251 lines
9.6 KiB
C
251 lines
9.6 KiB
C
#include <stdio.h>
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#include <string.h>
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#include "capability_service.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/event_groups.h"
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#include "freertos/task.h"
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#include "host/ble_hs.h"
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#include "host/ble_sm.h"
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#include "host/ble_uuid.h"
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#include "include/device_service.h"
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#include "include/led_service.h"
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#include "led_matrix.h"
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#include "nimble/nimble_port.h"
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#include "nimble/nimble_port_freertos.h"
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#include "sdkconfig.h"
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#include "services/gap/ble_svc_gap.h"
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#include "services/gatt/ble_svc_gatt.h"
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static const char *TAG = "remote_control";
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static const ble_uuid16_t device_service_uuid = BLE_UUID16_INIT(0x180A);
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static const ble_uuid128_t capability_service_uuid =
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BLE_UUID128_INIT(0x91, 0xB6, 0xCA, 0x95, 0xB2, 0xC6, 0x7B, 0x90, 0x31, 0x45, 0x77, 0xE6, 0x67, 0x10, 0x68, 0xB9);
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static const ble_uuid16_t led_service_uuid = BLE_UUID16_INIT(0x1007);
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uint8_t ble_addr_type;
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// Handle for the capability characteristic value
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static uint16_t g_capa_char_val_handle;
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static void ble_app_advertise(void);
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static struct ble_gatt_dsc_def char_0xA000_descs[] = {{
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.uuid = BLE_UUID16_DECLARE(0x2901),
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.att_flags = BLE_ATT_F_READ,
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.access_cb = ls_char_a000_user_desc,
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},
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{0}};
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static struct ble_gatt_dsc_def char_0xDEAD_descs[] = {{
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.uuid = BLE_UUID16_DECLARE(0x2901),
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.att_flags = BLE_ATT_F_WRITE,
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.access_cb = ls_char_dead_user_desc,
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},
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{0}};
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static struct ble_gatt_dsc_def char_0x1979_desc[] = {{
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.uuid = BLE_UUID16_DECLARE(0x2901),
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.att_flags = BLE_ATT_F_READ,
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.access_cb = capa_char_1979_user_desc,
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},
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{0}};
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// Array of pointers to other service definitions
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static const struct ble_gatt_svc_def gatt_svcs[] = {
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{
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = &device_service_uuid.u,
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.characteristics =
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(struct ble_gatt_chr_def[]){
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{.uuid = BLE_UUID16_DECLARE(0x2A24), .flags = BLE_GATT_CHR_F_READ, .access_cb = ds_model_number_read},
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{.uuid = BLE_UUID16_DECLARE(0x2A29), .flags = BLE_GATT_CHR_F_READ, .access_cb = ds_manufacturer_read},
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{0}},
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},
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{
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = &capability_service_uuid.u,
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.characteristics = (struct ble_gatt_chr_def[]){{
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.uuid = BLE_UUID16_DECLARE(0x1979),
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.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
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.access_cb = capa_read,
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.val_handle = &g_capa_char_val_handle,
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.descriptors = char_0x1979_desc,
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},
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{0}},
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},
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{
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = &led_service_uuid.u,
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.characteristics = (struct ble_gatt_chr_def[]){{
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.uuid = BLE_UUID16_DECLARE(0xA000),
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.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
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.access_cb = ls_capabilities_read,
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.descriptors = char_0xA000_descs,
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},
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{
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.uuid = BLE_UUID16_DECLARE(0xDEAD),
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.flags = BLE_GATT_CHR_F_WRITE,
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.access_cb = ls_write,
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.descriptors = char_0xDEAD_descs,
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},
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{0}},
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},
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{0}};
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// BLE event handling
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static int ble_gap_event(struct ble_gap_event *event, void *arg)
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{
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switch (event->type)
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{
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case BLE_GAP_EVENT_CONNECT:
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ESP_LOGI(TAG, "BLE GAP EVENT CONNECT %s", event->connect.status == 0 ? "OK!" : "FAILED!");
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if (event->connect.status != 0)
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{
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// Re-advertise if connection failed
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ble_app_advertise();
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}
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break;
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case BLE_GAP_EVENT_DISCONNECT:
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ESP_LOGI(TAG, "BLE GAP EVENT DISCONNECTED");
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// Re-advertise after disconnection
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ble_app_advertise();
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break;
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case BLE_GAP_EVENT_ADV_COMPLETE:
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ESP_LOGI(TAG, "BLE GAP EVENT ADV COMPLETE");
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// Re-advertise to continue accepting new clients
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ble_app_advertise();
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break;
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case BLE_GAP_EVENT_SUBSCRIBE:
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ESP_LOGI(TAG,
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"BLE GAP EVENT SUBSCRIBE conn_handle=%d attr_handle=%d reason=%d "
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"prev_notify=%d cur_notify=%d prev_indicate=%d cur_indicate=%d",
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event->subscribe.conn_handle, event->subscribe.attr_handle, event->subscribe.reason,
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event->subscribe.prev_notify, event->subscribe.cur_notify, event->subscribe.prev_indicate,
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event->subscribe.cur_indicate);
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// Check if subscription is for the capability characteristic's CCCD.
