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The Input/Output blocks don't accept/use the variables - however using them in a calculation works perfectly.
generates:
(With TXpin set to port B1)

Martin

Unfortunately (I think it would be a useful feature) - FC doesn't seem to support this directly. However it is pretty easy to implement a macro to do it for you: SetPortPin.fcfx Note that this is specific for AVR (328p) processors - with ports B, C and D - and would need to be tweaked for other MCUs...

Should be possible to use for menus - just need to have an offset to the start of each element. As long as this doesn't fall into a compressed run then all should be well - just need a set of pointers to (or offsets) for each graphic. Compressing each element separately and then adding to the LUT is...

A couple of ideas to improve the compression slightly: Don't compress runs of length 2. Currently AA 'compresses' to Esc 2 A. This is easy to implement and doesn't require any changes to the decoder. Analyse the data before compression and use the value with the lowest incidence of singletons (& run...

Here is a copy of the Arduino decompress routine with your bitmap (compressed) - I've only done a quick visual inspection of the output data but it looks (very) similar to the original (as it should be - it being a lossless compression technique) rle.fcfx As is - it just outputs the data to the UART...

No - the compression probably won't be run on the Arduino, - and a slight glitch - actually it compresses to 3066 bytes! (It's been a while since I used C++) Still - the code there (i'll update the above message) - would have to run on the PC - and generates the data to add to a Flowcode program LUT...

Just created a simple compressor in C++ - and your data file (as above) compresses from 11476 bytes to 1700..... Amending the above RLE - program it can decompress this (and the output looks AOK) I needed to generate embedded C for the data - not enough RAM to save as an array in RAM. RLE.zip (Updat...

lzo -Lempel–Ziv–Oberhumer? - yes something like but a lot simpler.... RLE - can be encoded in several ways. Here is an example using an escape character (I use 27 :-) ) followed by a count byte and then a data byte - this allows runs of up to 255 bytes to compress to 3 bytes - depending on your data...

The data looks a good fit for some compression too? Even simple run length encoding would reduce the size (all those blocks of 255s)

Can you acts the data from C rather than using a LUT ?

Martin (2)

Thanks Ben, I'll have a try with Atmel Studio - I think I had a copy installed... I don't think it's a power issue - I have the LEDs powered from a bench supply (with a cap across to limit startup problems and a common ground) and the strip of 60 is working fine when using the adafruit library... If...

I've been trying to get an ATTiny85 to drive a WS2812 LED strip without much success. (I got it to work for ~10 LEDs) It seems the timing is a bit out - the Adafruit library puts out a ~812kHz - but using Flowcode I'm just getting ~750kHz - looking at the output on an oscilloscope. Has anyone got an...

Just one more idea - if you tick the box in 'Project Options' - Use #if for constant decisions - then define encoder_selectie as a constant (value 1 etc)rather than using it as a variable and then assigning a value - then the unused code should be optimised out. What happens when you run the program...

Sometimes it's good to take a break and sleep on it! Computers are good at doing simple tasks - very fast! So in Ben's code - the ADC is read 10 times with a 5ms delay between each reading - so 50ms per 10 times (so still ~20 times per second - okay a little slower as the ADC read takes some time) T...

One suggestion - output some debug information to the UART. This will allow you to see what is happening in a bit more detail than on the LCD - where things keep getting overwritten. For example in Ben's example above - input voltage1 (voltage returned by ADC) & voltage2 - current sum of input volta...

A few thoughts: Change encoder_selectie to a byte (rather than a bool) or use true/false (or just if encoder_selectie ) (It shouldn't make a difference - a bool is just a byte - but it makes your intentions clearer) I can't find in the code any macro where encoder_selectie is changed to a value othe...

Can you post an example that demonstrates this? The names shouldn't cause a problem as Flowcode changes the names of variables to FCV_NAME or FCL_NAME depending on whether they are global or local respectively. Are you combining results If a=1 and b or other? Where some parenthesis might be needed. ...

One for Raspberry Pi users: Was thinking about unzipping a file on the Pi - using Flowcode.. That would be a big project and madness unless you had )a lots of time and b) someone was paying big bucks and c) lots of (hard) work. So the easy way is to use someone else's code. The good news is that thi...

Hi John, What a cool (or should that be ghoul?) project.... There are many ways to achieve what you want - depending on how 'random' you want the ghosts to be: A few suggestions: 1) If the ghosts are 'started' by a sensor - then use a timer / counter and look at the value when the person trips the s...

Hmm, I tried: R1 = (Vs * R2) / Vout - R2 Where R1 is the resistor I want to find - Vs is input voltage, R2 is 10000ohm and Vout is adc read voltage Adc voltage = adc_read value * 5.0 / 1024. I've assumed input voltage (and ADC ref voltage) to be 5.0. So: In a simulation only world - I subbed in 512 ...

You need to assign the return value to a string so:

str = FloatToString$(voltage3)

Where str is a variable defined as a string.

Martin

change variable voltage3 to a string but it comes up as invalid im using floattostring$(voltage3) ??

Can you post an image / chart for that - sounds like a typo / mismatched types error?

Martin

Hi,

What's coming up as invalid - ie is it compiling and something odd is displayed (NAN (Not a number), Odd chars or 'Invalid'), or is it failing to compile?

Martin

I've added this as a sub-topic - it might be useful to some. A little background: I was looking to allocate some dynamic memory to allow a macro to take variable length parameters (arrays) - make a copy (algorithm is destructive) process the data and then return the allocated memory. All arrays are ...

I can't comment on the hardware side of things - but a couple of things software wise: 1) Converting a float to a string is easy: float.png PrintNumber just takes an integer - so the value would just show the integer part (ie 3.124 will show as 3) - this is C converting from a float to an integer fo...

So I did the reverse algorithm.. I tweaked my original to allow even bigger numbers (cos if big is good then bigger must be better). Here it converts a 78 digit number (Fermat's 8th) into a 512 bit binary number and back to a string.... Now we just need some math functions (+,-,* and if you're feeli...