I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4
wires going to my target board (Vcc, ground, Test, RST). I have used this
sort of setup many times. My target board has a 12V input and it generates
11volts to be used on board to generate 3.3V and a few other DC voltages.
When I connect the cable from the PW28 board I can program the board and run
it. If I connect the 12 volts to my target board the IAR crashes and I have
to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I
have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts
to ground and the whole target board draws 17mA when no high power devices
are connected (3G modem). I can program in a led flash and this will work
with no 12V connected. If I remove the FET and apply power the fled will
flash. It seems the program runs but it will not download the program when I
have the 12V connected. I checked the notes from TI and can see no hints as
to what is happening.
Any suggestions?
TIA
Peter
Problems with IAR and programming
Started by ●February 21, 2015
Reply by ●February 21, 20152015-02-21
I have many times used the SoftBaugh board with the MSP430F2274 that goes with
their MSP430 State Machine book with my students. Not always, but often enough,
similar non-operation happens when it is being supplied by its wall-wart supply
and the SoftBaugh USBP programmer. Occasionally, the PC locked up and had to be
rebooted. Since it was easy enough to remind students to have only one or the
other but not both sources of power connected, they could proceed with the
programming and then separately test operation and measure currents etc.
I never investigated further.
My suspicions are that the two power supplies conflict, cause large currents to flow, and generate noise that interferes with the digital signals. Ground loops may also be involved and can cause similar noise issues.
Some (rhetorical) questions for you:
1. Do you ABSOLUTELY have to have both power-supplying devices connected at the same time to accomplish your desired task?
2. Can you disconnect just the Vcc wire going from your FET to your target board?
3. Consider ALL possible ground loops and breaking them. (Techniques may vary and even include 2-to-3 prong adapters on the power cords since the Safety Ground wire and the Grounded Neutral wire are sometimes both connected to equipment cases either by design or accident or the case ground is also the circuit ground, again, either by design or accident.) Ground loops are subtle and, sometimes, are cleared without knowing what action actually cleared them.
HTH
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...]
Sent: Friday, February 20, 2015 11:12 PM
To: m...
Subject: [msp430] Problems with IAR and programming
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4 wires going to my target board (Vcc, ground, Test, RST). I have used this sort of setup many times. My target board has a 12V input and it generates 11volts to be used on board to generate 3.3V and a few other DC voltages. When I connect the cable from the PW28 board I can program the board and run it. If I connect the 12 volts to my target board the IAR crashes and I have to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole target board draws 17mA when no high power devices are connected (3G modem). I can program in a led flash and this will work with no 12V connected. If I remove the FET and apply power the fled will flash. It seems the program runs but it will not download the program when I have the 12V connected. I checked the notes from TI and can see no hints as to what is happening.
Any suggestions?
TIA
Peter
I never investigated further.
My suspicions are that the two power supplies conflict, cause large currents to flow, and generate noise that interferes with the digital signals. Ground loops may also be involved and can cause similar noise issues.
Some (rhetorical) questions for you:
1. Do you ABSOLUTELY have to have both power-supplying devices connected at the same time to accomplish your desired task?
2. Can you disconnect just the Vcc wire going from your FET to your target board?
3. Consider ALL possible ground loops and breaking them. (Techniques may vary and even include 2-to-3 prong adapters on the power cords since the Safety Ground wire and the Grounded Neutral wire are sometimes both connected to equipment cases either by design or accident or the case ground is also the circuit ground, again, either by design or accident.) Ground loops are subtle and, sometimes, are cleared without knowing what action actually cleared them.
HTH
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...]
Sent: Friday, February 20, 2015 11:12 PM
To: m...
Subject: [msp430] Problems with IAR and programming
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4 wires going to my target board (Vcc, ground, Test, RST). I have used this sort of setup many times. My target board has a 12V input and it generates 11volts to be used on board to generate 3.3V and a few other DC voltages. When I connect the cable from the PW28 board I can program the board and run it. If I connect the 12 volts to my target board the IAR crashes and I have to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole target board draws 17mA when no high power devices are connected (3G modem). I can program in a led flash and this will work with no 12V connected. If I remove the FET and apply power the fled will flash. It seems the program runs but it will not download the program when I have the 12V connected. I checked the notes from TI and can see no hints as to what is happening.
Any suggestions?
