Forgot external 32KHz cristal - Can I have simpliciTI and SPI working ?

Jorge Miguel

Expert 1020 points

Other Parts Discussed in Thread: CC430F5137, SIMPLICITI

Hello,

I designed a board with a CC430F5137 and I mounted only a 26MHz external oscilator. I did not mount the external 32KHz.

Now, when I use the radio I dont have SPI communication and the other way around.

Is there any way I can solve this?

Many thanks in advance,

Jorge

0 TER over 9 years ago

Could you please elaborate what you experience with "Now, when I use the radio I dont have SPI communication and the other way around."?

0 Jorge Miguel over 9 years ago in reply to TER

Expert 1020 points

Hi,

Many thanks for your reply.

I managed to source ACLK with the internal 32KHz oscillator and it is fine.

However it wasn't the problem. The problem is that I use CC11190 amplifier and I control it with signals:

GDO0 - PA_EN

GDO1 - LNA_EN

GDO2 - HGM

To begin with, I control these signals as GPIOs and later on I will set then as GDOs.

Well, now as a GPIO, it turns out that simpliciTI uses GDO1 as RRSI indicator and it fights my GPIO and homehow it affects my SPI device.

How can I modify simpliciTI so that it does not change any GDO outputs or any other output?

Regards,

Jorge

0 Siri over 9 years ago in reply to Jorge Miguel

Hi Jorge

Siri

Sub-1 GHz forum