tm4c123 - software interrupt

Mathieu L.

Hi,

can the tm4c123 handle "software" interrupt? and if so is there any example? Because, all the example concern about external or "hardware" interrupt like a change in voltage level.

over 10 years ago

0 Amit Ashara over 10 years ago

TI__Guru**** 244440 points

Hello Mathieu,

I don't have a simple example as reference, but I have used IntTrigger to jump start peripherals once configured.

Regards
Amit

0 Mathieu L. over 10 years ago in reply to Amit Ashara

Expert 1630 points

Is there any way to increase speed in USB? Because software interrupt don't seem to be the solution. Right now, I got a rate of 5.4 mb/s, but I don't see how I can increase the speed of transfer. I request larger sample on window side and I currently have the Bulk size of 512 bytes and I max out the system clock. In theory, USB max speed can over 9 mb/s. Personnaly, I don't need such speed, I just need to get around 6 mb/s.

0 Amit Ashara over 10 years ago in reply to Mathieu L.

TI__Guru**** 244440 points

Hello Mathieu,

I think this has been suggested earlier as well. Did you try using the double buffered FIFO?

Regards
Amit

0 Mathieu L. over 10 years ago in reply to Amit Ashara

Expert 1630 points

Hi,

I did try it but a variable wasn't define in the post. You can check the other post for more info.

0 Amit Ashara over 10 years ago in reply to Mathieu L.

TI__Guru**** 244440 points

Hello Mathieu,

BTW, how is the USB got to do with the IntTrigger? And which post is being referred to?

Regards
Amit

0 Mathieu L. over 10 years ago in reply to Amit Ashara

Expert 1630 points

Hi,

I thought about when my buffer is fill, I could raise a USB interrupt to start the transmission and therefore make my code more efficient. The post I am refering too is the following:
e2e.ti.com/.../429199

0 Amit Ashara over 10 years ago in reply to Mathieu L.

TI__Guru**** 244440 points

Hello Mathieu,

I would suggest getting away from the usblib if the sole intention is to get higher data rates and implement the process using the usb.c/usb.h library function call.

Regards
Amit

0 Mathieu L. over 10 years ago in reply to Amit Ashara

Expert 1630 points

Hi,

you talk about the USB API from driverlib right?

0 Amit Ashara over 10 years ago in reply to Mathieu L.

TI__Guru**** 244440 points

Hello Mathieu,

Yes, that is correct.

Regards
Amit

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tm4c123 - software interrupt