[development tutorial 10] crazy shell · open source Bluetooth heart rate waterproof sports Bracelet - Bluetooth ble transceiver

Open source Bluetooth heart rate waterproof SPORTS BRACELET
—— Crazy shell · Intelligent wearable development series
bluetooth BLE Send and receive    
    

    1 Related introduction
    
    DA14580 RF module is integrated inside , At the same time, the official also provided a set SDK, It contains the Bluetooth protocol stack . Bluetooth transceiver in this section is provided by modifying the official SDK, Complete the Bluetooth transceiver function . Basic knowledge about Bluetooth , You can refer to the previous Bluetooth foundation .
    2 Hardware design
    
    DA14580 RF module is integrated inside , It's just from PF10p Pin connected to an antenna .
    
    
    chart 1
    3 software design
    
    open SDK, From the path :
    
    SDK5.0.4\DA1458x_SDK\5.0.4\project\target_apps\ble_examples\ble_app_profi le\Keil_5 Open in ble_app_profile Engineering documents .
    
    
    The first change user_cust1_def.h file , This file declares the parameters of the service , We need to modify the service and eigenvalue UUID Equal parameter , And delete the redundant eigenvalues .

 

    
    chart 2
    Revise user_cust1_def.c file , This file defines the attributes of files and eigenvalues , Here, you need to modify the services and characteristic values to be used , And delete redundant eigenvalue definitions .
 
    
    chart 3
    
    
    
    Code 1
    The last thing to be revised is cust1_task.c file , This document defines cust1 Some task functions of the service , It needs to be defined as 128 Bit is modified to 16 position . in addition , Because redundant eigenvalue services have been deleted , You also need to modify the acceptance function .

    
    chart 4
    Relevant code can see our experimental routine .
    
    4 Experimental phenomena
    
    Start by opening SmartSnippets.

    
    chart 5
    Set it up SmartSnippets after , Click on the image above Open.
 
    
    chart 6
    （1） Click on Connect, Connect our MCU .
    
    （2） Click on Erase, erase Flash.
    
    （3） Click on Browse, Find our project .hex file .
    
    （4） Click on Burn, Complete the code download .
    
    After downloading the code , Run code , Then turn on the Wolverine BLE.
    
    （1） Click on Connect.
 
    
    chart 7
  
    （2） Choose our Bluetooth device DIALOG-PRFL.
 
    
    chart 8
    （3） Type... In the input box BLE, And then click Send.
 
    
    chart 9
    Complete the above 3 Step , The mobile phone can receive the characters we sent .
    
    
    chart 10
    
 

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