![]() ![]() Once a connection is established with the slave, the secure_hub performs a GATT Discovery of the slave using the custom UUIDs of hello_service. ![]() The UUID of the service available in the hello_sensor node is verified in the callback, after which the connection is initiated by the secure_hub. A Scan is initiated via GPIO Interrupt button press on the secure_hub device. The hello_sensor project starts advertising, once these details are entered. The 4 security levels supported in this project are In the secure_hub and the hello_sensor projects, the user needs to enter the desired security level and IO Capabilities via console. The Timer and GPIO Button Press Interrupt callbacks increment the suffix in the Device Name by 1 and then continues the advertisement with the incremented name. The Timer and GPIO Interrupts are registered. Upon the reception of this event, we start the Non Connectable High Duty Cycle advertisement. The BTM_ENABLED_EVT indicates that the Bluetooth stack is ready. The BT Stack and the corresponding management callback are started using the wiced_bt_stack_init () API.ĭb_management_cback () function in secure_hub.c handles the events generated for the BLE Stack. Here the peripheral UART is set for displaying Debug Messages. All the CYW920706 devices will be able to communicate with the PC via PUART interfaces that appear as serial terminal COM Ports in the PC.ĪPPLICATION_START is the program entry point. ![]() It in turn serves as a slave for a master device. Related Hardware: CYW920706WCDEVAL Board (2 to 4 required)Īs shown in the abobe block diagram, the Secure Hub can connect with upto 3 slave devices (programmed with hello_sensor project). Tool: WICED Studio 5.1 and above, Any BLE Central (Example: CySmart Mobile Application), Serial Terminal (Example: TeraTerm, CoolTerm) In addition, the device will also be able to pair with a Master, to which it can send the data collected from the slaves or distribute the data from the master to the slaves. This project instantiates a data hub that plays the roles of GAP Central, GAP Peripheral, GATT Client and GATT Server at the same time, and that is able to pair with up to 3 slaves at different security levels. #include "mbed.h"īy default, the C stdin, stdout and stderr file handles map to the PC serial connection: #include "mbed.This example demonstrates the implementation of different security levels of pairing and the data transfer in a multi-connection environment. Tie pins together to see characters echoed back. Pc.printf("Press U to turn LED1 brightness up, D to turn it down\n") The pin map of the NUCLEO-F401RE shows LED1 on the Pwm pin. Note: This example only works if LED1 is on the Pwm pin of the board you are using, such as the NUCLEO-F401RE. Use the U and D keys to make LED1 brighter or dimmer Pc.printf("Echoes back to the screen anything you type\n") Echo back characters you type #include "mbed.h" If you're not sure how to build these examples and run them on your board, please see our build tools section. Use your terminal application to interact with the following examples. If for some reason it doesn't, you can try one of the following:įor low memory devices you may optionally use the ArmMbed minimal printf library. Using terminal applications on LinuxĬoolTerm should work under Linux. Your terminal program is now configured and connected. If you do not see your board, click Re-Scan Peripherals.You should see 9600 baud, 8 bits, 1 stop bit, no parity (9600-8-N-1).If you have more than one board plugged in, you may need to change the port under Options > Serial Port > Port. This opens up an 8-n-1 9600 baud connection to the first available serial port. Some Windows PCs come with Hyperterminal installed.We use it often because it usually "just works". CoolTerm - this is the application we use in this example.There are many terminal applications for Windows, including: Serial configuration: The standard setup for the USB serial port is 9600 baud, 8 bits, 1 stop bit, no parity (9600-8-N-1) Installing an application for Windows They provide a window where your Mbed board can print and where you can type characters back to your board. Terminal applications run on your host PC. Specify the internal (USBTX, USBRX) pins to connect to the serial port routed over USB: #include "mbed.h" Communication over the USB serial port uses the standard serial interface. This program prints a "Hello World" message that you can view on a terminal application. Communicate with applications and programming languages running on the host PC that can communicate with a serial port.Print out messages to a host PC terminal (useful for debugging).If you're working on Windows earlier than Windows 10, you might need to install a serial driver. The Arm Mbed microcontroller on your board can communicate with a host PC over the same USB cable that you use for programming. Board to PC communication over USB Board to PC communication over USB ![]()
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