ble_rms.c
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#include "sdk_common.h"
#include "ble_rms.h"
#include <string.h>
#include "ble_srv_common.h"
#include "boards.h"
#include "nrf_log.h"
#include "nrf_delay.h"
#include "rgb.h"
static void on_connect(ble_rms_t * p_rms, ble_evt_t const * p_ble_evt)
{
p_rms->conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
ble_rms_evt_t evt;
evt.evt_type = BLE_RMS_EVT_CONNECTED;
p_rms->evt_handler(p_rms, &evt);
}
static void on_disconnect(ble_rms_t * p_rms, ble_evt_t const * p_ble_evt)
{
UNUSED_PARAMETER(p_ble_evt);
p_rms->conn_handle = BLE_CONN_HANDLE_INVALID;
}
//write on nrf board
static void on_write(ble_rms_t * p_rms, ble_evt_t const * p_ble_evt)
{
ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
uint8_t rgb_data = *p_evt_write->data;
RGB_Data_t *RGB_Data;
// Custom Value Characteristic Written to.
if (p_evt_write->handle == p_rms->r_value_handles.value_handle)
{
nrf_gpio_pin_write(R_PIN, rgb_data);
RGB_Data->r_value= rgb_data;
}
else if (p_evt_write->handle == p_rms->g_value_handles.value_handle)
{
nrf_gpio_pin_write(G_PIN, rgb_data);
RGB_Data->g_value= rgb_data;
}
else if (p_evt_write->handle == p_rms->b_value_handles.value_handle)
{
nrf_gpio_pin_write(B_PIN, rgb_data);
RGB_Data->b_value= rgb_data;
}else {
}
// Check if the Custom value CCCD is written to and that the value is the appropriate length, i.e 2 bytes.
if (((p_evt_write->handle == p_rms->r_value_handles.cccd_handle) || (p_evt_write->handle == p_rms-> g_value_handles.cccd_handle) || (p_evt_write-> handle == p_rms-> b_value_handles.cccd_handle))
&& (p_evt_write->len == 1)
)
{
// CCCD written, call application event handler
if (p_rms->evt_handler != NULL)
{
ble_rms_evt_t evt;
if (ble_srv_is_notification_enabled(p_evt_write->data))
{
evt.evt_type = BLE_RMS_EVT_NOTIFICATION_ENABLED;
}
else
{
evt.evt_type = BLE_RMS_EVT_NOTIFICATION_DISABLED;
}
// Call the application event handler.
p_rms->evt_handler(p_rms, &evt);
}
} else{
}
}
void ble_rms_on_ble_evt( ble_evt_t const * p_ble_evt, void * p_context)
{
ble_rms_t * p_rms = (ble_rms_t *) p_context;
NRF_LOG_INFO("BLE event received. Event type = %d\r\n", p_ble_evt->header.evt_id);
if (p_rms == NULL || p_ble_evt == NULL)
{
return;
}
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
on_connect(p_rms, p_ble_evt);
break;
case BLE_GAP_EVT_DISCONNECTED:
on_disconnect(p_rms, p_ble_evt);
break;
case BLE_GATTS_EVT_WRITE:
on_write(p_rms, p_ble_evt);
break;
default:
// No implementation needed.
break;
}
}
static uint32_t custom_value_char_add(ble_rms_t * p_rms, const ble_rms_init_t * p_rms_init)
{
uint32_t err_code;
ble_gatts_char_md_t char_md;
ble_gatts_attr_md_t cccd_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 = 1;
char_md.char_props.notify = 1;
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 = &cccd_md;
char_md.p_sccd_md = NULL;
memset(&cccd_md, 0, sizeof(cccd_md));
// Read operation on Cccd should be possible without authentication.
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
cccd_md.vloc = BLE_GATTS_VLOC_STACK;
memset(&attr_md, 0, sizeof(attr_md));
attr_md.read_perm = p_rms_init->custom_value_char_attr_md.read_perm;
attr_md.write_perm = p_rms_init->custom_value_char_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;
ble_uuid.type = p_rms->uuid_type;
ble_uuid.uuid = RM_R_VALUE_CHAR_UUID;
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);
err_code = sd_ble_gatts_characteristic_add(p_rms->service_handle, &char_md,
&attr_char_value,
&p_rms->r_value_handles);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
ble_uuid.type = p_rms->uuid_type;
ble_uuid.uuid = RM_G_VALUE_CHAR_UUID;
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);
err_code = sd_ble_gatts_characteristic_add(p_rms->service_handle, &char_md,
&attr_char_value,
&p_rms->g_value_handles);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
ble_uuid.type = p_rms->uuid_type;
ble_uuid.uuid = RM_B_VALUE_CHAR_UUID;
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);
err_code = sd_ble_gatts_characteristic_add(p_rms->service_handle, &char_md,
&attr_char_value,
&p_rms->b_value_handles);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
return NRF_SUCCESS;
}
uint32_t ble_rms_init(ble_rms_t * p_rms, const ble_rms_init_t * p_rms_init)
{
if (p_rms == NULL || p_rms_init == NULL)
{
return NRF_ERROR_NULL;
}
uint32_t err_code;
ble_uuid_t ble_uuid;
// Initialize service structure
p_rms->evt_handler = p_rms_init->evt_handler;
p_rms->conn_handle = BLE_CONN_HANDLE_INVALID;
// Add Custom Service UUID
ble_uuid128_t base_uuid = {RM_CUSTOM_SERVICE_UUID_BASE};
err_code = sd_ble_uuid_vs_add(&base_uuid, &p_rms->uuid_type);
VERIFY_SUCCESS(err_code);
ble_uuid.type = p_rms->uuid_type;
ble_uuid.uuid = RM_CUSTOM_SERVICE_UUID;
// Add the Custom Service
err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &p_rms->service_handle);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
PIN_R_OUT;
PIN_G_OUT;
PIN_B_OUT;
nrf_delay_us(19);
PIN_R_CLEAR;
PIN_G_CLEAR;
PIN_B_CLEAR;
// Add Custom Value characteristic
return custom_value_char_add(p_rms, p_rms_init);
}
uint32_t ble_rms_r_value_update(ble_rms_t * p_rms, uint8_t custom_value)
{
NRF_LOG_INFO("In ble_cus_r_value_update. \r\n");
if (p_rms == NULL)
{
return NRF_ERROR_NULL;
}
uint32_t err_code = NRF_SUCCESS;
ble_gatts_value_t gatts_value;
// Initialize value struct.
