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| en:iot-open:practical:hardware:sut:esp32:iot_9 [2024/05/02 11:07] – [Prerequisites] ktokarz | en:iot-open:practical:hardware:sut:esp32:iot_9 [2024/05/04 09:20] (current) – ktokarz | ||
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| ===== Hands-on Lab Scenario ===== | ===== Hands-on Lab Scenario ===== | ||
| - | This scenario is intended to be implemented using two BLE laboratory nodes. One of them is a server, while the second is a client. Here we will present the extension of the scenario implemented in IoT_8. | + | This scenario is intended to be implemented using two BLE laboratory nodes. One of them is a server, while the second is a client. Here we will present the extension of the scenario implemented in [[en: |
| ==== Task to be implemented ==== | ==== Task to be implemented ==== | ||
| **Task 1.** Implement a program that operates as the BLE server which advertises itself and allows us to connect to. After a successful connection, it handles the notify descriptor modification and sends the data automatically if notifications are enabled. | **Task 1.** Implement a program that operates as the BLE server which advertises itself and allows us to connect to. After a successful connection, it handles the notify descriptor modification and sends the data automatically if notifications are enabled. | ||
| Line 18: | Line 18: | ||
| ==== Start ==== | ==== Start ==== | ||
| - | You can use the simple client and server programs from IoT_8 as the starting point. | + | You can use the simple client and server programs from [[en: |
| ==== Steps ==== | ==== Steps ==== | ||
| - | We will pass through the lab in a few steps. We will add the second characteristic to the example from lab IoT_8. We will configure this characteristic as notify/ | + | We will pass through the lab in a few steps. We will add the second characteristic to the example from lab [[en: |
| === Step 1 === | === Step 1 === | ||
| - | We start with the program written during the laboratory IoT_8 by including the BLE2902.h library which handles the Client Characteristic Configuration Descriptor (CCCD). The descriptor of this type is used to enable or disable the notification and indication feature. | + | We start with the program written during the laboratory |
| ^ Descriptor UUID ^ Bits 1 and 0 ^ CCCD value ^ Function | ^ Descriptor UUID ^ Bits 1 and 0 ^ CCCD value ^ Function | ||
| | 0x2902 | | 0x2902 | ||
| Line 89: | Line 89: | ||
| === Step 4 === | === Step 4 === | ||
| - | We have to extend the client software from scenario IoT_8 with some elements. Let's start with adding another remote characteristic which is responsible for receiving notifications. | + | We have to extend the client software from scenario |
| <code c> | <code c> | ||
| #define REMOTE_NOTIFY_CHARACTERISTIC_UUID " | #define REMOTE_NOTIFY_CHARACTERISTIC_UUID " | ||
