Where are ISR and Callback function in PSP driver？

Hi yin yu,

Can you please confirm which version of the BIOSPSP you are using?. And, which PSP driver are you referring to?.

Thanks & regards,

Raghavendra

BIOS:bios_5_31_02;CCS:CCStudio_v3.3;DVSDK:dvsdk_1_01_00_15 ;PSP:psp_1_00_02_00

Hi yin yu,

The driver architecture is divided into different driver components:

And to be precise,

DDA (Device driver adaptation)

-          The DDA module (Works closely with the OS) implements functionalities to hookup to a driver and receive read and write requests from the application through OS.

DDC (Device  driver core)

-          The DDC layer implements the device driver functionality. The DDC layer handles functionalities such as initialization, open, close, read, write and device configuration.

LLC (Low level controller)

-          LLC implements the functionalities to configure the hardware module to perform basic device operations such as physical write, physical read and initializations.

You can always refer to section 1.2 Driver Software Architecture of PSP_User_Guide.pdf for more details regarding this.

Hence, the interrupt registration of the drivers are done in the DDA layer, and the corresponding Interrupt service routine can be found in the DDC layer. And the callback functions are called from the ISR's. Please refer the driver files in regards to registration of interrupts (dda_XXBios.c and ddc_XX.c files).

Secondly, can you please elaborate "I want to configure ISR in the DSP/BIOS Config in the ccs3"??.. you mean in the .tcf file?. And for which driver you want to configure the ISR in DSP/BIOS config?.

Thanks & regards,

Raghavendra

for example：Mcbsp，how I to define the Mcbsp's ISR, and  where I should to add the ISR?