memset(&gatts_value, 0, sizeof(gatts_value));
gatts_value.len = sizeof(uint8_t);
gatts_value.offset = 0;
gatts_value.p_value = &custom_value;
// Update database.
err_code = sd_ble_gatts_value_set(p_rms->conn_handle,
p_rms->r_value_handles.value_handle,
&gatts_value);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
// Send value if connected and notifying.
if ((p_rms->conn_handle != BLE_CONN_HANDLE_INVALID))
{
ble_gatts_hvx_params_t hvx_params;
memset(&hvx_params, 0, sizeof(hvx_params));
hvx_params.handle = p_rms->r_value_handles.value_handle;
hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
hvx_params.offset = gatts_value.offset;
hvx_params.p_len = &gatts_value.len;
hvx_params.p_data = gatts_value.p_value;
err_code = sd_ble_gatts_hvx(p_rms->conn_handle, &hvx_params);
NRF_LOG_INFO("sd_ble_gatts_hvx result: %x. \r\n", err_code);
}
else
{
err_code = NRF_ERROR_INVALID_STATE;
NRF_LOG_INFO("sd_ble_gatts_hvx result: NRF_ERROR_INVALID_STATE. \r\n");
}
return err_code;
}
uint32_t ble_rms_g_value_update(ble_rms_t * p_rms, uint8_t custom_value)
{
NRF_LOG_INFO("In ble_cus_g_value_update. \r\n");
if (p_rms == NULL)
{
return NRF_ERROR_NULL;
}
uint32_t err_code = NRF_SUCCESS;
ble_gatts_value_t gatts_value;
// Initialize value struct.
memset(&gatts_value, 0, sizeof(gatts_value));
gatts_value.len = sizeof(uint8_t);
gatts_value.offset = 0;
gatts_value.p_value = &custom_value;
// Update database.
err_code = sd_ble_gatts_value_set(p_rms->conn_handle,
p_rms->g_value_handles.value_handle,
&gatts_value);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
// Send value if connected and notifying.
if ((p_rms->conn_handle != BLE_CONN_HANDLE_INVALID))
{
ble_gatts_hvx_params_t hvx_params;
memset(&hvx_params, 0, sizeof(hvx_params));
hvx_params.handle = p_rms->g_value_handles.value_handle;
hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
hvx_params.offset = gatts_value.offset;
hvx_params.p_len = &gatts_value.len;
hvx_params.p_data = gatts_value.p_value;
err_code = sd_ble_gatts_hvx(p_rms->conn_handle, &hvx_params);
NRF_LOG_INFO("sd_ble_gatts_hvx result: %x. \r\n", err_code);
}
else
{
err_code = NRF_ERROR_INVALID_STATE;
NRF_LOG_INFO("sd_ble_gatts_hvx result: NRF_ERROR_INVALID_STATE. \r\n");
}
return err_code;
}
uint32_t ble_rms_b_value_update(ble_rms_t * p_rms, uint8_t custom_value)
{
NRF_LOG_INFO("In ble_cus_b_value_update. \r\n");
if (p_rms == NULL)
{
return NRF_ERROR_NULL;
}
uint32_t err_code = NRF_SUCCESS;
ble_gatts_value_t gatts_value;
// Initialize value struct.
memset(&gatts_value, 0, sizeof(gatts_value));
gatts_value.len = sizeof(uint8_t);
gatts_value.offset = 0;
gatts_value.p_value = &custom_value;
// Update database.
err_code = sd_ble_gatts_value_set(p_rms->conn_handle,
p_rms->b_value_handles.value_handle,
&gatts_value);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
// Send value if connected and notifying.
if ((p_rms->conn_handle != BLE_CONN_HANDLE_INVALID))
{
ble_gatts_hvx_params_t hvx_params;
memset(&hvx_params, 0, sizeof(hvx_params));
hvx_params.handle = p_rms->b_value_handles.value_handle;
hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
hvx_params.offset = gatts_value.offset;
hvx_params.p_len = &gatts_value.len;
hvx_params.p_data = gatts_value.p_value;
err_code = sd_ble_gatts_hvx(p_rms->conn_handle, &hvx_params);
NRF_LOG_INFO("sd_ble_gatts_hvx result: %x. \r\n", err_code);
}
else
{
err_code = NRF_ERROR_INVALID_STATE;
NRF_LOG_INFO("sd_ble_gatts_hvx result: NRF_ERROR_INVALID_STATE. \r\n");
}
return err_code;
}