Mikroelektronika d.o.o.
Skywire Click Board
Skywire Click Board
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The SkywireClick Board™ is an adapter, capable of hosting NimbeLink/Skywirecellular modems (using stacking headers) to MikroElektronika development boards. It carries the MCP1826 low dropout regulator from Microchip. The Skywire Click Board™ is designed to run either on 3.3V or 5V power supply. The SkywireClick Board™ communicates with the target MCU over UART interface, and the following MikroBUSpins: PWM, AN, INT, RST, CS.
NOTE: the SkywireModem is not included in this offer.
The Skywire™ Click Board™ is an adapter, which hosts NimbeLink/Skywire™ cellular modems (using stacking headers) to MikroElektronika development boards. It carries the MCP1826 low dropout regulator from Microchip. Skywire™ click is designed to run either on 3.3V or 5V power supply. The click communicates with the target MCU over UART interface, and the following mikroBUS™ pins: PWM, AN, INT, RST, CS.
NOTE: the Skywire™ Modem and the Thermo 3 Click Board™ are not included in this offer.
ADDITIONAL MIKROBUS™ SOCKET
The Skywire™ Click Board™ has the capability to host an additional mini sized click board™. It also has its own power supply to make the needed voltage for the modules.
SKYWIRE CELLULAR MODEMS
Skywire™ cellular modems are the smallest on the market today. This product family from NimbeLink covers everything from 2G and 3G to LTE. They all share the same footprint and pinout, and are flexible for implementation.
SPECIFICATIONS
| Type | Adapter |
| Applications | Developemnt of 2G, 3G or LTE applications by using Skywire cellular modems |
| On-board modules | MCP1826 LDO regulator |
| Key Features | Additional socket for mini sized click board™, MCP1826 LDO regulator, 3.3V or 5V power supply |
| Interface | GPIO,UART |
| Compatibility | mikroBUS |
| Click board size | L (57.15 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout on Skywire click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| Enable | EN | 1 | AN | PWM | 16 | CTS | Clear To Send |
| RESET | RST | 2 | RST | INT | 15 | AD1_J | ADC IN |
| Request To Send | RTS | 3 | CS | TX | 14 | TX | UART transmit |
| NC | 4 | SCK | RX | 13 | RX | UART receive | |
| NC | 5 | MISO | SCL | 12 | NC | ||
| NC | 6 | MOSI | SDA | 11 | NC | ||
| Power supply | +3.3V | 7 | 3.3V | 5V | 10 | +5V | Power supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
JUMPERS AND SETTINGS
The following table describes the functions of the onboard jumpers.
| Designator | Name | Default Position | Default Option | Description |
|---|---|---|---|---|
| JP1 | PWR.SEL. | Left | 3.3V | Power Supply Voltage Selection 3.3V/5V, left position 3.3V, center position 5V |
| ADC1 | ADC1 | Populated | 3.3V | Connects ADC1 pin of the modem to the mikroBUS pin |
Software Support
Code examples for the Skywire™ Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
CODE SNIPPET
The following code snippet starts the main function in the Skywire application.
This is a simple main function, which excepts a call and replies with an SMS to caller. The content of the SMS is the current temperature measurement in degrees Celsius.
01: void main()
02: {
03: measure_f = false;
04: system_init();
05: skywire_power_on();
06: at_init( rsp_handler, UART3_Write, buffer, sizeof( buffer ) );
07: at_cmd_save( "+CLCC", 1000, NULL, NULL, NULL, callerid_handler ); // Assigning caller ID handler
08: at_cmd_single( "AT" );
09: at_cmd_single( "AT+CSCS="GSM"" );
10: at_cmd_single( "AT+CMGF=1" );
11: while( 1 )
12: {
13: at_process();
14:
15: if( measure_f )
16: {
17: measure_temp();
18: at_cmd_single( "AT+CLCC" );
19: at_cmd_single( "ATH" );
20: Delay_ms( 2000 ); // Delay needed after ATH
21: reply_to_caller();
22: measure_f = false;
23: }
24: }
25: }
Software Support
Code examples for the Skywire™ Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
CODE SNIPPET
The following code snippet starts the main function in the Skywire application.
This is a simple main function, which excepts a call and replies with an SMS to caller. The content of the SMS is the current temperature measurement in degrees Celsius.
01: void main()
02: {
03: measure_f = false;
04: system_init();
05: skywire_power_on();
06: at_init( rsp_handler, UART3_Write, buffer, sizeof( buffer ) );
07: at_cmd_save( "+CLCC", 1000, NULL, NULL, NULL, callerid_handler ); // Assigning caller ID handler
08: at_cmd_single( "AT" );
09: at_cmd_single( "AT+CSCS="GSM"" );
10: at_cmd_single( "AT+CMGF=1" );
11: while( 1 )
12: {
13: at_process();
14:
15: if( measure_f )
16: {
17: measure_temp();
18: at_cmd_single( "AT+CLCC" );
19: at_cmd_single( "ATH" );
20: Delay_ms( 2000 ); // Delay needed after ATH
21: reply_to_caller();
22: measure_f = false;
23: }
24: }
25: }
Skywire Click Board
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