lteiot7  2.1.0.0
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LTE IoT 7 click

LTE IoT 7 Click is an add-on board representing a secure-cloud multi-band solution designed for IoT applications. This board features the SARA-R422M8S, a multi-band LTE-M/NB-IoT/EGPRS multi-mode solution with integrated high-performance standard precision M8 GNSS receiver for global position acquisition from u-blox. Equipped with familiar AT commands set over the UART interface, USB interface, and Network and Status indicators, it also provides over-the-air firmware updates, end-to-end trusted domain security, and u-Blox’s leading GNSS technology.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Aug 2022.
  • Type : UART type

Software Support

We provide a library for the LTE IoT 7 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for LTE IoT 7 Click driver.

Standard key functions :

Example key functions :

  • lteiot7_set_sim_apn This function sets APN for sim card.
    void lteiot7_set_sim_apn ( lteiot7_t *ctx, char *sim_apn );
  • lteiot7_send_sms_text This function sends text message to a phone number.
    void lteiot7_send_sms_text ( lteiot7_t *ctx, char *phone_number, char *sms_text );
  • lteiot7_parse_gpgga This function parses the GPGGA data from the read response buffer.
    err_t lteiot7_parse_gpgga ( char *rsp_buf, uint8_t gpgga_element, char *element_data );

Example Description

Application example shows device capability of connecting to the network and sending SMS or TCP/UDP messages, or retrieving data from GNSS using standard "AT" commands.

The demo application is composed of two sections :

Application Init

Initializes the driver, reboots the module which takes about 20 seconds and then tests the communication.

void application_init ( void )
{
log_cfg_t log_cfg;
lteiot7_cfg_t lteiot7_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
lteiot7_cfg_setup( &lteiot7_cfg );
LTEIOT7_MAP_MIKROBUS( lteiot7_cfg, MIKROBUS_1 );
if ( UART_ERROR == lteiot7_init( &lteiot7, &lteiot7_cfg ) )
{
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
lteiot7_process( );
lteiot7_clear_app_buf( );
app_buf_len = 0;
app_buf_cnt = 0;
// Check communication
error_flag = lteiot7_rsp_check( );
lteiot7_error_check( error_flag );
log_info( &logger, " Application Task " );
}

Application Task

Application task is split in few stages:

  • LTEIOT7_CONFIGURE_FOR_NETWORK:

    Sets configuration to device to be able to connect to the network. (used only for SMS or TCP/UDP demo examples).

  • LTEIOT7_WAIT_FOR_CONNECTION:

    Waits for the network registration indicated via CREG URC event and then checks the connection status (used only for SMS or TCP/UDP demo examples).

  • LTEIOT7_CONFIGURE_FOR_EXAMPLE:

    Sets the device configuration for sending SMS or TCP/UDP messages or for retrieving data from GNSS depending on the selected demo example.

  • LTEIOT7_EXAMPLE:

    Depending on the selected demo example, it sends an SMS message (in PDU or TXT mode) or TCP/UDP message or waits for the GPS fix to retrieve location info from GNSS. By default, the TCP/UDP example is selected.

void application_task ( void )
{
switch ( example_state )
{
{
if ( LTEIOT7_OK == lteiot7_configure_for_network( ) )
{
example_state = LTEIOT7_WAIT_FOR_CONNECTION;
}
break;
}
{
if ( LTEIOT7_OK == lteiot7_check_connection( ) )
{
}
break;
}
{
if ( LTEIOT7_OK == lteiot7_configure_for_example( ) )
{
example_state = LTEIOT7_EXAMPLE;
}
break;
}
{
lteiot7_example( );
break;
}
default:
{
log_error( &logger, " Example state." );
break;
}
}
}

Note

In order for the examples to work (except GNSS example), user needs to set the APN and SMSC (SMS PDU mode only)

of entered SIM card as well as the phone number (SMS mode only) to which he wants to send an SMS. Enter valid values for the following macros: SIM_APN, SIM_SMSC and PHONE_NUMBER_TO_MESSAGE.

Example:

  • SIM_APN "internet"
  • SIM_SMSC "+381610401"
  • PHONE_NUMBER_TO_MESSAGE "+381659999999"

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.LTEIoT7

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


LTEIOT7_CONFIGURE_FOR_EXAMPLE
@ LTEIOT7_CONFIGURE_FOR_EXAMPLE
Definition: main.c:95
LTEIOT7_EXAMPLE
@ LTEIOT7_EXAMPLE
Definition: main.c:96
lteiot7_cfg_setup
void lteiot7_cfg_setup(lteiot7_cfg_t *cfg)
LTE IoT 7 configuration object setup function.
lteiot7_parse_gpgga
err_t lteiot7_parse_gpgga(char *rsp_buf, uint8_t gpgga_element, char *element_data)
LTE IoT 7 parse GPGGA function.
LTEIOT7_POWER_STATE_REBOOT
#define LTEIOT7_POWER_STATE_REBOOT
Definition: lteiot7.h:106
LTEIOT7_WAIT_FOR_CONNECTION
@ LTEIOT7_WAIT_FOR_CONNECTION
Definition: main.c:94
application_task
void application_task(void)
Definition: main.c:244
LTEIOT7_CONFIGURE_FOR_NETWORK
@ LTEIOT7_CONFIGURE_FOR_NETWORK
Definition: main.c:93
lteiot7_set_sim_apn
void lteiot7_set_sim_apn(lteiot7_t *ctx, char *sim_apn)
Set sim card APN.
LTEIOT7_CMD_AT
#define LTEIOT7_CMD_AT
LTE IoT 7 control commands.
Definition: lteiot7.h:69
LTEIOT7_MAP_MIKROBUS
#define LTEIOT7_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: lteiot7.h:159
lteiot7_t
LTE IoT 7 Click context object.
Definition: lteiot7.h:176
lteiot7_cfg_t
LTE IoT 7 Click configuration object.
Definition: lteiot7.h:200
lteiot7_send_cmd
void lteiot7_send_cmd(lteiot7_t *ctx, char *cmd)
Send command function.
lteiot7_send_sms_text
void lteiot7_send_sms_text(lteiot7_t *ctx, char *phone_number, char *sms_text)
LTE IoT 7 send SMS in text mode.
LTEIOT7_OK
@ LTEIOT7_OK
Definition: lteiot7.h:227
application_init
void application_init(void)
Definition: main.c:200
lteiot7_set_power_state
void lteiot7_set_power_state(lteiot7_t *ctx, uint8_t state)
LTE IoT 7 set power state function.
lteiot7_init
err_t lteiot7_init(lteiot7_t *ctx, lteiot7_cfg_t *cfg)
LTE IoT 7 initialization function.