Hi,

In this case you just use spi_bufTx[0] = 0;

If you wanted e.g. SPI_MODE = 2 and LSBFIRST, you would use

spi_bufTx[0] = 2 | 8;

In other words, the first 2 bits define mode, the 3rd bit defines CS behavior, the 4th defines LSB etc.

CS signal is controlled by operating system. You can only change its behavior by the 3rd bit as mentioned above.

As for the delay function, I have turned it into a separate topic.

Best regards,
Jaroslav

Hi Chris,

thank you for reaching out.

Yes, it is possible to interface with SX1509 via I2C using REXYGEN. However, it will require a bit of hand-coding.

Have a look at function block called REXLANG and its function "OpenI2C" - https://www.rexygen.com/doc/PDF/ENGLISH/BRef_ENG.pdf#page=439

There are also some examples on I2C communication available - "0502 Generic I2C Communication" folder in Examples library (which is part of REXYGEN Studio) - these might help you to see how to implement the I2C communication according to your needs.

Let us know about your progress.

Regards, Tomas

No problem, it is only for some hobby-related stuff so no rush.

Grtz,

Kris

Hi @Scoobsalamander, thanks for info, I will look into it.

Hubert

Thanks for the explanation, now I understand. Nice solution.

Jaroslav

Hi Ivan,

thank you for your question.
Using REXLANG function block you can manage Ethernet communication - see REXLANG documentation - part Communication functions: https://www.rexygen.com/doc/PDF/ENGLISH/BRef_ENG.pdf#page=447

Have a look also at "0504-01 Generic UDP Sender Receiver" example which can help you to start with the implementation.

Regards, Tomas

Hi Paul,

thanks for reaching out. You can now integrate Python scripts within REXYGEN 2.50.10 - for upgrade see post https://forum.rexygen.com/topic/120/installation-of-rexygen-2-50-10-testing

Python block documentaton: https://www.rexygen.com/doc/ENGLISH/MANUALS/BRef/PYTHON.html#x272-27100016

Let us know if it helped.

Regards,
Tomas

Me and my colleague finally implemented some functional solution. We make it public if anyone is interested. Many thanks to Ing. Tomáš Dočekal!
MCP4725_REXDuino_2_50_10.zip

Hi Toni,
FilterIdMask can be used for filtering messages from more devices. In your case, there is only one device, so you can set FilterIdMask as 0xfff. For message decomposing, use the INTSM blocks (www.rexygen.com/doc/ENGLISH/MANUALS/BRef/INTSM.html). The basic example of using INTSM block can be found in this thread: https://forum.rexygen.com/topic/174/reading-and-writing-4-byte-floating-point-from-modbus?_=1609251284153
For decomposing a byte value into bits can be used block BDOCT(www.rexygen.com/doc/ENGLISH/MANUALS/BRef/BDOCT.html).

Cheers,
Jan

@belgacom You are welcome 🙂

@pancirm
Hello Michal,
as far as we know, no one implemented the eBUS in REXYGEN. However, implementation should be possible, for example, via eBUS <-> USB converter and REXLANG or Python programming block.

Cheers,
Jan

@hrabalo Hi,

Thanks for getting back to us. I'm glad it works for you now.

Good luck with your project.

Cheers, Tomas

Hi George,

Thanks for your question. You need to create a kind of state machine which basically does the following (one line = one task period):

Write() - send a read request to the device Read() - save received data and length into a global buffer/variable and distinguish if the received message is complete Retry and repeat Read() if the previously received message was not complete

You will need to introduce a timeout - it can happen that you lost some data so there should be some timeout when you say "Message incomplete, resend the read request".

Cheers,
Tomas

@georgedumitru I think the best documentation is this thread here on the forum. Byte array reading from communication is also discussed there.

Another helpful tool is definitely the example located at C:\Program Files\REX Controls\REXYGEN 2.50.12.14711\Examples\0203_Function_Blocks_REXLANG.