cristiansteib / sim800l

Library sim800l for Arduino UNO (maybe sim900l work)

Library SIM800l Module for Arduino UNO

The Purpose of This library is to use the module in the most easy way and transparent.
Website: Sim800l library

Download and Install.

Go to Releases click the " Source Code (zip) " button, then rename the uncompressed folder to Sim800l. Check that the Sim800l folder contains Sim800l.cpp and Sim800l.h

Go to arduino IDE Sketch >> Import Library >> add library... Select the folder Sim800l

OR

Place the Sim800l library folder your arduinosketchfolder/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE.

Connections & pinouts

Arduino Uno	Sim800l	Notes
+5v	(3.8v)~(4.4v)!	Power supply input
10 RX_PIN	TX
11 TX_PIN	RX
2 RESET_PIN	RST	Reset Pin
GND	GND

Methods and functions

Name	Return	Notes
begin()	None	Initialize the library
reset()	None	Reset the module,and wait to Sms Ready.
sendSms(number,text)	true or false	parameters must be Strings.
readSms(index)	String	index is the position of the sms in the prefered memory storage
getNumberSms(index)	String	returns the number of the sms.
delAllSms()	true or false	Delete all sms
answerCall()	true or false
callNumber(number)	None
hangoffCall()	true or false
getCallStatus()	uint8_t	Return the call status, 0=ready,2=Unknown(),3=Ringing,4=Call in progress
setPhoneFunctionality()	None	Set at to full functionality
activateBearerProfile()	None
deactivateBearerProfile()	None
RTCtime(int *day,int *month, int *year,int *hour,int *minute, int *second)	None	Parameters must be reference ex: &day
dateNet()	String	Return date time GSM
updateRtc(utc)	true or false	Return if the rtc was update with date time GSM.

---

You can regulate the voltage to the desired with this, is not the best, but for start it's easy.

For the reset pin they need NPN transistor, this is an example circuit that you can use.

sim800l's Issues

Not compile

In file included from C:\Users\ANURAG\Documents\Arduino\libraries\Sim800l-master\examples\sendSms\sendSms.ino:32:0:

C:\Users\ANURAG\Documents\Arduino\libraries\Sim800l-master/Sim800l.h:33:28: fatal error: SoftwareSerial.h: No such file or directory

compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Uno.

Using HardwareSerial

SIM800L module and it run perfectly fine with SoftwareSerial. I need to expand I/O so I need to use HardwareSerial. Please teach me how to use HardwareSerial for this module.
Thank you so much.

Compatible with Sim800A?

Is this library compatible with the SIM800A? I wanted to recommend this library to a friend and I'm unable to test it on it.

GPS neo-6m+GSM Sim800l library

GPS neo-6m+GSM Sim800l sketch code for arduino can it working together?
Thank you
Stefano

callNumber()

Function callNumber didn't work.
My solution is add semicolon after the called number or better edit cpp file and add semicolon directly into method declaration before \r\n.

void Sim800l::callNumber (char* number){ SIM.print (F("ATD ")); SIM.print (number); SIM.print (F(";\r\n")); }

Return USSD code result by sending SMS

How to check credit balance by sending SMS in the Sim800l library for SIM800L?
There is a command line for checking and response the AT commands?

Decoding DTMF if tones is not hearable

Hi everyone,
It's not an issue for SIM800L itself. I'm going to buy it as soon as being sure that it will work.

I also will use DTMF decoder module with GSM phone (AT commands support), Before getting started I tested a normal call to check if DTMF tones will be received between the 2 parties but I couldn't hear any tones or keypad pressing and tested with many phones smart and old.

I read many from google and couldn't understand well about in-band signals and DTMF improvements history.

Can SIM800L/DTMF modules decode incoming signals through that different channel? Or it means any DTMF project can't be done at all even using Sim800L or any else? Is this forbidden only in my country's mobile operators so?

I was working as Call center representative and remember there were some calls I received and I asked the customer to lock his screen because I heard annoying dial pad tones and this happened too while a normal call with a friend about one year ago.

