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uslimey
Joined: 27 Aug 2011
Posts: 22
Location: Baltimore, MD
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| BITWISE & not working... |
 Posted: Tue Jan 16, 2018 6:57 pm |
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I am trying to do a bitwise AND on two uInt16 numbers.
unsigned int16 A = 0b0001000000000000;
unsigned int16 B = 0b0001010101010101;
A &= B; // the result (A) should be 0b0001000000000000, instead the result is 0???
This makes no sense... Try it again...
unsigned int16 A = 0b0001000000000000;
unsigned int16 B = 0b0001010101010101;
unsigned int16 C = A & B; // the result (C) should be 0b0001000000000000, instead the result is 0???
This is with a PIC16F722A and version 5.075 of the compiler...
Any suggestions? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Jan 16, 2018 7:24 pm |
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The first test gives 0x1000, which is accurate:
First test program:
| Code: |
#include <16F722A.h>
#fuses INTRC_IO, NOWDT
#use delay(clock=4M)
#use rs232(baud=9600, UART1, ERRORS)
//======================
void main()
{
unsigned int16 A = 0b0001000000000000;
unsigned int16 B = 0b0001010101010101;
A &= B;
printf("A = %lx \r", A);
while(TRUE);
}
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The 2nd test also gives 0x1000, which is accurate.
So I think you may have a problem with your binary display routine.
These tests were both done in MPLAB v8.92 simulator with CCS v5.075.
2nd test program.
| Code: | #include <16F722A.h>
#fuses INTRC_IO, NOWDT
#use delay(clock=4M)
#use rs232(baud=9600, UART1, ERRORS)
//======================
void main()
{
unsigned int16 A = 0b0001000000000000;
unsigned int16 B = 0b0001010101010101;
unsigned int16 C = A & B;
printf("C = %lx \r", C);
while(TRUE);
} |
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