avr-crypto-lib/serial-tools.c

65 lines
1.2 KiB
C

/**
*
* Author: Daniel Otte
* Date: 16.05.2006
*
* This tools should help to parse some input.
*
*/
#include "config.h"
#include "uart.h"
#include <string.h>
#include <stdint.h>
int getnextwordn(char *s, int n){ /* words are seperated by spaces */
char c = ' ';
while ((c=uart_getc()) == ' ')
;
*s++ = c;
while (n && (*s++=uart_getc())!=' ')
;
*(s-1) = '\0';
return n;
}
void readhex2buffer(void* buffer, int n){
char c;
uint8_t i;
// DEBUG_S("\r\nDBG: n="); DEBUG_B(n&0xff); DEBUG_S("\r\n");
for(i=0; i<n; ++i){
c = uart_getc();
if ('0'<= c && '9'>=c){
((uint8_t*)buffer)[i] = c - '0';
} else {
c &= ~('A' ^ 'a'); /* make all uppercase */
if ('A'<= c && 'F'>=c){
((uint8_t*)buffer)[i] = c - 'A' + 10;
} else {
/* oh shit, wrong char */
}
}
((uint8_t*)buffer)[i] <<= 4;
c = uart_getc();
if ('0'<= c && '9'>=c){
((uint8_t*)buffer)[i] |= c - '0';
} else {
c &= ~('A' ^ 'a'); /* make all uppercase */
if ('A'<= c && 'F'>=c){
((uint8_t*)buffer)[i] |= c - 'A' + 10;
} else {
/* oh shit, wrong char */
}
}
} /* for i=0 .. n */
}
void uart_putptr(void* p){
uart_hexdump((void*) &p,2);
}