Level of indirection code#

Struct1_ptr = &struct1 //save the address of struct1 in the pointer '->' is a dereference pointer and select element/membor. '.' is element/member selector and is used directly on structs: SetHundred(myStructs) //using the function on first array member It is to do exactly what you are trying to do. On this you can pass a pointer 'to' a function, but then use it inside the function without having to de-reference it, to operate directly on the original variable. Has to be directly 'to' a variable.īy reference pointer, is for things like structures. CCS offers it, but with limited abilities. And I could make multiple structs insteads of an array of structs but that would make looping over them harder (aka, harder to scale).īut if by pointer will work fine I will just use that.Īnd about the operator, what is the difference between '.' and '->' as an operator?īy reference, is not a C ability.

Level of indirection code#

In the past I have used this code (button debounce with passing by reference) multiple times without a problem but always on a single button. But this is still an old project I want to revise which means, reprogramming the PIC.īut you say this can't be done by reference in CCS C? I did it by reference instead of pointer because I think it just looks cleaner to call something like myFunction(instance) then to have to add the address operator. I'm indeed more of a C++ guy I started with PIC but moved to AVR (or ARM now) because of the open tool chains. CCS happens to automatically treat a fixed index to such a sub element in the same way, but not with a variable, and it is honestly a little bit dangerous was to work.įor(byte i = 0 i instead of '.' to access the sub variable)?. This is only described in K&R, to work directly with the array name, not with a 'sub element' of the array. myStructs, is a shortcut to the address of the array. That is why you can access an element in such a reference directly. MyStructs, is a structure of type _myStruct, not a pointer to such a structure. You are having a problem because of C shortcuts, and getting misled about what they can do. but this gives me the 'Different levels of indirection'-error SetHundred(myStructs) //using the function on a array member, no error MyStructs.one = 2 //normal struct set, no problem #use delay(clock=4000000) //set clock speed

#fuses INTRC_IO,NOWDT,NOPROTECT,PUT, NOMCLR, BROWNOUT //internal clock, no watchdog, no code protection, power up timer, Mater Clear pin used for I/O, brownout protection Of course my project is a bit bigger (but I wouldn't call it big) but I made a small example which gives the same error. No problem there but once I make an array of structs and try to loop over each I'm stuck with the error. In my project I want to pass a struct to a function. Send them to levels of indirectionĪfter some time not working with PICs I tried to make a new program for an older project. Please do not post bug Reports on this forum. CCS :: View topic - Different levels of indirectionįAQ Forum Help Official CCS Support Search Register Profile Log in to check your private messages Log inĬCS does not monitor this forum on a regular basis.