FT800

albertsm · Joined: 09 Apr 2004 Posts: 5915 Location: Holland

As you might know, PeterM made it his mission to write support for the FTDI FT800 graphic chip.
Peter wrote a bascom library in the form of include files and created reusable functions and procedures. I think he spend a small fortune talking to FTDI support to clear up issues.
He also converted a lot of arduino samples into bascom.
When everything worked i converted the code into a special FT800 library and some compiler statements/functions were added, and in the process some nice features were added to the compiler as well.
At this stage Peter is writing the help which is a lot of work since there are really a lot and i mean a lot! of subs/functions.

Since some of you want to experiment with FT800 i created a beta version. You can get this by writing to support. You must have a registered bascom version in order to get the beta.
You really should start to read the ftdi pdf files/documentation. While i did work hard on this project the last weeks, i am not an expert. In fact, i still need to study everything myself!
That might sound odd but when you see the demo code below you might understand it. Very Happy

Peter might have time to answer questions. But otherwise you need to wait till the official release which should be available this month too.

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

FT800 seems to be a very good product, typicaly English ! clever as Vinculum.
Is your lib works also with audio file ?

I saw also : $NOTYPECHECK and nothing in the help file about, But may be my view is not so accurate ?

Again bravo !

JP Wink

PeterM · Joined: 09 Jun 2008 Posts: 118

JP

Audio files need to be converted to a Raw type of file before played (FTDI has utilities for this).

$NOTYPECHECK will stop the compiler complaining when assigning values to different variables types.
things like word to byte etc.. (Mark will explain more).

jhulsbergen · Joined: 08 Nov 2006 Posts: 3

Hello Is the new bascom version, with the FT800 library allready done?

albertsm · Joined: 09 Apr 2004 Posts: 5915 Location: Holland

it is done but when you mean available, you either need SLA access or wait for the 2078 release. the homepage will have a newsitem when there is a new release. and when you have auto update notification on, you will notice at startup of bascom too.

Per Svensson · Joined: 03 Oct 2004 Posts: 235 Location: Gothenburg, Sweden

Although Mark already emphasized the great job that PeterM has done I would like to say it again.
I know he has performed an ENORMOUS task in this porting to Bascom, because i have seen his struggle
while helping out with a little testing and other small jobs. Remember that when you smoothly navigate
through the powerful functions. Peter did the hard work for you for free !!! (And Mark too of course)

My benefit from following the process has been to realize the enormous graphic power that lurks inside this tiny FT800 chip.
It can do things that an AVR would have no chance of coming even close to. It is a true graphics engine and once you take the
trouble of learning its command syntax (which can be daunting) you will never want any other Display.

The only drawback is that it comes with LCD's that are rather weak on luminance. In bright daylight it can be hard to see.
I imagine that the resistive touch film has something to do with it too. Slightly obscuring the display, Once the capacitive touch is available, it will probably be better.

I have used the FT800 display for an interactive Autopilot frontend with keyboard, Clock, Sliders, Rotating objects and other widgets.
It works very well, but was sometimes be hard to debug because the result on screen can go totally nuts when you write something wrong.
I remember I intended to display a rotating boat-hull (seen from above) and built it up as two mirrored copies of a half hull to save ROM image space in the AVR.
I almost got gray hair before I understood how to transfer the half-image. Then creating an FT800 ram copy. Then cloning a mirrored image. Then rotating them synchronously around a certain point along the joint...
But I learnt a lot, and the best is that it automatically get a very professional look.

Take your time to learn its features and you will just love it.
Then send flowers to Australia Smile

!

/Per

olhexy · Posted: Fri Jan 16, 2015 10:12 pm Post subject:

I landed here to discover more about qsin and qcos. It is not a question about the FTDI FT800 graphic chip.

Help says: http://avrhelp.mcselec.com/index.html

var = QSIN( source )

Var
A numeric integer variable that is assigned with sinus of variable source.
source
The integer variable to get the sinus of.

What is meant with source? Radians? Degrees? Or an other subdivision of a circle? Or is it a hyperbolicly super inverse squared thing? Rolling Eyes

As far as I understand these "var" integers are 0, 1, 2, 3, 4... and so on. But usually every sine is a fp between -1 and +1 Rolling Eyes

I would like to be informed about the magic that creates the integers from the fp's from -1 to +1!

