Designed in Australia, the DAB+ FM Digital Radio Development Board Pro provides a platform for developing and evaluating DAB+, SlideShow and FM receiver. The board contains a Keystone T2_L4A_8650C DAB/FM module and a Microchip PIC18F14K50 microcontroller. The T2_L4A_8650C module is an ultra low power DAB/FM receiver module with the following features:
The Microchip PIC18F14K50 provides a USB to Serial interface for the T2_L4A_8650C module to communicate with the host PC. Despite the sample code provided in this Development Board for communicating with the board is based on serial communication, user can analyse the serial communication and implements a driverless HID protocol by rewriting the firmware on the PIC18F14K50.
With an upgrade module using the KeyStone T2_L4A_8650C, this board now support SlideShow. Slideshow adds visual content (slides) to radio broadcasts on DAB or DAB+. It enhanced the digital radio with visuals using images in JPEG or PNG format.
78mm x 45mm
The board is typically powered by 5VDC from USB. The PIC18F14K50 is drawing power directly from the USB. From the USB’s 5VDC, the power is further distributed into 1.2VDC, 1.8VDC and 3.3VDC LDO to the KeyStone T2_L4A_865C module. The power of these three LDO is controlled by the SHDN pin.
This microcontroller is used to provide a Virtual Serial Port to the KeyStone module. It is flashed with a customised CDC RS-232 Emulation Demo firmware. Other than performing the standard serial emulation, it also control the power, reset and audio shunt of the KeyStone module.
Reset of the module is performed by RESET pin emulated by DTR of the virtual serial port.
The ICSP programming port is the standard Microchip’s In-Circuit Serial Programming port and is compatible with Microchip’s PICkit.
EXT port has two 5V logic signals, ˉSHDN and ˉSHNT. They are used to control external audio circuitry’s power and mute.
This button, when pressed during a power-up, will trigger the PIC18F14K50’s USB HID bootloader in programming mode.
Mickz from Australia brought new life to this product with his customised frontend. Desired features that were not in the original demo had been added and developed by Mickz. Other than great features, the app and its source code in Visual Studio 2010 are provided free to MP3CAR forum members. In less than 1 hour, Mickz ported the new Pro board to suit his frontend. Below are some screenshots of Mickz's frontend, for details features, discussion and development status, please follow this MP3CAR forum thread
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John from Australia has been working really hard coding his DAB full-plugin for Centrafuse and it is now officially on Centrafuse's store for FREE!! John also came out with a very innovative idea to auto detect the board and this concept is now also used by other developers for auto port detection. Below are the screenshots of John's Centrafuse plugin and for release of this plugin, please head to Centrafuse development forum , full-plugin forum thread and Centrafuse DAB plugin store
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