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atmega32u2 does not program via SPI
I have a few mega chips all work fine with AVR studio 6's programing tool with both my STK500 and AVRISP. I need to flash an atmega32u2 and the usb avrisp picks up the chip (...
Friday, 17 January 2020 - 01:19
makeing a level shifter for i2c or forcing 5vttl.
  I have a i2c device ( Nintendo wii -remote ) with this pinout. It is a handle held battery operated device.       I want to interface it with my atmega32u4...
Sunday, 12 January 2020 - 22:29
using USART as SPI on mega32u4
I'm currently using the main SPI for communication to a device but also would like to use a second SPI for communication to a nrf24 module. Looking for a tutorial out there but...
Saturday, 4 January 2020 - 18:28
coupling tiny with an nrf24
I'm looking for the cheapest AVR chip that I can use to talk to an nrf24 (Nordic wireless module) . My guess from searching is going to be a attiny.   requirements. 1 Must...
Friday, 3 January 2020 - 13:17
sanity check on pd7 atmega32u4
I set up my ports like so     DDRD &= ~0x80;// in     DDRD &= ~0x40;// in     DDRD  |= 0x20;// out     ...
Saturday, 14 December 2019 - 23:22
ow to calculate my prescaler.
Given the example.     //Configure timer    TCCR1B = (1<<CS12);    //1:256 prescaler      for(;;){   ...
Monday, 7 October 2019 - 02:17
Need to forceful sign my types all of a sudden?
Using avrstudio 6 and an atmega 32u4 chip   using a wire for debug. I see the 10ms and then the 13ms. //initialize the BB and controller connected. DDRD |= 0x80;PORTD...
Saturday, 21 September 2019 - 15:45
using 3-15v buckboost but requires 5volt to enable?
  Not really AVR related but using this with an AVR project.   I bought a DC-DC 3V-15V to 5V Fixed Output Automatic Buck Boost Step Up Step Down Power modal.   Is...
Saturday, 7 September 2019 - 17:16
powering avr with a range of 3.3 to 7 volts
I have an application where I need to run an atmega32u4 with a range from 3.3 to 7 volts (Allowing for at-least 200ma). Since I need the clock to be 16 I'm a bit concerned...
Sunday, 4 August 2019 - 23:05
SPI revieve flag check.
I'm unclear on something here. In the event the SPI does not receive data from its master, how does one know?   for example if I have this     unsigned char...
Sunday, 28 July 2019 - 21:04
help replacing line with NOP
I have some time sensitive code that I used some debug to make work.  Now I need to remove the debug but I can not find the right NOP substitutes   code DDRB=0xff; int...
Wednesday, 24 July 2019 - 21:56
Thought I knew how SPI worked till I worked on a slave...
I have been working with SPI for a while but honestly never had to write code for a slave. The prediction bytes are confusing me, how does this work? For example, I'm copping a...
Friday, 19 July 2019 - 01:28

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