int32_t uart_putc(uint8_t uartNum, uint8_t ch)
{
if(uartNum == 0)
{
if(IS_BUFFER_FULL(u0tx))
{
BUFFER_CLEAR(u0tx);
return RET_NOK;
}
else
{
BUFFER_IN(u0tx) = ch;
BUFFER_IN_MOVE(u0tx, 1);
UART_ITConfig(UART0,(UART_IT_FLAG_TXI),ENABLE);
}
}
else if(uartNum == 1)
{
if(IS_BUFFER_FULL(u1tx))
{
BUFFER_CLEAR(u1tx);
return RET_NOK;
}
else
{
UartPutc(UART1,ch);
//BUFFER_IN(u1tx) = ch;
//BUFFER_IN_MOVE(u1tx, 1);
//UART_ITConfig(UART1,(UART_IT_FLAG_TXI),ENABLE);
}
}
return RET_OK;
}
/* This is the Thread which will read data from the Circular buffer
* and print out to the Console
*/
void* consumer_thread(void *arg)
{
circ_buffer_t *rcv_buf;
double mean, smoothed_mean;
int sockfd;
packet_info_t *pkt_info;
double get_rand;
bool data_present, was_buf_full, done = FALSE;
unsigned int ack_seq;
unsigned short new_win;
double prob_loss;
assert(arg);
assert(rcv_buf = ((thread_arg *)arg)->rcv_buf);
assert(((thread_arg *)arg)->config);
mean = smoothed_mean = ((thread_arg *)arg)->config->mean;
prob_loss = ((thread_arg *)arg)->config->prob_loss;
sockfd = ((thread_arg *)arg)->sockfd;
free(arg);
Pthread_detach(pthread_self());
while (!done) {
get_rand = (double)rand()/RAND_MAX;
smoothed_mean = -1.0 * mean * log(get_rand);
printf("[Consumer Thread] Wake Up in %lf ms\n", smoothed_mean);
usleep((useconds_t)(smoothed_mean * 1000));
data_present = FALSE;
was_buf_full = FALSE;
Pthread_mutex_lock(&buf_mutex);
if (IS_BUFFER_FULL(rcv_buf))
was_buf_full = TRUE;
while(read_from_buffer(rcv_buf, &pkt_info) >= 0)
{
data_present = TRUE;
fprintf(stdout, "[Consumer thread] [seq:%u]\n%.*s\n", pkt_info->seq,
pkt_info->data_len, pkt_info->data);
if(IS_EOF(pkt_info))
{
done = TRUE;
break;
}
free_pkt_info(pkt_info);
pkt_info = NULL;
}
/* Save off these values as we are releasing the lock below */
new_win = window_size(rcv_buf);
ack_seq = NEXT_ACK(rcv_buf);
Pthread_mutex_unlock(&buf_mutex);
if (!data_present)
printf("[Consumer Thread] No data this time around\n");
if(was_buf_full)
{
/* Advertise New Opened Up window */
send_ack(sockfd, new_win, 0, ack_seq, 0, prob_loss);
}
}
exit(0);
}
