AVR Freaks

No,  I have not looked at your datasheet.

You can normally turn pullups on or off via the VPORTx register.   Just like on an regular AVR PORTx.

Since you have a real chip and a real AS7 installation,  you can inspect the PORTx register structure as you manipulate individual VPORTx registers.

I suppose that I could do it in the Simulator since I do not have your hardware.

OTOH,   I doubt if you would believe the Simulator (even though it is supposed to be built from the Silicon design files)

You can do the same exercise on an Xmega.   i.e. manipulating OUT register or the steering registers.

Has anyone built an 8kB application yet?

And observed how long it takes for UPDI to upload the Flash from the ELF file compared to an XMINI with debugWIRE.

David.

I just checked in the simulator and:

    VPORTB_DIR = 0x00;
    VPORTB_OUT = 0xFF;

 

don't set the pull up bit, so I guess it's a no go (as expected).

So I tried this :

uint8_t *temp=(uint8_t *)0x430 ;

for (uint8_t n=0;n<8;n++)
  *temp++=0x08;

  And it does the correct job , but the code is NOT as expected!!!

    for (uint8_t n=0;n<8;n++){
		*temp++=0x08;
  5c:	88 e0       	ldi	r24, 0x08	; 8
  5e:	80 93 30 04 	sts	0x0430, r24	; 0x800430 <__TEXT_REGION_LENGTH__+0x700430>
  62:	80 93 31 04 	sts	0x0431, r24	; 0x800431 <__TEXT_REGION_LENGTH__+0x700431>
  66:	80 93 32 04 	sts	0x0432, r24	; 0x800432 <__TEXT_REGION_LENGTH__+0x700432>
  6a:	80 93 33 04 	sts	0x0433, r24	; 0x800433 <__TEXT_REGION_LENGTH__+0x700433>
  6e:	80 93 34 04 	sts	0x0434, r24	; 0x800434 <__TEXT_REGION_LENGTH__+0x700434>
  72:	80 93 35 04 	sts	0x0435, r24	; 0x800435 <__TEXT_REGION_LENGTH__+0x700435>
  76:	80 93 36 04 	sts	0x0436, r24	; 0x800436 <__TEXT_REGION_LENGTH__+0x700436>
  7a:	80 93 37 04 	sts	0x0437, r24	; 0x800437 <__TEXT_REGION_LENGTH__+0x700437>

And this is even with -Os  stupid compiler! , that is code I would expect for -O3 , 34 bytes, for what could be done in 4 bytes on a tiny  (and with full bit control).

How to write the code so it make a loop? 

And here is a simple ASM code that do the same as a tiny (if that is the only bit set in PINnCTRL):

    ldi ZH,high(0x0430)
    ldi ZL,low(0x0430)
    ldi r24,0x55 // mask for the 8 bits
L0: ldi r25,0 // clr value
    lsr r24
    brcc L1
    ldi r25,0x08 //set value
L1: st z+,r25
    cpi ZL,low(0x0430+8)
    brne L0

The VPORT's are fixed on this chip, (at least that is the way the I read the manual).

And with all this, and if the plan is to make more of this kind of "xtiny's" I really suggest that they get's there own forum.

The confusion will go both ways, when there start to come good things for the 817, "new" people can't get it to work on a tiny85 etc.  

Are there any one that know how good the temperature sensor is ? (I can't find anything in the datasheet)

And it has arrived :)

Problem is, I haven't even installed the new Atmel Studio version. What should I write for the ATtiny817? I have to think about it.

If you connect to the CDC (mEDBG Virtual Com Port) with 9600 baudrate you should get a text string every time the button is pressed. 

It's a standard CDC port, but the drivers are installed when installing Atmel Studio. (C:\Program Files (x86)\Atmel\Studio\Drivers\inf\atmel_devices_cdc if you need to do a manual install)

Does it show up in the device manager at all ? 

Keep the resistors in. As long as you don't connect to the CDC port on the PC, DTR won't be set which will make the debugger stay away from the pins.

You're right. More of these chips are coming out very soon. They should have a separate forum or they should be on Xmega thread at least. Very confusing huh... 

These are indeed similar with the Xmega.

Timers A and B are both 16-bit Timers

Timer D is 12 bit Timer

The difference between TCA and TCB is that the TCB can use an external clock source.

More specific information on datasheet chapters 20-22 for each Timer/Counter

If it's true that there come more of this kind of "xtiny" parts, especial small Atmel (Microchip) please please make the 32 registers memory mapped again.

I don't care where and if it take 3 or 4 clk.

Now after 20 years we finally have AVR's where everything are memory mapped so there can be made general routines, but no the register aren't   :(

TinyX should work... 

Seems no one told Digikey, as they now show stocks (46) of XPRO  :)