I also done this below with a lot of confusions:

1. I tried to call from mobile to a landline and DTMF worked well in landline but also not with all mobiles.
2. Tried many troubleshooting like in/decreasing volume and check after reading this article also I checked this and this.
3. Tried to disable dial pad tones in android and calling any IVR service and It still work with no Issues.
4. Tried to call cross net or on net mobile numbers and there is no new.
5. Tried to enable DTMF detection on GSM phone using AT+VTD? but it returns ERROR as same as SIM900's AT command AT+DDET.

Thanks in advance.

Delete SMS Messages Not working on SIM800L module

Hi.
The Delete SMS command doesn't seem to work with my SIM800L module. If you dig into the library code, the AT command used always returns an error on this module. I've got around the issue by looking at the AT+ command standards, and discovered that the following command deletes all messages, resetting the memory index back to 1, on the SIM880L.

"AT+CMGD=1,4\r"

(The ',4' in the above command instructs the modem to ignore the index given (ie. 1) and delete ALL messages from memory.)

Hope this helps others with the same issue.

readSms return missing the sms content

i tried your example code for readSms.
it did return sms received in serial monitor but the content of the sms is missing.
what went wrong? i did not alter any of the code in your readSms example.
Pls help

DTMF

Detection of DTMF tones in my SIM800L module.

I get "OK" when I send 'AT+DDET=1,1000,1,1* ' over uart .
But it doesnt seem to detect anything afterwards.
Perhaps I am doing something wrong.
Would be great to get some feedback.

regards
Atul
ref : *SIM800 Series_AT Command Manual_V1.09

Issue in sending sms

For who that have problem sending SMS, you can add the following line before calling sendSms method:

GSM.write("AT+CSMP=17,167,2,25\r");
delay(100);
// ... sendSms(...)

SIM800L not responding

I have made the conection between Arduino and the SIM800L and programmed it, The problem is that the SIM800L does not respond to any commands, It turns on and the green LED remains ON all the time while the red LED flashes every 5 seconds.

APN with user and password

Are you planning to add use and password to APN settings?

readSMS Not working... "'uint8_t index' redeclared as different kind of symbol"

When I try and run readSMS, I am returned with "'uint8_t index' redeclared as different kind of symbol"

//

Arduino: 1.6.9 (Mac OS X), Board: "NodeMCU 1.0 (ESP-12E Module), 160 MHz, 115200, 4M (3M SPIFFS)"

