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Re: How to fix "*** [obj/flash_board_cstartup.o] Error 2"

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i'm sorry for delay.

i have still this problem

2.jpg

 

i install many plug-in but still remain this problem ??

 

3.jpg


Ne10向社区开放代码贡献

Re: Tribute to Charlie Hebdo's members

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I was talking with a colleague yesterday.

My generation remembers Cabu very well from the Club Dorothée.

 

I'll be observing silence today at 12pm CET.

Re: Tribute to Charlie Hebdo's members

Re: SPI interfacing using ARM cortex M4

Re: Mali GPU TCT: Cannot run on alpha mask image?

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-esw r000 should be a valid command line argument, so my first guess would be that the user interface was sending several arguments and they don't work in the order it's chosen. A little check on my side shows that even a default swizzle (-esw rgba) is returning the same fault. I don't think you've used the tool wrong, one of the interesting aspects of the ASTC format is that any image can be compressed as though it were HDR or SRGB, it's just about how the colourspace is interpreted.

 

I'll see if I can find out why some arguments are hitting the command line wrong.

 

In the mean time it's worth noting that due to the way ASTC works, since the images are greyscale there is no compression advantage to an r000 swizzle, you should get exactly the same image quality by compressing it as is and then sampling red only in your shader.

 

-Stacy

Re: Mali GPU TCT: Cannot run on alpha mask image?

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If the output has only one useful channel anyway, is there a way to output a single channel luminance texture for this input?

Re: Mali GPU TCT: Cannot run on alpha mask image?

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Chris, the way ASTC works it makes no difference. Regardless of input format every ASTC output image is essentially RGBA.


Re: Mali GPU TCT: Cannot run on alpha mask image?

Re: SPI interfacing using ARM cortex M4

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Alban is right. Please post this question in the ST Micro forum.

Meanwhile, if not done already, go through the datasheets of RDM-A4FZ and the STM32F407 used in the discovery board. Also go through the HAL from STMicroelectronics which has drivers and API calls for the SPI.

 

You will need to select which SPI port of your MCU to use and then connect those to your peripheral. MOSI to MISO and vice versa (Data in to Data Out - cross connection), Clock to clock and a ground pin. You may also need a Chip select signal.

Re: Tribute to Charlie Hebdo's members

Re: How to create a 7000hz signal from PWM ?

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Hello!

PwmOut - Handbook | mbed should give you a few pointers:

 

#include "mbed.h"

PwmOut led(LED2);

int main() {
    // specify period first, then everything else    led.period(0.00014285f);  // 1.4285e-4 second period is 7kHz    led.write(0.50f);  // 50% duty cycle    while(1);          // led flashing
}

Re: How to create a 7000hz signal from PWM ?

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Thanks for the code Alban Rampon but how did the fraction of second could be calculate ?  i have some difficulty to understand this point

Re: How to create a 7000hz signal from PWM ?

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This function wants the period:

632f57e2-d902-41a8-b64e-c253333a80cf.png 

Re: How to create a 7000hz signal from PWM ?


Re: How to create a 7000hz signal from PWM ?

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Explained like this is very easy ! thank you

Re: Mali-400 functioning with software stack running on Cortex-A53 AARCH64 Linux OS.

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Thanks Michael for your elaborated reply.

How can one start a new line easily after pasting in a link?

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There's a particular annoyance I have a work around for, but I wonder if there's a proper way of doing this that I'm just missing?

 

If I'm typing something into the editor and then paste a link at the bottom, I'm not able to type any more text after the link. The editor insists on adding any new text at the end of the text in the link.

 

http://community.arm.com/welcome    -  any text at the end of the message then comes out

like this even when I put in new lines

 

I get round it by putting in another blank line and pasting the link before the blank line at the end, but if the message ends with a link is there a better way of getting a clean line after it?

Re: How can one start a new line easily after pasting in a link?

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Hi Daith,

It might be browser dependant. With older Chrome versions, I used to be able to paste a link, then press space and start unlinked text.

With the latest one, I put my caret at the end of the link, press Enter and the new line is not linked.

 

Which browser do you use? I'd like to reproduce it.

Re: CTRLSTAT = 0xffffffff

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It looks like you've come a long way.

I think, that at this time you may know much more about all this than I do.

-So I think we'll need to call for a SWD-expert in this case.

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