void output_byte(uint8_t rs, uint8_t data, uint8_t en)
{
output_nibble(rs, HIGH_NIBBLE(data), en);
output_nibble(rs, LOW_NIBBLE(data), en);
#ifdef HD44780_READBACK
/* wait until command is executed by checking busy flag, with timeout */
/* max execution time is for return home command,
* which takes at most 1.52ms = 1520us */
uint8_t busy, timeout = 200;
do {
busy = input_byte(0,en) & _BV(BUSY_FLAG);
_delay_us(10);
timeout--;
} while (busy && timeout > 0);
#ifdef DEBUG
if (timeout == 0)
debug_printf("lcd timeout!\n");
#endif
#else
/* just wait the maximal time a command can take... */
_delay_ms(2);
#endif
}
int main(int argc, char **argv)
{
FILE *f;
struct stat st;
int n_read;
byte *b;
stat("/etc/passwd", &st);
f = fopen("/etc/passwd", "r");
b = (byte *)malloc(st.st_size + 1);
memset(b, 0, st.st_size + 1);
n_read = fread(b, sizeof(byte), st.st_size, f);
fclose(f);
if (!input_initialize((char *)b))
return -1;
while (!input_eof())
fputc((int)input_byte(), stdout);
input_cleanup();
free(b);
return 0;
}
int main(int argc, char **argv)
{
if (!input_initialize(NULL))
return -1;
while (!input_eof())
fputc((int)input_byte(), stdout);
input_cleanup();
return 0;
}
