avr programming in AVR Studio and CodeVision

[ghoola]

how can I change this AVR studio code to Codevision code?

 SPCR = _BV(SPE)|_BV(MSTR)|_BV(SPR1)|_BV(SPR0)

 

[alexan_e]

The definition of _BV is

#define _BV(bit) (1 << (bit))

so basically your code is

SPCR = (1<<SPE) | (1<<MSTR) | (1<<SPR1) | (1<<SPR0);

If the SPE,MSTR,SPR1 and SPR0 bits are not defined in codevision then check the datasheet and either add the definitions or replace them with numbers.

 

[ghoola]

what do you mean check the datasheet?

 

[alexan_e]

The datasheet lists all the registers and the names of each bit of the register

The register you refer to is



So if the definition don't exist in codevision you can either add them or replace the bit names with the bit number

 

[ghoola]

you mean like this
SPE 6
???????

 

[alexan_e]

Yes

#define SPE 6

but maybe it's already implemented in codevision and you don't need to add it.

 

[ghoola]

and one more thing should I define the reg SPCR at first?

 

[alexan_e]

I would expect the register names to be already defined.

You can try to compile your code, if any name if undefined you will get an error and then you can fix it.
You can also check the content of the header that codevision attaches in the project (the specific mcu model defines).

 

[ghoola]

thank you so much dear alexan_e

 

[alexan_e]

Which version are you using, is it 2.x or 3.x ?
And which MCU model?

 

[ghoola]

Which version are you using, is it 2.x or 3.x ?
And which MCU model?

2.05.3 and I have no idea about MCU????

 

[alexan_e]

Which AVR device, atmega8, atmega 88 etc?

 

[ghoola]

Which AVR device, atmega8, atmega 88 etc?

I'm using atmega32a

 

[alexan_e]

In version 2.03.9 there is only

sfrb SPCR=0xd;

The bit definitions got added in newer versions, like 2.6 or 3.x

 

[ghoola]

so if i download CV version 2.6 or 3.x everything going to be ok?

 

[alexan_e]

Yes, these versions include additional headers with definitions for the bit names (e.g. mega32_bits.h)