PROCESSOR-SDK-DRA7X: How can I get the value of hardware register under the RTOS environment.

AllenHsu

Intellectual 980 points

Part Number: PROCESSOR-SDK-DRA7X

Hi,

I want to access directly hardware register In the RTOS environment.

In the Linux environment, I have used Linux API ioremap to obtain the virtual address for the hardware register.

In the RTOS environment, what is the API corresponding to ioremap ?

Thanks.

over 4 years ago

0 Dwarakesh Radhakrishnan over 4 years ago

Guru 13630 points

Hi AllemHsu,

You should be able to directly assign it to a pointer and deference it and assign values to it.

For reading example:

uint32_t regVal = *(volatile uint32_t *) addr;

For writing :

*(volatile uint32_t *) addr = value;

Or better would be include <ti/csl/hw_types.h>

and call APIs like following:

HW_RD_REG32(addr)

HW_WR_REG32(addr, value)

0 Yordan Kamenov over 4 years ago in reply to Dwarakesh Radhakrishnan

TI__Mastermind 42515 points

Hi @AllenHsu,

you can look at PROCESSOR_SDK_VISION_03_07_00_00/ti_components/drivers/pdk_01_10_03_07/packages/ti/csl/docs/doxygen/html/hw__types_8h.html for documentation of the APIs suggested by Dwarakesh.

Regards,

Yordan

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PROCESSOR-SDK-DRA7X: How can I get the value of hardware register under the RTOS environment.