Surprised to see Unix BSD socket() and select() in CC3000 sample code.

spixycat

Intellectual 300 points

Hi All,

on the http://processors.wiki.ti.com/index.php/CC3000_Wi-Fi_Downloads

page there is a project called

CC3000+FRAM Home Automation Application

and in the source code main.c is see (yes I quite happy seeing that) Unix BSD like kernel call

select()

and similar interface to socket library.

My question is: is this may be a application that uses RTOS or has this always been available? I never seen these Unix style calls in MSP430 code. And this might be a very good reason to move over to MSP430 + CC3000. The only sad news is that only 4 socket file descriptors can be used.

Thanks a lot in advantage.

André

over 13 years ago

0 Alon Srednizki over 13 years ago

TI__Mastermind 18455 points

Hi Andre,

The CC3000 driver was written to be fully BSD socket complaint.
It doesn't metter which MCU you are using.
TI is providing it with reference code for MSP430 and Stellaris M4.

For more details you can refer to: http://processors.wiki.ti.com/index.php/CC3000_Wi-Fi_for_MCU amd
http://processors.wiki.ti.com/index.php/CC3000_Host_Programming_Guide

Thanks,
Alon.S

0 spixycat over 13 years ago in reply to Alon Srednizki

Intellectual 300 points

Hi Alon,

Thanks for the answer. That is nice to have the good old BSD interface.

Is it correct that up to 4 sockets are supported by the CC3000?

Is there a semaphore mechanism available in the MSP430 family processors? The mechanism that the processor waits for an event that is generated through an interrupt which signals the waiting process to continue? I guess so otherwise it is (I think) impossible to implement the BSD select() call.

Which socket implementation is used? are may be Streams packet network layer used?

Are there other SPI devices supported through sockets?

Is it possible to write your own driver for specific SPI devices so that it can be accessed via sockets()?

Would be nice to have socket interface to I2C devices.

where is the documentation of the systems calls ie the man pages?

Thanks!

0 Alon Srednizki over 13 years ago in reply to spixycat

TI__Mastermind 18455 points

Yes, the CC3000 supports up to 4 socket.

There is no semaphore mechanism, the driver currently supports single threaded access. The API is synchronic, blocking API.

The CC3000 support TCP or UDP sockets.

This is a CC3000 support forum, I not familiar with other SPI connectivity devices.

TI provides SPI driver reference code for MSP430 & Stellaris M4, of course that you can write your own SPI driver for any MCU you are working with.

You can find all the required information in the CC3000 porting guide: http://processors.wiki.ti.com/index.php/CC3000_Host_Driver_Porting_Guide

Thanks,
Alon.S

Wi-Fi

Wi-Fi forum

Surprised to see Unix BSD socket() and select() in CC3000 sample code.