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USB CDC overwrite PC com port buffer
Hi, I'm using the USB CDC stack on a 192A3U device and it works normally OK. But if the com port buffer on the PC reach app 12KB the buffer is corrupted. The buffer is set to 32KB...
Thursday, 6 September 2012 - 09:03
Temperature measurement inaccurate
Hi, I have struggled for a long time to get the internal temperature accurate. The setup is: PORTB.PIN0CTRL = PORT_ISC_INPUT_DISABLE_gc; ADCB.CTRLB = ADC_RESOLUTION_12BIT_gc | (...
Tuesday, 12 June 2012 - 09:28
Petit ffs writing problem
Hello, I have implemented standard ffs and it is running OK but takes to much RAM space. So I'm trying Petit ffs. It is also working OK except for pf_write which gives disk error...
Friday, 17 February 2012 - 08:36
USB bootolader, small size
Hi, I am quit experienced with XMega but not to USB and I'm trying to make a bootloader based on CDC (virtual com port) working on the USB2K5 project which I downloaded. It seems...
Tuesday, 3 January 2012 - 09:07
Writing user signature row
Hello, I'm trying to write user signature row on a Xmega192A3 using the SP command but it fails. Reading is OK. Code: usrin = 0x3031; SP_WaitForSPM(); SP_LoadFlashWord...
Monday, 5 December 2011 - 07:17
Bootloader - USB
Hi, I am struggeling with getting a bootloader running on USB to fit into the 8K bootsection on a 192A3U. The USB is based on the USB-CDC (virtual serial port) in the ASF example...
Wednesday, 28 September 2011 - 07:05
Device type in C-code
I need to check for device type during compilation in my c-file to compile program for XMEGA192A3 or 102A3U. #ifdef DEVICE = XMEGA192A3U ?????? code #endif What is the definition...
Tuesday, 20 September 2011 - 12:56
Interrupt
I run a radio stack (Gazell from Nordic Semiconductor) where I need to disable and enable port interrupt on timer interrupt. It seems that I lost interrupt by using: PORTD....
Wednesday, 20 July 2011 - 07:35
Xmega 32A4 and ADC
Hello, I'm struggeling with the ADC on my 32A4 device. The code below describes the setup, function called each ms and the interrupts. I tries to convert 7 input at portA. A 2.5V...
Monday, 27 June 2011 - 08:55
XMEGA AD converter
Hello I tries to measure the internal temperature in a Xmega32A4 device bu get around 90 degC. I have went through all documentation and set up the AD as described. It also seems...
Monday, 6 June 2011 - 10:12
SPI on XMEGA
Hello, I have worked with AVR for may years but are new to SPI on Xmega. The prolem is that I dont have any signal on the SCK pin. My setup is // Set up SPI SPID.CTRL |=...
Wednesday, 1 June 2011 - 11:28
Watch error
In Avrstudio 5.0. Defining a variable a unsigned short gives fault in teh Watch display. Function: char CheckTXBuffer(unsigned short bytetosend) { Watch 1: bytetosend get:...
Friday, 29 April 2011 - 07:11

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