Thanks for you help.
This is the code:
#include "SYS_Cpu.h"
#include "SYS_types.h"
#define FPGA_CTRL_REG (*(volatile unsigned short * ) (0x050004))
//------------------------------------------------------------------------------
void main(void);
//------------------------------------------------------------------------------
void main(void)
{
unsigned long i;
for( ;; )
{
P1DR |= 0x08;
for( i =0; i!=500000; i++)
{
}
FPGA_CTRL_REG=0x0000;
P1DR &= ~0x08;
for( i =0; i!=500000; i++)
{
}
FPGA_CTRL_REG=0x0004;
}
}
AWBCR is set during init with:
ABWCR &= ~0x01;
I just had a little breakthrough by changing
#define FPGA_CTRL_REG (*(volatile unsigned short * ) (0x050004))
to
#define FPGA_CTRL_REG (*(volatile unsigned short __evenaccess * ) (0x050004))
this solved the problem, but I don't understand why this is neccessary and I think that there should be a better solution.
Besides from debugging this on target I also debug this with the SimSessionH8S-2000A debugger. In the Memory resources I set the address range from 0x050000 to read only. That way I get an Memory access error when running the programm which shows me exactly which memory addresses are accessed. With the original code I get a Memory access error on the addresses H' 00050004 and H' 00050005, but when I add the __evenaccess option it only access H' 00050004.
I was also in the opinion like you said that the µC will translate the bus access, but in my case the compiler already generated code that accesses two addresses.
I hope somebody can tell me what I am doing wrong so bus translation is handled by the µC.
