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EV-LM3S811 port at 20MHz instead of 50MHz

Posted by Nobody/Anonymous on October 27, 2006
Got the FreeRTOS port for the EV-LM3S811 working right out of the box! Amazing! I added a blinking LED task with no troubles, after reading through the excellent docs on the web site.

I noticed that the hardware initialization routine prvSetupHardware() sets the system clock to run at 20MHz by using the SYSCTL_SYSDIV_10 prescaler. Using SYSCTL_SYSDIV_4 would give 50MHz operation. I tried it and of course it's not that simple. I suspect the timing of the OLED must be adjusted somehow - nothing appears on the display.

Just thought I'd ask.


RE: EV-LM3S811 port at 20MHz instead of 50MHz

Posted by Nobody/Anonymous on October 27, 2006
The latest FreeRTOS download includes an updated driver for the display. Maybe that would help unless you are already using the V4.1.2 download?

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