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Re: [Paparazzi-devel] STM32 and GPS receive

From: Christophe De Wagter
Subject: Re: [Paparazzi-devel] STM32 and GPS receive
Date: Mon, 19 Nov 2012 15:43:07 +0100

Thank you for this throughout and interesing research.


On Sat, Nov 17, 2012 at 3:06 PM, Sergey Krukowski <address@hidden> wrote:
I tried any possible power supply configurations to be sure that the internal switching regulator does not affect this. And it is absolutely unambiguouslyfor me - the problem is in STM32F1.
I've also tried LisaM with only a led test programm on it - same result. Ublox5 GPS receiver has noticeable worse receive nearby the board.

I found yet one forum topic about it

The solution could probably be to switch off the HSI after HSE and PLL init. As I see, the HSI is switched on in rcc_clock_setup_in_hse_12mhz_out_72mhz function and stays on from that point.
By adding rcc_osc_off(HSI) at the end of this function could probably help.


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