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gadylio
Joined: 29 Mar 2011
Posts: 1
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| pic16f877a through rs232 using max232, garbage is out |
 Posted: Tue Mar 29, 2011 2:31 pm |
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my code is
| Code: |
#include <16F877A.h>
#FUSES XT, NOWDT, NOPROTECT
#USE DELAY(CLOCK = 4000000)
//Hardware UART : TX is RC6, RX is RC7
#USE RS232(baud = 9600, xmit = PIN_C6, rcv = PIN_C7)
//Define inline functions: isupper() and islower()
//isAmong(): checks if the character is in the character list, if so return true else false.
char temp[20];
char x[20];
void main()
{
//======================================
strcpy(temp, "kitchen"); // Copy const string into ram array
// Now you can use strcmp() to compare temp to another array.
// Put your strcmp() code here.
output_high(pin_b7);
delay_ms(500);
output_low(pin_b7);
delay_ms(500);
delay_ms(2000);
printf("kitchen\n");//
delay_ms(2000);
printf("bath\n");
delay_ms(2000);
printf("gad5ra\n");
delay_ms(2000);
printf("2skot\n");
while(1)
{
gets(x); //getc() is used for receiving one character from PC.
if(strcmp(temp,x))
{
output_high(pin_b7);
delay_ms(2000);
}
}
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Mar 29, 2011 3:29 pm |
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| Quote: | if(strcmp(temp,x))
{
output_high(pin_b7);
delay_ms(2000);
}
}
} |
strcmp() returns 0 if the strings match. So, if string 'x' matches string
'temp', the code above will NOT execute. Pin B7 will not go high. |
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