I am a newbie to Arduino. The specific project I am trying to build is the FONA 808 Geo fencing project described here:
https://learn.adafruit.com/geofencing-w ... troduction
I started on this path 3 weeks ago, spending hours on the weekends. As a result, I now have a working Arduino IDE and have familiarized myself with basic tasks like uploading the code, understanding what libraries are needed, how to include those libraries, compiling, uploading the sketch and running the Serial monitor.
Coming from a java, non-hardware background. I have a basic understanding of the C++ code in the sketch and library files. That said, I have been testing the sketch gps_test.ino in the Arduino GeoFencing project (arduino-geofencing-master), but I did not get very far because I get the error: Couldn't find FONA
At one point in my testing, I gave up on gps_test and instead started afresh on the sketch FONAtest.ino with my FONA (SIM attached, antenna, battery, etc).
First, here is the result of my effort at putting together the hardware with all wiring, etc. At this point, I left out the LED , the buzzer, and the resistor, because leaving them out at this point, does not make a difference, I think.
- arduino-fona-gps-fence-1.JPG (82.45 KiB) Viewed 948 times
Timeout: No response to AT... last ditch attempt.
---> AT
<---
---> AT
<---
---> AT
<---
---> ATE0
<---
---> ATE0
<---
Couldn't find FONA
I think I have narrowed down where the problem is, at least in the code. It appears to be failing in the setup method in Fonatest, specifically in the line "fona.begin("fonalSerial")
Now, I have set up the GPRS APN to "wholesale" which is the apn provided to me by Ting. There is no username and password.
Code: Select all
if (! fona.begin(*fonaSerial)) {
Serial.println(F("Couldn't find FONA"));
while (1);
}Digging deeper, from "fona.begin..." in the sketch, I peeked into the library method begin() in Adafruit_fona.cpp. It appears to be failing in the while loop, and then doing the timeout, complaining that there is no response to AT.
Code: Select all
while (timeout > 0) {
while (mySerial->available()) mySerial->read();
if (sendCheckReply(F("AT"), ok_reply))
break;
while (mySerial->available()) mySerial->read();
if (sendCheckReply(F("AT"), F("AT")))
break;
delay(500);
timeout-=500;
}
if (timeout <= 0) {
#ifdef ADAFRUIT_FONA_DEBUG
DEBUG_PRINTLN(F("Timeout: No response to AT... last ditch attempt."));Code: Select all
/***************************************************
This is an example for our Adafruit FONA Cellular Module
Designed specifically to work with the Adafruit FONA
----> http://www.adafruit.com/products/1946
----> http://www.adafruit.com/products/1963
----> http://www.adafruit.com/products/2468
----> http://www.adafruit.com/products/2542
These cellular modules use TTL Serial to communicate, 2 pins are
required to interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
/*
THIS CODE IS STILL IN PROGRESS!
Open up the serial console on the Arduino at 115200 baud to interact with FONA
Note that if you need to set a GPRS APN, username, and password scroll down to
the commented section below at the end of the setup() function.
*/
#include "Adafruit_FONA.h"
#define FONA_RX 2
#define FONA_TX 3
//#define FONA_RX 10
//#define FONA_TX 11
#define FONA_RST 4
#define FONA_KEY 6 //connection to FONA KEY
#define FONA_PS 7 //connect to FONA PS
//#define FONA_RX 3
//#define FONA_TX 4
//#define FONA_RST 6
//#define FONA_RI 7
// this is a large buffer for replies
char replybuffer[255];
#include <SoftwareSerial.h>
SoftwareSerial fonaSS = SoftwareSerial(FONA_TX, FONA_RX);
SoftwareSerial *fonaSerial = &fonaSS;
// Hardware serial is also possible!
