Art_Pi的蓝牙基础功能https://blog.csdn.net/s2014201506/article/details/166840939?spm1001.2014.3001.5501如果希望使用ART-PI的蓝牙透传通信功能需要先按照上面的链接教程学会如何驱动AP6212实现最基本的心跳通信实验。在以上教程的功能基础上我简单为大家介绍一下如何实现手机和开发板的蓝牙双向通信。在Samples中选择BLE uart sample这一个实例它代表着串口透传功能。保存配置生成程序后此时选择编译编译器提示报错。错误1../packages/NimBLE-latest/apps/bleuart/src/bleuart.c:37:34: fatal error: nimble/ble_hci_trans.h: No such file or directory它提示这个头文件在项目中找不到这个文件缺失解决办法就是屏蔽这个include 。屏蔽后再次编译此时会暴露更多问题。此时需要找到以下位置的文件packages\NimBLE-latest\nimble\host\services\bleuart\src\bleuart.c主要修改的是这个文件的内容在内部添加以下的内容#define MYNEWT_VAL_BLEUART_MAX_INPUT 120和增加一个函数static intgatt_svr_chr_access_uart_write(uint16_t conn_handle, uint16_t attr_handle,struct ble_gatt_access_ctxt *ctxt, void *arg)最终这个文件的内容如下/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * License); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * AS IS BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ #include assert.h #include stdio.h #include string.h #include stdlib.h #include rtthread.h #include sysinit/sysinit.h #include host/ble_hs.h #include host/ble_uuid.h #include bleuart/bleuart.h #include os/endian.h #include console/console.h #define MYNEWT_VAL_BLEUART_MAX_INPUT 120 /* ble uart attr read handle */ uint16_t g_bleuart_attr_read_handle; /* ble uart attr write handle */ uint16_t g_bleuart_attr_write_handle; /* Pointer to a console buffer */ char *console_buf; uint16_t g_console_conn_handle; /** * The vendor specific bleuart service consists of one write no-rsp characteristic * and one notification only read charateristic * o write no-rsp: a single-byte characteristic that can be written only * over a non-encrypted connection * o read: a single-byte characteristic that can always be read only via * notifications */ /* {6E400001-B5A3-F393-E0A9-E50E24DCCA9E} */ const ble_uuid128_t gatt_svr_svc_uart_uuid BLE_UUID128_INIT(0x9e, 0xca, 0xdc, 0x24, 0x0e, 0xe5, 0xa9, 0xe0, 0x93, 0xf3, 0xa3, 0xb5, 0x01, 0x00, 0x40, 0x6e); /* {6E400002-B5A3-F393-E0A9-E50E24DCCA9E} */ const ble_uuid128_t gatt_svr_chr_uart_write_uuid BLE_UUID128_INIT(0x9e, 0xca, 0xdc, 0x24, 0x0e, 0xe5, 0xa9, 0xe0, 0x93, 0xf3, 0xa3, 0xb5, 0x02, 0x00, 0x40, 0x6e); /* {6E400003-B5A3-F393-E0A9-E50E24DCCA9E} */ const ble_uuid128_t gatt_svr_chr_uart_read_uuid BLE_UUID128_INIT(0x9e, 0xca, 0xdc, 0x24, 0x0e, 0xe5, 0xa9, 0xe0, 0x93, 0xf3, 0xa3, 0xb5, 0x03, 0x00, 0x40, 0x6e); static int gatt_svr_chr_access_uart_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg); static const struct ble_gatt_svc_def gatt_svr_svcs[] { { /* Service: uart */ .type BLE_GATT_SVC_TYPE_PRIMARY, .uuid gatt_svr_svc_uart_uuid.u, .characteristics (struct ble_gatt_chr_def[]) { { .uuid gatt_svr_chr_uart_read_uuid.u, .val_handle g_bleuart_attr_read_handle, .access_cb gatt_svr_chr_access_uart_write, .flags BLE_GATT_CHR_F_NOTIFY, }, { /* Characteristic: Write */ .uuid gatt_svr_chr_uart_write_uuid.u, .access_cb gatt_svr_chr_access_uart_write, .flags BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_WRITE_NO_RSP, .val_handle g_bleuart_attr_write_handle, }, { 0, /* No more characteristics in this service */ } }, }, { 0, /* No more services */ }, }; static int gatt_svr_chr_access_uart_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg) { struct os_mbuf *om ctxt-om; switch (ctxt-op) { case BLE_GATT_ACCESS_OP_WRITE_CHR: while (om) { /* 打印接收到的数据 */ rt_kprintf([BLE RX] len%d, data, om-om_len); rt_kprintf(%.