Matrix user forums

Hello,
I don't understand how work the SPI in flowcode (v5), when i send char like 100,
in the character sent there is no 100 but a d, i really don't understand how work SPI in flowcode.
If someone can help me or give me an example

thanks
Flouch

Hi
You can see the following link to have ides about SPI..
http://www.matrixmultimedia.com/mmforum ... =7&t=11246

Enamul wrote:Hi
You can see the following link to have ides about SPI..
http://www.matrixmultimedia.com/mmforum ... =7&t=11246

Thanks but this don t help a lot :/

Can you please mention why? In the example flowcode I have used SPI. You can follow that. Or you can post a simple program I will explain..

Here i don t understand why when i send my variable call test,

test=100 why i got in my SPI char send i got a d ?

e/ thanks again

Hi,
You have chosen a chip which don't have SPI in it. It will not work in hardware. you have to choose software SPI. to understand how spi works..you can follow following..
http://www.matrixmultimedia.com/mmforum ... =29&t=8645

ok thanks i have change, but i m always with the same problems, i will read what you have send to me.
But you don't have an example to spi who work ?

if you know a pic who can you SPI, ( i ned SPI to communicate to a rf Transceiver to read different register to know the strength of the signal)

I don't understand what is actually want to mean by your post. If English is not your first language, you can post in you language..I will translate that. I understand so far from your post that you want to use SPI to access an rf device. That's fine..please post the name and information of that device what you have we can make code for you.

My rf is http://www.ti.com/lit/ds/symlink/cc2500.pdf and I must read the register to know the strength of the signal.
and i to have choose my pic yet.
But my question is i don't understand how to use SPI in flowcode as you see when i use SPI to send a byte like 100 flow say me "character sent d".

In french

Je ne comprends pas comment utiliser la liaison SPI dans flowcode ( j'ai compris de manière théorique) car lorsque j'envois par exemple 100 flowocode me dis que j'ai envoyer un d, dans mon projet je dois faire la lecture des différents registres de mon transceiver pour connaitre la force de mon signal radio.
De plus je n'ai pas d'idée sur le pic a choisir

thanks again

Flouch,

I am also currently doing some work with SPI in Flowcode and I think I understand your problem. If you right click on the "SPI Legacy" component and then select "Ext Properties" you will get a dialogue box. In the bottom right of the dialogue box you have the option to send either characters or bytes. I believe that yours will be set to characters. If you select bytes then this should solve your problem.

Regards,
Dick Miller

Oh thanks was that, you saved my day^^ thanks again to you and enamul for this help.
Enamul if you still want to help me to code this i will accept it ( to coding and the choice of the pic)

Sorry.. I could n't get your point so long that you are struggling in simulation. I wasn't thinking at all about simulation and normally for I2C and SPI I never use simulation as without slave device it is meaningless. I will have a look in the datasheet and post program for you.

thanks !

i don't understand how read the different register to know the strength of the signal of this http://www.farnell.com/datasheets/47796.pdf, and i don't understand what initialized in this component

Hi,
I told you to have a look but this datasheet is too long to follow in short time..

Enamul wrote:Hi,
I told you to have a look but this datasheet is too long to follow in short time..

hi,
ok sorry thanks again

hi, Someone have an idea or know a µc to use SPI ?
thanks