RTOS/CC1310: CC1310 writing into flash potential problem

You cannot read flash during flash write, so you'd have to disable all interrupts during write, or move your ISRs (and every function they call) into ram.

Also ensure that you disable the flash cache first.

I use the following when writing to flash in my application:

// from 

#define FLASH_PAGE_SIZE  4096U
#define FLASH_START(page) \
	int32_t result = 0; \
	/* Disable the cache */ \
	VIMSModeSet(VIMS_BASE, VIMS_MODE_DISABLED); \
	while (VIMSModeGet(VIMS_BASE) != VIMS_MODE_DISABLED); \
	\
	/* Make sure that sector isn't write protected. */ \
	result = FlashProtectionGet((uint32_t) (page)); \
	if (result == FLASH_WRITE_PROTECT) \
	{ \
		VIMSModeSet(VIMS_BASE, VIMS_MODE_ENABLED); \
		return -1; \
	} \
	\
	/* Disable all interrupts when accessing the flash */ \
	CPUcpsid();

#define FLASH_END() \
	CPUcpsie(); \
	\
	/* Re-enable the cache */ \
	VIMSModeSet(VIMS_BASE, VIMS_MODE_ENABLED); \
	\
	return result;

int FlashStorage_Erase(FlashPage* page) {
	FLASH_START(page);

	/* Erase a flash Page */
	result = FlashSectorErase((uint32_t) page);

	FLASH_END();
}

int FlashStorage_Write(uint8_t* buffer, unsigned bufferLength, void* location) {
	FLASH_START(((uintptr_t) location) & (~(FLASH_PAGE_SIZE - 1)));

	for (uint8_t i = 0; i < bufferLength; i += 4)
	{
		/* Write to flash */
		result = FlashProgram(&buffer[i], ((uint32_t) location) + i, 4);

		if (result != FAPI_STATUS_SUCCESS)
			break;
	}

	FLASH_END();
}

Also remember that you cannot write a 1 into flash - you can only erase an entire block, or change 1s to 0s.