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UC3 programming in Assembly language
The UC3 series are excellent products if you know about Assebly language. I have a load of driver code etc, but no website. Is it anyone out there that would like to open an "svn...
Saturday, 23 March 2013 - 00:30
NPCS pin missing from include file (SPI)
Possible error in UC3 framework AT32UC3A-1.4.0 and older: file: avr32\uc3a0512.h definition for AVR32_SPI1_NPCS_3_0_PIN is missing although there should be four such pins on the...
Friday, 17 December 2010 - 21:13
Linux clock frequency reference
What is the frequency reference for the Linux clock, what crystal and oscillator is the source for the system clock on the NGW100 board? i.e "date" command
Friday, 3 December 2010 - 21:18
Benchmark: UC3 startup time
I am working on a low power design and did some test with the EVK1100 kit. Here are some results: Kit switched on, init GPIO (light a LED): 1 ms Kit on, init osc0 at 12 MHz, then...
Thursday, 8 July 2010 - 17:45
MOVHI instruction, error in arch manual??
In the architecture manual the instruction MOVHI is listed in the index. It is intended to put an immediate value in the high part of the destination register. But there's another...
Saturday, 27 March 2010 - 22:58
Possible damage to reset pin on UC3
Anybody that knows the details of the circuitry inside the UC3A0512 seen from the reset pin? I managed to put 12 volt there, without current limit. But the UC3 still works, even...
Wednesday, 6 January 2010 - 23:24
MACB PHY interrupt on EVK1100
What is the PHY interrupt in the MACB driver used for? I cannot find any specific processing in the vPHY_ISR(void) handler in the MACB driver code, except for the reading of the...
Wednesday, 22 July 2009 - 15:10
Optimizing atmega SPI for speed
I am working on an application where two ATMega324P processors will exchange data over SPI bus by connecting the SPI lines directly together. But after reading the data sheet and...
Friday, 19 June 2009 - 18:12
UC3 Capture timer bitstream trigger
I am using EVK1100 with UC3A and GCC compiler. The app. is measuring a bitstream at the TIOA-pin, storing the RA-reg values in a table. The capture timer is using two interrupt...
Sunday, 23 March 2008 - 19:22
Interpreting string commands
Using EVK1100 with the UC3A processor, would the following code be efficient for decoding text: union cmd_link_t { char input[4]; // Argument storage unsigned output; //...
Tuesday, 11 March 2008 - 19:09
UC3 SSC module clock source
What is the MCK clock source for the SSC (serial controller), is it the same as the CPU? Is it possible to connect the SSC (MCK) clock to one of the generic clock generator...
Wednesday, 20 February 2008 - 05:41
SPI under Linux
Hi. Im running Linux 2.6.18 on a STK1000. I try to open the /dev/spi2 in order to communicate with outside devices. The /dev/spi0..spi3 is visible in the filesystem, but they will...
Tuesday, 19 June 2007 - 08:19