Forums - Connect to BT HFP and advertise on BLE

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Connect to BT HFP and advertise on BLE
Join Date: 12 Aug 15
Posts: 9
Posted: Tue, 2021-06-29 15:01

I'm using the MDM9207 chipset and have it connecting to a Hands-free profile device over Bluetooth. However, I want to tell if an IOS based phone is near the MDM9207 device. IOS can only discover a device, if it is paired with it (which it isn't) or over BLE. However, I don't see a way to get BT HFP and BLE advertisements going at the same time. Any ideas?



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Join Date: 8 May 23
Posts: 2
Posted: Thu, 2023-05-11 23:30
Based on the information you provided, it seems that you want to detect the presence of an iOS-based phone near your MDM9207 device, which is connected to a hands-free profile (HFP) device over Bluetooth. However, iOS devices can only discover a device if it is paired with them or if it is broadcasting Bluetooth Low Energy (BLE) advertisements.
Unfortunately, it's not possible to simultaneously use both the BT HFP profile and BLE advertisements on the MDM9207 chipset. The chipset's firmware and Bluetooth stack likely do not support running both profiles concurrently.
However, you might consider an alternative approach to achieve your goal. One option is to implement a BLE peripheral on your MDM9207 device that advertises a specific service or characteristic. Then, you can develop a companion iOS app that scans for this specific service or characteristic to determine the presence of the MDM9207 device. By leveraging BLE, you can detect the proximity of the MDM9207 device without needing a Bluetooth pairing.
Keep in mind that this approach requires you to modify the firmware on your MDM9207 device to support BLE advertisements and implement the desired BLE service. The specific steps and feasibility may vary depending on the capabilities of the MDM9207 chipset and the available development resources.   Tell Happy Star Survey
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