Some remarks concerning MSP-EXP430F5529, PAN1323ETU & Bluetopia examples

Hardy Griech

Other Parts Discussed in Thread: MSP430F5529, MSP430F5438A, MSP430F5659, MSP430F5438, CC2564

Hi,

after some hardware fiddling with the experimenter board and the BT examples I managed to execute some of the Bluetopia examples. To get a reliable BT connection (SPPDemo) some more hurdles had to be taken:

the PAN1323ETU chip antenna does not work very well with the MSP-EXP430F5529 board. I guess the board layout of the experimenter board does not fit the requirements of the RF module.
After setting RF output to 12dBm, connection over ~20cm (and even more) was reliably possible. With the standard BT setup no connection (even Inquiry) was possible.
sending data from one node to the other (send 999999999) showed hickups in the data transfer. In the worst case data transfer got stuck completely.
Solution was a small modification in HAL_LowPowerMode(): remove "__enable_interrupt();" and replace "LPM3;" with "_bis_SR_register( LPM3_bits | GIE );"

I'm also sure, that BTPS_Delay() has a wrap-around problem (BTPS_GetTickCount() == 0xffffffff, Milliseconds >= 1).

Due to flash size restrictions of the MSP430F5529 most of the LE examples were not linkable. So my request: TI, please replace the MSP430F5529 with a more recent MSP430-USB device. E.g. the MSP430F5659 comes to my mind. Additional advantage (besides flash/RAM size) would be, that this device contains three UARTs allowing BT console without hardware modifications. Or perhaps one of your application engineers could do CDC for BT console...

Hardy

over 11 years ago

0 Sundeep Javvaji over 11 years ago

TI__Mastermind 32615 points

Hi Hardy,

I hope the below post would answer your question

http://e2e.ti.com/support/low_power_rf/f/660/t/302904.aspx?pi267162=1

You can Port the Bluetopia to the MSP430F5659 using the hardware porting guide provided as part of the Bluetopia SDK. Also you can use MSP430F5438A EVM to run all the demos provided as part of the SDK

0 Hardy Griech over 11 years ago in reply to Sundeep Javvaji

Expert 2870 points

Automatic reply? CnP?

No, it did not answer my questions/remarks.

0 Sundeep Javvaji over 11 years ago in reply to Hardy Griech

TI__Mastermind 32615 points

Hello,

My bad. I wanted to say MSP430F5529 does support only SPPLEDemo_Lite. You have to use the MSP430F5438 board for the other demos. And Bluetopia can be ported to other MSP430’s

Anyway, Thank you very much for your valuable inputs.

0 Hardy Griech over 11 years ago in reply to Sundeep Javvaji

Expert 2870 points

Unfortunately you still did not read: SPPDemo works on the MSP430F5529 too, not just on the 5438A. Try on your own.

Hint: remove the accelerator chip and connect some serial/USB connector. You also have to modify HAL.c.

So: SPPDemo is working - believe me.

Open issues:

- why do I have to tune output power to 4dBm or more to get an RF connection?

- BTPS_Delay() has a bug

Request:

- please update the USB experimenter board with a more powerful MSP430

0 Hardy Griech over 11 years ago in reply to Hardy Griech

Expert 2870 points

Shame on me: I used the patch files for the CC256xB - unfortunately the PAN1323ETU uses the CC2564 without B.

Changing this makes the radio work without tuning RF output power.

But it also leads to more code size. For the SPPLEDemo_Lite I had to use optimization and some more tricks to make it fit.

SPPDemo is still compiling/linking/working.

Hardy

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Some remarks concerning MSP-EXP430F5529, PAN1323ETU & Bluetopia examples