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mega32u2 max spi does not look right.
    I set my spi to max but not achieving what I was hoping for.       SPCR = (1<<MSTR)|(1<<SPR1)|(0<<SPR0)|(0<<SPR1)|(0<...
Wednesday, 8 April 2020 - 00:39
Are the atmega16u2 and at90usb162 the same?
What is the difference in these? I see the atmega16u2 shows USB (1, Full Speed) and the at90usb162 (1, none) but the foot prints match.  Looks like the atmega16u2 's are...
Thursday, 2 April 2020 - 20:18
Is there a way to set data based on PIN macros.
I want to make a device that can have dual USB descriptors. All the USB data needs to be done prior to run time. I do use a bootloader (not sure that helps) but can not think of...
Friday, 27 March 2020 - 22:43
migrate mega8 to attiny85
I'm having a hard time tracking down a few registers.   boot_rww_enable(); complains about rwwsre -> I believe this is right SPMCSR | CTPB; IVCE and IVSEL is undeclared...
Sunday, 8 March 2020 - 15:02
i2c with atmega (new to i2c)
I'm familiar a bit with i2c but I'm not sure why I do not see data. I want to communicate with a thing called the wii-mote. It uses  i2c to talk to its peripherals. I'm...
Tuesday, 3 March 2020 - 23:38
attiny without micronucleus ?
micronucleus is a good option for a v-usb bootloader but a bad option for a consumer. Why is it needed, can't one use a modified bootloadhid? I tried a few attempts at it with no...
Sunday, 23 February 2020 - 23:35
sleep_cpu but no wake?
I never used the sleep command before and was wondering what would cause it to not wake. I tried enabling global ints and disabling the WT and ( if any of that matters) but...
Saturday, 22 February 2020 - 22:42
attiny85 with HVPP
I need to use my SPI and PB5 (along with PB3,4)  for my project. These are all dedicated pins and must be available. I also need to developed and that rules out SPI since...
Sunday, 26 January 2020 - 00:56
tiny with fdu?
I use my atmegau2 and u4 with this project. http://dfu-programmer.github.io/   I'd like to do the same thing with an attiny85 if possible. The chip is not listed in the fdu...
Saturday, 25 January 2020 - 15:43
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

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