MCUXpresso IDEのトピックRe: Problem while displaying a live variable of type float in MCUXPRESSO

Problem while displaying a live variable of type float in MCUXPRESSO

maratheapurv — Mon, 01 Jul 2019 10:36:32 GMT

Hello,

I am new to the MCUXPRESSO IDE and was exploring the "live variables" features. While doing so I encountered that when viewing a live variable "d" which is equal to addition of a few other variables all of type float, the value of d while the program is running is a random number.

When the program is paused/suspended , the value is displayed in the float format. Why is this happening?

Thank You,

Apurv.

Re: Problem while displaying a live variable of type float in MCUXPRESSO

lpcxpresso_supp — Wed, 03 Jul 2019 08:13:26 GMT

I have taken a look at this report in version 11.0.0 of MCUXpresso IDE and so far I have not duplicated your results.

Please can you clarify:

The version of the IDE you are using and the host OS?

The Debug probe and firmware you are using? e.g. OpenSDA CMSIS-DAP, JLink etc.

Whether you can demonstrate this with any global float or is the result of additions significant?

The 'random' number is almost certainly the conversion to decimal of the hex value of the variable - i.e. not the float interpretation of the mantissa and exponent.

Yours,

MCUXpresso IDE Support

Re: Problem while displaying a live variable of type float in MCUXPRESSO

maratheapurv — Fri, 05 Jul 2019 05:25:24 GMT

MCUXpresso IDE v11.0.0 , OS : WINDOWS 10

OpenSDA debugger

The images I had attached along with the query were of a global float

expression.

As you mentioned I too realized that it might be the decimal representation

of the generated hex number. So how do i get to display it in its float

form?

Thank You,

Apurv Marathe.

On Wed, Jul 3, 2019 at 1:44 PM lpcxpresso_support <admin@community.nxp.com>

Re: Problem while displaying a live variable of type float in MCUXPRESSO

maratheapurv — Fri, 05 Jul 2019 06:22:24 GMT

Also with the OPENSDA debugger I cannot perform real time operation ie. I

can view the variables in real time but cannot change their variables in

real time. Is this because I am using the open sda debugger? Can the real

time control be performed with a segger jtag debugger?

I am working with the FRDM-KV31F board which uses the KV31F512VLL12 uC.

Thank You for your time,

Apurv.

On Fri, Jul 5, 2019 at 10:55 AM apurv marathe <maratheapurv@gmail.com>

Re: Problem while displaying a live variable of type float in MCUXPRESSO

mohsin_butt — Fri, 15 Nov 2019 12:07:56 GMT

Hi,

any update on this issue. We are experiencing the same problem:

IDE: MCUXpresso IDE v11.0.0 [Build 2516] [2019-06-05]

Host: Windows 10 Pro

Debug-Probe: JLink

uController: MKL13Z64

Regards,

Re: Problem while displaying a live variable of type float in MCUXPRESSO

lpcxpresso_supp — Mon, 18 Nov 2019 06:26:48 GMT

Formatting of floating point numbers in conjunction with "live variables" will be fixed in the upcoming 11.1.0 release.

Greetings,
MCUXpresso IDE Support