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by mabl
Wed Oct 19, 2011 9:30 pm
Forum: Development and Feedback
Topic: Another interesting Discovery kit from ST
Replies: 36
Views: 12572

Re: Another interesting Discovery kit from ST

Today I also got my F4 discovery board. Will see how to program it under Linux. At the moment it looks like it still has some problems: https://github.com/texane/stlink/issues/10
by mabl
Wed Oct 19, 2011 8:29 am
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

Hi Giovanni, i think it's a great idea to move it into os/various. I also found something which might be of interest to you: http://lwip.wikia.com/wiki/Writing_a_device_driver There is also a chapter about zero copy implementations. What's about the STM32 MAC driver? Do you have any timetable on tha...
by mabl
Wed Oct 19, 2011 7:34 am
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

Hello Brian, Interesting, I did not notice that, as I assumed that this would be done by an upper layer, specifically the lwipthread.c adapter code. And indeed there is the following code in it: while (TRUE) { eventmask_t mask = chEvtWaitAny(ALL_EVENTS); if (mask & PERIODIC_TIMER_ID) (void) macP...
by mabl
Tue Oct 11, 2011 12:23 pm
Forum: General Support
Topic: NUC120 port CM0 -> error compiling LPC11xx CM0 demo
Replies: 9
Views: 4445

Re: NUC120 port CM0 -> error compiling LPC11xx CM0 demo

Use Linux :D There are beautiful crosscompiler scripts. No, honestly - I will never understand why programmers use Windows with GNU tools. It's just so limited.

(Sorry, I could really not resist... - I mean no offense)
by mabl
Mon Oct 10, 2011 3:34 pm
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

I wished you'd have your proper code ready yet... I ran into a strange problem and wonder if anybody has experienced similar problems: I have a SNTP server running which queries the time from my laptop every 5 seconds or so. Everything seems to work fine but sometimes the MAC does not send the outgo...
by mabl
Sun Oct 09, 2011 3:14 pm
Forum: Development and Feedback
Topic: The RTC driver topic
Replies: 228
Views: 56060

Re: RTC driver

Hey, thanks for the RTC driver. Works fine for me :) Just some curious questions though: Couldn't it happen that seconds wrap just after the ms are read? Also, the same problem applies for the DIVH register. Could rtc_lld_get_time be adapted to handle such problems like void rtc_lld_get_time(RTCDriv...
by mabl
Fri Oct 07, 2011 9:06 am
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

I updated the ethernet wrapper to check for link state. It's an ugly hack and somewhen it should really be replaced by a proper ChibiOS driver. (I saw that there is some work in the repository already). This driver should work with the most recent ChibiOS trunk and was tested with revision 3425.
by mabl
Thu Oct 06, 2011 10:05 pm
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

Hey santatanta, I was curious how ST does it and basically they do the same thing: diff -C 3 -b -w -B -E -d -t -r -N -- lwip-1.3.1/src/core/ipv4/icmp.c lwip-1.3.1-st/src/core/ipv4/icmp.c *** lwip-1.3.1/src/core/ipv4/icmp.c Tue Aug 18 14:54:17 2009 --- lwip-1.3.1-st/src/core/ipv4/icmp.c Fri Nov 20 17...
by mabl
Tue Oct 04, 2011 9:12 am
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

According to the STM32 manual: Note that: for ICMP-over-IPv4 packets, the checksum field in the ICMP packet must always be 0x0000 in both modes, because pseudo-headers are not defined for such packets. If it does not equal 0x0000, an incorrect checksum may be inserted into the packet. Setting the ch...
by mabl
Tue Oct 04, 2011 7:08 am
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 97904

Re: STM32 Ethernet Demo

Hellp santatanta, I made a quick test as well, and you are right - the ICMP checksum field is zero (see attachment). I wonder why you don't have this problem; doesn't your switch/network card care about the wrong checksum? The ICMP checksum is above the network layer of switch/network card and there...

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