驱动文件

头文件

//
// Created by shchl on 2024/2/22.
//#ifndef F4_PROJECT_BLE_HC05_H
#define F4_PROJECT_BLE_HC05_H#include "bsp.h"
#include "bsp_uart.h"typedef enum {hc05_resp_ok_status, /*接收正确*/hc05_resp_timeout_status, /*超时*/hc05_resp_fail_status /*失败*/
} hc05_resp_status; /*hc05响应状态*/void hc05_device_init(void);/*-----------------------------底层驱动需要实现的接口----------------------------------------*/extern void hc05_device_send(const char *cmd);extern char *hc05_device_wait_resp(void); /*等待设备响应数据*/
extern void hc05_device_enter_at_mode(void); /*进入AT模式*/
extern void hc05_device_quit_at_mode(void); /*退出AT模式*/
/*** 接收来自远端的数据(非阻塞)* @param dst* @return*/
extern uint16_t hc05_device_rec_remote_data(uint8_t *dst);
extern uint16_t hc05_device_send_remote_data(uint8_t *dst,uint16_t len);
/*---------------------------------------------------------------------*/void hc05_set_delay_cb(void (*delay_ms_call)(uint32_t));hc05_resp_status hc05_set_cmd(const char *cmd);char *hc05_query_cmd(const char *cmd);void hc05_delay_ms(uint32_t ms);hc05_resp_status hc05_check(uint8_t tryCnt);hc05_resp_status hc05_read_version(char *dst);hc05_resp_status hc05_read_work_stat(char *dst);hc05_resp_status hc05_read_addr(char *dst);hc05_resp_status hc05_read_name(char *dst);hc05_resp_status hc05_read_role(char *dst);hc05_resp_status hc05_read_pwd(char *dst);hc05_resp_status hc05_read_uart_cnf(char *dst);#endif //F4_PROJECT_BLE_HC05_H

源文件

//
// Created by shchl on 2024/2/22.
//#include "ble_hc05.h"static bool hc05_sub_str(char *dst, const char *src, char *prefix_str, char *suffix_str);static void (*hc05_delay_call)(uint32_t) =NULL;void hc05_set_delay_cb(void (*delay_ms_call)(uint32_t)) {hc05_delay_call = delay_ms_call;
}void hc05_delay_ms(uint32_t ms) {if (hc05_delay_call) {hc05_delay_call(ms);}
}/*** 设置指令* @param cmd*/
hc05_resp_status hc05_set_cmd(const char *cmd) {char *result = hc05_query_cmd(cmd);if (strstr(result, "OK")) {return hc05_resp_ok_status;} else if (strstr(result, "FAIL")) {return hc05_resp_fail_status;}return hc05_resp_timeout_status;}/*** 查询指令,并返回查询数据结果* @param cmd* @return*/
char *hc05_query_cmd(const char *cmd) {/*进入 AT模式*/hc05_device_enter_at_mode();hc05_delay_ms(10);hc05_device_send(cmd);//发送并接收/*退出 AT模式*/hc05_device_quit_at_mode();return hc05_device_wait_resp();}/*** @brief 蓝牙设备模块检测* @return*/
hc05_resp_status hc05_check(uint8_t tryCnt) {for (uint8_t i = 0; i < tryCnt; ++i) {if (hc05_set_cmd("AT\r\n") == hc05_resp_ok_status) {return hc05_resp_ok_status;}}return hc05_resp_timeout_status;
}/*** 获取蓝牙设备版本号* @param dst 保存位置* @return*/
hc05_resp_status hc05_read_version(char *dst) {char *ptr = hc05_query_cmd("AT+VERSION?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "VERSION:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}
hc05_resp_status hc05_read_work_stat(char *dst){char *ptr = hc05_query_cmd("AT+STATE?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "STATE:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}hc05_resp_status hc05_read_addr(char *dst){char *ptr = hc05_query_cmd("AT+ADDR?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "ADDR:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}hc05_resp_status hc05_read_name(char *dst){char *ptr = hc05_query_cmd("AT+NAME?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "NAME:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}hc05_resp_status hc05_read_role(char *dst){char *ptr = hc05_query_cmd("AT+ROLE?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "ROLE:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}hc05_resp_status hc05_read_pwd(char *dst){char *ptr = hc05_query_cmd("AT+PSWD?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "PSWD:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}hc05_resp_status hc05_read_uart_cnf(char *dst){char *ptr = hc05_query_cmd("AT+UART?\r\n"); /**/if (ptr) {if (hc05_sub_str(dst, ptr, "UART:", "\r\n")) {return hc05_resp_ok_status;}return hc05_resp_fail_status;}return hc05_resp_timeout_status;
}/*** @brief 提取字符串到指定位置* @param dst 保存子串* @param src 原始字符串* @param prefix_str 前缀(可以为NULL)* @param suffix_str 后缀(可以为NULL)* @return 是否提取成功*/
static bool hc05_sub_str(char *dst, const char *src, char *prefix_str, char *suffix_str) {const char *ptr_src = src;size_t sub_len; /*字串长度*/if (!ptr_src) return true;if (prefix_str != NULL) {ptr_src = strstr(ptr_src, prefix_str); /*查找前缀位置*/if (!ptr_src) return false;ptr_src += strlen(prefix_str); /**/}if (suffix_str) {char *endPtr = strstr(ptr_src, suffix_str);if (!endPtr) return false;sub_len = endPtr - ptr_src;} else {sub_len = strlen(ptr_src);}memcpy(dst, ptr_src, sub_len);dst[sub_len] = '\0'; /*添加结束符*/return true;
}

