I want to know is there in method to align the indivialial variable declared is such way that blow variable can be moved
to some section of RAM memory,
I want align below variable to RAM memory section to 0x40005000
volatile real32_T Main_KD = 6.0F; RAM address = 0x40005000
volatile real32_T Main_KD_limit = 1.0F; RAM address = 0x40005004
volatile real32_T Main_KP1 = 4.0F; RAM address = 0x40005008
volatile real32_T Main_KP2 = 2.0F; RAM address = 0x4000500C
volatile real32_T Main_KP_conv1 = 0.15F; so on
volatile real32_T Main_KP_conv2 = 1.0F;
volatile real32_T Main_Threshold_off = 1.0F;
volatile real32_T Main_Threshold_on = 2.0F;
volatile real32_T Main_deadbandA = 0.0F;
volatile real32_T Main_deadbandB = 0.0F;
Hi,
which device and which IDE do you use?
Regards,
Lukas
Hello Luncas,
I’m using the MPC5553 controller with codewarrior IDE v2.8 for developing the software.
-Vikas
Here is simple example which I copied from some old test project.
In linker file:
MEMORY
{
...
my_ram: org = 0x40030000, len = 0x0000C000 //just example, use addresses you need
...
}
SECTIONS
{
...
.__my_ram: {} > my_ram
...
}
In *.c file:
#pragma push
#pragma section all_types ".__my_ram" ".__my_ram" data_mode=far_abs
volatile unsigned int data1;
volatile unsigned int data2;
volatile unsigned int data3;
#pragma pop
The order of data1, data2, data3 in RAM will be the same as order in this section. You can check it in the map file.
Regards,
Lukas
Thanks for help, now I could manage the RAM memory addressing as per my need.