How to use DMA or UART in sys/bios

user4263705

Intellectual 530 points

Other Parts Discussed in Thread: SYSBIOS

Hi all

I am a new guy to use DSP.

In sys/bios, I can found many modules such as TASK/Hwi/Swi/Timer/Clcok/Semaphore ……

but how to use UART or DMA in sys/bios? I have not found any document about that

does Ti offered some library functions to support these modules?

can anyone give some document about that?

when I try to use UART interrupt in sys/bios hwi module

the console will print an error,here is the error information:

ti.sysbios.family.c64p.Hwi ti.sysbios.family.c64p.Hwi.Instance#0: eventId (148) must be less than 128 .xdchelp /ompmec 307 C/C++ Problem

but in the datasheet there is the event number of UART ,it indeed 148,here is screenshot

I think I must got some misunderstand about this

Please give me some guide.

Thank you

Best Regards

Yewkui Wang

over 10 years ago

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Hi,
What is your EVM board and processor ?
I presume that you referring the C6678 DSP.

You can get come platform UART stuff in the following link, take this code as reference for your developments.

C:\ti\pdk_C6678_1_1_2_6\packages\ti\platform\evmc6678l\platform_lib\src\evmc66x_uart.c

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Hi Yewkui ,

ti.sysbios.family.c64p.Hwi ti.sysbios.family.c64p.Hwi.Instance#0: eventId (148) must be less than 128 .xdchelp /ompmec 307 C/C++ Problem

It seems you are referring the C64x DSP processor.
Please confirm what processor are you using ?

0 Raja over 10 years ago in reply to Titusrathinaraj Stalin

TI__Guru* 81335 points

Hi,
Please refer below wiki link for configuring interrupt on keystone devices.
processors.wiki.ti.com/.../Configuring_Interrupts_on_Keystone_Devices

Please refer the interrupt based examples from below e2e link,
CSL based - e2e.ti.com/.../627981
BIOS based - e2e.ti.com/.../588221
Thank you.

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How to use DMA or UART in sys/bios