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I have a structure.
struct TelemPackStruct
{
uint32_t tmMarker;
float32_t wx ;
float32_t wy ;
float32_t wz ;
float32_t m1 ;
float32_t m2 ;
float32_t m3 ;
float32_t q0 ;
float32_t q1 ;
float32_t q2 ;
float32_t q3 ;
struct BinData{
uint32_t seconds :32;
uint32_t indication :8;
uint32_t mode :8;
uint32_t modeArea :8;
}binDataTM;
};I need to save this type of structure every second with different values in the emif.
I enabled the emif in the Halcogen (sdram, async1,2,3, pinmux, driver).
I modified the linker file :
MEMORY
{
VECTORS (X) : origin=0x00000000 length=0x00000020
KERNEL (RX) : origin=0x00000020 length=0x00008000
FLASH0 (RX) : origin=0x00008020 length=0x001F7FE0
FLASH1 (RX) : origin=0x00200000 length=0x00200000
STACKS (RW) : origin=0x08000000 length=0x00000800
KRAM (RW) : origin=0x08000800 length=0x00000800
RAM (RW) : origin=(0x08000800+0x00000800) length=(0x0007F800 - 0x00000800)
/* USER CODE BEGIN (2) */
SDRAM (RXW) : origin=0x80000000 length=0x007FFFE0
/* USER CODE END */
}and
SECTIONS
{
.intvecs : {} > VECTORS
/* FreeRTOS Kernel in protected region of Flash */
.kernelTEXT align(32) : {} > KERNEL
.cinit align(32) : {} > KERNEL
.pinit align(32) : {} > KERNEL
/* Rest of code to user mode flash region */
.text align(32) : {} > FLASH0 | FLASH1
.const align(32) : {} > FLASH0 | FLASH1
/* FreeRTOS Kernel data in protected region of RAM */
.kernelBSS : {} > KRAM
.kernelHEAP : {} > RAM
.bss : {} > RAM
.data : {} > RAM
/* USER CODE BEGIN (4) */
.telem : {} > SDRAM
/* USER CODE END */
}I defined an array of structs
#define NUM_OF_PACKS 1024
struct TelemPackStruct telemetry [NUM_OF_PACKS] __attribute__((section(".telem")));The problem i found is the following.
__attribute__((section(".telem"))) volatile struct TelemPackStruct telemetry [NUM_OF_PACKS];
void foo(){
volatile struct TelemPackStruct tmToRead;
//filling tmToRead
telemetry[0]=tmToRead;
//telemetry[0].q1=tmToRead.q1; does the same problem
}When i try to write telemetry[0] that is stored in the EMIF, it writes only one variable (not single in the structure) and writes it on the WHOLE SDRAM (include ).
Hello Roman,
I tested on my LC43x board, could not produce the problem. What is your EMIF configuration and MPU settings?
What helped me here is..
its the default in halcogen. What i changed when i downloaded your project is the TYPE. DOnt realy know why this is important to change it but.. i changed and it worked.
Changed to 
