S120 Central to RFDuino (S110??)

[eq]

I am building a Central BLE app using the Rigado BMD-200 but my current peripherals are running RFDuino code. The peripherals all work with the IOS and Android Apps but I cannot get the RFDUINOs to respond to the BLE Central. I CAN connect to the RFDuinos successfully but CANNOT Send them data.

main.c can be viewed here: main.c

I am using the code below on the Central. I started with the HRS code and modified it for my purpose; primarily switching out the UUIDs to the RFDuino ones 0x2220. I believe that my connection handle and characteristic handles are valid. They are 0 and 15 respectively. I am trying to call our to the Peripheral from the hrs_c_evt_handler function by creating a simple function called SendCommndtoDevice(p_hrs_c); Code below:

/
**@brief Heart Rate Collector Handler.
 */
static void hrs_c_evt_handler(ble_hrs_c_t * p_hrs_c, ble_hrs_c_evt_t * p_hrs_c_evt)
{
    uint32_t err_code;

    switch (p_hrs_c_evt->evt_type)
    {
        case BLE_HRS_C_EVT_DISCOVERY_COMPLETE:
            // Initiate bonding.
            err_code = dm_security_setup_req(&m_dm_device_handle);
            APP_ERROR_CHECK(err_code);

            // Heart rate service discovered. Send Soft Button Command

            err_code = SendCommndtoDevice(p_hrs_c);

            //err_code = ble_hrs_c_hrm_notif_enable(p_hrs_c);
            APP_ERROR_CHECK(err_code);

            printf("QIQI-Heart rate service discovered \r\n");
            break;

        case BLE_HRS_C_EVT_HRM_NOTIFICATION:
        {
            APPL_LOG("[APPL]: HR Measurement received %d \r\n", p_hrs_c_evt->params.hrm.hr_value);

            printf("Heart Rate = %d\r\n", p_hrs_c_evt->params.hrm.hr_value);
            break;
        }

        default:
            break;
    }
}

static uint32_t SendCommndtoDevice(ble_hrs_c_t * p_ble_hrs_c)
{
	uint32_t err_code;

	ble_gattc_write_params_t write_params;

	//printf("CCCD Handle = %d, Conn Handle = %d\r\n", handle_cccd, conn_handle);

	printf("Transmit\n");

	memset(&write_params, 0, sizeof(write_params));

	write_params.write_op = BLE_GATT_OP_WRITE_CMD;
	write_params.handle   = p_ble_hrs_c->hrm_cccd_handle;
	write_params.len	  = 0x05;
	write_params.offset   = 0;
	write_params.p_value  = soft_button_cmd;

	err_code =  sd_ble_gattc_write(p_ble_hrs_c->conn_handle, &write_params);
    APP_ERROR_CHECK(err_code);

	//printf("Error: %lu\n", err_code);
    return err_code;
}

The RFDuino never receives the message and err_code = 0 every time. Is the RFDuino compatible with S120, S130?

Any insight would be appreciated.

[Ulrich Myhre]

This looks correct to me then. It initially looked like you added some services yourself, then used the assigned value handles from those to write to the peer. But with this discovery function it should be okay. I would try to set a breakpoint or print a log message for every write to see which handle you are trying to write to. If it is 0, then the relevant portion of the db_discover_evt_handler() might not be hit for some reason (wrong UUID perhaps?).

[eq]

Thanks Ulrich! Ultimately there was another UUID that I should have been using and I was using the wrong handle to connect to the Characteristic. I thought I should be using the CCCD handle but I should have been using the Characteristic handle. Its all working now. Thanks for your help!!