All Questions
Tagged with arduino-ide bluetooth-lowenergy
18 questions
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BLE ESP32 connection problems: "assert failed: heap_caps_free heap_caps.c:360 (heap != NULL && "free() target pointer is outside heap areas")"
I have a mi Smart Cube from Xiaomi, and I am having problems when connecting the cube to ESP32 (code function is only LED with the movement of the cube, I took video on YouTube to learn)
Full serial ...
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1
answer
439
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Guru meditation error (LoadProhibited) on BLEDevice::Init with ESP32Cam
I'm struggling with a Guru meditation error when I try to use BLEDevice::Init to get credential from a smartphone.
The begining of my code works but when I reach the Init part, I got this message :
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ESP32 Scan for BLE devices with in mesh network
I'm working on a project where I have 3 esp32s in a mesh network that each scans for a 4th to 5th esp32 that inst in the mesh network to get the RSSI of the BLE advertisement.
I made code where I'm ...
- 117
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i am trying to incorporate the wireless communication in free rtos using arduino ide. any thoughts?
it is told that core 0 is recommended be used for WIFI/BLE communication by default. if i do that and initialize wifi.begin() in void setup() then it is going to run on core 1(since setup task is ...
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2
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ESP32: BLE transmission speed is very slow
I am trying to build an Android app that interfaces with the ESP32 using BLE. I am using the RxBluetoothKotlin library from Vincent Masselis for the Android side. For the ESP32 side, I am using the ...
- 61
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ESP32 touch sensor for deep sleep
I'm trying to wake up my esp32 to receive data through Bluetooth in nRF Connect, but I have no value of temperature, hummidity and pressure. I don't know why I don't see anything, because my sensors(...
1
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1
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Problems with trying to assign a value to an integer using an ESP32's BLE functionality and Arduino IDE
I am a student currently working on a project for an engineering degree. I have some good base knowledge of coding, data analysis, etc but I am starting to get in over my head. So basically I have ...
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Increase the sampling rate of Arduino Nano 33 BLE
I'm using a Arduino Nano 33 BLE. In my project I have to send the accelerometer and gyroscope data via bluetooth to an android application.
My sample rate is 10Hz but I should have 50Hz. How can I ...
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2
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1
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ESP32_BLE_Arduino | BLEAdvertisedDevice.getServiceData() does not return what i expect
Iam stuck in the trial to setup a esp as a BLE amplifier. Iam trying to fetch the broadcasted/ advertised data of a sensorbeacon (Sent under a service) and to advertise this same data for a short time....
- 21
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How to improve the sensitivity of ESP32 for BLE scanning?
I am using ESP32 WROOM-32 board and programming it from Arduino IDE. It scans some BLE advertising devices. I have checked these data coming from a distance(Checked about 15 meters far from devices) ...
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Unable to retrieve iBeacon UUID (ESP32 BLE Scanner)
I have been using the ESP32 to scan for nearby iBeacon but I was unable to retrieve the UUID of beacons. The serial monitor keeps displaying "N/a". However, I was able to get the UUIDs of beacons when ...
- 31
1
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1k
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iBeacon name not displayed in ESP32 BLE scanner
I am working on a project that involves a BLE scanner using ESP32. I use the installed BLE scanner sample code in Arduino IDE to program the ESP32 but the device is unable to scan for the names of ...
- 31
0
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1
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How to make BLE Server Notify only when status has changed?
I am working with ble on my esp32 using Arduino IDE and am trying to make it so when someone turns a led on, the esp32 notifies the client with either 'ON' or 'OFF'. Currently with my code the update ...
- 53
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C++ string array split after 20 Bytes
I have this code example that is used for making a 20 Byte size packets of data that will eventually will be sent via BLE. I want to change the code so I can input array of my data (accelerometer ...
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Splitting the string for BLE notification
I am working with BLE 4.2 (ESP32) that sends IMU (accel, gyro, mag) data to my mobile app (Android). Unfortunately, I can send only 20 bytes in one packet.
This is the code I have: (I am connecting ...