Raspberry Pi Pico W的BTstack HID键盘约30秒后断开问题求助

基于Raspberry Pi Pico W制作BTstack HID蓝牙键盘，所有功能均可正常使用，但设备连接后约30秒会自动断开，重新连接后仍会出现相同的断开问题。

BT_custom_keypad.c #

#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include "hid_keyboard_demo.c" //line 363 commented

void send_hid_text(uint8_t* text) {
    btstack_ring_buffer_write(&send_buffer, text, strlen(text));
    send_next(NULL);
    busy_wait_ms(100);
}

void send_hid_char(uint8_t c) {
    btstack_ring_buffer_write(&send_buffer, (uint8_t*)&c, 1);
    send_next(NULL);
    busy_wait_ms(100);
}

void send_hid_spec_code(uint8_t m, uint8_t c) {
    send_modifier = m;
    send_keycode = c;
    hid_device_request_can_send_now_event(hid_cid);
}


int main()
{
    stdio_init_all();
    if (cyw43_arch_init()) {
        printf("cyw43 arch init error\n");
        return 0;
    }


    btstack_main(0, NULL);
    gap_set_local_name("PicoW Keypad");


    while(1) {

        busy_wait_ms(2000);
        send_hid_text("messages...\n");

        tight_loop_contents();
    }

    return 0;
}

btStack_config.h #

#ifndef _PICO_BTSTACK_BTSTACK_CONFIG_H
#define _PICO_BTSTACK_BTSTACK_CONFIG_H

// BTstack可启用的功能
#ifdef ENABLE_BLE
#define ENABLE_LE_PERIPHERAL
#define ENABLE_LE_CENTRAL
#define ENABLE_L2CAP_LE_CREDIT_BASED_FLOW_CONTROL_MODE
#endif

#ifdef ENABLE_MESH
// Mesh配置
#define ENABLE_MESH_ADV_BEARER
#define ENABLE_MESH_GATT_BEARER
#define ENABLE_MESH_PB_ADV
#define ENABLE_MESH_PB_GATT
#define ENABLE_MESH_PROXY_SERVER
#define ENABLE_MESH_RELAY

#define ENABLE_MESH_PROVISIONER

#define MAX_NR_MESH_SUBNETS            2
#define MAX_NR_MESH_TRANSPORT_KEYS    16
#define MAX_NR_MESH_VIRTUAL_ADDRESSES 16
// 预留一个NetKey更新的名额
#define MAX_NR_MESH_NETWORK_KEYS      (MAX_NR_MESH_SUBNETS+1)
#endif


#define ENABLE_LOG_INFO
#define ENABLE_LOG_ERROR
#define ENABLE_PRINTF_HEXDUMP
#define ENABLE_SCO_OVER_HCI

// BTstack配置：缓冲区、大小等
#define HCI_OUTGOING_PRE_BUFFER_SIZE 4
#define HCI_ACL_PAYLOAD_SIZE (1691 + 4)
#define HCI_ACL_CHUNK_SIZE_ALIGNMENT 4
#define MAX_NR_AVDTP_CONNECTIONS 1
#define MAX_NR_AVDTP_STREAM_ENDPOINTS 1
#define MAX_NR_AVRCP_CONNECTIONS 2
#define MAX_NR_BNEP_CHANNELS 1
#define MAX_NR_BNEP_SERVICES 1
#define MAX_NR_BTSTACK_LINK_KEY_DB_MEMORY_ENTRIES  2
#define MAX_NR_GATT_CLIENTS 1
#define MAX_NR_HCI_CONNECTIONS 2
#define MAX_NR_HID_HOST_CONNECTIONS 1
#define MAX_NR_HIDS_CLIENTS 1
#define MAX_NR_HFP_CONNECTIONS 1
#define MAX_NR_L2CAP_CHANNELS  4
#define MAX_NR_L2CAP_SERVICES  3
#define MAX_NR_RFCOMM_CHANNELS 1
#define MAX_NR_RFCOMM_MULTIPLEXERS 1
#define MAX_NR_RFCOMM_SERVICES 1
#define MAX_NR_SERVICE_RECORD_ITEMS 4
#define MAX_NR_SM_LOOKUP_ENTRIES 3
#define MAX_NR_WHITELIST_ENTRIES 16
#define MAX_NR_LE_DEVICE_DB_ENTRIES 16

// 限制栈使用的ACL/SCO缓冲区数量，避免cyw43共享总线过载
#define MAX_NR_CONTROLLER_ACL_BUFFERS 3
#define MAX_NR_CONTROLLER_SCO_PACKETS 3

// 启用并配置HCI控制器到主机的流控制，避免cyw43共享总线过载
#define ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
#define HCI_HOST_ACL_PACKET_LEN 1024
#define HCI_HOST_ACL_PACKET_NUM 3
#define HCI_HOST_SCO_PACKET_LEN 120
#define HCI_HOST_SCO_PACKET_NUM 3

// 基于Flash扇区接口的TLV实现链路密钥数据库和LE设备数据库
#define NVM_NUM_DEVICE_DB_ENTRIES 16
#define NVM_NUM_LINK_KEYS 16

// 不为btstack分配malloc，因此使用固定大小的ATT数据库
#define MAX_ATT_DB_SIZE 512

// BTstack HAL配置
#define HAVE_EMBEDDED_TIME_MS

// 将btstack_assert映射到Pico SDK的assert()
#define HAVE_ASSERT

// 部分USB适配器对HCI重置的响应时间更长（如BCM20702A）
#define HCI_RESET_RESEND_TIMEOUT_MS 1000

#define ENABLE_SOFTWARE_AES128
#define ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS

//#define HAVE_BTSTACK_STDIN

// 为了在115200波特率的HCI dump下仍能运行音频演示，截断长ACL数据包
//#define HCI_DUMP_STDOUT_MAX_SIZE_ACL 100

#ifdef ENABLE_CLASSIC
#define ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE
#endif

#define HAVE_MALLOC

#endif // _PICO_BTSTACK_BTSTACK_CONFIG_H

内容的提问来源于stack exchange，提问作者BoomFlame