Search found 5 matches

by wrswrsnz
Fri Oct 21, 2016 4:27 am
Forum: EtherTen
Topic: Issues using pin A4 on Etherten (input)
Replies: 4
Views: 6559

Re: Issues using pin A4 on Etherten (input)

I just wasted about 30 minutes trying to find out why the A4 & A5 pins had an offset due to zero documentation easily visible for this board. Maybe you guys should update the schematic to show the pullups are present and connected by default. It just might help others using this board not waste thei...
by wrswrsnz
Tue Mar 10, 2015 9:52 am
Forum: EtherDue
Topic: Parallel Read
Replies: 5
Views: 5723

Re: Parallel Read

The slightly slower reads won't be a problem at all anyway. The extra time doing the reads will be nothing compared to the gains being able to do single cycle 32 bit math vs many many cycles for the same calculation on the Mega... Also, the much faster clock speed will help. At present I can only sa...
by wrswrsnz
Tue Mar 10, 2015 9:45 am
Forum: EtherDue
Topic: Parallel Read
Replies: 5
Views: 5723

Re: Parallel Read

Thanks for the ideas. It would be interesting to do a comparrison to which is faster - the loop method or the bit-bang method 1 line at a time. For this application code space is not a problem - speed is. I suspect I may also be able to use a semi-lined up solution. I'm going to have to make an inte...
by wrswrsnz
Mon Mar 09, 2015 8:17 am
Forum: EtherDue
Topic: Parallel Read
Replies: 5
Views: 5723

Re: Parallel Read

Here's the layout with the equivalent port mapping so it's clear what I mean: PIN - Bit - EtherMega - EtherDue 22 -- 0 ---- PA0 --------- PB26 23 -- 1 ---- PA1 --------- PA14 24 -- 2 ---- PA2 --------- PA15 25 -- 3 ---- PA3 --------- PD0 26 -- 4 ---- PA4 --------- PD1 27 -- 5 ---- PA5 --------- PD2 ...
by wrswrsnz
Mon Mar 09, 2015 7:43 am
Forum: EtherDue
Topic: Parallel Read
Replies: 5
Views: 5723

Parallel Read

I'm looking to convert a Ethermega project over to use the EtherDue to gain native 32 bit support and massive extra speed. Doing 16 bit, 32 bit and float math on the Ethermega is very slow by comparisson. My current design uses 3 high-speed 16 Bit ADC which are read in 16-bit parallel into Port A & ...