Hi @bobpaddock and thaks for answer me.
I made a minimal version of my original code (without interrupts) to verify of there was a problem with a volatile variable I'm using, but the problem persist.
I have the LTO disabled.
Also append my code:
uint8_t FLASHVars[16];
__attribute__ ((section(".MyNonVolatileVars"))) uint8_t SystemNonVolatileVars[16] = {
[0] = 1,
[1] = 2,
[2] = 3,
[3] = 4,
[4] = 5,
};
flash_config_t s_flashDriver; ///<Variable que contiene la estructura de configuración del dirver para grabar en la memoria FLASH
uint16_t save = 0;
uint32_t cnt;
int main(void) {
/* Init board hardware. */
BOARD_InitBootPins();
BOARD_InitBootClocks();
uint8_t *ptrFLASH = &FLASHVars[0]; //create pointer of the info in ram
uint8_t *FlashAddress = &SystemNonVolatileVars[0]; //create pointer of the info in flash
uint32_t primaskValue = 0U;
memset(&s_flashDriver, 0, sizeof(flash_config_t));
FLASH_SetProperty(&s_flashDriver, kFLASH_PropertyFlashClockFrequency, CLOCK_GetFlashClkFreq());
FLASH_Init(&s_flashDriver);
for(uint8_t i = 0; i<16; i++) *ptrFLASH++ = *FlashAddress++; //copy the info in flash to RAM
while(1) {
if (save == 1) {
primaskValue = DisableGlobalIRQ(); //Disable interrupts
uint32_t FlashAddress = (uint32_t) (&SystemNonVolatileVars[0]); //get the direction of the first byte where the info is gonna be placed
FLASH_Erase(&s_flashDriver, FlashAddress, 16, kFLASH_ApiEraseKey); //erase the sector
uint8_t *dataPtr = (uint8_t *) (FLASHVars); //Get the direction of the first byte of info to save
FLASH_Program(&s_flashDriver, FlashAddress, (uint32_t *)dataPtr, 16); //save 16 bytes on FlashAdrres
EnableGlobalIRQ(primaskValue); //Enaable interrupts
save = 0;
}
cnt++; //dummy
}
return 0;
}The idea of my code is refresh the "FLASHVars" array and when certain action ocurrs save that info into de the flash.
To set the memory area where the info is gonna be saved I used the MCU Settings to split the memory.
And in the Debug.if file added this lines:
.myNonVolatileVarsBlock 0x00001FF0 :
{
KEEP(*(.MyNonVolatileVars)) /* keep my variable even if not referenced */
} > NonVolatileVars
Best Regards.
Hi @kerryzhou, thanks for answer me and sorry for the late response.
I don't have any errors when the project is built, the problem is when I'm debugging.
The problem is when I try to write the info in the flash.
Also append my code:
uint8_t FLASHVars[16];
__attribute__ ((section(".MyNonVolatileVars"))) uint8_t SystemNonVolatileVars[16] = {
[0] = 1,
[1] = 2,
[2] = 3,
[3] = 4,
[4] = 5,
};
flash_config_t s_flashDriver; ///<Variable que contiene la estructura de configuración del dirver para grabar en la memoria FLASH
uint16_t save = 0;
uint32_t cnt;
int main(void) {
/* Init board hardware. */
BOARD_InitBootPins();
BOARD_InitBootClocks();
uint8_t *ptrFLASH = &FLASHVars[0]; //create pointer of the info in ram
uint8_t *FlashAddress = &SystemNonVolatileVars[0]; //create pointer of the info in flash
uint32_t primaskValue = 0U;
memset(&s_flashDriver, 0, sizeof(flash_config_t));
FLASH_SetProperty(&s_flashDriver, kFLASH_PropertyFlashClockFrequency, CLOCK_GetFlashClkFreq());
FLASH_Init(&s_flashDriver);
for(uint8_t i = 0; i<16; i++) *ptrFLASH++ = *FlashAddress++; //copy the info in flash to RAM
while(1) {
if (save == 1) {
primaskValue = DisableGlobalIRQ(); //Disable interrupts
uint32_t FlashAddress = (uint32_t) (&SystemNonVolatileVars[0]); //get the direction of the first byte where the info is gonna be placed
FLASH_Erase(&s_flashDriver, FlashAddress, 16, kFLASH_ApiEraseKey); //erase the sector
uint8_t *dataPtr = (uint8_t *) (FLASHVars); //Get the direction of the first byte of info to save
FLASH_Program(&s_flashDriver, FlashAddress, (uint32_t *)dataPtr, 16); //save 16 bytes on FlashAdrres
EnableGlobalIRQ(primaskValue); //Enaable interrupts
save = 0;
}
cnt++; //dummy
}
return 0;
}The idea of my code is refresh the "FLASHVars" array and when certain action ocurrs save that info into de the flash.
To set the memory area where the info is gonna be saved I used the MCU Settings to split the memory.
And in the Debug.if file added this lines:
.myNonVolatileVarsBlock 0x00001FF0 :
{
KEEP(*(.MyNonVolatileVars)) /* keep my variable even if not referenced */
} > NonVolatileVars
Thanks.
Best Regards.
Hi @myke_predko, thanks and sorry for the late response.
This is the memory with the -Os optimization
And without the -Os
To set the memory area where the info is gonna be saved I used the MCU Settings to split the memory.
And in the Debug.if file added this lines:
.myNonVolatileVarsBlock 0x00001FF0 :
{
KEEP(*(.MyNonVolatileVars)) /* keep my variable even if not referenced */
} > NonVolatileVarsAlso append my code:
uint8_t FLASHVars[16];
__attribute__ ((section(".MyNonVolatileVars"))) uint8_t SystemNonVolatileVars[16] = {
[0] = 1,
[1] = 2,
[2] = 3,
[3] = 4,
[4] = 5,
};
flash_config_t s_flashDriver; ///<Variable que contiene la estructura de configuración del dirver para grabar en la memoria FLASH
uint16_t save = 0;
uint32_t cnt;
int main(void) {
/* Init board hardware. */
BOARD_InitBootPins();
BOARD_InitBootClocks();
uint8_t *ptrFLASH = &FLASHVars[0]; //create pointer of the info in ram
uint8_t *FlashAddress = &SystemNonVolatileVars[0]; //create pointer of the info in flash
uint32_t primaskValue = 0U;
memset(&s_flashDriver, 0, sizeof(flash_config_t));
FLASH_SetProperty(&s_flashDriver, kFLASH_PropertyFlashClockFrequency, CLOCK_GetFlashClkFreq());
FLASH_Init(&s_flashDriver);
for(uint8_t i = 0; i<16; i++) *ptrFLASH++ = *FlashAddress++; //copy the info in flash to RAM
while(1) {
if (save == 1) {
primaskValue = DisableGlobalIRQ(); //Disable interrupts
uint32_t FlashAddress = (uint32_t) (&SystemNonVolatileVars[0]); //get the direction of the first byte where the info is gonna be placed
FLASH_Erase(&s_flashDriver, FlashAddress, 16, kFLASH_ApiEraseKey); //erase the sector
uint8_t *dataPtr = (uint8_t *) (FLASHVars); //Get the direction of the first byte of info to save
FLASH_Program(&s_flashDriver, FlashAddress, (uint32_t *)dataPtr, 16); //save 16 bytes on FlashAdrres
EnableGlobalIRQ(primaskValue); //Enaable interrupts
save = 0;
}
cnt++; //dummy
}
return 0;
}The idea of my code is refresh the "FLASHVars" array and when certain action ocurrs save that info into de the flash.
Thanks.
Best Regards.
