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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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 Posted: Mon Apr 28, 2014 3:51 pm Post subject: |
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that code writes to other regs as well;
00000031 OUT 0x13,R30 Out to I/O location
00000032 OUT 0x14,R30 Out to I/O location
00000033 OUT 0x15,R30 Out to I/O location
which are :
GPIOR2 = $15
GPIOR1 = $14
GPIOR0 = $13
beside that, it clears regs, also clears the memory and EECR and MCUCR
you could try to reset these. it should not make any difference.
bascom also disables the WD and WD flag (after saving this flag). but besides that, i see nothing that explains any difference.
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Meister
Joined: 27 May 2010
Posts: 319
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| Posted: Mon Apr 28, 2014 4:50 pm Post subject: |
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Same. Here additionally I set the PortsA.3,4 to high. Always 29Hz square wave output.
The level depends on connecting the LA or not - but always oscillating.
| Code: | $regfile = "attiny841.dat"
$crystal = 8000000
$hwstack = 40
$swstack = 16
$framesize = 32
$noramclear
Disable Interrupts
Eecr = 0
Mcucr = 0
GPIOR2 = $15
GPIOR1 = $14
Gpior0 = $13
'Puea = 0
Ddra = &B1111_1111
Porta.3 = 1
Porta.4 = 1
End |
Something fundamental must be wrong.
I just realized that the 29Hz chopping obtained with the Bascom code persists after programming the functioning C-program.
Recycling power to the chip restores the correct functioning of the C-Code after having flashed the Bascom code before.
That is not the case for the Bascom Code. There recycling power has no effect at all.
Resetting from the Studio does not help!!!!Power must be recycled.
So this observation must lead to find the problem?
Regards, Meister |
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Mon Apr 28, 2014 7:10 pm Post subject: |
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it is not :
GPIOR2 = $15
GPIOR1 = $14
Gpior0 = $13
but
GPIOR2 = 0
GPIOR1 = 0
Gpior0 = 0
the $13-$15 are the addresses.
you can best post a complete small project with the obj file included. if you compile the project in c:\temp or something like that i can watch/simulate it with studio too.
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Mon Apr 28, 2014 7:15 pm Post subject: |
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you could simply write some code that outputs all IO registers and their value. that should show the difference !
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Meister
Joined: 27 May 2010
Posts: 319
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| Posted: Mon Apr 28, 2014 7:35 pm Post subject: |
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I have changed the Gpior settings according to your post. Doesn't make any difference. 29Hz square wave on PA3,4.
That very short Bascom program from my previous post is that ok? It's just setting registers.
The obj. file is attached.
If you would prefer a different program, please propose some changes. It's easy for me to test.
Since this behaviour is that odd, I was thinking chip is kaputt. But I always can flash a C-program
that sets two timers with five outputs for complemetary pulse and that works as it should after cycling power if a Bascom program had been flashed before.
I did one more check: I changed the clkdiv fuse to run at 1Mhz. The frequency of the strange 29Hz pulses stays the same.
If I unplug both the programmer and the LA, there is still the 29Hz square wave (seen on osci), but as said before, the amplitudes are affected by the load due the LA.
Regards, Meister |
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Meister
Joined: 27 May 2010
Posts: 319
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| Posted: Mon Apr 28, 2014 7:42 pm Post subject: |
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| Quote: | | outputs all IO registers |
What do you mean by "all"? Just the used ones?
Output to where? Printing?
Regards, Meister |
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Mon Apr 28, 2014 7:45 pm Post subject: |
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it was not to be expected that the gpior regs would be the problem.
I need an obj of the c program. with the c code as well.
but when the problem arises after you load the bascom program, simply wrote a dump program that dumps all io regs address with content.
do the same for the c and compare the result. some will be different like SPL SPH and others would be more interesting.
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Mon Apr 28, 2014 7:54 pm Post subject: |
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dim b as Byte
for b = 32 to 255 '32 will return IO register 0 address
print hex(b) ; " " ; inp(b)
next
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Meister
Joined: 27 May 2010
Posts: 319
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| Posted: Mon Apr 28, 2014 8:05 pm Post subject: |
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Put the print on top and after setting registers. Hope it's right.
| Code: | $regfile = "attiny841.dat"
$crystal = 8000000
$hwstack = 40
$swstack = 16
$framesize = 32
$noramclear
Dim B As Byte
For B = 32 To 255 '32 will return IO register 0 address
Print Hex(b) ; " " ; Inp(b)
Next
Disable Interrupts
Eecr = 0
Mcucr = 0
Gpior2 = $0
Gpior1 = $0
Gpior0 = $0
'Puea = 0
Ddra = &B1111_1111
Porta.3 = 1
Porta.4 = 1
For B = 32 To 255 '32 will return IO register 0 address
Print Hex(b) ; " " ; Inp(b)
Next
End |
Regards, Meister |
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Mon Apr 28, 2014 8:09 pm Post subject: |
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you need to run it and store the output.
then do the same for the C code. then compare the differences.
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Meister
Joined: 27 May 2010
Posts: 319
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| Posted: Mon Apr 28, 2014 8:48 pm Post subject: |
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Hello,
Doesn't work.
Output:
....
24 ?UUU<\r><\n>
20 0<\r><\n>
21 0<\r><\n>
22 0<\r><\n>
23 0<\r><\n>
24 ?UUU<\r><\n>
....
| Code: | $regfile = "attiny841.dat"
$crystal = 8000000
$hwstack = 40
$swstack = 16
$framesize = 32
'$noramclear
$baud = 19200
Dim B As Byte
Open "com1:" For Binary As #1
'waitms 5000
Print #1 , "UUU"
For B = 32 To 255 '32 will return IO register 0 address
Print #1 , Hex(b) ; " " ; Inp(b)
Next
End |
Regards, Meister |
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Mon Apr 28, 2014 8:53 pm Post subject: |
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seems the baud is off. try to adjust with OSCCAL0, or adjust $crystal value.
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Meister
Joined: 27 May 2010
Posts: 319
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| Posted: Mon Apr 28, 2014 9:30 pm Post subject: |
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The Baudrate is 19540 instead of 19200. Hterm reads 20 UU..Us without error.
Setting Hterm and LA to 19540 does not make a difference. Reading is the same.
How far it counts up the B (prints it) depends on the number of U's. The more U's, the less increments.
The main point ist that print does never end although there is no loop (it's exactly code above).
Regards, Meister
P.S. Maybe they made this chip to be programmable only in C  .
//Atmel says: ATtiny441/841 is a
complex microcontroller with more peripheral units than can be addressed with the IN and OUT instructions.... |
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protoncek
Joined: 16 May 2011
Posts: 52
Location: Slovenia
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| Posted: Wed Jul 02, 2014 1:25 pm Post subject: |
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Hello!
I wonder...is it possible to get dat file for tiny841 ? Or maybe any info about when this chip Will be officially supported? |
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albertsm
Joined: 09 Apr 2004
Posts: 5921
Location: Holland
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| Posted: Wed Jul 02, 2014 2:20 pm Post subject: |
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the dat file alone is not enough. otherwise i would have posted it here. the tiny441/841 is a great new chip. packed with hardware for a small price.
we do not give dates but it will be fully supported in the next update. I never got my samples from atmel, but i could buy them from farnell.
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