Hi,
I am using the nRF Connect SDK 2.6.1 with the nRF5340 board.
I referred to the soc_flash_nrf example to read and write data into flash.
I need to overwrite data at the same offset, but when I try this in the soc_flash_nrf example, I don't get the updated value after reading from the same offset,I still see the previously written value when i read it from same offset.
How can I properly overwrite data at the same offset?
using flash_erase(flash_dev, offset,sizeof(uint32_t)) i try to erase the flash but i got the Flash erase failed.
#define TEST_PARTITION storage_partition
#define TEST_PARTITION_OFFSET FIXED_PARTITION_OFFSET(TEST_PARTITION)
#define TEST_PARTITION_DEVICE FIXED_PARTITION_DEVICE(TEST_PARTITION)
#define FLASH_PAGE_SIZE 4096
#define TEST_DATA_WORD_0 0x11
#define TEST_DATA_WORD_1 0xaabb
#define TEST_DATA_WORD_2 0xab
#define TEST_DATA_WORD_3 0x12
#define FLASH_TEST_OFFSET2 0x41234
#define FLASH_TEST_PAGE_IDX 37
#define DATA_TO_WRITE 0xDEADBEEF
int main(void)
{
const struct device *flash_dev = TEST_PARTITION_DEVICE;
uint32_t buf_array_1[4] = { TEST_DATA_WORD_0, TEST_DATA_WORD_1,
TEST_DATA_WORD_2, TEST_DATA_WORD_3 };
uint32_t buf_array_2[4] = { TEST_DATA_WORD_3, TEST_DATA_WORD_1,
TEST_DATA_WORD_2, TEST_DATA_WORD_0 };
uint32_t buf_array_3[8] = { TEST_DATA_WORD_0, TEST_DATA_WORD_1,
TEST_DATA_WORD_2, TEST_DATA_WORD_3,
TEST_DATA_WORD_0, TEST_DATA_WORD_1,
TEST_DATA_WORD_2, TEST_DATA_WORD_3 };
uint32_t buf_word= 0;
uint32_t i, offset;
printf("\nNordic nRF5 Flash Testing\n");
printf("=========================\n");
if (!device_is_ready(flash_dev)) {
printf("Flash device not ready\n");
return 0;
}
printf("\nTest 1: Flash erase page at 0x%x\n", TEST_PARTITION_OFFSET);
if (flash_erase(flash_dev, TEST_PARTITION_OFFSET, FLASH_PAGE_SIZE) != 0) {
printf(" Flash erase failed!\n");
} else {
printf(" Flash erase succeeded!\n");
}
printf("\nTest 2: Flash write (word array 1)\n");
//for (i = 0U; i < 4; i++)
{
offset = TEST_PARTITION_OFFSET;
printf(" Attempted to write %x at 0x%x\n", buf_array_1[0],
offset);
if (flash_write(flash_dev, offset,&buf_array_1[0],
sizeof(uint32_t)) != 0) {
printf(" Flash write failed!\n");
return 0;
}
printf(" Attempted to read 0x%x\n", offset);
if (flash_read(flash_dev, offset, &buf_word,
sizeof(uint32_t)) != 0) {
printf(" Flash read failed!\n");
return 0;
}
//for (i = 0U; i < ARRAY_SIZE(buf_array_1); i++)
{
printf(" Data read: %x\n",buf_word);
}
buf_word = 0;
if (flash_erase(flash_dev, offset,sizeof(uint32_t)) != 0) {
printf(" Flash erase failed!\n");
} else {
printf(" Flash erase succeeded!\n");
}
offset = TEST_PARTITION_OFFSET;
printf(" Attempted to write %x at 0x%x\n", buf_array_1[1],
offset);
if (flash_write(flash_dev, offset,&buf_array_1[1],
sizeof(uint32_t)) != 0) {
printf(" Flash write failed!\n");
return 0;
}
printf(" Attempted to read 0x%x\n", offset);
if (flash_read(flash_dev, offset, &buf_word,
sizeof(uint32_t)) != 0) {
printf(" Flash read failed!\n");
return 0;
}
//for (i = 0U; i < ARRAY_SIZE(buf_array_1); i++)
{
printf(" Data read: %x\n",buf_word);
}
buf_word = 0;
offset = TEST_PARTITION_OFFSET+(1<<2);
printf(" Attempted to write %x at 0x%x\n", buf_array_1[3],
offset);
if (flash_write(flash_dev, offset,&buf_array_1[3],
sizeof(uint32_t)) != 0) {
printf(" Flash write failed!\n");
return 0;
}
if (flash_erase(flash_dev, offset, 4) != 0) {
printf(" Flash erase failed!\n");
} else {
printf(" Flash erase succeeded!\n");
}
offset = TEST_PARTITION_OFFSET;
printf(" Attempted to write %x at 0x%x\n", buf_array_1[2],
offset);
if (flash_write(flash_dev, offset,&buf_array_1[1],
sizeof(uint32_t)) != 0) {
printf(" Flash write failed!\n");
return 0;
}
printf(" Attempted to read 0x%x\n", offset);
if (flash_read(flash_dev, offset, &buf_word,
sizeof(uint32_t)) != 0) {
printf(" Flash read failed!\n");
return 0;
}
//for (i = 0U; i < ARRAY_SIZE(buf_array_1); i++)
{
printf(" Data read: %x\n",buf_word);
}
offset = TEST_PARTITION_OFFSET+(1<<2);
printf(" Attempted to read 0x%x\n", offset);
if (flash_read(flash_dev, offset, &buf_word,
sizeof(uint32_t)) != 0) {
printf(" Flash read failed!\n");
return 0;
}
{
printf(" Data read: %x\n",buf_word);
}
buf_word = 0;
// if (buf_array_1[i] == buf_word) {
// printf(" Data read matches data written. Good!\n");
// } else {
// printf(" Data read does not match data written!\n");
// }
}