/Applications/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware "/Applications/Arduino.app/Contents/Java/hardware" -hardware "/Users/paulpenney/Library/Arduino15/packages" -tools "/Applications/Arduino.app/Contents/Java/tools-builder" -tools "/Applications/Arduino.app/Contents/Java/hardware/tools/avr" -tools "/Users/paulpenney/Library/Arduino15/packages" -built-in-libraries "/Applications/Arduino.app/Contents/Java/libraries" -libraries "/Users/paulpenney/Documents/Arduino/libraries" -fqbn=esp8266:esp8266:nodemcuv2:CpuFrequency=160,UploadSpeed=115200,FlashSize=4M3M -ide-version=10609 -build-path "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp" -warnings=none -prefs=build.warn_data_percentage=75 -verbose "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/arduino_modified_sketch_910342/readSms.ino"
/Applications/Arduino.app/Contents/Java/arduino-builder -compile -logger=machine -hardware "/Applications/Arduino.app/Contents/Java/hardware" -hardware "/Users/paulpenney/Library/Arduino15/packages" -tools "/Applications/Arduino.app/Contents/Java/tools-builder" -tools "/Applications/Arduino.app/Contents/Java/hardware/tools/avr" -tools "/Users/paulpenney/Library/Arduino15/packages" -built-in-libraries "/Applications/Arduino.app/Contents/Java/libraries" -libraries "/Users/paulpenney/Documents/Arduino/libraries" -fqbn=esp8266:esp8266:nodemcuv2:CpuFrequency=160,UploadSpeed=115200,FlashSize=4M3M -ide-version=10609 -build-path "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp" -warnings=none -prefs=build.warn_data_percentage=75 -verbose "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/arduino_modified_sketch_910342/readSms.ino"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp" -o "/dev/null"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp" -o "/dev/null"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial" "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp" -o "/dev/null"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial" "/Users/paulpenney/Documents/Arduino/libraries/Sim800l/Sim800l.cpp" -o "/dev/null"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial/SoftwareSerial.cpp" -o "/dev/null"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial" "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp" -o "/dev/null"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial" "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp" -o "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/preproc/ctags_target_for_gcc_minus_e.cpp"
"/Applications/Arduino.app/Contents/Java/tools-builder/ctags/5.8-arduino10/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/preproc/ctags_target_for_gcc_minus_e.cpp"
"/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/include" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/lwip/include" "-I/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -MMD -ffunction-sections -fdata-sections -DF_CPU=160000000L -DLWIP_OPEN_SRC -DARDUINO=10609 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/variants/nodemcu" "-I/Users/paulpenney/Documents/Arduino/libraries/Sim800l" "-I/Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial" "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp" -o "/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp.o"
readSms:36: error: 'uint8_t index' redeclared as different kind of symbol
uint8_t index; // to indicate the message to read.
^
In file included from /Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/xtensa-lx106-elf/include/stdlib.h:11:0,
from /Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266/Arduino.h:27,
from /var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/build06e5add411000dfcbd3a1189688005ff.tmp/sketch/readSms.ino.cpp:1:
/Users/paulpenney/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/xtensa-lx106-elf/include/string.h:55:8: error: previous declaration of 'char* index(const char_, int)'
char *EXFUN(index,(const char *, int));
^
/var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/arduino_modified_sketch_910342/readSms.ino: In function 'void setup()':
readSms:43: error: invalid conversion from 'char ()(const char, int)' to 'uint8_t {aka unsigned char}' [-fpermissive]
text=Sim800l.readSms(index);
^
In file included from /var/folders/7m/6kjjn06d4bq5s_fw_g38shhc0000gp/T/arduino_modified_sketch_910342/readSms.ino:32:0:
/Users/paulpenney/Documents/Arduino/libraries/Sim800l/Sim800l.h:70:9: error: initializing argument 1 of 'String Sim800l::readSms(uint8_t)' [-fpermissive]
String readSms(uint8_t index); //return all the content of sms
^
Using library Sim800l in folder: /Users/paulpenney/Documents/Arduino/libraries/Sim800l (legacy)
Using library SoftwareSerial at version 1.0 in folder: /Users/paulpenney/Library/Arduino15/packages/esp8266/hardware/esp8266/2.3.0/libraries/SoftwareSerial
exit status 1
'uint8_t index' redeclared as different kind of symbol

//

_readSerial problem

Hello,
i have a project "Wireless Sensor Network" and i need to do some operations with SIM800L, the problem is that i am using RF24 radio transceiver, and it uses 2,7,8,11,12,13 digital pins, but i opened the library and i've changed the RX and TX pins for free Arduino pins. When i'm connecting the SIM800 platform with no other periferals, it works great, but in my project I figured that the problem is in the _readSerial method. I don't know what is the problem, but actually the method SIM.available() is always 0.
And the methods without reading the buffer are working with no problem (like callNumber()).
How can i solve this problem. Thanks.

Request for Signal Quality and Operator Name

Hi my friend, thanks for this awesome library. Can you add signal quality (int) and operator name in this library.
Thanks.

Mms

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Not sending SMS while moving

Hi I am having a problem where I can send a SMS to the device and have it send me another SMS back. This works fine while stationary(takes about 10-30 seconds to get a reply). But when I put it in my car and start driving and then send it a SMS to respond to, it doesn't send a reply right away, it takes about 2-10 minutes to reply to a single text. If I send it 2 in a row while moving it seems to reply within the normal 10-30 seconds but it only replies once, not twice (as I sent 2 text messages)
Do you have any idea why this is happening? I have tested this on 3 other modules and I am having the save problem.

P.S I am not using the reset pin, but this shouldn't have anything to do with it, should it?

Unicode problem

In my country, sms is set to Unicode UTF-8 by default, when I sent a sms to my sim800l, the textSms is showed in HEX code, please support UTF-8 in your library, thanks!