uart_ctr_medical_beauty_photography/main/ble_spp_client_demo.h

#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>

#define PROFILE_NUM 1
#define PROFILE_APP_ID 0
#define BT_BD_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x"
#define BT_BD_ADDR_HEX(addr) addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]
#define ESP_GATT_SPP_SERVICE_UUID                                                                      \
    {                                                                                                  \
        0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x01, 0x00, 0x40, 0x6E \
    }
#define SCAN_ALL_THE_TIME 0

enum
{
    SPP_IDX_SVC,

    SPP_IDX_SPP_DATA_NTY_VAL,
    SPP_IDX_SPP_DATA_NTF_CFG,

    SPP_IDX_SPP_DATA_RECV_VAL,

// SPP_IDX_SPP_COMMAND_VAL,

#ifdef SUPPORT_HEARTBEAT
    SPP_IDX_SPP_HEARTBEAT_VAL,
    SPP_IDX_SPP_HEARTBEAT_CFG,
#endif

    SPP_IDX_NB,
};

void ble_init();
void ble_gattc_write_char(char *string, uint8_t string_length);