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Trace: • Programming in Assembler Laboratory • Programming in Assembler Laboratory • Laboratory on GPIO use in Zephyr OS • Fan and Servo controlling • STM32 Control of built-in LEDs with PWM • IoT Networks: Laboratory 3 - CoAP • ESP32 BLE in Arduino. Part2: Setting-up BLE Server • Laboratory on the Internet of Things - Advanced IoT Hardware - on-site edition • Zephyr BLE peripheral • Bluetooth Low Energy for STM32 - peripheral write
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en:edu:zmitac:s2:aih:lab:nrf52zephyrblecentral

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en:edu:zmitac:s2:aih:lab:nrf52zephyrblecentral [2023/12/19 22:27] – [Scanning the neighbourhood] ktokarzen:edu:zmitac:s2:aih:lab:nrf52zephyrblecentral [2023/12/19 23:19] (current) – [Tasks to do during the laboratory] ktokarz
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 BLE client must be configured to connect to the peripheral which exposes some specific service and characteristic. To do the lab exercise there is a need to create the peripheral device first. BLE client must be configured to connect to the peripheral which exposes some specific service and characteristic. To do the lab exercise there is a need to create the peripheral device first.
 ===== BLE Health Temperature peripheral ===== ===== BLE Health Temperature peripheral =====
-The default Health Temperature example is sufficient to make the laboratory. How to import the project, flash, and execute is shown in {{en:edu:zmitac:s2:aih:lab:nrf52zephyrbleperipheral}}.+The default Health Temperature example is sufficient to make the laboratory. How to import the project, flash, and execute is shown in {{https://dokuwiki.zmitac.aei.polsl.pl/en:edu:zmitac:s2:aih:lab:nrf52zephyrbleperipheral|peripheral example}}.
 ===== BLE central ==== ===== BLE central ====
 Among the examples provided with Zephyr OS, there is also one complementary to the Health Temperature peripheral. It is named central_ht ((..\.platformio\packages\framework-zephyr\samples\bluetooth\central_ht)). The program is quite complex, here we will explain the most important elements and the process of establishing the connection.\\ Among the examples provided with Zephyr OS, there is also one complementary to the Health Temperature peripheral. It is named central_ht ((..\.platformio\packages\framework-zephyr\samples\bluetooth\central_ht)). The program is quite complex, here we will explain the most important elements and the process of establishing the connection.\\
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 Notice that after every successful discovery the function "discovery_func()" is called as the callback.\\ Notice that after every successful discovery the function "discovery_func()" is called as the callback.\\
 While the peripheral device updates the thermometer sensor reading, our central device receives this data and calls the "notify_func()" callback which prints the data using the UART port. While the peripheral device updates the thermometer sensor reading, our central device receives this data and calls the "notify_func()" callback which prints the data using the UART port.
 +===== Tasks to do during the laboratory =====
 +  - Create the Health Thermometer peripheral device and test if it operates properly
 +  - Import central device program "central_ht" (main.c and prj.conf files must be imported)
 +  - Compile and execute it observing its behaviour with and without peripheral running
 +  - Modify the peripheral code and central code to enable LED control on the central board with a button press on the peripheral board
  
 +<note>
 +If you find problems with undefined BT_ATT_FIRST_ATTRIBUTE_HANDLE and BT_ATT_LAST_ATTRIBUTE_HANDLE define them as in the following code.
 +</note>
 +<code>
 +#define BT_ATT_FIRST_ATTRIBUTE_HANDLE 0x0001
 +#define BT_ATT_LAST_ATTRIBUTE_HANDLE 0xFFFF
 +</code>
 +<note>
 +To send simple binary data you can use a binary sensor service (UUID = 0x183B) with a binary sensor response characteristic (UUID = 0x2B2C).
 +</note>
en/edu/zmitac/s2/aih/lab/nrf52zephyrblecentral.1703021271.txt.gz · Last modified: by ktokarz