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Does AtmelIce Hi-Z ISP pins while in debugWire mode?
I'm having issues getting into and out of debugWire mode.  I had big time problems back when I used a Dragon, but I haven't had similar problems after I switched to the...
Sat. Jan 19, 2019 - 08:43 PM
Only SPI modes 0 and 1 supported by Attiny84 USI?
Just now reading more fine print in the ATTiny84 spec.  I think I can only do SPI slave in modes 0 or 1 using the USI module.   Seems that way after reading AVR319 too...
Sat. Jan 12, 2019 - 09:40 PM
Can't use ADC0 if VCC is selected as reference?
Just saw this note in the Attiny84 spec (page 145, section 16.13.1):   Internal voltage reference options may not be used if an external voltage is being applied to the AREF...
Fri. Jan 11, 2019 - 08:28 PM
Program control gets messed up first function return when debugging
Attiny84, Atmel Ice, Studio 7, debugWire   WatchDog timer is NOT enabled.   Changed compile options to -O0 and -g3 (but I tried other -g and it didn't make a difference...
Wed. Jan 9, 2019 - 02:15 PM
ATTiny Output Directly Driving Regulator Enable Pin
Switching regulator modules typically have an enable input with a high resistance internal pullup to Vin.   Vin is much higher than the Attiny Vcc--in my case, up to 25 volts...
Sun. Oct 21, 2018 - 01:17 PM
What happens if an out of range address is used with eeprom_write_byte (and eeprom_read_byte)?
I just discovered a typo in a bootloader application I wrote several years ago.  I haven't seen any problems as a result, but I want to understand the implications better....
Thu. Mar 1, 2018 - 09:58 PM
Studio 6.2 Appears to have wrong addresses for Timer1 regs on Attiny24A/Simulator
I'm debugging an attiny24a using the simulator.   I've made sure the device is set to attiny2a4 and that the compiler is getting invoked with the -mmcu=attiny24a...
Wed. Jan 25, 2017 - 11:10 PM
ATMEL ICE SPI Electrical Characteristics
I'm trying to find the DC characteristics for the SPI output lines SCK and MOSI.  For example, Voh and Vol at some source and sink currents.   Does anyone have a link to...
Tue. Jan 24, 2017 - 12:31 AM
Does Studio 7 Fix "Tool Busy" Issue
I'm still running Studio 6.2.   I've always been sorry when I moved to a newer version of Studio.  Seems there's always a hassle getting going again.   However...
Fri. Jan 6, 2017 - 08:41 PM
Is there something simpler than a PLL?
I'm working on a low latency IR light curtain.   On the receiver side, I need to extract a 4 Khz synchronization pulse from a 10% duty waveform that has lots of phase jitter...
Sun. Jan 1, 2017 - 02:57 PM
Debug programmed code without loading new code.
I'm trying to debug an issue that I'm pretty sure is a result of having a wrong (inconsistent) value of a symbolic constant defined.   The relevant code is:   #define...
Tue. Mar 22, 2016 - 06:52 PM
Big decap, coin cell battery, No BOD = Corrupted Flash?
I have a new design using an ATtiny24.  It's very similar to other designs I've done, just the ATtiny talking to an NRF transceiver.  Those have had hundreds of hours of...
Fri. Feb 19, 2016 - 12:27 AM

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