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// (C) 2017 Joshua Allen, MIT/x11 License.
//
//All MIT/x11 Licensed Code in this file may be relicensed freely under the GPL or LGPL licenses.
/* generate data to test ootx decoding */
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <time.h>
#include <stdlib.h>
#include <zlib.h>
//this program is broken and does not produce useable data.
uint32_t time_stamp = -525198892;
char* fmt_str = "L Y HMD %d 5 1 206230 %d\n";
void print_bit(uint8_t data);
void print_preamble();
void print_uint16(uint16_t d);
void print_uint32(uint32_t d);
void print_payload(char* data, uint16_t length);
int main(int argc, char* argv[])
{
char* str = "Hello World!";
// printf("%s\n", str);
srand(time(NULL));
print_preamble();
uint16_t payload_lenth = strlen(str);
uint32_t crc = crc32( 0L, Z_NULL, 0 );
crc = crc32( crc, (uint8_t*)str,payload_lenth);
print_uint16(payload_lenth);
print_payload(str,payload_lenth);
print_uint32(crc);
return 0;
}
void print_preamble() {
int i;
for (i=0;i<17;++i) print_bit(0);
print_bit(1);
}
void print_uint16(uint16_t d) {
int i;
for (i=0;i<16;++i) {
print_bit(d & 0x0001);
d>>=1;
}
print_bit(1);
}
void print_uint32(uint32_t d) {
int i = 0;
for (;i<16;++i) {
print_bit(d & 0x01);
d>>=1;
}
print_bit(1);
for (;i<32;++i) {
print_bit(d & 0x01);
d>>=1;
}
print_bit(1);
}
void print_payload(char* data, uint16_t length) {
int i;
for(i=0;i<length;i+=2) {
uint16_t d = *((uint16_t*)(data+i));
// printf("%d\n", d);
print_uint16(d);
}
}
void print_bit(uint8_t data) {
uint32_t length = 3000 + (rand()%2)*500 + data*1000 + (rand()%2)*2000;
length -= rand()%500;
printf(fmt_str, time_stamp, length);
time_stamp++;
/*
//to decode
// 3000 + x*500 + dbit*1000 + y*2000
length -= 3000;
if (length>=2000) { length-=2000; y = 0x01; }
if (length>=1000) { length-=1000; dbit = 0x01; }
if (length>=500) { x = 0x01; }
*/
//fire off a callback when a full OOTX packet is received
}
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