Hi,
I am somehow stuck with a seemingly simple task.
I have already set up a quite big simulation model of a phase shifted full bridge converter, first with analog control, then I adapted RDunn/KSKelvin’s PID controller algorithm to a 2p2z one, which works fine.
Now I wanted to implement the effect the sample and hold has on the phase of the control loop, but I can’t get it working. First I tried to implement it in my 2p2z C code which didn’t work, so I tried to do it on a minimal working example.
I created the code with the structure template and wrote the code similar to the C Code Block Basics.
I expect the output to assert the input value at each rising edge of the clock, but nothing happens, it just stays low.
When I remove the “”&& inst->clk_n1" part of the if statement, the output is equal to the input for the high duration of the pulse. So I assume something is not working with the edge detection in the if statement?
But what could it be, can anyone help me?
#include <malloc.h>
extern "C" __declspec(dllexport) void (*bzero)(void *ptr, unsigned int count) = 0;
union uData
{
bool b;
char c;
unsigned char uc;
short s;
unsigned short us;
int i;
unsigned int ui;
float f;
double d;
long long int i64;
unsigned long long int ui64;
char *str;
unsigned char *bytes;
};
// int DllMain() must exist and return 1 for a process to load the .DLL
// See https://docs.microsoft.com/en-us/windows/win32/dlls/dllmain for more information.
int __stdcall DllMain(void *module, unsigned int reason, void *reserved) { return 1; }
// #undef pin names lest they collide with names in any header file(s) you might include.
#undef in
#undef out
#undef clk
struct sSNH
{
// declare the structure here
bool clk_n1; // clk[n-1]
};
extern "C" __declspec(dllexport) void snh(struct sSNH **opaque, double t, union uData *data)
{
double in = data[0].d; // input
bool clk = data[1].b; // input
double &out = data[2].d; // output
if(!*opaque)
{
*opaque = (struct sSNH *) malloc(sizeof(struct sSNH));
bzero(*opaque, sizeof(struct sSNH));
}
struct sSNH *inst = *opaque;
// Implement module evaluation code here:
if (clk && !inst->clk_n1)
{
out=in;
inst->clk_n1 = clk;
}
}
extern "C" __declspec(dllexport) void Destroy(struct sSNH *inst)
{
free(inst);
}