Please give a more accurate definition of this official new "qsin" and "qcos" words in Bascom!

PeterM · Joined: 09 Jun 2008 Posts: 118

Olhexy

The qsin/qcos have a precision is 16 bit, but if you look at the
FT800 Gauges.bas demo, with your Maths knowledge it should
give you some answers.

(Otherwise give me a couple of days and I will sort it out for you).

olhexy · Posted: Sat Jan 17, 2015 1:26 pm Post subject:

Hi Peter,

Please sort it out for us. Give the facts.

I will give my thoughts.
bascom integer
Value: -32768 bis +32767

To discribe all possible angles with this integer I (but I am not Bascom) would define +/- 180° = +/-32768 = "source"
(Or should the mutiplier be 32767?)

79° gives 79°/180° x32768 for "source". So "source" =14381,51111.
It is up to the programmer to round to 14382 or chop at 14381.

In the same way I would define "var" = {sine represented as fp} * 32768
If this value should be rounded or chopped is not defined. Probably the definition should be: "var"/32768 = sine represented as fp.

This is my interpretation of what Bascom could try to achieve.
It is only a bloody guess.
BTW: we also have a 2 byte Word (value 0 to 65535) that could perfectly be used to represent an angle for 0° up to 360°.
I think it is Bascom and not me who should give the definitions.

EDIT: It could be an implementation of http://www.mikrocontroller.net/articles/AVR_Arithmetik/Sinus_und_Cosinus_%28Lineare_Interpolation%29 that gives a fast (max 60...74 cycles) 16bit result.

Per Svensson · Joined: 03 Oct 2004 Posts: 235 Location: Gothenburg, Sweden

Olhexy,

Run this small test and you will see that the argument range is -32768 to +32767
and the output range is also -32768 to +32767

So:
-32768 correspond to -180 deg (or -Pi)
-32768 correspond to -180 deg (or -Pi)
+32767 correspond to +180 deg (or +Pi)
-32768 correspond to SIN(-180deg) or SIN(-Pi)
+32767 correspond to SIN(+180deg) or SIN(+Pi)

End of guesswork?
/Per

Dim I As Integer
Dim Trig As Integer

Print "SINTABLE"

For I = -32768 To 32767 Step 4096
Trig = Qsin(i)
Print I ; " " ; Trig
Next I

Print
Print "COSTABLE"

For QSINE

this becomes:
SINTABLE

-32768 0
-28672 -12539
-24576 -23169
-20480 -30272
-16384 -32767
-12288 -30272
-8192 -23169
-4096 -12539
0 0
4096 12539
8192 23169
12288 30272
16384 32767
20480 30272
24576 23169
28672 12539
32767 0

Robert_d1968 · Joined: 18 Dec 2012 Posts: 67 Location: America

Thank you guys,

I have been working with the FT800 and the STM32F407 series of MCU's.

I was wondering if Bascom would put this together, Now that you have I would like to get the beta release for this ft800 controller.

I will be sending an email to support ASAP!

Thanks again,

Robert

albertsm · Joined: 09 Apr 2004 Posts: 5915 Location: Holland

Beta is closed and in current release 2078. So no need to mail support. Just look at the samples and help.

mototest2 · Joined: 24 Dec 2006 Posts: 53

Hi Guys

I need help, how detect pressed key created by CmdButton ?
and I have one question , in demo files in some demos is lline "'RdMem_WrFT800.." it always generate errors when I use Xmega, how I can resolve it ?
I have display 4.3" 480x272

Thanks
Bob

PeterM · Joined: 09 Jun 2008 Posts: 118

Bob

Before you create a Button (CmdButton) you need to assign it with a TAG number (or a label) so
it can be identified (this applies for any Object/Graphic you want to create to you can identify it).

Then you need to poll and read the value from Rd8(Reg_Touch_Tag) so it can tell you which Object you
clicked on (similar to Inkey,Waitkey, Input).

If you look at Widget_Keys_Interactive.bas and FT800 Keyboard.bas
it will give you a better understanding.

As for the Xmega error, may have to wait for Mark to check.

albertsm · Joined: 09 Apr 2004 Posts: 5915 Location: Holland

bob,

use this code :