Matrix user forums

I did not want to use CAN as this interface would already be spoken for in some cases, and one should never underestimate the trouble that can be caused on a CAN bus.

I was thinking more the SPI / I2C type interfaces as these are standardised with IC producers - That said I am unsure as yet how ...

Is this possible at all ?

Or would this require a separate external design ? ( As I write this the word retorical is whizzing around my mind )

My imeditate thoughts are for usage of say a programmable resistor to present a varaible signal load to a controller ?

I like the MIAC as it has a ...

Are there any tutorials for this kind of usage.

Topics I need to understand:

1) How to implement this kind of memory management within the Flowcode environment.

2) How to keep track of my data - Presume I need to prescribe the locations to which the data is read and will be stored.

3) Reading ...

Hi,

Am wondering if it is possible to add memory to the MIAC and what would be the best suggested approach.

I plan on using the MIAC as a CAN node, however this could require a lot of data. e.g a mutiplexed CAN frame which sends out configuration data. I know at least 1 of the total 'file' sizes ...

Hello,

Is it possible to set the buad rate to 100 kbps using the flowcode components for MIAC ?

I have looked at the component and all the popular baud rate are there, but I know there are some systems using 100kbps rates.

Thanks

Mark

Found manual ! ( and page 69 )

Thanks Medelec35, did not see that one when I seached for 'delay', must be losing it.

Still thinking about it FC could have i) documented in FC help (knowing my track record, probably is written down somewhere in FC help) OR ii) Better still handled it in FC version ...

Think I found the answer ?

looked in the header file and delay_ms is passed a char parameter which would mean max 250ms delays, which was about the flash rate I guess, so me passing a Int with value 750, I guess either lost the additional above 255 or overflowed a few times and ended up on 250ms ...

Mmmm, I changed the setting for the delay to seconds and then reduced the variable value appropriately and not seems to work about right..... .????

Is there some kind of odd logic that does not allow for 3000ms but allows for 3s, which are the same.

No clues in help as to any logic.

regards,

Mark

Hi,

Using v4 FC and really simple program to print a message to the display then wait delay period, then clear, then wait delay period and print message.... etc, etc, etc for 3 times.

They delay uses a variable which is set on entering the macro.

When I change the assigned value of variable (type ...

Hello,

Apologies, posted here as no ability to post in FC4 forum.

I know that C code block can be used to write custom code and declare variables. However it is not clear if the variable would be global or local to the macro within which the C code block is inserted.

Basically I just wanted to ...

Thanks Sean,

Currently I do not really want to write my own interrupt handlers. Lets just say my abilities are not there yet....

Now, back to the CAN component approach...

Is the 'pseudo interrupt' used ? i.e. If I go into the ext properties (under Matrix CAN board specific settings) for the CAN ...

Hi,

I am trying to find examples of using interupts for CAN, but cannot find any.

Obviously anything using MIAC is better based on HW configuration on the MIAC.

I noticed in the MIAC programming guide that only INT is used and is wired to RA4. I cannot however find anything using the interrupt ...

Oooh I found some help, nested in the Ext Properties sub menu.

I shall have a read of this 1st.

While flicking through the tabs, did I see correctly that the Tx is default defined as Standard CAN Frame IDs and the RX is default defined as Extended CAN frames, Is this possible ?

Regards,

Mark

Hello,

I see there is a CAN1 and a CAN2 component, there is no explanation I can find detailing what the difference between these 2 components - I can guess ... CAN2 has extended addressing support, but I would have though each component macro would have had a component macro specification defining ...

Will version 4 be available as a free update to v3 owners ?

I have version 3.9.12.26

I did 10 minutes before installing everything else I bought.

Hi,

Installed ASM for PICmicro v3.0 have v3 board.

Having had a few pop ups that told me to consult documentation I decided to look in the documentation in the Start->All program->matrix multimedia->ASM for PICmicros V3->Tools and there is a short listed as "PICmicro development board ...

The following message is displayed in the popup.

"Can't find valid registration information. Please call LicenseInfo function with the registration key before call any other functions of the NTPort Library. Refer to the document and samples for details"

Now I cannot find any Registration options ...

Hi,

I bought the CAN bus bundle amongst some other things to learn specifics of CAN.

Cannot really find much material associated with the Learning bit.

I will be learning Flowcode 1st amongst some other stuff and so will be a bit before getting to the CAN stage, but seeing as I bought this with ...