write to bit band alias using gpdma

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write to bit band alias using gpdma

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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by joshuanapoli on Fri Feb 08 13:17:33 MST 2013
Is it possible to write through a bit band alias using GPDMA?
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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by DF9DQ on Wed Feb 13 06:36:34 MST 2013
The bit-band alias is a virtual address range inside the Cortex-M3/M4 CPU only. The DMA can only reach the "normal" physical address of the GPIOs, but cannot do bit-banding.

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pjs
Contributor I

This would be super useful to have in the documentation. Also, it's super disappointing :smileysad:

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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by Ignas on Wed Feb 13 02:56:12 MST 2013
I'm also interested in this. All I get is DMACIntErrStat error although it works fine when reading/writing to any other part of memory.
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