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// The CCCD handle is typically the characteristic value handle + 1.
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// g_capa_char_val_handle stores the handle of the characteristic value itself.
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if (event->subscribe.attr_handle == g_capa_char_val_handle + 1)
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{
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if (event->subscribe.cur_notify)
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{
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ESP_LOGI(TAG, "Client subscribed to capability notifications. Sending data...");
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// Call the function to send capability data via notifications
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capa_notify_data(event->subscribe.conn_handle, g_capa_char_val_handle);
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}
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else
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{
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ESP_LOGI(TAG, "Client unsubscribed from capability notifications.");
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}
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}
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break;
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default:
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break;
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}
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return 0;
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}
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// Define the BLE connection
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static void ble_app_advertise(void)
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{
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int ret;
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// GAP - advertising definition
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struct ble_hs_adv_fields fields;
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memset(&fields, 0, sizeof(fields));
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fields.flags = BLE_HS_ADV_F_DISC_GEN | BLE_HS_ADV_F_BREDR_UNSUP;
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fields.uuids128 = (ble_uuid128_t[]){capability_service_uuid};
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fields.num_uuids128 = 1;
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fields.uuids128_is_complete = 1;
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ret = ble_gap_adv_set_fields(&fields);
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if (ret != 0)
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{
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ESP_LOGE(TAG, "Failed to set advertising data (err: %d)", ret);
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return;
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}
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// GAP - device connectivity definition
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struct ble_gap_adv_params adv_params;
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memset(&adv_params, 0, sizeof(adv_params));
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adv_params.conn_mode = BLE_GAP_CONN_MODE_UND; // connectable or non-connectable
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adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN; // discoverable or non-discoverable
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ret = ble_gap_adv_start(ble_addr_type, NULL, BLE_HS_FOREVER, &adv_params, ble_gap_event, NULL);
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if (ret != 0)
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{
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ESP_LOGE(TAG, "Advertising failed to start (err %d)", ret);
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return;
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}
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// --- Configure Scan Response Data (SCAN_RSP) ---
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struct ble_hs_adv_fields scan_rsp_fields;
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memset(&scan_rsp_fields, 0, sizeof(scan_rsp_fields));
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// Get the device name
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const char *device_name;
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device_name = ble_svc_gap_device_name();
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scan_rsp_fields.name = (uint8_t *)device_name;
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scan_rsp_fields.name_len = strlen(device_name);
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scan_rsp_fields.name_is_complete = 1;
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// Optionally, add TX power level to scan response
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scan_rsp_fields.tx_pwr_lvl = BLE_HS_ADV_TX_PWR_LVL_AUTO;
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scan_rsp_fields.tx_pwr_lvl_is_present = 1;
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ret = ble_gap_adv_rsp_set_fields(&scan_rsp_fields);
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if (ret != 0)
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{
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ESP_LOGE(TAG, "Error setting scan response data; rc=%d", ret);
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return;
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}
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}
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// The application
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static void ble_app_on_sync(void)
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{
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uint8_t ble_addr[6] = {0};
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int ret = ble_hs_id_copy_addr(BLE_ADDR_PUBLIC, ble_addr, NULL);
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if (ret != 0)
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{
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ESP_LOGE(TAG, "Failed to get BLE MAC address (err: %d)", ret);
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return;
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}
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char formatted_name[32];
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snprintf(formatted_name, sizeof(formatted_name), "Miniature Town %02X%02X", ble_addr[4], ble_addr[5]);
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ble_svc_gap_device_name_set(formatted_name);
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// Start Advertising
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ble_hs_id_infer_auto(0, &ble_addr_type); // Determines the best address type automatically
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ble_app_advertise();
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}
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// The infinite task
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static void host_task(void *param)
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{
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nimble_port_run(); // This function will return only when nimble_port_stop() is executed
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}
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void ble_init(void)
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{
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nimble_port_init();
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ble_svc_gap_init();
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ble_svc_gatt_init();
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ble_gatts_count_cfg(gatt_svcs);
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ble_gatts_add_svcs(gatt_svcs);
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// Callback für Synchronisation
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ble_hs_cfg.sync_cb = ble_app_on_sync;
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nimble_port_freertos_init(host_task); // Start BLE-Host-Task
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}
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