Part Number: TMS320C6657
Tool/software: TI-RTOS
Hello Experts,
i am facing a problem with copiying data from one location to another one.
I will give an example for understanding:
Task is to see a ramp in the buffers up/down.
in configfile app.cfg
Program.sectMap[".far:src"] = "MSMCSRAM"
Program.sectMap[".far:dest"] = "MSMCSRAM"
in file1.c:
extern far int16_t src; /*from Modul file2.c*/
#pragma DATA_SECTION(dest,".far:dest");
#pragma DATA_ALIGN(dest,64);
int16_t dest[Size];
void Task1() //running on Core0, with lets say 100ms Cycletime
{
memcopy(src,dest,sizeof(src);
sendviaTCP(dest);
}
in file2.c
#pragma DATA_SECTION(src,".far:src");
#pragma DATA_ALIGN(src,64);
int16_t src[Size];
void Task2()/*running on Core 1 lets say 25ms Cycletime*/
{
int toggle;
if(toggle)
{
for(i=0;i<size;i++)
{
src[i]=i;
}
}
else
{
for(i=0;i<size;i++)
{
src[i]=size-i;
}
}
Toggle();
}
i tried using semaphore to prevent accidential access to the buffers in the following manner:
CSL_semAcquireIndirect(4); /*Request Semaphore 4 in Request Queue*/
do{
SemOwner=CSL_semGetResourceOwner(4); /*check if Core 1 has the sem*/
isFree=CSL_semIsFree(4); /check if sem is free*/
}while((SemOwner!=1)&&(0==isFree));
Unfortunatelly i see broken ramps, mixed up and down in one frame.
I believe its my misunderstanding in memory access, so where can i get appropriate datasheet or information please?
regards Martin
