We have based our code off of ble_app_proximity. Upon first connecting to the advertising NRF51822AB device with softdevice 110 v8.0.0, we write to pstorage.
static void on_ble_evt(ble_evt_t * p_ble_evt)
{
uint32_t err_code = NRF_SUCCESS;
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
{
value[0] = 1;
err_code = pstorage_update(&flash_block_handler, value, 4, 0);
Unfortunately, after disconnecting, the device attempts to begin advertising again and fails to go very far into the advertising_start() code.
static void advertising_start(void)
{
uint32_t err_code;
ble_gap_adv_params_t adv_params;
ble_gap_whitelist_t whitelist;
uint32_t count;
// Verify if there is any flash access pending, if yes delay starting advertising until it's complete.
err_code = pstorage_access_status_get(&count);
APP_ERROR_CHECK(err_code);
if (count != 0)
{
m_memory_access_in_progress = true;
return;
}
Count starts at 0, but upon connecting and then disconnecting to trigger re-advertising, the count now is set to 1 and bluetooth advertisement packets fail to appear.
When we used sdk 8 the pstorage count was always 0. Now that we are using SDK 10, pstorage_access_status_get sets count to 1, and advertising does not restart.
In our system event handler, we watch for the flash to finish, but the flash never triggers an event:
static void on_sys_evt(uint32_t sys_evt)
{
switch(sys_evt)
{
case NRF_EVT_FLASH_OPERATION_SUCCESS:
case NRF_EVT_FLASH_OPERATION_ERROR:
if (m_memory_access_in_progress)
{
m_memory_access_in_progress = false;
advertising_start();
}
break;
While debugging, I found that the pstorage_update function does a 'page swap erase' first, and upon entering this function
pstorage.c
flash_api_err_code_process(sd_flash_page_erase(page_number));
sd_flash_page_erase appears to have a return value of 0x0000000F. The code was compiled in optimization level 1, so I'm not sure if the return value of F is an artifact of the optimization.
Thank you in advance for reading this and for your assistance.
