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Proper use of the TOV1 flag
As I wanted a long time period I thought I would just use the TOV1 flag.  Couldn't get it to work so searched this site and the first hit was mine, 10 years ago and with no...
Mon. Aug 17, 2015 - 08:27 AM
RFM22B and packet length
I have got the EWS_RFM22B_CHAT_EXAMPLE working and spent hours reading the RFM22B and Silicon Labs AN440.pdf datasheets. I have a test link passing a single byte command back and...
Tue. May 20, 2014 - 09:53 PM
RFM22B reserved registers ATmega88
Using RFM22B revison 3 modules and an ATmega88, I managed to get the example code in EWS_RFM22B_CHAT_EXAMPLE to work. The following were in the EWS_RFM22B_CHAT_EXAMPLE code....
Fri. May 16, 2014 - 01:17 AM
USB programming with a 3V3 peripheral (RFM22B)
I built up this project http://www.ulrichradig.de/ and RFM22 und ein ATmega and after some time trying to get them to work I suddenly realised a potential gotcha. Even though I am...
Wed. Apr 16, 2014 - 09:08 PM
Strange ADC Aref behaviour
... well strange to me. I built an external precision 5V reference (temperature-compensated) using a LM336-5. This reference was running off its own power source, because of the...
Tue. Feb 18, 2014 - 08:01 PM
ISR processing time [Solved]
Toggling an LED in a while loop takes about 2.5uS with a 3.6864MHz xtal. Using the following code: #include #include // F_CPU defined in the makefile as 3.6864MHz #define...
Tue. Nov 8, 2011 - 08:24 AM
PWM ATmega88 Timer0 problem [Solved?]
On the ATmega88 I can get pulse length (duty cycle) controlled by OCR0A: #include int main(void) { DDRD |= (1<<PD6); PORTD |= (1<<PD6); // 8 bit timer...
Sun. Jan 23, 2011 - 12:40 AM
SMTP using uIP on AVR
I have a little webserver running on an ATmega32 and I'd really like to be able to send email when there are fault conditions. But, I am having some difficulties in getting the...
Thu. May 28, 2009 - 07:46 AM
MicroWebServer, with SMTP email client
As file upload does not appear to work in the Projects area here is the .zip file of the project. Original source code is at: http://en.klinkerstein.m-faq.de/index.php/...
Tue. May 19, 2009 - 10:48 AM
[Solved] itoa() and HTML
WinAVR and using itoa() to insert int values into a table column in a HTML file in program memory in an ATmega32 webserver application. Example 1: adc_value = 12345; //...
Thu. May 7, 2009 - 10:51 AM
[Solved] PROGMEM behaviour?
I have been working with some code that uses PROGMEM to save port state, uWebServer by Simon Kueppers, and noticed behaviour that I do not understand. If I change and re-compile...
Tue. Apr 14, 2009 - 10:01 AM
[Solved] Tiny-FatFS, f_unlink problem
I have noticed that in my implementation of Tiny-FatFS that one can not delete files on a MMC card, using the PC. So, I thought I'd make a small utility, running on an ATmega32,...
Thu. Nov 13, 2008 - 01:18 AM

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