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| int8_t sendATcommand(char* ATcommand, char* expected_answer, unsigned int timeout){ | |
| uint8_t x=0, answer=0; | |
| char response[100]; | |
| unsigned long previous; | |
| memset(response, '\0', 100); // Clean response buffer | |
| delay(100); // Delay to be sure no passed commands interfere | |
| while( Serial.available() > 0) Serial.read(); // Wait for clean input buffer | |
| Serial.println(ATcommand); // Send the AT command | |
| previous = millis(); | |
| // this loop waits for the answer | |
| do{ | |
| // if there are data in the UART input buffer, reads it and checks for the asnwer | |
| if(Serial.available() != 0){ | |
| response[x] = Serial.read(); | |
| x++; | |
| // check if the desired answer is in the response of the module | |
| if (strstr(response, expected_answer) != NULL){ | |
| answer = 1; | |
| } | |
| } | |
| // Waits for the answer with time out | |
| } while((answer == 0) && ((millis() - previous) < timeout)); | |
| return answer; | |
| } |
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