*s, om-om_len, om-om_data); console_write((char *)om-om_data, om-om_len); /* 将数据回传给APP */ bleuart_send_to_phone((char *)om-om_data, om-om_len); om SLIST_NEXT(om, om_next); } rt_kprintf(\n); console_write(\n, 1); return 0; default: assert(0); return BLE_ATT_ERR_UNLIKELY; } } /** * bleuart GATT server initialization * * param eventq * return 0 on success; non-zero on failure */ int bleuart_gatt_svr_init(void) { int rc; rc ble_gatts_count_cfg(gatt_svr_svcs); if (rc ! 0) { goto err; } rc ble_gatts_add_svcs(gatt_svr_svcs); if (rc ! 0) { return rc; } err: return rc; } /** * Reads console and sends data over BLE */ static void bleuart_uart_read(void) { int rc; int off; int full_line; struct os_mbuf *om; off 0; while (1) { rc console_read(console_buf off, MYNEWT_VAL(BLEUART_MAX_INPUT) - off, full_line); if (rc 0 !full_line) { continue; } off rc; if (!full_line) { continue; } om ble_hs_mbuf_from_flat(console_buf, off); if (!om) { return; } ble_gatts_notify_custom(g_console_conn_handle, g_bleuart_attr_read_handle, om); off 0; break; } } /** * Sets the global connection handle * * param connection handle */ void bleuart_set_conn_handle(uint16_t conn_handle) { g_console_conn_handle conn_handle; } /** * Send data to phone via BLE Notify * * param data pointer to data to send * param len length of data * return 0 on success, negative on error */ int bleuart_send_to_phone(const char *data, int len) { struct os_mbuf *om; if (g_console_conn_handle 0) { rt_kprintf([BLE TX] No connection!\n); return -1; } if (len MYNEWT_VAL_BLEUART_MAX_INPUT) { len MYNEWT_VAL_BLEUART_MAX_INPUT; } om ble_hs_mbuf_from_flat(data, len); if (!om) { rt_kprintf([BLE TX] Mbuf alloc failed!\n); return -1; } ble_gatts_notify_custom(g_console_conn_handle, g_bleuart_attr_read_handle, om); rt_kprintf([BLE TX] Sent %d bytes to phone\n, len); return 0; } /** * MSH command to send test data to phone */ static void bleuart_test_tx(int argc, char **argv) { const char *test_data Hello from Art-Pi!; if (argc 1) { /* Use provided data */ bleuart_send_to_phone(argv[1], strlen(argv[1])); } else { /* Send default test message */ bleuart_send_to_phone(test_data, strlen(test_data)); } } MSH_CMD_EXPORT_ALIAS(bleuart_test_tx, ble_tx, send data to phone via BLE); /** * BLEuart console initialization * * param Maximum input */ void bleuart_init(void) { int rc; /* Ensure this function only gets called by sysinit. */ SYSINIT_ASSERT_ACTIVE(); rc console_init(bleuart_uart_read); SYSINIT_PANIC_ASSERT(rc 0); console_buf malloc(MYNEWT_VAL(BLEUART_MAX_INPUT)); SYSINIT_PANIC_ASSERT(console_buf ! NULL); }调整以下文件内容packages\NimBLE-latest\porting\npl\rtthread\include\console.h/* * SPDX-License-Identifier: Apache-2.0 * * Date Author Notes * 2018-12-29 ChenYong first implementation * 2022-05-20 Jackistang remove MODLOG_DFLT */ #ifndef __CONSOLE_H__ #define __CONSOLE_H__ #include rtthread.h #define console_printf rt_kprintf #ifdef __cplusplus extern C { #endif typedef void (*console_rx_callback_t)(void); int console_read(char *buf, int size, int *full_line); int console_init(console_rx_callback_t callback); int