Matrix user forums

Compiles OK for me - what version of Flowcode are you using - and what errors are you getting?

Martin

Now downloaded! The 'Buy now' (upgrading) page is just blank though! First impressions are pretty good - 'tis a pity that the 'free' version doesn't allow you to access all the components? Martin + the code folding works great! - Some of the default colour combinations are a bit off (Try 'dark' pseu...

Try adding some debug statements

So - for example - send StringIP to UART after receiving it.

What have you tried so far (did you implement the above/get rid of the StringIP ="") - any idea where is it going wrong?

Martin

What time does version 8 go live?

Another possible problem:

If SIZE is greater than the length of StringIP (20) - and after a '[' character is received there is no terminating ']' (due to a corrupted block or some other problem) then Ass_IP will overwrite memory causing a crash or subtle bugs?

Martin

Adding the calculation macro Should do the trick (but note my previous comment about all the ip address being within SIZE bytes)
Martin

Hi Ferla, Took a quick look at your code and (my Italian is no where near as good as your English) think I've spotted a problem: In Ass_IP ass_ip.png Just before you attempt to decode StringIP - you set it to "" (empty string) This will surely stop things working as you expect! Another possible prob...

v8 - looks very interesting.. Particularly the code-folding/layout options. The pricing will be a major decider for me - only been using v7 for less than a year - may have to wait for v9. I'll probably succumb to temptation and upgrade the key components that I use most - the rest can follow on as I...

Hi Ferla,

Can you post your current code?

Martin

Hmm - has an extra master_uninit in the transmit routine... Removing it doesn't fix things however.

Martin

Does this help?

http://www.matrixtsl.com/mmforums/viewtopic.php?t=6805

Ok - so after your starter for 10..... What I'm trying to do is create a chain (actually a ring) of Arduinos.. The code that does('nt do) it is: MasterSlave.fcfx But note that it doesn't work :-( I did get a message spinning around briefly, but just random numbers and when I modified the code to tra...

Thanks to Leigh and Martin... Yes, fell into the trap of reusing a variable, and giving it one job too many.

Martin.

A small related problem - surely not enough to warrant a new topic. In a group of 3 arduinos - One acting as master and transmitting to two slaves. This seems to work aok - with one exception - one of the slaves seems to receive the data transmitted by the other slave (but not vice versa - it is alw...

Good luck - let us know how you get on!

Martin

Good luck - let us know how it goes...

Martin

To answer a couple of questions from earlier: 1) the '%' is the mod operator (remainder) so i % 2 will return 0 for i = 0, 2, 4 and 1 (or true) for 1,3,5.... 2) Flowcode (v7 at least) does support multidimensional arrays... So for example a BYTE variable declared as: x[40][240] would declare an arra...

Other thoughts: 1) I copy the two nibbles to a variable - so that if an interrupt does occur the new data won't ovewrite what we are working on. If the timing is that tight, however, an interrupt occurring will likely mess things up anyway. 2) Replace the Output to port macros with inline C (or Asm ...

I converted to use a bit mask. I was a bit unsure where the stretch clocks went out - so I've put them after odd pixels - this might need tweaking.... S_v7.fcfx As a question - the clock cycles output will be very short- are you sure on the timing of this - Flowcode does have some overhead - setting...

Okay - this parses an input ip address in the format a.b.c.d (ie 112.1.22.122) - note that the ip address should be in the correct format (ie 4 values 0..255) and NO allowance is made for variations (for example spaces, extra '.'s, missing values - allowing for every possibility makes the code much ...

Sorry - the pseudo code is just meant to describe the steps required to do what you want to do.... It is easy to do a similar job in Flowcode - create dummy macros for sub routine - build the top level and then work down to the lower level routines. (This is known as "top down programming") So what ...

Hi Ferla,

You need a slightly different approach if using a separator... I'll post you a sample this evening...

Martin

For speed you could possibly either use a switch (or a jump table, though not easy in Flowcode) So in pseudo code: b = Read 4bits Switch on b 0: Writepixel(0)x4 ... 1: Write Pixel(0)X3 Write pixel(1) 2: Write pixel(0)X2 Writepixel (1) Writepixel(0) .... 15: Writepixel (1)x4 A lot more code but mostl...

Hi, My five cents worth of help: I wrote a program that decodes bitmap files for display - so while not exactly analogous to what you are doing may give some help: The code that reads a single row of a 4 bit file is : (may appear at the end - I haven't got the hang of getting images to appear mid me...

Thanks - Seems to work ok when the Nanos are reset - there is a brief window of opportunity before the body of the receiver program (a slightly modified Matrix example) runs but after the i2c_slave library has initialised.. I feel I should probably be responding with a ACK (or NAK)? rather than wait...