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Abidi
Joined: 12 May 2014
Posts: 6
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| keypad |
 Posted: Thu May 22, 2014 9:27 am |
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Hi, I'm working in a project in which i used a keypad to enter value.
After entering this value, i want to return to execute the rest of my program, but the problem is that the execution still blocked on the function of keypad :(
I will appreciate your help.
| Code: |
#include <main.h>
#define LCD_ENABLE_PIN PIN_D0
#define LCD_RS_PIN PIN_D2
#define LCD_RW_PIN PIN_D1
#define LCD_DATA4 PIN_D6
#define LCD_DATA5 PIN_D5
#define LCD_DATA6 PIN_D4
#define LCD_DATA7 PIN_D3
#define buzzer PIN_D7
#use fast_io(a)
#include <lcd.c>
#include <flex_kbd.c>
char k;
unsigned long int lecture;
float v, Ifuite,Imax;
int j=60;
void keypad()
{
lcd_init();
kbd_init();
lcd_gotoxy(1,1);
printf(lcd_putc,"Entrer les");
lcd_gotoxy(1,2);
printf(lcd_putc,"parametres");
delay_ms (1500) ;
lcd_init();
printf(lcd_putc,"Imax=%c",k);
while (TRUE)
{
k=kbd_getc();
if(k!=0)
lcd_putc(k);
if(k=='#')
lcd_putc("\fTension\n");
if (k=='*')
lcd_putc("\fTemps\n");
}
}
void test()
{
if ( Ifuite < Imax)
{
output_low(pin_c0);
lcd_init();
printf(lcd_putc,"test OK \r");
output_high(pin_c1);
delay_ms(1500);
output_low(pin_c1);
}
else if ( Ifuite >= Imax)
{
output_low(pin_c0);
lcd_init();
printf(lcd_putc,"test NOT OK \r");
//output_high(pin_d7);
output_high(pin_c2);
delay_ms(1500);
output_low(pin_c2);
}
void main()
{
lcd_init();
printf(lcd_putc,"Bienvenue \r");
delay_ms (1500) ;
lcd_init();
printf(lcd_putc,"sagemcom \r");
delay_ms (1500) ;
keypad();
lcd_init();
printf(lcd_putc,"start test \n");
delay_ms (1500);
printf(lcd_putc,"test en cours \r");
output_high(pin_C0);
delay_ms (1500);
setup_adc_ports(AN0);
setup_adc(ADC_CLOCK_INTERNAL);
lcd_init();
set_adc_channel(0);
delay_us(20);
while(true)
{
lecture=read_adc();
delay_us(20);
v=lecture*0.0048828125;
delay_us(10);
ifuite=v/1.5;
delay_us(10);
lcd_init();
lcd_gotoxy(1,1);
printf(lcd_putc,"I=%fmA",Ifuite);
lcd_gotoxy(1,2);
printf(lcd_putc,"Ttest=%d",j);
j=j-1;
if(j==0)
{
lcd_init();
test();
}
}
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu May 22, 2014 9:48 am |
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This sample code shows how to poll the keypad every 10 ms in an
interrupt routine. If a key is pressed, it's put into a circular buffer.
Your main code can check 'bkbhit' to see if a character is available
in the keypad buffer. If so, you can get the character with bgetc().
http://www.ccsinfo.com/forum/viewtopic.php?t=42707&start=4
Because this keypad loop doesn't block (it's run by interrupts), you
can do other activities in your main loop. |
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Abidi
Joined: 12 May 2014
Posts: 6
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| keypad |
| Posted: Sun May 25, 2014 5:10 am |
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ok thanks  and how can i store a value of current entered by keypad, displayed on lcd, because in test i need this value to do the comparison. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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