OVMS3/OVMS.V3/components/esp32bluetooth/src/esp32bluetooth_app_device.cpp

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/*
; Project: Open Vehicle Monitor System
; Date: 14th March 2017
;
; Changes:
; 1.0 Initial release
;
; (C) 2011 Michael Stegen / Stegen Electronics
; (C) 2011-2017 Mark Webb-Johnson
; (C) 2011 Sonny Chen @ EPRO/DX
;
; Permission is hereby granted, free of charge, to any person obtaining a copy
; of this software and associated documentation files (the "Software"), to deal
; in the Software without restriction, including without limitation the rights
; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
; copies of the Software, and to permit persons to whom the Software is
; furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
; THE SOFTWARE.
*/
#include <string.h>
#include "esp_system.h"
#include "esp32bluetooth_app_device.h"
#include "ovms_log.h"
static const char *TAG = "bt-app-device";
// Demo property (just for testing)
static uint8_t char1_str[] = {'O','V','M','S'};
static esp_gatt_char_prop_t a_property = 0;
#define GATTS_DEMO_CHAR_VAL_LEN_MAX 0x40
static esp_attr_value_t gatts_demo_char1_val =
{
.attr_max_len = GATTS_DEMO_CHAR_VAL_LEN_MAX,
.attr_len = sizeof(char1_str),
.attr_value = char1_str,
};
// End of demo property
OvmsBluetoothAppDevice MyBluetoothAppDevice __attribute__ ((init_priority (8015)));
OvmsBluetoothAppDevice::OvmsBluetoothAppDevice()
: esp32bluetoothApp("device")
{
ESP_LOGI(TAG, "Initialising Bluetooth DEVICE App (8015)");
m_char_handle = 0;
memset(&m_char_uuid, 0, sizeof(m_char_uuid));
m_perm = 0;
m_property = 0;
m_descr_handle = 0;
memset(&m_descr_uuid, 0, sizeof(m_descr_uuid));
m_app_id = GATTS_APP_UUID_OVMS_DEVICE;
//MyBluetoothGATTS.RegisterApp(this);
}
OvmsBluetoothAppDevice::~OvmsBluetoothAppDevice()
{
}
void OvmsBluetoothAppDevice::EventRegistered(esp_ble_gatts_cb_param_t::gatts_reg_evt_param *reg)
{
m_service_id.is_primary = true;
m_service_id.id.inst_id = 0x00;
m_service_id.id.uuid.len = ESP_UUID_LEN_16;
m_service_id.id.uuid.uuid.uuid16 = GATTS_SERVICE_UUID_OVMS_DEVICE;
ESP_LOGI(TAG,"ESP_GATTS_REG_EVT Creating service %04x on interface %d",
m_service_id.id.uuid.uuid.uuid16,
m_gatts_if);
esp_ble_gatts_create_service(m_gatts_if, &m_service_id, GATTS_NUM_HANDLE_OVMS_DEVICE);
}
void OvmsBluetoothAppDevice::EventRead(esp_ble_gatts_cb_param_t::gatts_read_evt_param *read)
{
esp_gatt_rsp_t rsp;
memset(&rsp, 0, sizeof(esp_gatt_rsp_t));
rsp.attr_value.handle = read->handle;
rsp.attr_value.len = 4;
rsp.attr_value.value[0] = 0xde;
rsp.attr_value.value[1] = 0xed;
rsp.attr_value.value[2] = 0xbe;
rsp.attr_value.value[3] = 0xef;
esp_ble_gatts_send_response(m_gatts_if,
read->conn_id,
read->trans_id,
ESP_GATT_OK, &rsp);
}
void OvmsBluetoothAppDevice::EventCreate(esp_ble_gatts_cb_param_t::gatts_add_attr_tab_evt_param *attrtab)
{
m_char_uuid.len = ESP_UUID_LEN_16;
m_char_uuid.uuid.uuid16 = GATTS_CHAR_UUID_OVMS_DEVICE;
a_property = ESP_GATT_CHAR_PROP_BIT_READ | ESP_GATT_CHAR_PROP_BIT_NOTIFY;
esp_err_t add_char_ret =
esp_ble_gatts_add_char(m_service_handle,
&m_char_uuid,
ESP_GATT_PERM_READ_ENC_MITM,
a_property,
&gatts_demo_char1_val,
NULL);
if (add_char_ret)
{
ESP_LOGE(TAG, "add char failed, error code =%x",add_char_ret);
}
esp_ble_gatts_start_service(m_service_handle);
}
void OvmsBluetoothAppDevice::EventAddChar(esp_ble_gatts_cb_param_t::gatts_add_char_evt_param *addchar)
{
uint16_t length = 0;
const uint8_t *prf_char;
m_char_handle = addchar->attr_handle;
m_descr_uuid.len = ESP_UUID_LEN_16;
m_descr_uuid.uuid.uuid16 = ESP_GATT_UUID_CHAR_CLIENT_CONFIG;
esp_err_t get_attr_ret = esp_ble_gatts_get_attr_value(addchar->attr_handle, &length, &prf_char);
if (get_attr_ret == ESP_FAIL)
{
ESP_LOGE(TAG, "ILLEGAL HANDLE");
}
esp_err_t add_descr_ret = esp_ble_gatts_add_char_descr(
m_service_handle,
&m_descr_uuid,
ESP_GATT_PERM_READ,
NULL,NULL);
if (add_descr_ret)
{
ESP_LOGE(TAG, "add char descr failed, error code = %x", add_descr_ret);
}
}