TIA
Peter
Reply by ●February 21, 20152015-02-21
I haven't used a FET board for a while, but I recall thaqt several of
them used to have this issue if there was a slight difference in Vcc
levels, very slight. The same doesn't occur with the SBW dongles, they
live quite happily with joint supplies and a 0.6V differecne in Vcc,
though I wouldn't recommend this. I can't find my FET documentation at
the moment, but I seem to recall there was a resistor you could change
that would allow the FET board to handle this.
Al
On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
> I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
> MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and
> 4 wires going to my target board (Vcc, ground, Test, RST). I have used
> this sort of setup many times. My target board has a 12V input and it
> generates 11volts to be used on board to generate 3.3V and a few other
> DC voltages. When I connect the cable from the PW28 board I can
> program the board and run it. If I connect the 12 volts to my target
> board the IAR crashes and I have to turn my PC off and on. When the
> 12V is not on the Vcc is 3.32V and if I have the 12V connected and no
> FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole
> target board draws 17mA when no high power devices are connected (3G
> modem). I can program in a led flash and this will work with no 12V
> connected. If I remove the FET and apply power the fled will flash. It
> seems the program runs but it will not download the program when I
> have the 12V connected. I checked the notes from TI and can see no
> hints as to what is happening.
>
> Any suggestions?
>
> TIA
>
> Peter
them used to have this issue if there was a slight difference in Vcc
levels, very slight. The same doesn't occur with the SBW dongles, they
live quite happily with joint supplies and a 0.6V differecne in Vcc,
though I wouldn't recommend this. I can't find my FET documentation at
the moment, but I seem to recall there was a resistor you could change
that would allow the FET board to handle this.
Al
On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
> I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
> MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and
> 4 wires going to my target board (Vcc, ground, Test, RST). I have used
> this sort of setup many times. My target board has a 12V input and it
> generates 11volts to be used on board to generate 3.3V and a few other
> DC voltages. When I connect the cable from the PW28 board I can
> program the board and run it. If I connect the 12 volts to my target
> board the IAR crashes and I have to turn my PC off and on. When the
> 12V is not on the Vcc is 3.32V and if I have the 12V connected and no
> FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole
> target board draws 17mA when no high power devices are connected (3G
> modem). I can program in a led flash and this will work with no 12V
> connected. If I remove the FET and apply power the fled will flash. It
> seems the program runs but it will not download the program when I
> have the 12V connected. I checked the notes from TI and can see no
> hints as to what is happening.
>
> Any suggestions?
>
> TIA
>
> Peter
Reply by ●February 21, 20152015-02-21
My memory of the 14 pin JTAG connector was of two different Vcc
connections. One provided power from the FET to the target while the
other was used to sense the Vcc level on the target and adjust signal
levels.
A quick check of slau278u shows two signals:
VCC_TOOL
VCC_TARGET
VCC_TOOL provides power to the target while VCC_TARGET is used to sense
the Vcc level.
Having an external power supply connected to VCC_TOOL is just asking for
trouble.
--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving
connections. One provided power from the FET to the target while the
other was used to sense the Vcc level on the target and adjust signal
levels.
A quick check of slau278u shows two signals:
VCC_TOOL
VCC_TARGET
VCC_TOOL provides power to the target while VCC_TARGET is used to sense
the Vcc level.
Having an external power supply connected to VCC_TOOL is just asking for
trouble.
--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving
Reply by ●February 21, 20152015-02-21
Hi Emmett
I do need the 12V input to my target board as it is used to supply a
switching regulator which supplies 11.3V. This in turn goes to another board
to be used to supply a 3G modem. This board is not connected. The 11.3 volts
is also used to supply a Lipo battery charger. It is on the same board but
no battery connected. At present my PW28 board is supplied by a
plugpack(wall wart) which delivers 3.3V to the PW28 board. The settings on
this are for ext power.
I am sure you are correct with the power supplies conflicting or some noise
interference. I have just noticed that the plugpack to supply the 12V is an
older unregulated one. On no load the voltage is on about 18V. I will swap
this for a regulated one. However, my regulator is capable of handling up to
35V. I have used this same circuit many times before without any problems so
it is probably not noise.
In answer to your questions
1. No I do not have to have both on. I will continue to have my regulated
12V in to my target board and remove the 3.3V plugpack and change the
setting on PW28 to INT.
2. I can disconnect this wire and see what happens.
3. These boards are not in a case yet, just sitting on the bench while I am
starting the debugging.
This does help me as I was starting to stall. I will advise the outcome.
Thanks for the assistance.
