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#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "i2c-util.h"
int main(int argc, char **argv)
{
char line[8];
signed char i;
short int number;
i2c_init();
i2c_start();
puts("ready");
while (fgets(line, 8, stdin) != NULL) {
if (sscanf(line, "%hi\n", &number) == 1) {
if ((number >= 0) && (number <= 256)) {
for (i = 7; i >= -1; i--) {
if ((i < 0) || (number == 256) || (number & (1 << i))) {
puts("sda ↑");
set_sda(1);
//verify_sda_high();
} else {
puts("sda ↓");
set_sda(0);
//verify_sda_low();
}
usleep(10);
puts("scl ↑");
set_scl(1);
usleep(10);
//verify_scl_high();
if (i < 0) {
if (get_status() & (1 << BIT_SDA))
puts("> NAK");
else
puts("> ACK");
}
else if (number == 256) {
if (get_status() & (1 << BIT_SDA))
puts("1");
else
puts("0");
}
puts("scl ↓");
set_scl(0);
usleep(10);
//verify_scl_low();
}
}
}
if (strcmp(line, "push\n") == 0) {
i2c_stop();
i2c_start();
}
}
i2c_stop();
i2c_deinit();
return 0;
}
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