// HardwareSerial *fonaSerial = &Serial1;
// Use this for FONA 800 and 808s
Adafruit_FONA fona = Adafruit_FONA(FONA_RST);
// Use this one for FONA 3G
//Adafruit_FONA_3G fona = Adafruit_FONA_3G(FONA_RST);
uint8_t readline(char *buff, uint8_t maxbuff, uint16_t timeout = 0);
uint8_t type;
void setup() {
while (!Serial);
// Open serial communications and wait for port to open:
Serial.begin(115200);
//Serial.begin(9600);
Serial.println(F("FONA basic test"));
Serial.println(F("Initializing....(May take 3 seconds)"));
fonaSerial->begin(4800);
// set the data rate for the SoftwareSerial port
if (! fona.begin(*fonaSerial)) {
//if (! fona.begin(fonaSS)) {
Serial.println(F("Couldn't find FONA"));
while (1);
}
type = fona.type();
Serial.print("Fona Type: "); Serial.println(type);
Serial.println(F("FONA is OK"));
Serial.print(F("Found "));
switch (type) {
case FONA800L:
Serial.println(F("FONA 800L")); break;
case FONA800H:
Serial.println(F("FONA 800H")); break;
case FONA808_V1:
Serial.println(F("FONA 808 (v1)")); break;
case FONA808_V2:
Serial.println(F("FONA 808 (v2)")); break;
case FONA3G_A:
Serial.println(F("FONA 3G (American)")); break;
case FONA3G_E:
Serial.println(F("FONA 3G (European)")); break;
default:
Serial.println(F("???")); break;
}
[attachment=0]arduino-fona-gps-fence-1.JPG[/attachment]
// Optionally configure a GPRS APN, username, and password.
// You might need to do this to access your network's GPRS/data
// network. Contact your provider for the exact APN, username,
// and password values. Username and password are optional and
// can be removed, but APN is required.
//fona.setGPRSNetworkSettings(F("your APN"), F("your username"), F("your password"));
// Optionally configure HTTP gets to follow redirects over SSL.
// Default is not to follow SSL redirects, however if you uncomment
// the following line then redirects over SSL will be followed.
//fona.setHTTPSRedirect(true);
//printMenu();
}
void printMenu(void) {
Serial.println(F("-------------------------------------"));
Serial.println(F("[?] Print this menu"));
Serial.println(F("[a] read the ADC 2.8V max (FONA800 & 808)"));
Serial.println(F("[b] read the Battery V and % charged"));
Serial.println(F("[C] read the SIM CCID"));
Serial.println(F("[U] Unlock SIM with PIN code"));
Serial.println(F("[i] read RSSI"));
Serial.println(F("[n] get Network status"));
Serial.println(F("[v] set audio Volume"));
Serial.println(F("[V] get Volume"));
Serial.println(F("[H] set Headphone audio (FONA800 & 808)"));
Serial.println(F("[e] set External audio (FONA800 & 808)"));
Serial.println(F("[T] play audio Tone"));
Serial.println(F("[P] PWM/Buzzer out (FONA800 & 808)"));
// FM (SIM800 only!)
Serial.println(F("[f] tune FM radio (FONA800)"));
Serial.println(F("[F] turn off FM (FONA800)"));
Serial.println(F("[m] set FM volume (FONA800)"));
Serial.println(F("[M] get FM volume (FONA800)"));
Serial.println(F("[q] get FM station signal level (FONA800)"));
// Phone
Serial.println(F("[c] make phone Call"));
Serial.println(F("[A] get call status"));
Serial.println(F("[h] Hang up phone"));
Serial.println(F("[p] Pick up phone"));
// SMS
Serial.println(F("[N] Number of SMSs"));
Serial.println(F("[r] Read SMS #"));
Serial.println(F("[R] Read All SMS"));
Serial.println(F("[d] Delete SMS #"));
Serial.println(F("[s] Send SMS"));
Serial.println(F("[u] Send USSD"));
// Time
Serial.println(F("[y] Enable network time sync (FONA 800 & 808)"));
Serial.println(F("[Y] Enable NTP time sync (GPRS FONA 800 & 808)"));
Serial.println(F("[t] Get network time"));
// GPRS
Serial.println(F("[G] Enable GPRS"));
Serial.println(F("[g] Disable GPRS"));
Serial.println(F("[l] Query GSMLOC (GPRS)"));
Serial.println(F("[w] Read webpage (GPRS)"));
Serial.println(F("[W] Post to website (GPRS)"));
// GPS
if ((type == FONA3G_A) || (type == FONA3G_E) || (type == FONA808_V1) || (type == FONA808_V2)) {
Serial.println(F("[O] Turn GPS on (FONA 808 & 3G)"));
Serial.println(F("[o] Turn GPS off (FONA 808 & 3G)"));
Serial.println(F("[L] Query GPS location (FONA 808 & 3G)"));
if (type == FONA808_V1) {
Serial.println(F("[x] GPS fix status (FONA808 v1 only)"));
}