console_write(const char *str, int len); #ifdef __cplusplus } #endif #endifpackages\NimBLE-latest\porting\npl\rtthread\src\npl_shell.c修改\packages\NimBLE-latest\porting\npl\rtthread\src\nimble_port_rtthread.c/* * SPDX-License-Identifier: Apache-2.0 * * Date Author Notes * 2018-12-18 ChenYong first implementation * 2021-08-19 WaterFishJ fix the assert bug */ #include stddef.h #include rtthread.h #include rthw.h #include rtdevice.h #include syscfg/syscfg.h #include nimble/nimble_port.h #include console/console.h #if NIMBLE_CFG_CONTROLLER static rt_thread_t ll_task_h; #endif extern void ble_ll_task(void *arg); /* Console rx callback for bleuart */ static console_rx_callback_t g_console_rx_cb RT_NULL; static struct rt_semaphore g_console_rx_sem; /** * Console read - reads characters from console device * Returns: number of characters read, 0 if no data, negative on error */ int console_read(char *buf, int size, int *full_line) { int ch; int read_cnt 0; rt_device_t device; *full_line 0; device rt_device_find(RT_CONSOLE_DEVICE_NAME); if (device RT_NULL) { return 0; } if (rt_object_get_type(device-parent) ! RT_Object_Class_Device) { return 0; } while (read_cnt size) { /* Wait for a short time */ rt_thread_mdelay(10); ch rt_device_read(device, -1, RT_NULL, 0); if (ch 0) { if (read_cnt 0) { continue; } break; } buf[read_cnt] (char)ch; /* Check for newline */ if (ch \n || ch \r) { *full_line 1; break; } } return read_cnt; } /** * Console init - initializes console with rx callback */ int console_init(console_rx_callback_t callback) { g_console_rx_cb callback; /* Initialize semaphore for console rx */ rt_sem_init(g_console_rx_sem, console_rx, 0, RT_IPC_FLAG_FIFO); return 0; } /** * Console write - writes string to console */ int console_write(const char *str, int len) { rt_device_t device; device rt_device_find(RT_CONSOLE_DEVICE_NAME); if (device RT_NULL) { return 0; } if (rt_object_get_type(device-parent) ! RT_Object_Class_Device) { return 0; } return rt_device_write(device, 0, str, len); } #ifdef RT_DEBUG RT_WEAK void __aeabi_assert(const char *expr, const char *file, int line) { rt_assert_handler(expr, file, line); } #endif int nimble_port_rtthread_init(void) { nimble_port_init(); #if NIMBLE_CFG_CONTROLLER /* * Create task where NimBLE LL will run. This one is required as LL has its * own event queue and should have highest priority. The task function is * provided by NimBLE and in case of FreeRTOS it does not need to be wrapped * since it has compatible prototype. */ ll_task_h rt_thread_create(ll, ble_ll_task, NULL, MYNEWT_VAL(BLE_CTLR_THREAD_STACK_SIZE), MYNEWT_VAL(BLE_CTLR_THREAD_PRIORITY), 10); if (ll_task_h ! RT_NULL) rt_thread_startup(ll_task_h); #endif return 0; } void ble_hs_thread_entry(void *parameter) { nimble_port_run(); } void ble_hs_thread_startup(void) { rt_thread_t tid; tid rt_thread_create(host, ble_hs_thread_entry, NULL, MYNEWT_VAL(BLE_HOST_THREAD_STACK_SIZE), MYNEWT_VAL(BLE_HOST_THREAD_PRIORITY), 10); if (tid ! RT_NULL) rt_thread_startup(tid); } INIT_COMPONENT_EXPORT(nimble_port_rtthread_init);此时编译已经无错误。下载到板子之后等待系统启动。输入bleuart指令启动协议栈和蓝牙线程。打开手机蓝牙APP软件连接Mynewt_BLEuart这个蓝牙。点击 Notify下的Subscribe订阅按钮然后在回到另一个UUID下Write 下输入数据就可以进行测试了。在串口上位机显示如下所示通过以上的步骤就可以完成手机APP和蓝牙通信进而实现手机和ART-PI板的互相通信。
