DA1469x

USB_MSD + Fat32 + SD card

Tue, 2020-07-21 16:49--Feodor Alexandrov
Forums:
Dialog Smartbond Bluetooth Low Energy – Software

Hi Dialog,

I have a worknig SPI driver for the SDHC card with FATFS layer. I can read/write files on SD correctly and then see it on PC (if SD card injected separately). Now I want to connect SD card via MCU to PC and provide direct access to files on SD card via MSD interface. What is the minimal required actions order for configure USB MSD in this mode? May be exist some more detailed documentation or application example about how to insert the custom i/o layer to to MSD?

PDM mic processing

Mon, 2020-07-20 10:15--aectaan
Forums:
Dialog Smartbond Bluetooth Low Energy – Software

Hi Dialog,

At the moment I work with audio acquisition system, that consist of two PDM microphones and DA14695.

目前continiously流数据(PDM克洛ck 2MHz, sample rate 16000, bit depth 16) from dev_out.memory_param.buff_addr[0] (only one mic at the moment) to the USB-CDC. I transform received data by ffmpeg with flags -f s16le -ar 16000 -ac 1. Resulted data is too quiet.

When I transform data with flags -f s16be -ar 16000 -ac 1, sound loudness is good, but it have a lot of distortion sometimes.

Ble gatt_client issue

Mon, 2020-07-20 08:34--邓昌永
Forums:
Dialog Smartbond Bluetooth Low Energy – Software

hi！

I use the DA14695 chip to join the ble_profiles AMS service and the ANCS service at the same time. There is also a custom Bluetooth service. There is nothing wrong with debugging separately, but after the merger, it is found that the AMS service and the ANCS service interact through the gatt_client and Bluetooth protocol. After the merger, some conflicts will occur. How to solve this problem?

Proximity WiRa application which is the best design/EVB KIT to start from?

Sat, 2020-07-18 16:49--Maurizio Malaspina
Forums:
Dialog Smartbond Bluetooth Low Energy – Hardware (device & reference designs)

I have to develop a proximity (or WiRa) application, so I've some dubts about the choice of the most appropriate evaluation kit to start from.

Reading the UM-B-137 "SmartBond™ Wireless Ranging SDK", this references both UM-B-103 "DA14695 USB Kit" and UM-B-093 "DA1469x PRO Development Kit" and I've noted that the DA1469x PRO DK Daughterboard implements an Inverted L shaped antenna, while the DA14695 USB Kit uses a printed ZOR type antenna.

So I wonder if the performance of the solutions are equivalents?

da1469x usb development board, examples like Central and peripheral are not working

Fri, 2020-07-17 09:06--jagath52
Forums:
Dialog Smartbond Bluetooth Low Energy – Software

Hello

I have 2 DA14695 Development Kit – USB board and examples like Central, peripheral present in dkapps folder are not working as expected and other examples projects like da1469x_pc_custom_service_central and da1469x_pc_custom_service_periph is also.

I followed procedure given in docs but central is not able to connect to peripheral in both projects, i verified with peripheral is detected by ble scanner in mobile application.
Central just prints "BLE Central application started" but not able to connect to peripheral device.

Audio Processing

Wed, 2020-07-15 14:03--aectaan
Forums:
Dialog Smartbond Bluetooth Low Energy – Software

Hello Dialog team,

I'm trying to acquire data prom two PDM microphones and transmit it further (over USB to PC, or via SPI to SD card, or somwhere else).

在apu_demo我发现的例子中,如何记录sample and process it, but documentation for APU is slightly unclear, so I'm not understand, how to process audio without stopping audio manager every time, when buffer is full. Can you share more applicable example, please?

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