Serial.println(F("[E] Raw NMEA out (FONA808)"));
}
Serial.println(F("[S] create Serial passthru tunnel"));
Serial.println(F("-------------------------------------"));
Serial.println(F(""));
}
void loop() {
Serial.print(F("FONA> "));
// while (! Serial.available() ) {
// if (fona.available()) {
// Serial.println("fona is available");
// Serial.write(fona.read());
// }
// }
if (fona.available()) {
Serial.println("fona is available");
Serial.write(fona.read());
}
if (Serial.available()) {
fonaSS.write(Serial.read());
}
char command = Serial.read();
Serial.println("command from serial.read() is: " + command);
//Serial.println(command);
switch (command) {
case '?': {
printMenu();
break;
}
case 'a': {
// read the ADC
uint16_t adc;
if (! fona.getADCVoltage(&adc)) {
Serial.println(F("Failed to read ADC"));
} else {
Serial.print(F("ADC = ")); Serial.print(adc); Serial.println(F(" mV"));
}
break;
}
case 'b': {
// read the battery voltage and percentage
uint16_t vbat;
if (! fona.getBattVoltage(&vbat)) {
Serial.println(F("Failed to read Batt"));
} else {
Serial.print(F("VBat = ")); Serial.print(vbat); Serial.println(F(" mV"));
}
if (! fona.getBattPercent(&vbat)) {
Serial.println(F("Failed to read Batt"));
} else {
Serial.print(F("VPct = ")); Serial.print(vbat); Serial.println(F("%"));
}
break;
}
case 'U': {
// Unlock the SIM with a PIN code
char PIN[5];
flushSerial();
Serial.println(F("Enter 4-digit PIN"));
readline(PIN, 3);
Serial.println(PIN);
Serial.print(F("Unlocking SIM card: "));
if (! fona.unlockSIM(PIN)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
case 'C': {
// read the CCID
fona.getSIMCCID(replybuffer); // make sure replybuffer is at least 21 bytes!
Serial.print(F("SIM CCID = ")); Serial.println(replybuffer);
break;
}
case 'i': {
// read the RSSI
uint8_t n = fona.getRSSI();
int8_t r;
Serial.print(F("RSSI = ")); Serial.print(n); Serial.print(": ");
if (n == 0) r = -115;
if (n == 1) r = -111;
if (n == 31) r = -52;
if ((n >= 2) && (n <= 30)) {
r = map(n, 2, 30, -110, -54);
}
Serial.print(r); Serial.println(F(" dBm"));
break;
}
case 'n': {
// read the network/cellular status
uint8_t n = fona.getNetworkStatus();
Serial.print(F("Network status "));
Serial.print(n);
Serial.print(F(": "));
if (n == 0) Serial.println(F("Not registered"));
if (n == 1) Serial.println(F("Registered (home)"));
if (n == 2) Serial.println(F("Not registered (searching)"));
if (n == 3) Serial.println(F("Denied"));
if (n == 4) Serial.println(F("Unknown"));
if (n == 5) Serial.println(F("Registered roaming"));
break;
}
/*** Audio ***/
case 'v': {
// set volume
flushSerial();
if ( (type == FONA3G_A) || (type == FONA3G_E) ) {
Serial.print(F("Set Vol [0-8] "));
} else {
Serial.print(F("Set Vol % [0-100] "));
}
uint8_t vol = readnumber();
Serial.println();
if (! fona.setVolume(vol)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
case 'V': {
uint8_t v = fona.getVolume();
Serial.print(v);
if ( (type == FONA3G_A) || (type == FONA3G_E) ) {
Serial.println(" / 8");
} else {
Serial.println("%");
}
break;
}
case 'H': {
// Set Headphone output
if (! fona.setAudio(FONA_HEADSETAUDIO)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
fona.setMicVolume(FONA_HEADSETAUDIO, 15);
break;
}
case 'e': {
// Set External output
if (! fona.setAudio(FONA_EXTAUDIO)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
fona.setMicVolume(FONA_EXTAUDIO, 10);
break;
}
case 'T': {
// play tone
flushSerial();
Serial.print(F("Play tone #"));
uint8_t kittone = readnumber();
Serial.println();
// play for 1 second (1000 ms)
if (! fona.playToolkitTone(kittone, 1000)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
/*** FM Radio ***/
case 'f': {
// get freq
flushSerial();
Serial.print(F("FM Freq (eg 1011 == 101.1 MHz): "));
uint16_t station = readnumber();
Serial.println();
// FM radio ON using headset
if (fona.FMradio(true, FONA_HEADSETAUDIO)) {
Serial.println(F("Opened"));
}
if (! fona.tuneFMradio(station)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("Tuned"));
}
break;
}
case 'F': {
// FM radio off
if (! fona.FMradio(false)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
case 'm': {
// Set FM volume.
