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floating point math vs. integer math
Hello,   I am interfacing by i2S an ATMEGA1284P to a specialized chip. I read an internal register of the chip into an int16_t variable and it is an ADC output...
Friday, 17 July 2020 - 01:53
how to declare a buffer of 256 byte with UART Peter Fleury's libraries?
hello,   I am using the Peter Fleury's libraries and I need a circular buffer of 256 bytes.   From the Peter Fleury's uart.h I have /** Size of the circular...
Thursday, 28 March 2019 - 15:50
ATMEGA1284P - use of TX1 pin as input pin
Hi everybody,   I have a trouble when I try to use the TX1 as an input pin. I burn the gate.    I isolate a very simple code where I collect what I am doing in...
Saturday, 19 January 2019 - 18:19
Waveshare AVRISP XPII <> Seeed AVRISP V2.0
    Hello,   I am using with satisfaction the Waveshare AVRISP XPII. It is loaded with its driver and it is listed as an ATMEL device.   To have a spare...
Sunday, 2 December 2018 - 15:25
ATMEGA1284 + 3 slaves i2C and SMbus together. Pull-up troubles.
Hello,   just coming from a long trial trying to connect at the same i2C bus one EMC2305 fan controller and two AD5272. The MCU is an ATMEGA1284.   EM2305 is 3V3 powered...
Monday, 15 January 2018 - 14:44
SMbus managed by i2C (Peter Fleury) - ATMEGA1284 - READ BYTE trouble
Hi all,   I have a strange behaviour in my application: ATMEGA 1284 + EMC 2305 fan controller.   I am using the i2C as TWI hardware interface (twimaster.c) coming...
Friday, 5 January 2018 - 15:14
DALLAS 1-wire and PWM by OC2B
Hi all,   I have a trouble with a 1-wire setup on an ATMEGA1284 where I would like to use PWM. I have just isolated the trouble but I would like to understand.   To...
Wednesday, 27 December 2017 - 09:11
ATMEGA 1284 & AVR DRAGON - detected voltage below 1.7V
Hello, after the holidays I connected again the AVR Dragon to my computer. The computer was upgraded to Windows 10 before the holidays. I downloaded with success Atmel Studio 7.0...
Thursday, 25 August 2016 - 20:00
switch case trouble
Hello everybody.   I am in trouble with a "simple" function.   void print_Input(uint8_t Input2Print) {     lcd_gotoxy(7,1);     switch (...
Friday, 10 July 2015 - 15:49
DRAGON debugWire & ISP with MISO&MOSI used for other purposes
Hello,   I am not able to use the ISP properly. I connected the MISO, MOSI and SCK from the DRAGON board directly to the same pins of an ATMEGA328P. And these pins on the...
Monday, 22 June 2015 - 18:55
SOLVED: ATmega328P - timer 8 times slower
Hello,   I have a trouble with the timers of an ATmega 328P.   Everything works but 8 times slower. Where can I look for the mistake?   In project>properties>...
Thursday, 11 June 2015 - 08:07
AVR DRAGON DEAD - MISO PIN always Hight
Hello,   following this thread https://www.avrfreaks.net/comment... I discovered I have the MISO pin always high. So the DRAGON is dead.   To avoid it happens again,...
Wednesday, 10 June 2015 - 13:22

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