Skywire click
PID: MIKROE-2405
Weight: 30 g
Condition: New product
Skywire™ click is
an adapter click, which hosts NimbeLink/Skywire™ cellular modems (using
stacking headers) to MikroElektronika development boards. It carries the MCP1826 low dropout
regulator from Microchip.
NOTE:
the Skywire™ modem and the Thermo 3 click are not included in this offer.
Table of contents
1. Additional mikroBUS™ socket
2. Skywire cellular modems
3. Key features
Skywire™ click
is an adapter click, 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 are not included in this offer.
Additional mikroBUS™ socket
Skywire™ click 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.
Key features
MCP1826 LDO regulator
o
1000 mA Output Current Capability
o
Output voltage range of 0.8V to 5.0V
Additional socket for a mini sized click board™
Interface: UART
3.3V or 5V power supply
SPECIFICATION
Product Type
On-board
modules
Key Features
Adapter
MCP1826 LDO regulator
Additional socket for mini sized click board™, MCP1826 LDO regulator,
3.3V or 5V power supply
Adapts Nimbelink/Skywire modules with MikroElektronika development
Key Benefits
systems
Interface
UART
Power Supply
3.3V or 5V
Compatibility
mikroBUS
Click board size L (57.15 x 25.4 mm)
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
mikroBUS
tm
Pin
Notes
Enable
EN 1
AN
RESET
RST 2
RST
Request To Send
RTS 3
CS
Not connected NC
4
SCK
PWM
16 CTS
Clear To Send
INT
15 AD1_J
ADC IN
TX
14
RX
13
TX
UART transmit
RX
UART receive
NC Not connected
NC Not connected
Not connected NC
5
MISO SCL
12
Not connected NC
6
MOSI SDA
11
Power supply
+3.3V 7
3.3V
5V
10 +5V
Power supply
Ground
GND 8
GND GND
9 GND
Ground
Programming
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:
}
Jumpers and settings
The following table describes the functions of the onboard jumpers.
Designator Name
Default
Position
Left
Default
Option
3.3V
Description
Power Supply Voltage Selection 3.3V/5V, left position
3.3V, center position 5V
Connects ADC1 pin of the modem to the mikroBUS
pin
JP1
PWR.SEL.
ADC1
ADC1
Populated
3.3V
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