flushSerial();
Serial.print(F("Set FM Vol [0-6]:"));
uint8_t vol = readnumber();
Serial.println();
if (!fona.setFMVolume(vol)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
case 'M': {
// Get FM volume.
uint8_t fmvol = fona.getFMVolume();
if (fmvol < 0) {
Serial.println(F("Failed"));
} else {
Serial.print(F("FM volume: "));
Serial.println(fmvol, DEC);
}
break;
}
case 'q': {
// Get FM station signal level (in decibels).
flushSerial();
Serial.print(F("FM Freq (eg 1011 == 101.1 MHz): "));
uint16_t station = readnumber();
Serial.println();
int8_t level = fona.getFMSignalLevel(station);
if (level < 0) {
Serial.println(F("Failed! Make sure FM radio is on (tuned to station)."));
} else {
Serial.print(F("Signal level (dB): "));
Serial.println(level, DEC);
}
break;
}
/*** PWM ***/
case 'P': {
// PWM Buzzer output @ 2KHz max
flushSerial();
Serial.print(F("PWM Freq, 0 = Off, (1-2000): "));
uint16_t freq = readnumber();
Serial.println();
if (! fona.setPWM(freq)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
/*** Call ***/
case 'c': {
// call a phone!
char number[30];
flushSerial();
Serial.print(F("Call #"));
readline(number, 30);
Serial.println();
Serial.print(F("Calling ")); Serial.println(number);
if (!fona.callPhone(number)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("Sent!"));
}
break;
}
case 'A': {
// get call status
int8_t callstat = fona.getCallStatus();
switch (callstat) {
case 0: Serial.println(F("Ready")); break;
case 1: Serial.println(F("Could not get status")); break;
case 3: Serial.println(F("Ringing (incoming)")); break;
case 4: Serial.println(F("Ringing/in progress (outgoing)")); break;
default: Serial.println(F("Unknown")); break;
}
break;
}
case 'h': {
// hang up!
if (! fona.hangUp()) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
case 'p': {
// pick up!
if (! fona.pickUp()) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}
break;
}
/*** SMS ***/
case 'N': {
// read the number of SMS's!
int8_t smsnum = fona.getNumSMS();
if (smsnum < 0) {
Serial.println(F("Could not read # SMS"));
} else {
Serial.print(smsnum);
Serial.println(F(" SMS's on SIM card!"));
}
break;
}
case 'r': {
// read an SMS
flushSerial();
Serial.print(F("Read #"));
uint8_t smsn = readnumber();
Serial.print(F("\n\rReading SMS #")); Serial.println(smsn);
// Retrieve SMS sender address/phone number.
if (! fona.getSMSSender(smsn, replybuffer, 250)) {
Serial.println("Failed!");
break;
}
Serial.print(F("FROM: ")); Serial.println(replybuffer);
// Retrieve SMS value.
uint16_t smslen;
if (! fona.readSMS(smsn, replybuffer, 250, &smslen)) { // pass in buffer and max len!
Serial.println("Failed!");
break;
}
Serial.print(F("***** SMS #")); Serial.print(smsn);
Serial.print(" ("); Serial.print(smslen); Serial.println(F(") bytes *****"));
Serial.println(replybuffer);
Serial.println(F("*****"));
break;
}
case 'R': {
// read all SMS
int8_t smsnum = fona.getNumSMS();
uint16_t smslen;
int8_t smsn;
if ( (type == FONA3G_A) || (type == FONA3G_E) ) {
smsn = 0; // zero indexed
smsnum--;
} else {
smsn = 1; // 1 indexed
}
for ( ; smsn <= smsnum; smsn++) {
Serial.print(F("\n\rReading SMS #")); Serial.println(smsn);
if (!fona.readSMS(smsn, replybuffer, 250, &smslen)) { // pass in buffer and max len!
