Hi Claudius, I'm writing to ask if you followed your intention to write a MAC driver for the STM32.
Browsing through the forums I can see a lot of new projects based on this MCU but everybody complains about badly written drivers.. Bye, Andrea From: Claudius Zingerli <[email protected]> > To: Mailing list for lwIP users <[email protected]> > Cc: > Date: Mon, 01 Jul 2013 09:56:08 +0200 > Subject: Re: [lwip-users] Low Iperf performance of lwip 1.4.1 on STM32 and > FreeRTOS > Hi ella and all, > > Some progress here: I receive a lot of CRC & Align errors (MMC counters of > STM32). At least there is /some/ correlation between these errors and LWIP > behaving strangely (if there is an increase in the MMC counters, LwIP gets > into trouble, if there is none, LwIP mostly works fine). This may further > be related to the usage of RMII between the MAC and PHY and creating the > RMII-Clock with the STM32-PLL. Datasheet jitter and precision should be OK > for the PHY, but this might not be the cleanest solution (There is some > hint in the datasheet that good guys should source the RMII clock by > bypassing the PLL). So in a next step, I'm going to use a dedicated 50MHz > oscillator to clock the PHY and MCU. > On the software-side: An own implementation of the MAC driver is on the > way. Could probably be open sourced if there is some interest. > > Claudius > >
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