Am Donnerstag 01 Juli 2010, 22:23:52 schrieb Sébastien Bourdeauducq: > Hi, > > It seems the DDC (Display Data Channel) interface also works on the board. > I was unable to completely test it - strangely, my monitor responds to I2C > addresses 0x92/0x93 and 0xb2/0xb3 which I don't find in any spec, and I > don't have another monitor to test. But the fact that the monitor reliably > responds to fixed and consecutive I2C addresses means that the electrical > interface is probably OK. > > Michael, can you try the following bitstream and demo firmware on your > board and screen: > http://www.milkymist.org/ddctest > > To load the bitstream, use Impact (assign new programming file to the FPGA, > then "Program") and use flterm (found in the "tools" directory of the MM > SoC source tarball) to load the new firmware, with a command such as > flterm --port /dev/ttyUSB0 --kernel boot.bin > > Then, the "edid" command in the firmware should dump the EDID block of your > monitor. Tell me if it works. % edid Memory dump: 0x00000000 00 ff ff ff ff ff ff 00 15 c3 90 16 00 00 00 00 ................ 0x00000010 16 0d 01 02 68 22 1b 78 ea ee 95 a3 54 4c 99 26 ....h".x....TL.& 0x00000020 0f 50 54 bf ef 80 81 80 81 40 81 4f 71 4f 01 01 [email protected].. 0x00000030 01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70 ......0*.....@0p 0x00000040 13 00 51 0e 11 00 00 1e 00 00 00 ff 00 34 33 34 ..Q..........434 0x00000050 31 32 30 36 33 0a 20 20 20 20 00 00 00 fd 00 32 12063. .....2 0x00000060 4b 18 50 0e 00 0a 20 20 20 20 20 20 00 00 00 fc K.P... .... 0x00000070 00 4c 35 35 37 0a 20 20 20 20 20 20 20 20 00 e0 .L557. .. 0x00000080 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x00000090 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x000000a0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x000000b0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x000000c0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x000000d0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x000000e0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0x000000f0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
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