Peter
-----Original Message-----
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 8:33 PM
To: m...
Subject: RE: [msp430] Problems with IAR and programming
I have many times used the SoftBaugh board with the MSP430F2274 that goes
with their MSP430 State Machine book with my students. Not always, but
often enough, similar non-operation happens when it is being supplied by its
wall-wart supply and the SoftBaugh USBP programmer. Occasionally, the PC
locked up and had to be rebooted. Since it was easy enough to remind
students to have only one or the other but not both sources of power
connected, they could proceed with the programming and then separately test
operation and measure currents etc.
I never investigated further.
My suspicions are that the two power supplies conflict, cause large currents
to flow, and generate noise that interferes with the digital signals.
Ground loops may also be involved and can cause similar noise issues.
Some (rhetorical) questions for you:
1. Do you ABSOLUTELY have to have both power-supplying devices connected at
the same time to accomplish your desired task?
2. Can you disconnect just the Vcc wire going from your FET to your target
board?
3. Consider ALL possible ground loops and breaking them. (Techniques may
vary and even include 2-to-3 prong adapters on the power cords since the
Safety Ground wire and the Grounded Neutral wire are sometimes both
connected to equipment cases either by design or accident or the case ground
is also the circuit ground, again, either by design or accident.) Ground
loops are subtle and, sometimes, are cleared without knowing what action
actually cleared them.
HTH
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...]
Sent: Friday, February 20, 2015 11:12 PM
To: m...
Subject: [msp430] Problems with IAR and programming
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4
wires going to my target board (Vcc, ground, Test, RST). I have used this
sort of setup many times. My target board has a 12V input and it generates
11volts to be used on board to generate 3.3V and a few other DC voltages.
When I connect the cable from the PW28 board I can program the board and run
it. If I connect the 12 volts to my target board the IAR crashes and I have
to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I
have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts
to ground and the whole target board draws 17mA when no high power devices
are connected (3G modem). I can program in a led flash and this will work
with no 12V connected. If I remove the FET and apply power the fled will
flash. It seems the program runs but it will not download the program when I
have the 12V connected . I checked the notes from TI and can see no hints
as to what is happening.
Any suggestions?
TIA
Peter
I do need the 12V input to my target board as it is used to supply a
switching regulator which supplies 11.3V. This in turn goes to another board
to be used to supply a 3G modem. This board is not connected. The 11.3 volts
is also used to supply a Lipo battery charger. It is on the same board but
no battery connected. At present my PW28 board is supplied by a
plugpack(wall wart) which delivers 3.3V to the PW28 board. The settings on
this are for ext power.
I am sure you are correct with the power supplies conflicting or some noise
interference. I have just noticed that the plugpack to supply the 12V is an
older unregulated one. On no load the voltage is on about 18V. I will swap
this for a regulated one. However, my regulator is capable of handling up to
35V. I have used this same circuit many times before without any problems so
it is probably not noise.
In answer to your questions
1. No I do not have to have both on. I will continue to have my regulated
12V in to my target board and remove the 3.3V plugpack and change the
setting on PW28 to INT.
2. I can disconnect this wire and see what happens.
3. These boards are not in a case yet, just sitting on the bench while I am
starting the debugging.
This does help me as I was starting to stall. I will advise the outcome.
Thanks for the assistance.
Peter
-----Original Message-----
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 8:33 PM
To: m...
Subject: RE: [msp430] Problems with IAR and programming
I have many times used the SoftBaugh board with the MSP430F2274 that goes
with their MSP430 State Machine book with my students. Not always, but
often enough, similar non-operation happens when it is being supplied by its
wall-wart supply and the SoftBaugh USBP programmer. Occasionally, the PC
locked up and had to be rebooted. Since it was easy enough to remind
students to have only one or the other but not both sources of power
connected, they could proceed with the programming and then separately test
operation and measure currents etc.
I never investigated further.
My suspicions are that the two power supplies conflict, cause large currents
to flow, and generate noise that interferes with the digital signals.
Ground loops may also be involved and can cause similar noise issues.
Some (rhetorical) questions for you:
1. Do you ABSOLUTELY have to have both power-supplying devices connected at
the same time to accomplish your desired task?
2. Can you disconnect just the Vcc wire going from your FET to your target
board?
3. Consider ALL possible ground loops and breaking them. (Techniques may
vary and even include 2-to-3 prong adapters on the power cords since the
Safety Ground wire and the Grounded Neutral wire are sometimes both
connected to equipment cases either by design or accident or the case ground
is also the circuit ground, again, either by design or accident.) Ground
loops are subtle and, sometimes, are cleared without knowing what action
actually cleared them.