接口文件(对应硬件)

//
// Created by shchl on 2024/2/22.
//
#include "ble_hc05.h"#define HC05_AT_GPIO_PIN GPIO_PIN_9
#define HC05_AT_GPIO_PORT GPIOC
#define HC05_AT_GPIO_CLK_EN() __HAL_RCC_GPIOC_CLK_ENABLE()
#define hc05_uart_dev uart1_dev
static bool isCmdDatResp = false; /*是发送 指令数据标志位*/static void hc05_device_start_rec(void);static uint8_t hc05_rx_buf[UART1_RX_BUF_LEN];void hc05_device_init(void) {/*设置对应的延迟函数回调*/hc05_set_delay_cb(HAL_Delay);/*对应GPIO硬件初始化*/HC05_AT_GPIO_CLK_EN();GPIO_InitTypeDef GPIO_Init;GPIO_Init.Pin = HC05_AT_GPIO_PIN;GPIO_Init.Mode = GPIO_MODE_OUTPUT_PP;GPIO_Init.Pull = GPIO_PULLDOWN;GPIO_Init.Speed = GPIO_SPEED_MEDIUM;HAL_GPIO_Init(HC05_AT_GPIO_PORT, &GPIO_Init);/*对应串口硬件初始化*/uart1_dev_init(115200);hc05_device_start_rec();/*退出at模式*/hc05_device_quit_at_mode();}__weak void hc05_device_send(const char *cmd) {HAL_UART_Transmit(&hc05_uart_dev.uart_handle, (uint8_t *) cmd, strlen(cmd), 20);
}__weak char *hc05_device_wait_resp(void) {for (int i = 0; i < 10; ++i) {hc05_delay_ms(10);uint32_t len = CacheBuffer_Read_Data(hc05_uart_dev.rx_cache_ptr, hc05_rx_buf);if (len > 0) {hc05_rx_buf[len] = '\0';
//            printf("HC05_Rec_Str len:%lu,data:%s\r\n", len, hc05_rx_buf);return (char *) hc05_rx_buf;}}return NULL;
}__weak uint16_t hc05_device_rec_remote_data(uint8_t *dst) {hc05_device_quit_at_mode();return CacheBuffer_Read_Data(hc05_uart_dev.rx_cache_ptr, dst);
}uint16_t hc05_device_send_remote_data(uint8_t *dst,uint16_t len){hc05_device_quit_at_mode();HAL_UART_Transmit(&hc05_uart_dev.uart_handle, dst, len, 20);return len;
}
__weak void hc05_device_enter_at_mode(void) {HAL_GPIO_WritePin(HC05_AT_GPIO_PORT, HC05_AT_GPIO_PIN, GPIO_PIN_SET);
}__weak void hc05_device_quit_at_mode(void) {HAL_GPIO_WritePin(HC05_AT_GPIO_PORT, HC05_AT_GPIO_PIN, GPIO_PIN_RESET);
}/*** 串口函数回调中使用* @param Size*/
void HAL_UARTEx_RxEventCallback_HC05(uint16_t Size) {CacheBuffer_Update_Data_Len(hc05_uart_dev.rx_cache_ptr, Size);/*重新接收数据*/hc05_device_start_rec();
}static void hc05_device_start_rec(void) {HAL_UARTEx_ReceiveToIdle_DMA(&hc05_uart_dev.uart_handle,hc05_uart_dev.rx_cache_ptr->List[hc05_uart_dev.rx_cache_ptr->InIndex].start,CACHE_BUFFER_ONE_DATA_MAX_LEN);
}

