Hi all,
I have a quesion about reading a value's characteristic in the Android app nrf Master control panel. I read a value, and i have the good value but i have a letter in quotes at the right of the value like this (this is the last characteristic; we have 0x64 (which is equal to 100 in decimal, it is the good value, but we have the letter "d" and i don't understand why ?):
My characteristic is defined like this:
static uint32_t battery_char_add(ble_lbs_t * p_lbs, const ble_lbs_init_t * p_lbs_init)
{
ble_gatts_char_md_t char_md;
ble_gatts_attr_t attr_char_value;
ble_uuid_t ble_uuid;
ble_gatts_attr_md_t attr_md;
memset(&char_md, 0, sizeof(char_md));
char_md.char_props.read = 1;
char_md.char_props.write = 0;
char_md.p_char_user_desc = NULL;
char_md.p_char_pf = NULL;
char_md.p_user_desc_md = NULL;
char_md.p_cccd_md = NULL;
char_md.p_sccd_md = NULL;
ble_uuid.type = p_lbs->uuid_type;
ble_uuid.uuid = LBS_UUID_BATTERY_CHAR;
memset(&attr_md, 0, sizeof(attr_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
attr_md.vloc = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen = 0;
memset(&attr_char_value, 0, sizeof(attr_char_value));
attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = sizeof(uint8_t);
attr_char_value.init_offs = 0;
attr_char_value.max_len = sizeof(uint8_t);
attr_char_value.p_value = (uint8_t*) &initialValueBattery;
return sd_ble_gatts_characteristic_add(p_lbs->service_handle,
&char_md,
&attr_char_value,
&p_lbs->battery_char_handles);
}
Any help would be appeciated, Thanks.
