
WordToStr(cnt, txt);
Lcd_Out(2, 10, txt);
} while (1);
} //~!
Library Example