ARM Technical Support Knowledge Articles

USING WITH SILABS SFR PAGING

Applies to: RTX51 Tiny Real-time Kernel

Answer


Information in this article applies to:


QUESTION

Some SiLABS C8051Fxxx versions implement a paged SFR scheme that expands the number of available SFR addresses. This paging scheme affects the SFR locations used for the RTX51 Tiny system timer.

What changes should I make using RTX51 Tiny together with a SiLABS part that is using SFR paging?  Are there any restrictions?

ANSWER

RTX51 Tiny uses the standard 8051 Timer 0 (mode 1) to generate a periodic interrupt.  This timer interrupt performs task switching.  To use RTX51 Tiny on a SiLABS device with SFR paging, make the following modifications to the configuration file CONF_TNY.A51:

These changes impose the following restrictions when you are using SFR paging on a SiLABS device:

MORE INFORMATION

SEE ALSO

Article last edited on: 2006-10-29 18:59:17

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