串口驱动文件(针对stm32f4芯片,根据需要修改)

bsp_uart.h

//
// Created by shchl on 2024/2/21.
//#ifndef BSP_UART_H
#define BSP_UART_H#include "bsp.h"#include "cachebuffer.h"#define UART_PRINTF_DEV uart2_dev.uart_handle
/*-----------------------------------串口1配置----------------------------------------*/
#define UART1_DEV_RX_CACHE_ENABLE               1        /*串口1设备接收缓冲区使能*/
#define UART1_DEV_TX_CACHE_ENABLE               0         /*串口1设备发送缓冲区使能*/
#define UART1_IT_ENABLE                         1                   /*串口1中断*/#define UART1_RX_BUF_LEN                        1024
#define UART1_TX_BUF_LEN                        1024
/*-----------------------------------串口2配置----------------------------------------*/
#define UART2_DEV_RX_CACHE_ENABLE               0       /*串口2设备接收缓冲区使能*/
#define UART2_DEV_TX_CACHE_ENABLE               0       /*串口2设备发送缓冲区使能*/
#define UART2_IT_ENABLE                         0       /*串口2中断*/
#define UART2_RX_BUF_LEN                        1024
#define UART2_TX_BUF_LEN                        1024
typedef struct {CacheBuffer_t *rx_cache_ptr; /*接收缓存*/CacheBuffer_t *tx_cache_ptr; /*发送缓存*/UART_HandleTypeDef uart_handle;
} uart_dev_t; /*串口设备*/
extern uart_dev_t uart1_dev;
extern uart_dev_t uart2_dev;
void uart1_dev_init(uint32_t baud);void uart2_dev_init(uint32_t baud);#endif //BSP_UART_H

bsp_uart.c

//
// Created by shchl on 2024/2/21.
//#include "bsp_uart.h"static void uart_conf_init(UART_HandleTypeDef *uart_handle, uint32_t baud);uart_dev_t uart1_dev = {.uart_handle.Instance=USART1};
#if UART1_DEV_RX_CACHE_ENABLE
static CacheBuffer_t uart1_rx_cache;
static uint8_t uart1_rx_buf[UART1_RX_BUF_LEN] = {0};
#endif
#if UART1_DEV_TX_CACHE_ENABLE
static CacheBuffer_t uart1_tx_cache;
static uint8_t uart1_tx_buf[UART1_TX_BUF_LEN] = {0};
#endif/*** 重写串口printf* @param file* @param ptr* @param len* @return*/
int _write(int file, char *ptr, int len)
{(void)file;HAL_UART_Transmit(&UART_PRINTF_DEV, (const uint8_t *) ptr, len, 200);return len;
}
void uart1_dev_init(uint32_t baud) {
#if UART1_DEV_RX_CACHE_ENABLEuart1_dev.rx_cache_ptr = &uart1_rx_cache;CacheBuffer_Init(uart1_dev.rx_cache_ptr, uart1_rx_buf, UART1_RX_BUF_LEN);#endif#if UART1_DEV_TX_CACHE_ENABLEuart1_dev.tx_cache_ptr = &uart1_tx_cache;CacheBuffer_Init(uart1_dev.tx_cache_ptr, uart1_tx_buf, UART1_TX_BUF_LEN);
#endifuart_conf_init(&uart1_dev.uart_handle, baud);
}uart_dev_t uart2_dev = {.uart_handle.Instance=USART2};
#if UART2_DEV_RX_CACHE_ENABLE
static CacheBuffer_t uart2_rx_cache;
static uint8_t uart2_rx_buf[UART2_RX_BUF_LEN] = {0};
#endif
#if UART2_DEV_TX_CACHE_ENABLE
static CacheBuffer_t uart2_tx_cache;
static uint8_t uart2_tx_buf[UART2_TX_BUF_LEN] = {0};
#endif/*** @brief 串口2设备 初始化* @param baud*/
void uart2_dev_init(uint32_t baud) {
#if UART2_DEV_RX_CACHE_ENABLEuart2_dev.rx_cache_ptr = &uart2_rx_cache;CacheBuffer_Init(uart2_dev.rx_cache_ptr, uart2_rx_buf, UART2_RX_BUF_LEN);#endif#if UART2_DEV_TX_CACHE_ENABLEuart2_dev.tx_cache_ptr = &uart2_tx_cache;CacheBuffer_Init(uart2_dev.tx_cache_ptr, uart2_tx_buf, UART2_TX_BUF_LEN);
#endifuart_conf_init(&uart2_dev.uart_handle, baud);
}static void uart_conf_init(UART_HandleTypeDef *uart_handle, uint32_t baud) {uart_handle->Init.BaudRate = baud;uart_handle->Init.WordLength = UART_WORDLENGTH_8B;uart_handle->Init.StopBits = UART_STOPBITS_1;uart_handle->Init.Parity = UART_PARITY_NONE;uart_handle->Init.Mode = UART_MODE_TX_RX;uart_handle->Init.HwFlowCtl = UART_HWCONTROL_NONE;uart_handle->Init.OverSampling = UART_OVERSAMPLING_16;if (HAL_UART_Init(uart_handle) != HAL_OK) {Error_Handler();}
}

