https://spaceonearth.org/index.php?action=history&feed=atom&title=Mc-avr-notesMc-avr-notes - Versionsgeschichte2026-05-02T18:30:27ZVersionsgeschichte dieser Seite in SpaceOnEarthMediaWiki 1.38.4https://spaceonearth.org/index.php?title=Mc-avr-notes&diff=163&oldid=prevAxel: 1 Version importiert2022-04-04T14:35:11Z<p>1 Version importiert</p>
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<p><b>Neue Seite</b></p><div>====== I_UfE_AVR ======<br />
<br />
=usbprog=<br />
*USBPROG homepage http://www.embedded-projects.net/usbprog<br />
======installation======<br />
apt-get install libusb libxml libcurl libcurl-dev wxWidgets<br />
*libusb to access the device,<br />
*libxml to parse the firmware descriptions,<br />
*libcurl libcurl-dev to download the firmware,readline toj simplify editing of the command line (in the CLI version),<br />
*wxWidgets, if you want to compile also the GUI version and<br />
<br />
*$ ./configure<br />
*$ make<br />
*$ su<br />
*$ make install<br />
<br />
======Rechte für den Adapter======<br />
if you want to use the usbprog-gui for firmware change as normal user and not as root only on a recent Linux system using udev, you can tell udev do modify permissions accordingly.<br />
<br />
To configure udev, create a file named /etc/udev/rules.d/80-usbprog.rules with the content<br />
Code:<br />
<br />
SYSFS{idVendor}=="03eb", SYSFS{idProduct}=="2104", GROUP="ufe", MODE="0660"<br />
=programmier Tips=<br />
======AXOS geht nicht mehr/ Codelänge--[[User:Axel|ag]] 10:24, 28 April 2009 (UTC)======<br />
wenn man gcc option -O2 wegläßt (bzw -O0 wählt) funktioniert das axos nicht mehr.<br />
<br />
-O2 ergab bei meinem Testprogramm den kürzesten code<br />
======How do I use a #define'd constant in an asm statement?--[[User:Axel|ag]] 15:14, 5 April 2009 (UTC)======<br />
eg works:<br />
asm volatile("sbi 0x18,0x07;");<br />
Which works. When you do the same thing but replace the address of the port by its macro name, like this:<br />
asm volatile("sbi PORTB,0x07;");<br />
you get a compilation error: "Error: constant value required".<br />
<br />
PORTB is a precompiler definition included in the processor specific file included in avr/io.h. <br />
As you may know, the precompiler will not touch strings and PORTB, instead of 0x18, <br />
gets passed to the assembler. One way to avoid this problem is:<br />
<br />
asm volatile("sbi %0, 0x07" : "I" (_SFR_IO_ADDR(PORTB)):);<br />
Note:<br />
For C programs, rather use the standard C bit operators instead, <br />
so the above would be expressed as PORTB |= (1 << 7). <br />
The optimizer will take care to transform this <br />
into a single SBI instruction, assuming the operands allow for this.<br />
<br />
=Ethernet=<br />
*http://www.watterott.com/de/WIZnet-WIZ812MJ-Ethernet-Modul<br />
* ethernet http://www.mikrocontroller.net/articles/ENC28J60#Hardware<br />
=links=<br />
* http://www.myavr.de<br />
* http://www.olimex.com/dev/index.html<br />
* http://www.myplace.nu/avr/<br />
* http://www.avrrepository.com/\n[[category:DWImport]]\n</div>h_>Axel