HTH
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...]
Sent: Friday, February 20, 2015 11:12 PM
To: m...
Subject: [msp430] Problems with IAR and programming
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4
wires going to my target board (Vcc, ground, Test, RST). I have used this
sort of setup many times. My target board has a 12V input and it generates
11volts to be used on board to generate 3.3V and a few other DC voltages.
When I connect the cable from the PW28 board I can program the board and run
it. If I connect the 12 volts to my target board the IAR crashes and I have
to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I
have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts
to ground and the whole target board draws 17mA when no high power devices
are connected (3G modem). I can program in a led flash and this will work
with no 12V connected. If I remove the FET and apply power the fled will
flash. It seems the program runs but it will not download the program when I
have the 12V connected . I checked the notes from TI and can see no hints
as to what is happening.
Any suggestions?
TIA
Peter
Reply by ●February 21, 20152015-02-21
Hi Al
My difference in Vcc is very small as noted below. But I agree it is something between the 2 supplies that is causing the problem, as Emmett alluded to. I will try his suggestions and see how it goes.
What is the SBW dongle you refer to in your email?
Thanks
Peter
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 9:55 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
I haven't used a FET board for a while, but I recall thaqt several of them used to have this issue if there was a slight difference in Vcc levels, very slight. The same doesn't occur with the SBW dongles, they live quite happily with joint supplies and a 0.6V differecne in Vcc, though I wouldn't recommend this. I can't find my FET documentation at the moment, but I seem to recall there was a resistor you could change that would allow the FET board to handle this.
Al
On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4 wires going to my target board (Vcc, ground, Test, RST). I have used this sort of setup many times. My target board has a 12V input and it generates 11volts to be used on board to generate 3.3V and a few other DC voltages. When I connect the cable from the PW28 board I can program the board and run it. If I connect the 12 volts to my target board the IAR crashes and I have to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole target board draws 17mA when no high power devices are connected (3G modem). I can program in a led flash and this will work with no 12V connected. If I remove the FET and apply power the fled will flash. It seems the program runs but it will not download the program when I have the 12V connected. I checked the notes from TI and can see no hints as to what is happening.
Any suggestions?
TIA
Peter
My difference in Vcc is very small as noted below. But I agree it is something between the 2 supplies that is causing the problem, as Emmett alluded to. I will try his suggestions and see how it goes.
What is the SBW dongle you refer to in your email?
Thanks
Peter
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 9:55 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
I haven't used a FET board for a while, but I recall thaqt several of them used to have this issue if there was a slight difference in Vcc levels, very slight. The same doesn't occur with the SBW dongles, they live quite happily with joint supplies and a 0.6V differecne in Vcc, though I wouldn't recommend this. I can't find my FET documentation at the moment, but I seem to recall there was a resistor you could change that would allow the FET board to handle this.
Al
On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4 wires going to my target board (Vcc, ground, Test, RST). I have used this sort of setup many times. My target board has a 12V input and it generates 11volts to be used on board to generate 3.3V and a few other DC voltages. When I connect the cable from the PW28 board I can program the board and run it. If I connect the 12 volts to my target board the IAR crashes and I have to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole target board draws 17mA when no high power devices are connected (3G modem). I can program in a led flash and this will work with no 12V connected. If I remove the FET and apply power the fled will flash. It seems the program runs but it will not download the program when I have the 12V connected. I checked the notes from TI and can see no hints as to what is happening.
Any suggestions?
TIA
Peter
Reply by ●February 21, 20152015-02-21
Hi David
My PW28 board currently has settings to EXT for the power so it is supplied
by a 3.3V plugpack. This will be the same voltage that is fed to my target
board. Following Emmett's suggestion I will soon find out whether this is
wrong.
Thanks for the help
Peter
-----Original Message-----
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 10:30 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
My memory of the 14 pin JTAG connector was of two different Vcc connections.
One provided power from the FET to the target while the other was used to
sense the Vcc level on the target and adjust signal levels.
A quick check of slau278u shows two signals:
VCC_TOOL
VCC_TARGET
VCC_TOOL provides power to the target while VCC_TARGET is used to sense the
Vcc level.
Having an external power supply connected to VCC_TOOL is just asking for
trouble.
