SIMCom SIM7000 module
Introduction
The SIMCom SIM7000 Tri-Band LTE-FDD and Dual-Band GPRS/EDGE module solution in a SMT type which supports LTE CAT-M1(eMTC) and NB-IoT up to 375kbps data transfer.
There are breakouts of several variants made by AND Technologies or Botletics.
Connecting a SIM7000 to a Mayfly
To my knowledge, there are not any SIM7000 modules available that can directly connect to a Mayfly.
Manufacturer Documentation
The module datasheet and AT commands are available here: https:/
Modem Constructor
Construct a new SIMComSIM7000 object The constuctor initializes all of the provided member variables, constructs a loggerModem parent class with the appropriate timing for the module, calls the constructor for a TinyGSM modem on the provided modemStream, and creates a TinyGSM Client linked to the modem. Should be set to a negative number if the modem should be continuously powered or the power cannot be controlled by the MCU. Should be set to a negative number if the modem status pin cannot be read. This is the pin labeled Should be set to a negative number if the modem reset pin is not connected to the MCU. This is the pin labeled Should be set to a negative number if there is no pin usable for deep sleep modes or it is not accessible to the MCU. This is the pin labeled
SIMComSIM7000(Stream* modemStream,
int8_t powerPin,
int8_t statusPin,
int8_t modemResetPin,
int8_t modemSleepRqPin,
const char* apn)
Parameters
modemStream
The Arduino stream instance for serial communication.
powerPin
The digital pin number of the mcu pin controlling power to the modem (active
HIGH
).
statusPin
The digital pin number of the mcu pin connected to the modem status output pin.
modemResetPin
The digital pin number of the pin on the mcu attached the the hard or panic reset pin of the modem.
modemSleepRqPin
The digital pin number of a pin on the mcu used to request the modem enter its lowest possible power state.
apn
The Access Point Name (APN) for the SIM card.
STATUS
in SIMCom's integration guide.RESET
in SIMCom's integration guide.PWRKEY
in SIMCom's integration guide.
Example Code
The SIM7000 is used in the menu a la carte example.
// For almost anything based on the SIMCom SIM7000 #include <modems/SIMComSIM7000.h> // NOTE: Extra hardware and software serial ports are created in the "Settings // for Additional Serial Ports" section const int32_t modemBaud = 9600; // SIM7000 does auto-bauding by default // Modem Pins - Describe the physical pin connection of your modem to your board // NOTE: Use -1 for pins that do not apply const int8_t modemVccPin = 18; // MCU pin controlling modem power const int8_t modemStatusPin = 19; // MCU pin used to read modem status const int8_t modemResetPin = A5; // MCU pin connected to modem reset pin const int8_t modemSleepRqPin = 23; // MCU pin for modem sleep/wake request const int8_t modemLEDPin = redLED; // MCU pin connected an LED to show modem // status // Network connection information const char* apn = "xxxxx"; // APN for GPRS connection // Create the modem object SIMComSIM7000 modem7000(&modemSerial, modemVccPin, modemStatusPin, modemResetPin, modemSleepRqPin, apn); // Create an extra reference to the modem by a generic name SIMComSIM7000 modem = modem7000;
Classes
- class SIMComSIM7000
- The loggerModem subclass for Botletics, And1, and other modules based on the SIMCOM SIM7000.
Defines
- #define TINY_GSM_MODEM_SIM7000
- The modem type for the underlying TinyGSM library.
- #define SIM7000_STATUS_LEVEL = HIGH
- The loggerModem::
_statusLevel. Status of the SIM7000 should be monitored on the
STATUS
pin, which is at a high level when the module has powered on and the firmware goes ready.Time after end pulse until status pin becomes active is >4.5sec.
- #define SIM7000_STATUS_TIME_MS = 5000L
- The loggerModem::
_statusTime_ms. Status of the SIM7000 should be monitored on the
STATUS
pin, which is at a high level when the module has powered on and the firmware goes ready.Time after end pulse until status pin becomes active is >4.5sec.
- #define SIM7000_RESET_LEVEL = LOW
- The loggerModem::
_resetLevel. The active low level time impulse on
RESET
pin to reset SIM7000 is miniumum 252ms.- #define SIM7000_RESET_PULSE_MS = 300
- The loggerModem::
_resetPulse_ms. The active low level time impulse on
RESET
pin to reset SIM7000 is miniumum 252ms.- #define SIM7000_WAKE_LEVEL = LOW
- The loggerModem::
_wakeLevel. The SIM7000 Module is switched on by a >1 second
LOW
pulse on thePWRKEY
pin.- #define SIM7000_WAKE_PULSE_MS = 1100
- The loggerModem::
_wakePulse_ms. The SIM7000 Module is switched on by a >1 second
LOW
pulse on thePWRKEY
pin.- #define SIM7000_WAKE_DELAY_MS = 1000L
- The loggerModem::
_wakeDelayTime_ms. Time after power on before
PWRKEY
on SIM7000 can be used is undocumented. Using 1s.- #define SIM7000_ATRESPONSE_TIME_MS = 4500
- The loggerModem::
_max_atresponse_time_ms. Time after end pulse until serial port on SIM7000 becomes active is >4.5sec.
- #define SIM7000_DISCONNECT_TIME_MS = 7000L
- The loggerModem::
_disconnetTime_ms. SIM7000 power down (gracefully) takes 1.8-6.9 sec.