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| #include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char buf_in[8];
char buf_out[8];
char hh[2];
char mm[2];
char ss[2];
int index_in = 0;
int index_out = 0;
int seconds, hours, minutes, s_max, max_size;
volatile bool read_finished = false;
volatile bool write_started = false;
bool read_started = false;
void SendByte(char* byte)
{
while(*byte)
{
while (!(UCSR0A & (1 << UDRE0))) {}
UDR0 = *(byte++);
}
}
void SendData(char* data, int len)
{
if (write_started == true)
{
int ind = 0;
while(ind < len)
{
while (!(UCSR0A & (1 << UDRE0))) {}
UDR0 = data[ind];
ind++;
}
if (ind == len)
{
SendByte("!\r\n");
}
}
}
void Parse(char* _string)
{
memcpy(hh, _string, sizeof(hh));
memcpy(mm, &_string[3], sizeof(mm));
memcpy(ss, &_string[6], sizeof(ss));
hours = (int) (hh[0] - '0') * 10 + (int) (hh[1] - '0');
minutes = (int) (mm[0] - '0') * 10 + (int) (mm[1] - '0');
seconds = (int) (ss[0] - '0') * 10 + (int) (ss[1] - '0');
}
void BuildString(int h, int m, int s)
{
hh[0] = (char) (h / 10) + '0';
hh[1] = (char) (h % 10) + '0';
mm[0] = (char) (m / 10) + '0';
mm[1] = (char) (m % 10) + '0';
ss[0] = (char) (s / 10) + '0';
ss[1] = (char) (s % 10) + '0';
memcpy(buf_out, hh, sizeof(hh));
memcpy(&buf_out[3], mm, sizeof(mm));
memcpy(&buf_out[6], ss, sizeof(ss));
}
ISR(USORT0_RX_vect)
{
if (read_finished == false)
{
buf_in[index_in] = UDR0;
index_in++;
if (index_in == 8)
{
index_in = 0;
SendByte(buf_in);
SendByte("\r\n");
read_finished = true;
}
}
}
bool Validate()
{
bool res = false;
if ((seconds >=0) && (seconds < 60))
{
if ((minutes >= 0) && (minutes < 60))
{
if ((hours >=0) && (hours < 100))
{
res = true;
}
}
}
return res;
}
int main(void)
{
UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0) | (1 << TXCIE0) | (1 << UDRIE0);
UCSR0C = (0 << UMSEL00) | (0 << UCSZ02) | (1 << UCSZ01) | (1 << UCSZ00);
UBRR0 = 209;
sei();
buf_out[2] = ':';
buf_out[5] = ':';
while (1)
{
while (read_finished == true)
{
memcpy(buf_out, buf_in, sizeof(buf_in));
Parse(buf_in);
write_started = true;
SendData(buf_in, 8);
SendData(hh, 2);
SendData(mm, 2);
SendData(ss, 2);
if (Validate())
{
for (int h = hours; h >= 0; h--)
{
for (int m = minutes; m >= 0; m--)
{
if (m == minutes)
s_max = seconds;
else
s_max = 59;
for (int s = s_max; s >= 0; s--)
{
int tmp = 0;
BuildString(h, m, s);
write_started = false;
_delay_ms(250);
write_started = true;
SendData(buf_out, 8);
//_delay_ms(1000); - если раскомментировать, то отправляется мусор, и цикл прерывается
}
}
}
}
read_finished = false;
}
}
} |
(
