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Re: [Paparazzi-devel] STM32 and GPS receive

From: Sergey Krukowski
Subject: Re: [Paparazzi-devel] STM32 and GPS receive
Date: Sat, 17 Nov 2012 15:06:02 +0100
User-agent: Opera Mail/11.61 (Win32)

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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