Hi,
I'm testing the below example code, found on devzone, on mesh sdk 2.2.0.
int main(void)
{
uint32_t ret_code;
__LOG_INIT(LOG_SRC_APP | LOG_SRC_ACCESS, LOG_LEVEL_INFO, LOG_CALLBACK_DEFAULT);
__LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "----- BLE Mesh Light Switch Client Demo -----\n");
hal_leds_init();
ERROR_CHECK(hal_buttons_init(button_event_handler));
/* Set the first LED */
hal_led_pin_set(BSP_LED_0, true);
mesh_core_setup();
access_setup();
rtt_input_enable(rtt_input_handler, RTT_INPUT_POLL_PERIOD_MS);
/* Adding custom data to flash for persistent storage */
// 1) Flash manager is already initialized
// 2) Add a new flash manager instance. NB: should not overlap (in region) the instance used by mesh.
flash_manager_config_t custom_data_manager_config;
custom_data_manager_config.write_complete_cb = NULL;
custom_data_manager_config.invalidate_complete_cb = NULL;
custom_data_manager_config.remove_complete_cb = NULL;
custom_data_manager_config.min_available_space = WORD_SIZE;
// The new instance of flash manager should use an unused region of flash:
custom_data_manager_config.p_area = (const flash_manager_page_t *) (((const uint8_t *) dsm_flash_area_get()) - (ACCESS_FLASH_PAGE_COUNT * PAGE_SIZE) - (NET_FLASH_PAGE_COUNT * PAGE_SIZE) );
custom_data_manager_config.page_count = CUSTOM_DATA_FLASH_PAGE_COUNT;
ret_code = flash_manager_add(&m_custom_data_flash_manager, &custom_data_manager_config);
if (NRF_SUCCESS != ret_code) {
__LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Flash error: no memory\n",ret_code);
}
// 3) Write to Flash
// a) allocate flash
fm_entry_t * p_entry = flash_manager_entry_alloc(&m_custom_data_flash_manager, FLASH_CUSTOM_DATA_GROUP_ELEMENT, sizeof(custom_data_format_t));
if (p_entry == NULL)
{
return NRF_ERROR_BUSY;
}
else
{
custom_data_format_t * p_custom_data = (custom_data_format_t *) p_entry->data;
p_custom_data->data[0] = 5;
p_custom_data->data[1] = 9;
// b) write to flash
flash_manager_entry_commit(p_entry);
__LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "write:%x, %x\n",p_entry->data[0], p_entry->data[1]);
}
// 4) Wait for flash manager to finish.
flash_manager_wait();
// 5) Read from Flash
const fm_entry_t * p_read_raw = flash_manager_entry_get(&m_custom_data_flash_manager, FLASH_CUSTOM_DATA_GROUP_ELEMENT);
const custom_data_format_t * p_read_data = (const custom_data_format_t *) p_read_raw->data;
__LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "read:%x, %x\n",p_read_data->data[0], p_read_data->data[1]);
while (true)
{
(void)sd_app_evt_wait();
}
}I'm experiencing a strange issue on the read side.
On the first read after the write I always read the old value, not the just written data.
Then on the first execution of the above code, it writes 0x5, 0x09 and it reads some garbage because the flash was never written before.
On the second execution I write and read the same.
If I change the written data, on the first read I continue reading 0x05, 0x09 and from the second read on I read the new data.
It seams that flash_manager_wait() is not working properly.
Have you an idea of the reason of this behavior?
Thank you
Lucio
