Assembly and C

	PSOC_Canada posted on 23 Sep 2011 7:34 AM PST Senior Member 15 Forum Posts

I am using CY8C27443-24PXI and developing code in C.

At this point I want to make function call from main C code and I want to write function in assembly.

Please suggest how can I do it.

Regards,

Re: Assembly and C

	pmad posted on 25 Sep 2011 10:19 PM PST Cypress Employee 154 Forum Posts

When you are declaring the function in assembly then make sure you have "_" appended in front of the function name. When you are appending "_" in front of the function name then you can call the function from C files. An example given below first of all exports the function for other assembly and C files. "_MyFunc_Start" is for the C files and "MyFunc_Start" is for assembly files. Similarly at the time of definitiion as well, we have to use two names to make this name accessible to both assembly and C files.

Please note that from C file as well, you have to call the function with name MyFunc_Start only.

export _MyFunc_Start

export MyFunc_Start

SmartSense_Start:

_SmartSense_Start:

; Your function code

ret

Once done, you can give the prototype of the function in a header file or the c file in which you want to call this function.

Best regards,

Pushek

Re: Assembly and C

	pmad posted on 25 Sep 2011 10:20 PM PST Cypress Employee 154 Forum Posts

Please note that from C file as well, you have to call the function with name MyFunc_Start only.

export _MyFunc_Start

export MyFunc_Start

MyFunc_Start:

_MyFunc_Start:

; Your function code

ret

Once done, you can give the prototype of the function in a header file or the c file in which you want to call this function.

Best regards,

Pushek

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Assembly and C

Re: Assembly and C

Re: Assembly and C