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art
Joined: 21 May 2015
Posts: 181
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| Convert 74165 decimal result to Binary |
 Posted: Mon Dec 12, 2016 7:19 pm |
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Hi,
I've build a program to get result from 8 input push button using 74165 shift register.
The program works well. However the result is in decimal (0~127, -1 ~ -128).
I would like to get the result in binary number such as 11111111 instead of (-128).
Hope someone can help me to solve this problem
| Code: |
#include <18F4550.h>
#fuses HSPLL,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL5,CPUDIV1,VREGEN
#use delay(clock=48000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
#include <string.h>
#include <input.c>
#include <stdio.h>
#include <stdlib.h>
#include <usb_cdc.h>
#include <74165.c>
void main()
{
char c;
int8 data ;
unsigned char d;
unsigned char key;
usb_init_cs();
while (TRUE)
{
usb_task();
if (usb_cdc_kbhit())
{
c=usb_cdc_getc();
if (c=='\n') {putc('\r'); putc('\n');}
if (c=='\r') {putc('\r'); putc('\n');}
while(true)
{
d = usb_cdc_getc();
if(d=='U') // push W
{
while (key!=32) // push SPACE BAR to stop
{
if(usb_cdc_kbhit())
{key=usb_cdc_getc();}
read_expanded_inputs(&data);
delay_ms(500);
printf(usb_cdc_putc,"\r%d ", data);
} key=0;
}
}
}
}
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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art
Joined: 21 May 2015
Posts: 181
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| Posted: Mon Dec 12, 2016 9:27 pm |
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Hi PCM,
Thanks for the idea.
I've change my code and it works as I plan
| Code: |
#include <18F4550.h>
#DEVICE ADC=10
#fuses HSPLL,NOWDT,PROTECT,NOLVP,NODEBUG,USBDIV,PLL5,CPUDIV1,VREGEN
#use delay(clock=48000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
#include <string.h>
#include <input.c>
#include <stdio.h>
#include <stdlib.h>
#include <usb_cdc.h>
#include <74165.c>
void main()
{
char c;
int8 data ;
unsigned char d;
unsigned char key;
usb_init_cs();
while (TRUE)
{
usb_task();
if (usb_cdc_kbhit())
{
c=usb_cdc_getc();
if (c=='\n') {putc('\r'); putc('\n');}
if (c=='\r') {putc('\r'); putc('\n');}
while(true)
{
d = usb_cdc_getc();
if(d=='U') // push W
{
while (key!=32) // push SPACE BAR to stop
{
if(usb_cdc_kbhit())
{key=usb_cdc_getc();}
read_expanded_inputs(&data);
delay_us(5);
if(bit_test(data,0)) // 1
m1=1;
else
m1=0;
if(bit_test(data,1)) //2
m2=1;
else
m2=0;
if(bit_test(data,2)) //3
m3=1;
else
m3=0;
if(bit_test(data,3)) //4
m4=1;
else
m4=0;
if(bit_test(data,4)) // 5
m5=1;
else
m5=0;
if(bit_test(data,5)) //6
m6=1;
else
m6=0;
if(bit_test(data,6)) //7
m7=1;
else
m7=0;
if(bit_test(data,7)) //8
m8=1;
else
m8=0;
printf(usb_cdc_putc,"\r%d%d%d%d%d%d%d%d ", m1,m2,m3,m4,m5,m6,m7,m8);
} key=0;
}
}
}
}
}
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art
Joined: 21 May 2015
Posts: 181
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| Posted: Mon Dec 12, 2016 9:29 pm |
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| Do you have ideas to simplify the code? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon Dec 12, 2016 11:03 pm |
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Your code uses a programming technique called "unrolling a loop".
You could make it into a for() loop. |
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