I have a project which will send the temperature from the nRF51DK to host.
The value of the temperature is an integer. As example Value:0x00000A2B -> 2603 ->26.03°C
But on the Host side I will recieve only Value:2B
The same if I change the length of the Bytes to 4
nRF51DK Value is 0x00002710, but on the host side I will recieve Value:10-00-00-00
Here the set up for the characteristic(with 4Bytes):
attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = 4;
attr_char_value.init_offs = 0;
attr_char_value.max_len = 4;
attr_char_value.p_value = NULL;
uint32_t ble_fridge_send_temp(ble_fridge_t * p_fridge, uint8_t temp_value)
{
uint32_t err_code = NRF_SUCCESS;
ble_gatts_value_t gatts_value;
if(temp_value != p_fridge->temp_value_last)
{
memset(&gatts_value,0,sizeof(gatts_value));
gatts_value.len = 4;
gatts_value.offset = 0;
gatts_value.p_value = &temp_value;
p_fridge->temp_value_last = temp_value;
err_code = sd_ble_gatts_value_set(p_fridge->conn_handle,p_fridge->temp_char_handles.value_handle,&gatts_value);
if(err_code != NRF_SUCCESS)
{
return err_code;
}
}
Why is there an offset?
Or isnt a offset? Maybe the Byte order is false?