--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving
My PW28 board currently has settings to EXT for the power so it is supplied
by a 3.3V plugpack. This will be the same voltage that is fed to my target
board. Following Emmett's suggestion I will soon find out whether this is
wrong.
Thanks for the help
Peter
-----Original Message-----
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 10:30 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
My memory of the 14 pin JTAG connector was of two different Vcc connections.
One provided power from the FET to the target while the other was used to
sense the Vcc level on the target and adjust signal levels.
A quick check of slau278u shows two signals:
VCC_TOOL
VCC_TARGET
VCC_TOOL provides power to the target while VCC_TARGET is used to sense the
Vcc level.
Having an external power supply connected to VCC_TOOL is just asking for
trouble.
--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving
Reply by ●February 22, 20152015-02-22
Hi Emmett
I have now looked closely at what I have and taken your comments onboard.
I have a MSP430-FET which is connected to a PW28 board and this is linked to
my target board with a 2 way ribbon cable. The PW28 board has its settings
on EXT with a 3.3 plugpack delivering the external power. My target board
has a 12 volt plugpack input which is used to develop 11.3 volts which in
turn drives a 3.3V regulator and a 3.8V regulator. I am running IAR 6.5,
Under these conditions the program crashes when I attempt to build the
project.
1. Remove the 12V input. Try a build - OK.
2. Alter the PW28 board so that the power is internal and remove the 3.3V
plugpack. Try a build - ok
3. Put in the 12V plugpack. Try a build - crashes. Restart PC
4. Try again - crashes, restart PC
5. Remove Vcc lead from cable that joins PW28 to my target board, 12V still
connected. Try a build - crashes. Restart PC
6. Check 3.3V delivered by my target board. It has some noise on it of
~50mV.
In the document SLAU278U it talks about FAQs and says there is a problem
when powered from externally (target board). It suggests linking RST with
pin 11 on the JTAG connector. I tried this but it still crashed.
My connectors are all short as I did have problems like this a few years
ago. Tomorrow I shall bypass the 11.3V regulator and power the 3.3V
regulator in another way.
Thanks all for the help
Peter
-----Original Message-----
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 8:33 PM
To: m...
Subject: RE: [msp430] Problems with IAR and programming
I have many times used the SoftBaugh board with the MSP430F2274 that goes
with their MSP430 State Machine book with my students. Not always, but
often enough, similar non-operation happens when it is being supplied by its
wall-wart supply and the SoftBaugh USBP programmer. Occasionally, the PC
locked up and had to be rebooted. Since it was easy enough to remind
students to have only one or the other but not both sources of power
connected, they could proceed with the programming and then separately test
operation and measure currents etc.
I never investigated further.
My suspicions are that the two power supplies conflict, cause large currents
to flow, and generate noise that interferes with the digital signals.
Ground loops may also be involved and can cause similar noise issues.
Some (rhetorical) questions for you:
1. Do you ABSOLUTELY have to have both power-supplying devices connected at
the same time to accomplish your desired task?
2. Can you disconnect just the Vcc wire going from your FET to your target
board?
3. Consider ALL possible ground loops and breaking them. (Techniques may
vary and even include 2-to-3 prong adapters on the power cords since the
Safety Ground wire and the Grounded Neutral wire are sometimes both
connected to equipment cases either by design or accident or the case ground
is also the circuit ground, again, either by design or accident.) Ground
loops are subtle and, sometimes, are cleared without knowing what action
actually cleared them.
HTH
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...]
Sent: Friday, February 20, 2015 11:12 PM
To: m...
Subject: [msp430] Problems with IAR and programming
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4
wires going to my target board (Vcc, ground, Test, RST). I have used this
sort of setup many times. My target board has a 12V input and it generates
11volts to be used on board to generate 3.3V and a few other DC voltages.
When I connect the cable from the PW28 board I can program the board and run
it. If I connect the 12 volts to my target board the IAR crashes and I have
to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I
have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts
to ground and the whole target board draws 17mA when no high power devices
are connected (3G modem). I can program in a led flash and this will work
with no 12V connected. If I remove the FET and apply power the fled will
flash. It seems the program runs but it will not download the program when I
have the 12V connected . I checked the notes from TI and can see no hints
as to what is happening.
Any suggestions?
TIA
Peter
I have now looked closely at what I have and taken your comments onboard.
