Hello all,
I have a quick question if you can help me please?
I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to
output the digital clock. When I look at this clock on Oscilloscope I see the
signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
High Regards,
John
ACLK Signal
Started by ●October 11, 2012
Reply by ●October 11, 20122012-10-11
And, your question is?
Emmett Redd Ph.D. mailto:E...@missouristate.edu
Professor (417)836-5221
Department of Physics, Astronomy, and Materials Science
Missouri State University Fax (417)836-6226
901 SOUTH NATIONAL Lab (417)836-3770
SPRINGFIELD, MO 65897 USA Dept (417)836-5131
In statesmanship get the formalities right, never mind about the moralities. -- Mark Twain.
________________________________________
From: m... [m...] On Behalf Of John [e...@yahoo.com]
Sent: Thursday, October 11, 2012 2:19 AM
To: m...
Subject: [msp430] ACLK Signal
Hello all,
I have a quick question if you can help me please?
I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to output the digital clock. When I look at this clock on Oscilloscope I see the signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
High Regards,
John
Emmett Redd Ph.D. mailto:E...@missouristate.edu
Professor (417)836-5221
Department of Physics, Astronomy, and Materials Science
Missouri State University Fax (417)836-6226
901 SOUTH NATIONAL Lab (417)836-3770
SPRINGFIELD, MO 65897 USA Dept (417)836-5131
In statesmanship get the formalities right, never mind about the moralities. -- Mark Twain.
________________________________________
From: m... [m...] On Behalf Of John [e...@yahoo.com]
Sent: Thursday, October 11, 2012 2:19 AM
To: m...
Subject: [msp430] ACLK Signal
Hello all,
I have a quick question if you can help me please?
I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to output the digital clock. When I look at this clock on Oscilloscope I see the signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
High Regards,
John
Reply by ●October 11, 20122012-10-11
You need to set BIT0 of P1OUT and also BIT0 of P1SEL. Is that what you did? Is
P1.0 connected to anything other than the oscilloscope?
--- In m..., "John" wrote:
>
> Hello all,
>
> I have a quick question if you can help me please?
>
> I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to output the digital clock. When I look at this clock on Oscilloscope I see the signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
>
> High Regards,
>
> John
>
--- In m..., "John" wrote:
>
> Hello all,
>
> I have a quick question if you can help me please?
>
> I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to output the digital clock. When I look at this clock on Oscilloscope I see the signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
>
> High Regards,
>
> John
>
Reply by ●October 12, 20122012-10-12
Thank you for the respond. My question is why the signal is not swinging
from 0 to 3.0 since the MSP430 is powered by 3.0V battery. Why is it
swinging from 0.9 to 2.7V? In response to your question no there is no
load on P1.0 other than oscilloscope.
Thanks,
John.
________________________________
From: old_cow_yellow
To: m...
Sent: Thursday, October 11, 2012 11:42 AM
Subject: [msp430] Re: ACLK Signal
You need to set BIT0 of P1OUT and also BIT0 of P1SEL. Is that what you did? Is P1.0 connected to anything other than the oscilloscope?
--- In m..., "John" wrote:
>
> Hello all,
>
> I have a quick question if you can help me please?
>
> I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to output the digital clock. When I look at this clock on Oscilloscope I see the signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
>
> High Regards,
>
> John
>
Thanks,
John.
________________________________
From: old_cow_yellow
To: m...
Sent: Thursday, October 11, 2012 11:42 AM
Subject: [msp430] Re: ACLK Signal
You need to set BIT0 of P1OUT and also BIT0 of P1SEL. Is that what you did? Is P1.0 connected to anything other than the oscilloscope?
--- In m..., "John" wrote:
>
> Hello all,
>
> I have a quick question if you can help me please?
>
> I am working on MSP430F5529. When I set the P1.0 as output and PS1.0 as one to output the digital clock. When I look at this clock on Oscilloscope I see the signal swings from 0.90 to 2.6V rather than from Zero to 3.0 Volts.
>
> High Regards,
>
> John
>
Reply by ●October 12, 20122012-10-12
On Thu, Oct 11, 2012 at 10:51 PM, john Mcdonald wrote:
> Thank you for the respond. My question is why the signal is not swinging
> from 0 to 3.0 since the MSP430 is powered by 3.0V battery. Why is it
> swinging from 0.9 to 2.7V? In response to your question no there is no
> load on P1.0 other than oscilloscope.
>
What happens with a heavier load? Try 1 kohm.
Is P1REN.0 set?
--
Regards,
Mark
markrages@gmail
> Thank you for the respond. My question is why the signal is not swinging
> from 0 to 3.0 since the MSP430 is powered by 3.0V battery. Why is it
> swinging from 0.9 to 2.7V? In response to your question no there is no
> load on P1.0 other than oscilloscope.
>
What happens with a heavier load? Try 1 kohm.
Is P1REN.0 set?
--
Regards,
Mark
markrages@gmail
Reply by ●October 12, 20122012-10-12
On 12.10.2012 06:51, john Mcdonald wrote:
:
> Why is it swinging from 0.9 to 2.7V? In response to your question no
> there is no load on P1.0 other than oscilloscope.
frequency?
