Betteridges Law of Headlines states, Any headline that ends in a question mark can be answered by the word no. This law remains unassailable. Homebrew is a term frequently applied to video games or other software produced by consumers to target proprietary hardware platforms usually with hardware. Software and other tools. Configuring is based on webinterface on port 80 of the devices IP Older nonSFN enabled firmwares web interfaces sample is here. EEPROM also written E 2 PROM and pronounced eeprom, doubleeprom or esquaredprom stands for electrically erasable programmable readonly memory and is a. As I said earlier, everything looks good indeed. Yes it is possible to update to v11. To be on the safe side, I always urge people to first check th. Bus Pirate v3 is a universal bus interface that talks to electronics from a PC serial terminal. Get to know a chip without writing code. Poke and prod the inner. Easy. DAB v. 2 Ethernet interface DABDAB modulatorIntroduction. This page describes hardware for Ethernet based DAB transmitter Easy. DABv. 2.  Last update 0. Nominal Transmit Frequency 1. Mhz. Maximal Tramsmit Frequency 4. Comprar Tabaco Andorra Online. NNEditor/20150501/asus_shop3_195246.png' alt='Spi Flashrom Programmer' title='Spi Flashrom Programmer' />MHz with 1. Ghz reference clock. Transmit Power                 6. Bm. Drivers Installation Needed     NOSoftware Needed                 NO Only if you need to create ETI stream yourselve, ODR Dab. MUX is neededLEDs That shows state Yes underflow, PLL lock, link activity, fpga statusIQ samples width 1. Complex sample rate 6. Ss. Input interface 1. Mbit Ethernet. External power 5. V 2. A power consumption is up to 7. A in old versions, and up to 4. A in new onesOutput RF connector SMA Female The main point of creating this hardware is to have possibility to create DAB stream without need of PC. So all CPU intensive job, like ETI processing, Adding error correction codes, Adding Phase Reference, DQPSK, Fourier transformCOFDM and IQ processing has been moved from the software to hardware part into XC6. SLX9 FPGA. After this changes been done, all what is needed is ETI stream from the satellite provider or from ODR Dab. Its not socketed, but it has a special spi header to interact with the bios. I will attach the link to the blogpost I found which mentions flashing the sst. Spi Flashrom Programmer' title='Spi Flashrom Programmer' />Mux sent by the TCP connection to the board. Just set network parameters, point to the source of ETI stream ip and port, and set RF frequency and amplitude and volia There is also modifications page, that describes how to enables SFN operationing by using various GPS   Hardware Description. The software hardware solution looks like this Additional processing done inside FPGA actual modulator schematic Here is the list of used or created IP cores which does the job inside FPGA Pico. Blaze. 6 CPU SPI and AXI4 Stream perpiherals used as arbiter for datastreams and configurator of the DAC. FIFO Buffer for ETI frames. ETI Parser this block parse ETI NI stream and prepare it for modulatorPRBS mix phase reference with data. Convolution adds error correction code to the datastream. Puncturing puncture convoluted data depending on choosed error protection level. Timeinterleave this block interleaves data in time, as described on specification. It needs additional hardware SRAM, which is presented on the board, since its max size may be up to 1. Mbit for 6. 4 stations. Framemux mixes 4 ETI frames into single frame for DAB Mode I needed by radio interface. QPSK Mapper frequency interleaver IP Name mapinterleave10DQPSK Modulator. IP Name dqpskmodulator101. IP Name preifftreord10Inverse FFT xilinx default, with cyclic prefix insertion and auto controlling of dynamic range. FIR filter, which increases samplerate up to 8. Sampsec and rejects unneeded frequencies. FIFO Buffer for complex samples. Additionally, each FIC data on ETI header is parsed on the fly. This means, that you can switch on the fly from one source to another without rebooting or reconfiguring anything. The limitations are only transmission mode will always be 1 1. Schematic and PCBThe components on board are Wiznet W5. TCPIP job. Maximal bitrate for 5. MHz SPI bus is 1. Mbits. Xilinx XC6. SLX9 FPGA with 8 bit soft cpu and all modulation blocks for DAB mode I. Cypress CY7. C1. 