I have a MSP430-FET which is connected to a PW28 board and this is linked to
my target board with a 2 way ribbon cable. The PW28 board has its settings
on EXT with a 3.3 plugpack delivering the external power. My target board
has a 12 volt plugpack input which is used to develop 11.3 volts which in
turn drives a 3.3V regulator and a 3.8V regulator. I am running IAR 6.5,
Under these conditions the program crashes when I attempt to build the
project.
1. Remove the 12V input. Try a build - OK.
2. Alter the PW28 board so that the power is internal and remove the 3.3V
plugpack. Try a build - ok
3. Put in the 12V plugpack. Try a build - crashes. Restart PC
4. Try again - crashes, restart PC
5. Remove Vcc lead from cable that joins PW28 to my target board, 12V still
connected. Try a build - crashes. Restart PC
6. Check 3.3V delivered by my target board. It has some noise on it of
~50mV.
In the document SLAU278U it talks about FAQs and says there is a problem
when powered from externally (target board). It suggests linking RST with
pin 11 on the JTAG connector. I tried this but it still crashed.
My connectors are all short as I did have problems like this a few years
ago. Tomorrow I shall bypass the 11.3V regulator and power the 3.3V
regulator in another way.
Thanks all for the help
Peter
-----Original Message-----
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 8:33 PM
To: m...
Subject: RE: [msp430] Problems with IAR and programming
I have many times used the SoftBaugh board with the MSP430F2274 that goes
with their MSP430 State Machine book with my students. Not always, but
often enough, similar non-operation happens when it is being supplied by its
wall-wart supply and the SoftBaugh USBP programmer. Occasionally, the PC
locked up and had to be rebooted. Since it was easy enough to remind
students to have only one or the other but not both sources of power
connected, they could proceed with the programming and then separately test
operation and measure currents etc.
I never investigated further.
My suspicions are that the two power supplies conflict, cause large currents
to flow, and generate noise that interferes with the digital signals.
Ground loops may also be involved and can cause similar noise issues.
Some (rhetorical) questions for you:
1. Do you ABSOLUTELY have to have both power-supplying devices connected at
the same time to accomplish your desired task?
2. Can you disconnect just the Vcc wire going from your FET to your target
board?
3. Consider ALL possible ground loops and breaking them. (Techniques may
vary and even include 2-to-3 prong adapters on the power cords since the
Safety Ground wire and the Grounded Neutral wire are sometimes both
connected to equipment cases either by design or accident or the case ground
is also the circuit ground, again, either by design or accident.) Ground
loops are subtle and, sometimes, are cleared without knowing what action
actually cleared them.
HTH
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...]
Sent: Friday, February 20, 2015 11:12 PM
To: m...
Subject: [msp430] Problems with IAR and programming
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a
MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4
wires going to my target board (Vcc, ground, Test, RST). I have used this
sort of setup many times. My target board has a 12V input and it generates
11volts to be used on board to generate 3.3V and a few other DC voltages.
When I connect the cable from the PW28 board I can program the board and run
it. If I connect the 12 volts to my target board the IAR crashes and I have
to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I
have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts
to ground and the whole target board draws 17mA when no high power devices
are connected (3G modem). I can program in a led flash and this will work
with no 12V connected. If I remove the FET and apply power the fled will
flash. It seems the program runs but it will not download the program when I
have the 12V connected . I checked the notes from TI and can see no hints
as to what is happening.
Any suggestions?
TIA
Peter
Reply by ●February 22, 20152015-02-22
Hi Peter, I would suspect the wall wart as the issue. i seem to recall
somebody else with a similar problem that went away when they replaced
the wall awrt with a well regulated supply.
When I worked with the Telit 865 module I used a boost regulator with an
Li-poly capable of delivering 4A continuous. It wasn't a large battery.
That was for portability though as I didn't want to be tied to a vehicle
supply.
The SBW is the Spy By Wire interface used on a lot of the smaller parts.
I rarely need to go to large parts unless I need lots of I/O, and this
fits in fine.
Al
On 22/02/2015 1:02 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
> Hi Al
>
> My difference in Vcc is very small as noted below. But I agree it is
> something between the 2 supplies that is causing the problem, as
> Emmett alluded to. I will try his suggestions and see how it goes.
>
> What is the SBW dongle you refer to in your email?
>
> Thanks
>
> Peter
>
> *From:*m... [mailto:m...]
> *Sent:* Saturday, 21 February 2015 9:55 PM
> *To:* m...