Hardy
:
> Why is it swinging from 0.9 to 2.7V? In response to your question no
> there is no load on P1.0 other than oscilloscope.
frequency?
Hardy
Reply by ●October 12, 20122012-10-12
Okay, here are my responses to your questions:
1- The frequency is about 32.89KH rather than 32.768KHz,
2- I did add 1K the signal did not change,
3- I also set the P1REN.0=1 the signal status is still the same.
Thank you for your help,
John.
________________________________
From: Hardy Griech
To: m...
Sent: Thursday, October 11, 2012 10:49 PM
Subject: Re: [msp430] Re: ACLK Signal
On 12.10.2012 06:51, john Mcdonald wrote:
:
> Why is it swinging from 0.9 to 2.7V? In response to your question no
> there is no load on P1.0 other than oscilloscope.
frequency?
Hardy
1- The frequency is about 32.89KH rather than 32.768KHz,
2- I did add 1K the signal did not change,
3- I also set the P1REN.0=1 the signal status is still the same.
Thank you for your help,
John.
________________________________
From: Hardy Griech
To: m...
Sent: Thursday, October 11, 2012 10:49 PM
Subject: Re: [msp430] Re: ACLK Signal
On 12.10.2012 06:51, john Mcdonald wrote:
:
> Why is it swinging from 0.9 to 2.7V? In response to your question no
> there is no load on P1.0 other than oscilloscope.
frequency?
Hardy
Reply by ●October 12, 20122012-10-12
If you set up P1.0 as general purpose digital output and toggle it with "P1OUT
^= BIT0;" will it swing between 0 and 3V? How about other pins of P1?
--- In m..., john Mcdonald wrote:
>
> Okay, here are my responses to your questions:
>
> 1- The frequency is about 32.89KH rather than 32.768KHz,
> 2- I did add 1K the signal did not change,
> 3- I also set the P1REN.0=1 the signal status is still the same.
>
> Thank you for your help,
>
> John.
>
>
>
>
> ________________________________
> From: Hardy Griech
> To: m...
> Sent: Thursday, October 11, 2012 10:49 PM
> Subject: Re: [msp430] Re: ACLK Signal
>
>
>
> On 12.10.2012 06:51, john Mcdonald wrote:
> :
> > Why is it swinging from 0.9 to 2.7V? In response to your question no
> > there is no load on P1.0 other than oscilloscope.
>
> frequency?
>
> Hardy
>
>
>
>
>
--- In m..., john Mcdonald wrote:
>
> Okay, here are my responses to your questions:
>
> 1- The frequency is about 32.89KH rather than 32.768KHz,
> 2- I did add 1K the signal did not change,
> 3- I also set the P1REN.0=1 the signal status is still the same.
>
> Thank you for your help,
>
> John.
>
>
>
>
> ________________________________
> From: Hardy Griech
> To: m...
> Sent: Thursday, October 11, 2012 10:49 PM
> Subject: Re: [msp430] Re: ACLK Signal
>
>
>
> On 12.10.2012 06:51, john Mcdonald wrote:
> :
> > Why is it swinging from 0.9 to 2.7V? In response to your question no
> > there is no load on P1.0 other than oscilloscope.
>
> frequency?
>
> Hardy
>
>
>
>
>
Reply by ●October 12, 20122012-10-12
On Friday, October 12, 2012, john Mcdonald wrote:
> Okay, here are my responses to your questions:
>
> 1- The frequency is about 32.89KH rather than 32.768KHz,
> 2- I did add 1K the signal did not change,
> 3- I also set the P1REN.0=1 the signal status is still the same.
Set P1REN.0 to 0, not 1.
Regards
Mark
> Thank you for your help,
>
> John.
> ________________________________
> From: Hardy Griech >
> To: m...
> Sent: Thursday, October 11, 2012 10:49 PM
> Subject: Re: [msp430] Re: ACLK Signal
>
> On 12.10.2012 06:51, john Mcdonald wrote:
> :
> > Why is it swinging from 0.9 to 2.7V? In response to your question no
> > there is no load on P1.0 other than oscilloscope.
>
> frequency?
>
> Hardy
>
>
>
>
>
>
> Okay, here are my responses to your questions:
>
> 1- The frequency is about 32.89KH rather than 32.768KHz,
> 2- I did add 1K the signal did not change,
> 3- I also set the P1REN.0=1 the signal status is still the same.
Set P1REN.0 to 0, not 1.
Regards
Mark
> Thank you for your help,
>
> John.
> ________________________________
> From: Hardy Griech >
> To: m...
> Sent: Thursday, October 11, 2012 10:49 PM
> Subject: Re: [msp430] Re: ACLK Signal
>
> On 12.10.2012 06:51, john Mcdonald wrote:
> :
> > Why is it swinging from 0.9 to 2.7V? In response to your question no
> > there is no load on P1.0 other than oscilloscope.
>
> frequency?
>
> Hardy
>
>
>
>
>
>