01. DV3. 3 SRAM for timeinterleaver block inside FPGA, supported up to 6. Analog AD9. 95. 7 DAC which used in previous designs. Micron M2. 5P1. 6 Flash for FPGA bitstream, webpages and saved RF configuration. RFMD SPF5. 18. 9Z or SPF5. Z low noise MMIC amplifier. LDOs, crystals and RF filter. Eagle project files are in source code section. Software and other tools Configuring is based on web interface on port 8. IP Older non SFN enabled firmwares web interfaces sample is here. As additional features, You can turn ONOFF transmission on the fly by pushing Turn OFFON RF frontend, this will switch DAC tofrom sleep mode, so output signal will appear or disappear immediatly. In this case ETI frames processing is still working. Also if you wish to disconnect modulator from the server from which it receiving ETI frames, you can push Turn OFFON ETI socket and connection to the source will be dropped or initiaded again. Usage examples. Modulator needs only network ETI stream, provided by ODR Dab. Mux or satellite ETI stream converted to ETI NI format, below are some examples on how to produce such stream and feed it to modulator Using pre recorded satellite dump file 0,0x. Using old CRC Dabmux application. CRC Dab. Mux L Label. Test A testfile4. S L Label. 1 C O tcp 1. Or You can use minimal configuration file minimal. ETI stream. odr dabmux minimal. Next, go to configuration interface of the board and and set Connection mode to TCP client, Remote IP to your computers IP, where you are running odr dabmux and Remote PORT to 1. After set them, push apply config button and answer Ok for reboot the board. Thats all, you must see that new client connected to the odr dabmux, and boards red led underflow must be turned off, and from now you are on the air. Please note, that Zero. MQ password protection IS NOT SUPPORTED. You need to provide raw TCP for ETI data or Zero. MQ without password. You can discuss this device usage and share your experience in mmbtools group in thread about FPGA DAB Modulator. Measurements. Signal measurements, and process of enchancing of its quality is described on this page. Source codeOld pcb vesrion 1. SFN firmware easydabv. Xilinx ISE 1. 4. 7 archive project with all IP blocks and modules source code. To generate bitstream, open this ISE project and run Generate Programming File task. After it successfully completed, you will find easydabv. FPGA. w. 55. 00 lx. Eagle Schematic and PCB project. Size 1. 0x. 5 cm. Ready made firmware for FLASH ic with webpages and saved configuration easydabv. D, ampitude 1. 3easydabv. Below is described how to run this update. New PCB and SFN enabled firmware easydabv. Xilinx ISE 1. 4. 7 archive project with all IP blocks and modules source code. To generate bitstream, open this ISE project and run Regenerate cores then Generate Programming File task. After it successfully completed, you will find easydabv. FPGA. w. 55. 00 lx. Eagle Schematic and PCB project. Size 1. 0x. 5 cm. Ready made firmware for FLASH ic with webpages and saved configuration easydabv. D, ampitude 1. 00Firmware and script for HTTP based update easydabv. DO NOT run HTTP based firmware update if You dont have backup ways to revert board to working condition, like SPI flash or JTAG programmer Additiona notes, related to SFN enabled firmware. Non SFN boards also works with newer SFN enabled firmware. So You can use this firmwares on old boards too use 2. MHz as reference clock for old pcbs and 1. MHz for new ones. Its also highly recommended to have additional SPI SRAMs on board for more stabe streaming on high latency networks. Note. 1 if You have no additional SPI SRAM buffers, then accessing to configuration web interface is recommended only when ETI stream source must be turned off, so board is not loaded by modulation task. Note. 2 If some parameters has been changed on web interface and apply config has been pressed and the page status stucks at erasing partition. Otherway You need to do hard reset of the board.