> *Subject:* Re: [msp430] Problems with IAR and programming
>
> I haven't used a FET board for a while, but I recall thaqt several of
> them used to have this issue if there was a slight difference in Vcc
> levels, very slight. The same doesn't occur with the SBW dongles, they
> live quite happily with joint supplies and a 0.6V differecne in Vcc,
> though I wouldn't recommend this. I can't find my FET documentation at
> the moment, but I seem to recall there was a resistor you could change
> that would allow the FET board to handle this.
>
> Al
>
> On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au
> [msp430] wrote:
>
> I have a target board with a MSP430FR5729. I am using IAR EW6.5
> and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET
> module and 4 wires going to my target board (Vcc, ground, Test,
> RST). I have used this sort of setup many times. My target board
> has a 12V input and it generates 11volts to be used on board to
> generate 3.3V and a few other DC voltages. When I connect the
> cable from the PW28 board I can program the board and run it. If I
> connect the 12 volts to my target board the IAR crashes and I have
> to turn my PC off and on. When the 12V is not on the Vcc is 3.32V
> and if I have the 12V connected and no FET the Vcc is 3.29V. I
> cannot see any shorts to ground and the whole target board draws
> 17mA when no high power devices are connected (3G modem). I can
> program in a led flash and this will work with no 12V connected.
> If I remove the FET and apply power the fled will flash. It seems
> the program runs but it will not download the program when I have
> the 12V connected. I checked the notes from TI and can see no
> hints as to what is happening.
>
> Any suggestions?
>
> TIA
>
> Peter
somebody else with a similar problem that went away when they replaced
the wall awrt with a well regulated supply.
When I worked with the Telit 865 module I used a boost regulator with an
Li-poly capable of delivering 4A continuous. It wasn't a large battery.
That was for portability though as I didn't want to be tied to a vehicle
supply.
The SBW is the Spy By Wire interface used on a lot of the smaller parts.
I rarely need to go to large parts unless I need lots of I/O, and this
fits in fine.
Al
On 22/02/2015 1:02 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
> Hi Al
>
> My difference in Vcc is very small as noted below. But I agree it is
> something between the 2 supplies that is causing the problem, as
> Emmett alluded to. I will try his suggestions and see how it goes.
>
> What is the SBW dongle you refer to in your email?
>
> Thanks
>
> Peter
>
> *From:*m... [mailto:m...]
> *Sent:* Saturday, 21 February 2015 9:55 PM
> *To:* m...
> *Subject:* Re: [msp430] Problems with IAR and programming
>
> I haven't used a FET board for a while, but I recall thaqt several of
> them used to have this issue if there was a slight difference in Vcc
> levels, very slight. The same doesn't occur with the SBW dongles, they
> live quite happily with joint supplies and a 0.6V differecne in Vcc,
> though I wouldn't recommend this. I can't find my FET documentation at
> the moment, but I seem to recall there was a resistor you could change
> that would allow the FET board to handle this.
>
> Al
>
> On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au
> [msp430] wrote:
>
> I have a target board with a MSP430FR5729. I am using IAR EW6.5
> and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET
> module and 4 wires going to my target board (Vcc, ground, Test,
> RST). I have used this sort of setup many times. My target board
> has a 12V input and it generates 11volts to be used on board to
> generate 3.3V and a few other DC voltages. When I connect the
> cable from the PW28 board I can program the board and run it. If I
> connect the 12 volts to my target board the IAR crashes and I have
> to turn my PC off and on. When the 12V is not on the Vcc is 3.32V
> and if I have the 12V connected and no FET the Vcc is 3.29V. I
> cannot see any shorts to ground and the whole target board draws
> 17mA when no high power devices are connected (3G modem). I can
> program in a led flash and this will work with no 12V connected.
> If I remove the FET and apply power the fled will flash. It seems
> the program runs but it will not download the program when I have
> the 12V connected. I checked the notes from TI and can see no
> hints as to what is happening.
>
> Any suggestions?
>
> TIA
>
> Peter
Reply by ●February 22, 20152015-02-22
Hi Al,
That is what I thought. But I only had unregulated ones in stock. I will pick up one this morning and see how it goes.
I am using SBW but still using the MSP430-FETUIF. Do you use the same or is it a launchpad device? I would like to get a more reliable emulator than this.
Cheers
Peter
From: m... [mailto:m...]
Sent: Sunday, 22 February 2015 3:18 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
Hi Peter, I would suspect the wall wart as the issue. i seem to recall somebody else with a similar problem that went away when they replaced the wall awrt with a well regulated supply.
