Hi, I am using MCB2300 (mounted with LPC2387) which i want to act as USB Host for USB Pen Drive. I tried downloading the example code of http://www.keil.com/support/man/docs/rlarm/rlarm_fs_ex_msd.htm. but it says "Drive not connected, please connect it ..." . I observed, that USB pen drive is not powered up when it is connected to MCB2300 eval kit. The LED on it lights up when connected to PC. Please guide me, do i need to enable any thing in software or change any sought of jumper settings on eval board.
> I am using MCB2300 (mounted with LPC2387)
The USB standard-A receptacle on the MCB2300 board works just for LPC2388, which has the second USB port.
http://www.keil.com/mcb2300/mcb2300-schematics.pdf
a) You may replace LPC2387FBD100 to LPC2388FBD144.
OR
b) Make up extra connections for the standard-A receptacle, so that it connects to the "first" USB port (USBD+A / USBD-A, etc). Modify the firmware example, so that it uses the "first" USB port.
Tsuneo
Hi, I am shocked to hear this. Is this mentioned anywhere, which i missed out, please share the link/document. And as you have mentioned, it means that this is the limitation of the mcb2300 board lying with me. By upgrading the Controller to LPC2388 or by modifying the connections from USB B to USB A, i would be able to work out USB A connector. I will work out the feasible option. But Just in case, if i change the USB connector connections, can u please suggest, which firmware example should i use for development. And Really thanks for your reply, it saved much of my future time that i was going to put in debugging why USB A connector is not working on MCB2300 with LPC2387 on it.
I got to above conclusion, seeing the schematic of MCB2300 board on the Keil's web. http://www.keil.com/mcb2300/mcb2300-schematics.pdf
Sheet #6 of the schematics shows the circuit around the USB-A receptacle. You'll see these USB-A connections on the schematics,
D+2 -- R83 -- P0.31 D-2 -- R82 -- USBD-B
P0.31 and USBD-B pins are seen just on LPC2388 (IC4, on sheet #1), not on LPC2387 (IC10, on sheet #5)
But Keil mounts the USB-A receptacle on MCB2387, though they don't put the receptacle on MCB2360/2370
Pictures of MCB2360/2370/2387/2388 http://www.keil.com/support/man/docs/mcb2300/mcb2300_intro.htm
I recommend you to contact to Keil support to ask why MCB2387 mounts unused USB-A receptacle. They may have updated the board circuit from above schematics.
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