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SPI - RTC stupid question about rx byte
Hi all, I'm writing a interface driver for RTC epson rx4045S. I'm using an ATMEGA64 and I have a strange behaviour: i could not read data from RTC. Sniffing spi with an...
Monday, 4 October 2010 - 20:42
Range amplifier circuit : need some ideas
Hi all! I'm using a PT1000 for reading temperature between -20º (922ohm) and +50º (1194ohm) celsius. I'm using a circuit able to drive a current of 1mA, so reading differential...
Friday, 16 July 2010 - 08:48
USB HID implementation Visual Basic code - Where ?
Hi all, I'm a usb noob and I'd like to develop a visualbasic (2008 express) application able to interoperate with AT90USBKEY (as starting point). I found the cpp code for atmel...
Wednesday, 27 January 2010 - 14:35
Hex file generation. How to force 16 byte alignment ?
I'd trying to develop a simple bootloader that not require a custom program on 'serverside'. So, I'm coding a fw (smaller than 512words) able to manage hex file (hex file are...
Wednesday, 24 June 2009 - 14:26
Megaload bootloader GCC port - here is the code -
I made a port of megaload bootloader coded by Sylvain Bissonnette for ICCAVR (imagecraft) to GCC. Link for original files is: http://www.microsyl.com/ In order to use megaload it'...
Monday, 8 June 2009 - 16:58
Calling ASM function from C (GCC)
I'm trying to make a call to an asm label from C file. ASM function does not require arguments and return nothing. Let's suppose this .c file: #include extern void asmexample(...
Monday, 8 June 2009 - 14:26
Miniaturized pcb transformer 230V - low volt, low current
Hi all! I'm searching for a pcb mount miniaturized transformer. I should convert 230V to 5V (12V,9V, or 6V are ok). Current is less that 50mA Any suggestion ? Thanks, regards!
Wednesday, 3 June 2009 - 08:56
Can't sync if ckdiv8 - SPI PROGRAMMING ALGORITHM
New AVR device (in this case I'm referring to 162) comes out from Atmel with fuse bit: CKDIV8 ENABLE internal RC osc ENABLE no brownout ecc. ecc. I made a piece of sw able to...
Monday, 4 May 2009 - 12:52
USB gamepad. How to start ?
Let's suppose you'd like to start a new project: PS3 USB GAMEPAD. Suppose to use Atmel's USB framework.. wich usb class ? How I could tell to PS3 that (for example) square button...
Saturday, 11 October 2008 - 11:15
avarice - insight problem
Hi all, I have a problem with avarice and insight. After having compiled a simple program, I try to debug it... Steps are as follow: avarice --program --file main.elf --part...
Friday, 26 September 2008 - 16:41
AVR, Netbeans, eclipse
Hi all, I found here: http://www.cs.hut.fi/Studies/T-106.530/2006/eclipse-avr.pdf a document on how to use eclipse in developing AVR SW. I found here: [url] http://www.ethernut.de...
Thursday, 7 August 2008 - 10:19
GCC : warning directive doesn't work
Hi all, I'm trying to understand why this preprocessor directive: #warning "hello" #warning hello does not produce any output... #error "hello" works well.. Any ideas? How I could...
Tuesday, 1 July 2008 - 19:09