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#define help - Hithesh - Oct 28 7:28:04 2012
How do I #define port1.4 as CS(chip select), so that I can use directly
write CS=0 and CS=1 in the code?
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write CS=0 and CS=1 in the code?
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Re: #define help - Joe Radomski - Oct 28 15:54:25 2012
Against my better judgement I'll answer your question.. People really need to
learn to search the archives.. This question comes up fairly often.. The last
time I answered it was back in 2009.. see message # 42196
Â
>________________________________
> From: Hithesh
>To: msp430
>Sent: Sunday, October 28, 2012 7:28 AM
>Subject: [msp430] #define help
>
>
>Â
>
>How do I #define port1.4 as CS(chip select), so that I can use directly
>write CS=0 and CS=1 in the code?
>
>
>
>
>
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Â
>________________________________
> From: Hithesh
>To: msp430
>Sent: Sunday, October 28, 2012 7:28 AM
>Subject: [msp430] #define help
>
>
>Â
>
>How do I #define port1.4 as CS(chip select), so that I can use directly
>write CS=0 and CS=1 in the code?
>
>
>
>
>
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Re: #define help - Fávero Santos - Oct 29 6:27:24 2012
Hello!
Try something like this:
#define CS_HIGH() P1OUT |= BIT4
#define CS_LOW() P1OUT &= ~BIT4
This way, everytime you call CS_HIGH() and CS_LOW() in your code, it will
run as defined above.
Just to get something clear: When you do |= you're operating
the port with an OR operation. This means only the bit you've specified
will be changed. The same happens with &= ~ - only in this case
you're unselecting the specified bit.
Good luck!
Fávero Santos
On Sun, Oct 28, 2012 at 9:28 AM, Hithesh wrote:
> **
> How do I #define port1.4 as CS(chip select), so that I can use directly
> write CS=0 and CS=1 in the code?
>
>
>
>
>
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Try something like this:
#define CS_HIGH() P1OUT |= BIT4
#define CS_LOW() P1OUT &= ~BIT4
This way, everytime you call CS_HIGH() and CS_LOW() in your code, it will
run as defined above.
Just to get something clear: When you do
the port with an OR operation. This means only the bit you've specified
will be changed. The same happens with
you're unselecting the specified bit.
Good luck!
Fávero Santos
On Sun, Oct 28, 2012 at 9:28 AM, Hithesh
> **
> How do I #define port1.4 as CS(chip select), so that I can use directly
> write CS=0 and CS=1 in the code?
>
>
>
>
>
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Re: #define help - Hithesh - Oct 29 13:41:24 2012
Fávero
Woooohoooo!
Thanks. That works great.
-Hithesh
On Mon, Oct 29, 2012 at 3:57 PM, Fávero Santoswrote:
> Hello!
>
> Try something like this:
>
> #define CS_HIGH() P1OUT |= BIT4
> #define CS_LOW() P1OUT &= ~BIT4
>
> This way, everytime you call CS_HIGH() and CS_LOW() in your code, it will
> run as defined above.
>
> Just to get something clear: When you do |= you're
operati ng
> the port with an OR operation. This means only the bit you've specified
> will be changed. The same happens with &= ~ - only in this
case
> you're unselecting the specified bit.
>
> Good luck!
>
> Fávero Santos
>
> On Sun, Oct 28, 2012 at 9:28 AM, Hithesh wrote:
>
> > **
> >
> >
> > How do I #define port1.4 as CS(chip select), so that I can use directly
> > write CS=0 and CS=1 in the code?
> >
> >
> >
> >
> >
>
>
>
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Woooohoooo!
Thanks. That works great.
-Hithesh
On Mon, Oct 29, 2012 at 3:57 PM, Fávero Santos
> Hello!
>
> Try something like this:
>
> #define CS_HIGH() P1OUT |= BIT4
> #define CS_LOW() P1OUT &= ~BIT4
>
> This way, everytime you call CS_HIGH() and CS_LOW() in your code, it will
> run as defined above.
>
> Just to get something clear: When you do
> the port with an OR operation. This means only the bit you've specified
> will be changed. The same happens with
> you're unselecting the specified bit.
>
> Good luck!
>
> Fávero Santos
>
> On Sun, Oct 28, 2012 at 9:28 AM, Hithesh
>
> > **
> >
> >
> > How do I #define port1.4 as CS(chip select), so that I can use directly
> > write CS=0 and CS=1 in the code?
> >
> >
> >
> >
> >
>
>
>
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )