boolean sim900_wait_for_resp(const char* resp, DataType type, unsigned int timeout, unsigned int chartimeout)
{
int len = strlen(resp);
int sum = 0;
unsigned long timerStart, prevChar; //prevChar is the time when the previous Char has been read.
timerStart = millis();
prevChar = 0;
while(1) {
if(sim900_check_readable()) {
char c = serialSIM900->read();
DEBUG("-");
DEBUG(c);
prevChar = millis();
sum = (c==resp[sum]) ? sum+1 : 0;
if(sum == len)break;
}
if ((unsigned long) (millis() - timerStart) > timeout * 1000UL) {
return false;
}
//If interchar Timeout => return FALSE. So we can return sooner from this function.
if (((unsigned long) (millis() - prevChar) > chartimeout) && (prevChar != 0)) {
return false;
}
}
//If is a CMD, we will finish to read buffer.
if(type == CMD) sim900_flush_serial();
return true;
}
int sim900_wait_readable (int wait_time)
{
unsigned long timerStart;
int dataLen = 0;
timerStart = millis();
while((unsigned long) (millis() - timerStart) > wait_time * 1000UL) {
delay(500);
dataLen = sim900_check_readable();
if(dataLen > 0){
break;
}
}
return dataLen;
}
void sim900_read_buffer(char *buffer, int count, unsigned int timeout, unsigned int chartimeout)
{
int i = 0;
unsigned long timerStart, prevChar;
timerStart = millis();
prevChar = 0;
while(1) {
while (sim900_check_readable()) {
char c = serialSIM900->read();
prevChar = millis();
buffer[i++] = c;
if(i >= count)break;
}
if(i >= count)break;
if ((unsigned long) (millis() - timerStart) > timeout * 1000UL) {
break;
}
//If interchar Timeout => return FALSE. So we can return sooner from this function. Not DO it if we dont recieve at least one char (prevChar <> 0)
if (((unsigned long) (millis() - prevChar) > chartimeout) && (prevChar != 0)) {
break;
}
}
}
int GPRS::readable(void)
{
return sim900_check_readable();
}
void sim900_flush_serial()
{
while(sim900_check_readable()){
serialSIM900->read();
}
}