Serial.println(F("Failed!"));
break;
}
// if the length is zero, its a special case where the index number is higher
// so increase the max we'll look at!
if (smslen == 0) {
Serial.println(F("[empty slot]"));
smsnum++;
continue;
}
Serial.print(F("***** SMS #")); Serial.print(smsn);
Serial.print(" ("); Serial.print(smslen); Serial.println(F(") bytes *****"));
Serial.println(replybuffer);
Serial.println(F("*****"));
}
break;
}
case 'd': {
// delete an SMS
flushSerial();
Serial.print(F("Delete #"));
uint8_t smsn = readnumber();
Serial.print(F("\n\rDeleting SMS #")); Serial.println(smsn);
if (fona.deleteSMS(smsn)) {
Serial.println(F("OK!"));
} else {
Serial.println(F("Couldn't delete"));
}
break;
}
case 's': {
// send an SMS!
char sendto[21], message[141];
flushSerial();
Serial.print(F("Send to #"));
readline(sendto, 20);
Serial.println(sendto);
Serial.print(F("Type out one-line message (140 char): "));
readline(message, 140);
Serial.println(message);
if (!fona.sendSMS(sendto, message)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("Sent!"));
}
break;
}
case 'u': {
// send a USSD!
char message[141];
flushSerial();
Serial.print(F("Type out one-line message (140 char): "));
readline(message, 140);
Serial.println(message);
uint16_t ussdlen;
if (!fona.sendUSSD(message, replybuffer, 250, &ussdlen)) { // pass in buffer and max len!
Serial.println(F("Failed"));
} else {
Serial.println(F("Sent!"));
Serial.print(F("***** USSD Reply"));
Serial.print(" ("); Serial.print(ussdlen); Serial.println(F(") bytes *****"));
Serial.println(replybuffer);
Serial.println(F("*****"));
}
}
/*** Time ***/
case 'y': {
// enable network time sync
if (!fona.BANNED(true))
Serial.println(F("Failed to enable"));
break;
}
case 'Y': {
// enable NTP time sync
if (!fona.enableNTPTimeSync(true, F("pool.ntp.org")))
Serial.println(F("Failed to enable"));
break;
}
case 't': {
// read the time
char buffer[23];
fona.getTime(buffer, 23); // make sure replybuffer is at least 23 bytes!
Serial.print(F("Time = ")); Serial.println(buffer);
break;
}
/*********************************** GPS (SIM808 only) */
case 'o': {
// turn GPS off
if (!fona.enableGPS(false))
Serial.println(F("Failed to turn off"));
break;
}
case 'O': {
// turn GPS on
if (!fona.enableGPS(true))
Serial.println(F("Failed to turn on"));
break;
}
case 'x': {
int8_t stat;
// check GPS fix
stat = fona.GPSstatus();
if (stat < 0)
Serial.println(F("Failed to query"));
if (stat == 0) Serial.println(F("GPS off"));
if (stat == 1) Serial.println(F("No fix"));
if (stat == 2) Serial.println(F("2D fix"));
if (stat == 3) Serial.println(F("3D fix"));
break;
}
case 'L': {
// check for GPS location
char gpsdata[120];
fona.getGPS(0, gpsdata, 120);
if (type == FONA808_V1)
Serial.println(F("Reply in format: mode,longitude,latitude,altitude,utctime(yyyymmddHHMMSS),ttff,satellites,speed,course"));
else
Serial.println(F("Reply in format: mode,fixstatus,utctime(yyyymmddHHMMSS),latitude,longitude,altitude,speed,course,fixmode,reserved1,HDOP,PDOP,VDOP,reserved2,view_satellites,used_satellites,reserved3,C/N0max,HPA,VPA"));
Serial.println(gpsdata);
break;
}
case 'E': {
flushSerial();
if (type == FONA808_V1) {
Serial.print(F("GPS NMEA output sentences (0 = off, 34 = RMC+GGA, 255 = all)"));
} else {
Serial.print(F("On (1) or Off (0)? "));
}
uint8_t nmeaout = readnumber();
// turn on NMEA output
fona.enableGPSNMEA(nmeaout);
break;
}
/*********************************** GPRS */
case 'g': {
// turn GPRS off
if (!fona.enableGPRS(false))
Serial.println(F("Failed to turn off"));
break;
}
case 'G': {
// turn GPRS on
if (!fona.enableGPRS(true))
Serial.println(F("Failed to turn on"));
break;
}
case 'l': {
// check for GSMLOC (requires GPRS)
uint16_t returncode;
if (!fona.getGSMLoc(&returncode, replybuffer, 250))
Serial.println(F("Failed!"));
if (returncode == 0) {
Serial.println(replybuffer);
} else {
Serial.print(F("Fail code #")); Serial.println(returncode);
}
break;
}
case 'w': {
// read website URL
uint16_t statuscode;
int16_t length;
char url[80];
flushSerial();
Serial.println(F("NOTE: in beta! Use small webpages to read!"));
Serial.println(F("URL to read (e.g. www.adafruit.com/testwifi/index.html):"));
Serial.print(F("http://")); readline(url, 79);
Serial.println(url);
Serial.println(F("****"));
if (!fona.HTTP_GET_start(url, &statuscode, (uint16_t *)&length)) {
Serial.println("Failed!");
break;
}
while (length > 0) {
while (fona.available()) {
char c = fona.read();
// Serial.write is too slow, we'll write directly to Serial register!
