/**
* Runs the at_task loop. This loop listens for incomming messages and
* handles them appropriately, checks for timeouts and handles them if
* needed, handles quiet periods between AT commands and submits AT
* commands that have been queued up.
*/
void at_task(struct at_info *ati, const size_t ms_delay)
{
char *msg = serial_buffer_rx(ati->sb, ms_delay);
if (msg)
at_task_run_bytes_read(ati, lstrip_inline(msg));
else
at_task_run_no_bytes(ati);
at_task_quiet_period_handler(ati);
at_task_cmd_handler(ati);
}
size_t serial_buffer_rx_msgs(struct serial_buffer *sb, const size_t ms_delay,
const char *msgs[], size_t msgs_len)
{
size_t msgs_rx = 0;
for (; msgs_len; --msgs_len, ++msgs_rx) {
const char* msg = serial_buffer_rx(sb, ms_delay);
if (!msg)
break;
*msgs++ = msg;
}
return msgs_rx;
}
size_t serial_buffer_rx_msgs(struct serial_buffer *sb, const size_t ms_delay,
const char *msgs[], size_t msgs_len)
{
size_t rx_bytes = 0;
size_t msgs_rx = 0;
for (; msgs_len; --msgs_len, ++msgs_rx) {
const size_t read = serial_buffer_rx(sb, ms_delay);
if (0 == read)
break;
*msgs++ = sb->buffer + rx_bytes;
rx_bytes += read;
}
return msgs_rx;
}
static bool sim900_stop_direct_mode(struct serial_buffer *sb)
{
/* Must delay min 1000ms before stopping direct mode */
delayMs(2000);
/*
* Using straight serial buffer logic here instead of
* the AT command system because we can get data intended for
* the JSON parser while we do this. Also because we don't
* want the \r at the end of the command.
*/
serial_buffer_reset(sb);
serial_buffer_append(sb, "+++");
serial_buffer_tx(sb);
for (size_t events = STOP_DM_RX_EVENTS; events; --events) {
serial_buffer_reset(sb);
if (serial_buffer_rx(sb, STOP_DM_RX_TIMEOUT_MS) &&
is_rsp_ok((const char**) &(sb->buffer), 1))
return true;
}
return false;
}
