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I've noticed that mcb2300 doesn't start after power cycling (http_demo), but starts ok after reset. Is there any way to fix it?
This might be an early version of the example code. We have accidiently mis-configured the PLL.
Please take a look to the current MDK 3.04 where the device is correctly configured.
The only file with different configuration I've found is in \Keil\ARM\RV30\Startup\Philips\LPC2300.s
These are the differencies in LPC2300.s files:
In wesite's Http_demo - - Supervisor mode 0x0000 0080 - MSEL:PLL Multiplier Selection 8 - CCLKSEL:Divide Value for CPU Clock from PLL 4 - CCLKSEL:Divide Value for USB Clock from PLL 4
In \Keil\ARM\RV30\Startup\Philips\LPC2300.s v.3.0.4 - - Supervisor mode 0x0000 0008 - MSEL:PLL Multiplier Selection 12 - CCLKSEL:Divide Value for CPU Clock from PLL 5 - CCLKSEL:Divide Value for USB Clock from PLL 6
I tried to use the new configuration, it's still the same - runs after reset, but not after power cycle.
What else is possible to do?
What do you mean by "after power cycle".
unplugging and replugging power connector.
misterious... I've started my own project, using http_demo settings. As I mentioned earlier, LPC2300.s files from the Keil installation directory and from Http_demo are different, so not to spend time for baud rate calculations I used the same setting for PLL as in Http_demo. Now the board works after power cycle (and i swear it didn't work for Http_demo). Well, I need to figure out where the mistery is (don't like hard-/software misteries..)