#if defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__)
loop_until_bit_is_set(UCSR0A, UDRE0); /* Wait until data register empty. */
UDR0 = c;
#else
Serial.write(c);
#endif
length--;
if (! length) break;
}
}
Serial.println(F("\n****"));
fona.HTTP_GET_end();
break;
}
case 'W': {
// Post data to website
uint16_t statuscode;
int16_t length;
char url[80];
char data[80];
flushSerial();
Serial.println(F("NOTE: in beta! Use simple websites to post!"));
Serial.println(F("URL to post (e.g. httpbin.org/post):"));
Serial.print(F("http://")); readline(url, 79);
Serial.println(url);
Serial.println(F("Data to post (e.g. \"foo\" or \"{\"simple\":\"json\"}\"):"));
readline(data, 79);
Serial.println(data);
Serial.println(F("****"));
if (!fona.HTTP_POST_start(url, F("text/plain"), (uint8_t *) data, strlen(data), &statuscode, (uint16_t *)&length)) {
Serial.println("Failed!");
break;
}
while (length > 0) {
while (fona.available()) {
char c = fona.read();
#if defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__)
loop_until_bit_is_set(UCSR0A, UDRE0); /* Wait until data register empty. */
UDR0 = c;
#else
Serial.write(c);
#endif
length--;
if (! length) break;
}
}
Serial.println(F("\n****"));
fona.HTTP_POST_end();
break;
}
/*****************************************/
case 'S': {
Serial.println(F("Creating SERIAL TUBE"));
while (1) {
while (Serial.available()) {
delay(1);
fona.write(Serial.read());
}
if (fona.available()) {
Serial.write(fona.read());
}
}
break;
}
default: {
Serial.println(F("Unknown command"));
printMenu();
break;
}
}
// flush input
flushSerial();
while (fona.available()) {
Serial.write(fona.read());
}
}
void flushSerial() {
while (Serial.available())
Serial.read();
}
char readBlocking() {
while (!Serial.available());
return Serial.read();
}
uint16_t readnumber() {
uint16_t x = 0;
char c;
while (! isdigit(c = readBlocking())) {
//Serial.print(c);
}
Serial.print(c);
x = c - '0';
while (isdigit(c = readBlocking())) {
Serial.print(c);
x *= 10;
x += c - '0';
}
return x;
}
uint8_t readline(char *buff, uint8_t maxbuff, uint16_t timeout) {
uint16_t buffidx = 0;
boolean timeoutvalid = true;
if (timeout == 0) timeoutvalid = false;
while (true) {
if (buffidx > maxbuff) {
//Serial.println(F("SPACE"));
break;
}
while (Serial.available()) {
char c = Serial.read();
//Serial.print(c, HEX); Serial.print("#"); Serial.println(c);
if (c == '\r') continue;
if (c == 0xA) {
if (buffidx == 0) // the first 0x0A is ignored
continue;
timeout = 0; // the second 0x0A is the end of the line
timeoutvalid = true;
break;
}
buff[buffidx] = c;
buffidx++;
}
if (timeoutvalid && timeout == 0) {
//Serial.println(F("TIMEOUT"));
break;
}
delay(1);
}
buff[buffidx] = 0; // null term
return buffidx;
}
boolean fonainit(void) {
Serial.println(F("Initializing....(May take 3 seconds)"));
// digitalWrite(LED, HIGH);
// delay(100);
// digitalWrite(LED, LOW);
// delay(100);
// digitalWrite(LED, HIGH);
// delay(100);
// digitalWrite(LED, LOW);
// delay(100);
// make it slow so its easy to read!
fonaSS.begin(4800); // if you're using software serial
//Serial1.begin(4800); // if you're using hardware serial
// See if the FONA is responding
if (! fona.begin(fonaSS)) { // can also try fona.begin(Serial1)
Serial.println(F("Couldn't find FONA"));
return false;
}
Serial.println(F("FONA is OK"));
return true;
}
I have also uploaded the sketch here that shows the connections I made so far. My FONA module is attached to a laptop by USB.
Any help in moving forward is appreciated. Thanks.