When I worked with the Telit 865 module I used a boost regulator with an Li-poly capable of delivering 4A continuous. It wasn't a large battery. That was for portability though as I didn't want to be tied to a vehicle supply.
The SBW is the Spy By Wire interface used on a lot of the smaller parts. I rarely need to go to large parts unless I need lots of I/O, and this fits in fine.
Al
On 22/02/2015 1:02 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
Hi Al
My difference in Vcc is very small as noted below. But I agree it is something between the 2 supplies that is causing the problem, as Emmett alluded to. I will try his suggestions and see how it goes.
What is the SBW dongle you refer to in your email?
Thanks
Peter
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 9:55 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
I haven't used a FET board for a while, but I recall thaqt several of them used to have this issue if there was a slight difference in Vcc levels, very slight. The same doesn't occur with the SBW dongles, they live quite happily with joint supplies and a 0.6V differecne in Vcc, though I wouldn't recommend this. I can't find my FET documentation at the moment, but I seem to recall there was a resistor you could change that would allow the FET board to handle this.
Al
On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4 wires going to my target board (Vcc, ground, Test, RST). I have used this sort of setup many times. My target board has a 12V input and it generates 11volts to be used on board to generate 3.3V and a few other DC voltages. When I connect the cable from the PW28 board I can program the board and run it. If I connect the 12 volts to my target board the IAR crashes and I have to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole target board draws 17mA when no high power devices are connected (3G modem). I can program in a led flash and this will work with no 12V connected. If I remove the FET and apply power the fled will flash. It seems the program runs but it will not download the program when I have the 12V connected. I checked the notes from TI and can see no hints as to what is happening.
Any suggestions?
TIA
Peter
That is what I thought. But I only had unregulated ones in stock. I will pick up one this morning and see how it goes.
I am using SBW but still using the MSP430-FETUIF. Do you use the same or is it a launchpad device? I would like to get a more reliable emulator than this.
Cheers
Peter
From: m... [mailto:m...]
Sent: Sunday, 22 February 2015 3:18 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
Hi Peter, I would suspect the wall wart as the issue. i seem to recall somebody else with a similar problem that went away when they replaced the wall awrt with a well regulated supply.
When I worked with the Telit 865 module I used a boost regulator with an Li-poly capable of delivering 4A continuous. It wasn't a large battery. That was for portability though as I didn't want to be tied to a vehicle supply.
The SBW is the Spy By Wire interface used on a lot of the smaller parts. I rarely need to go to large parts unless I need lots of I/O, and this fits in fine.
Al
On 22/02/2015 1:02 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
Hi Al
My difference in Vcc is very small as noted below. But I agree it is something between the 2 supplies that is causing the problem, as Emmett alluded to. I will try his suggestions and see how it goes.
What is the SBW dongle you refer to in your email?
Thanks
Peter
From: m... [mailto:m...]
Sent: Saturday, 21 February 2015 9:55 PM
To: m...
Subject: Re: [msp430] Problems with IAR and programming
I haven't used a FET board for a while, but I recall thaqt several of them used to have this issue if there was a slight difference in Vcc levels, very slight. The same doesn't occur with the SBW dongles, they live quite happily with joint supplies and a 0.6V differecne in Vcc, though I wouldn't recommend this. I can't find my FET documentation at the moment, but I seem to recall there was a resistor you could change that would allow the FET board to handle this.
Al
On 21/02/2015 3:42 PM, 'Peter Grey' m...@ozemail.com.au [msp430] wrote:
I have a target board with a MSP430FR5729. I am using IAR EW6.5 and a MSP430-FETUIF. I have a MSP-TS430PW28 connected to the FET module and 4 wires going to my target board (Vcc, ground, Test, RST). I have used this sort of setup many times. My target board has a 12V input and it generates 11volts to be used on board to generate 3.3V and a few other DC voltages. When I connect the cable from the PW28 board I can program the board and run it. If I connect the 12 volts to my target board the IAR crashes and I have to turn my PC off and on. When the 12V is not on the Vcc is 3.32V and if I have the 12V connected and no FET the Vcc is 3.29V. I cannot see any shorts to ground and the whole target board draws 17mA when no high power devices are connected (3G modem). I can program in a led flash and this will work with no 12V connected. If I remove the FET and apply power the fled will flash. It seems the program runs but it will not download the program when I have the 12V connected. I checked the notes from TI and can see no hints as to what is happening.
Any suggestions?
TIA
Peter
