Mikroelektronika d.o.o.
Tableau à clic RN4871
Tableau à clic RN4871
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La carte Click Board™ RN4871 intègre le module basse consommation Bluetooth® 4.2 RN4871 de Microchip.
Le Click Board™ est conçu pour fonctionner sur une alimentation de 3,3 V. Il utilise l'interface de commande ASCII sur UART pour la communication avec le microcontrôleur cible, avec des fonctionnalités supplémentaires fournies par les broches suivantes sur la ligne mikroBUS™ : RST, CS et INT.
RN4871 MODULE FEATURES
The RN4871 Bluetooth Low Energy module integrate Bluetooth 4.2 baseband controller, on-board Bluetooth stack, digital and analog I/O, and RF power amplifier into one solution.
The module contains an integral ceramic chip antenna.
All products in the RN series can be dynamically configured by the host microcontroller with a few simple ASCII commands.
The RN4871 Click Board™ supports both peripheral and central Generic Access Profile (GAP) roles, actively scanning for other connectable devices instead of waiting for incoming connection requests. The peripherals are usually small, low-power devices like sensors and monitors, that broadcast information to the central device. The central device can communicate with multiple peripherals.
RN4871 Click Board™ Features
SPECIFICATIONS
| Type | BT/BLE |
| Applications | Health/Medical Devices, Sports Activity/Fitness Meters, Beacon Applications, Internet of Things (IoT) Sensor Tag, Remote Control, Wearable Smart Devices and Accessories, Smart Energy/Smart Home, Industrial Control |
| On-board modules | RN4871 Bluetooth module from Microchip |
| Key Features | Low energy module |
| Interface | GPIO,UART |
| Compatibility | mikroBUS |
| Click Board™ size | M (42.9 x 25.4 mm) |
| Input Voltage | 3.3V |
PINOUT DIAGRAM
This table shows how the pinout on RN4871 Click Board™ corresponds to the pinout on the mikroBUS socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| Module Reset | RST_N | 2 | RST | INT | 15 | UART_CTS | UART Clear To Send |
| UART Ready To Send | UART_RTS | 3 | CS | TX | 14 | UART_TXD | UART Data output |
| NC | 4 | SCK | RX | 13 | UART_RXD | UART Data input | |
| NC | 5 | MISO | SCL | 12 | NC | ||
| NC | 6 | MOSI | SDA | 11 | NC | ||
| Power supply | +3.3V | 7 | 3.3V | 5V | 10 | NC | |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
MAXIMUM RATINGS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 1.9 | 3.6 | V | |
| Frequency Band | 2.402 | 2.480 | GHz | |
| Operating Temperature Range | -20°C | +70°C | ||
| Sensitivity | 90dBm |
Software Support
Software Support
Code examples for the RN4871 Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
CODE SNIPPET
The following code snippet shows send function for RN4xxx Click Board™s. If the message type is correct, it will establish connection with the device specified by the address in the parameter and then send the properly formatted data.
01 #define BTCMD( TXT ) UART2_Write_Text( TXT )
02 void RN4xxx_send(char *pAddr, T_RN4xxx_message msgData )
03 {
04 static char msgTxt [255];
05
06 if (msgData.msgType == 'Q')
07 {
08 /*Connects to a device with specified adress*/
09 BTCMD("C,1,");
10 BTCMD (pAddr);
11 BTCMD("r");
12 Delay_ms(3000);
13 /*Secures the connection, entering data stream mode*/
14 BTCMD("Br");
15 Delay_ms(3000);
16 }
17 /*Sentence construction */
18 msgTxt[0] = '#';
19 msgTxt[1] = msgData.msgType;
20 msgTxt[2] = ',';
21 msgTxt[3] = msgData.dataType/0x100;
22 msgTxt[4] = msgData.dataType%0x100;
23 msgTxt[5] = ',';
24 msgTxt[6] = msgData.id;
25 msgTxt[7] = ',';
26 msgTxt[8] = '';
27 strcat (msgTxt, msgData.payload);
28 strcat (msgTxt, "*rn");
29
30 BTCMD ( msgTxt );
31
32 if (msgData.msgType == 'Q')
33 {
34 Delay_ms(3000);
35 /*Enters CMD mode*/
36 BTCMD("$");
37 Delay_ms(100);
38 BTCMD("$$$");
39 Delay_ms(1000);
40 /*Kills connection*/
41 BTCMD("K,1r");
42 Delay_ms(500);
43 }
44 }
Tableau à clic RN4871
Frequently Asked Questions
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