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Hi Guys,

I am using dsPIC33ECP512MU814 micro with CCS compiler v5.0.30.
What I am trying to do is read 8 ADC channels (4 channels Simultaneously each time) and let DMA fill those readings to my bu ...

Very valuable point, Ttelmah. I will be wary of that and do explicit cast just in case like you said.
I do appreciate your great help and I learnt a lot.

Kind Regards
Mark

Thanks Ttelmah. That makes sense. I do appreciate for your help~ Smile

No.

That's why I made it a _pointer_ to an 'int16'.

The compiler then knows it is dealing with an int16 value. Smile

Yes, Ttelmah. You are right. If you use pointer to int16, then that should be ...

Whoops~~So that means I don't need to take care of the pin number and its masking, that is very good, I will use that. Thanks for your help, Ttelmah. Very Happy

EDIT: I just doubt if that bit_test gonn ...

_char_ bitmask......

Thanks Ttelmah,
I just got it works, my previous code has a bug in it. Just re-put it on.

char input_pin_state(int16 ccs_pin)
{
int16 io_port;
cha ...

Hi HWGonly1

I am also a newbee or say a little old newbee with CCS compiler. Not sure for your question, but:

1. It is better you tell people what microcontroller you are using and what is the v ...

Hi guys,

I just tried the method in that thread provided by "ckielstra", it works.
Shift that number right to 3 bits means divided by 8, which will give us the port address, just a littl ...

Hi guys,

I searched that thread, and the last second poster by ckielstra is useful, but I am still not sure if it works for dsPIC33EP512MU814.

http://www.ccsinfo.com/forum/viewtopic.php?t=46396 ...

compiler is telling you it expects a constant for input_state()'s
argument. it is only able to accept a "pin" argument as a CONST at compile time, not in runtime with VARS .

you have fe ...

Hi everyone,

I am using dsPIC33EP512MU814 with CCS compiler v5.016

What I am trying to do is to read the states of pins and then process. For easy coding, I put the pins I want to read in a arra ...

OK.

I don't think you can declare the pointers at compile time.
Historically, CCS didn't support this at all.

Then with V5, they started allowing it for 'variables', so an array name could be p ...

Key is in the understanding that there are two address spaces.

Hence the compiler has to _know_ that a pointer to rom, _is_ a pointer to rom....

So it allows a pointer to be declared as:

unsi ...

Hi guys,

I know the question must be silly and I always get confused when I play with pointer (In fact, the pointer play with me!). I searched this forum and didn't get my answer.
I am using dsPIC ...

I am not sure if am I right, but at least you need to initialize the hardware such as tell uC the port direction Rolling Eyes

and after that, you could disconnect the led, just use multimeter to measure i ...