Hi, I'm developing an application using internal flash memory.
I based on flash_fds example to implement this feature.
Now I can write and read data from flash.
My basic feature is when device reset It will read data from memory and it will blink led it data I want to read consist in flash memory. In this case I saved "hello !"
Here is my code
#define FILE_ID 0x0001 /* The ID of the file to write the records into. */
#define RECORD_KEY 0x1111 /* A key for the first record. */
// record using for write
fds_record_t record;
fds_record_desc_t record_desc;
fds_flash_record_t flash_record;
fds_find_token_t ftok;
bool flash_flag = false;
int flash_count = 0;
bool m_fds_initialized = false;
static char const m_hello[] = "hello !";
static void wait_for_fds_ready(void) {
while (!m_fds_initialized) {
power_manage();
}
}
static void fds_evt_handler(fds_evt_t const *p_fds_evt) {
switch (p_fds_evt->id) {
case FDS_EVT_INIT:
if (p_fds_evt->result == NRF_SUCCESS) {
m_fds_initialized = true;
}
break;
case FDS_EVT_WRITE:
// NRF_LOG_INFO("write")
flash_flag = true;
memset(&ftok, 0x00, sizeof(fds_find_token_t));
break;
// case FDS_EVT_READ:
default:
break;
}
}
uint8_t dataFromFlash[100];
int main(void) {
bool erase_bonds;
log_init();
fds_register(fds_evt_handler);
fds_init();
wait_for_fds_ready();
fds_record_open(&record_desc, &flash_record);
sprintf(dataFromFlash, "%s", flash_record.p_data);
if (strstr(dataFromFlash, m_hello) != NULL) {
blinkLED(orange);
} else {
blinkLED(yellow);
}
fds_record_close(&record_desc);
record.file_id = FILE_ID;
record.key = RECORD_KEY;
record.data.p_data = &m_hello;
record.data.length_words = (sizeof(m_hello) + 3) / 4;
fds_record_write(&record_desc, &record);
while (flash_flag) {
// while (fds_record_find(FILE_ID, RECORD_KEY, &record_desc, &ftok) == NRF_SUCCESS) {
fds_record_open(&record_desc, &flash_record);
sprintf(dataFromFlash, "%s", flash_record.p_data);
NRF_LOG_INFO("%s", dataFromFlash);
fds_record_close(&record_desc);
break;
}
for (;;) {
}
}I attched my sdk_config.h