缓冲区文件(通用)

cachebuffer.h

//
// Created by shchl on 2024/2/21.
//#ifndef F4_DEMO_CACHEBUFFER_H
#define F4_DEMO_CACHEBUFFER_H#include <stdbool.h>
#include "stdio.h"
#include "string.h"#define CACHE_BUFFER_PARM_ASSERT(x)
#define CACHE_BUFFER_LIST_LEN 10 /*默认可以缓存10条数据，根据需要进行修改*/
#define CACHE_BUFFER_ONE_DATA_MAX_LEN 256 /*一条数据最大长度*/#define CACHE_BUFFER_MEMCPY memcpy
typedef struct {uint8_t *start;  /*起始位置*/uint8_t *end;   /*结束位置*/
} CacheIndexPtr_t; /*缓冲索引指针结构体*/typedef struct {uint32_t Count; /*累积缓存字节数*/uint16_t InIndex: 8; /*数据写入索引位置*/uint16_t OutIndex: 8; /*数据读出索引位置*/uint8_t *pBuf; /*实际数据指针存放位置*/uint32_t pBufCapacity; /*实际存放位置的容量*/CacheIndexPtr_t List[CACHE_BUFFER_LIST_LEN]; /*缓冲索引指针结构体集合*/
} CacheBuffer_t; /*缓冲Buffer结构体*/void CacheBuffer_Init(CacheBuffer_t *cacheBuffer, uint8_t *pool, int16_t size);void CacheBuffer_Update_Data_Len(CacheBuffer_t *cacheBuffer, uint32_t len);void CacheBuffer_Write_Data(CacheBuffer_t *cacheBuffer, uint8_t *pData, uint32_t len);uint32_t CacheBuffer_Read_Data(CacheBuffer_t *cacheBuffer, uint8_t *dst);#endif //F4_DEMO_CACHEBUFFER_H

cachebuffer.c

//
// Created by shchl on 2024/2/21.
//#include "cachebuffer.h"void CacheBuffer_Init(CacheBuffer_t *cacheBuffer, uint8_t *pool, int16_t size) {CACHE_BUFFER_PARM_ASSERT(cacheBuffer != NULL);CACHE_BUFFER_PARM_ASSERT(pool != NULL);cacheBuffer->pBufCapacity = size;cacheBuffer->InIndex = 0;cacheBuffer->OutIndex = 0;cacheBuffer->Count = 0;cacheBuffer->pBuf = pool;cacheBuffer->List[cacheBuffer->InIndex].start = pool;
}/*** @brief 缓存区更新数据长度,适用于缓冲区数据长度已更新,而数据长度未更新* @param cacheBuffer* @param len*/
void CacheBuffer_Update_Data_Len(CacheBuffer_t *cacheBuffer, uint32_t len) {cacheBuffer->Count += len;cacheBuffer->List[cacheBuffer->InIndex].end = cacheBuffer->pBuf + cacheBuffer->Count - 1;cacheBuffer->InIndex++;if (cacheBuffer->InIndex == CACHE_BUFFER_LIST_LEN) {/*判断是否已经到了最后的位置*/cacheBuffer->InIndex = 0;}/*判断是否需要覆盖数据*/if (cacheBuffer->pBufCapacity - cacheBuffer->Count < CACHE_BUFFER_ONE_DATA_MAX_LEN) {cacheBuffer->Count = 0;cacheBuffer->List[cacheBuffer->InIndex].start = cacheBuffer->pBuf;} else {cacheBuffer->List[cacheBuffer->InIndex].start = cacheBuffer->pBuf + cacheBuffer->Count;}
}void CacheBuffer_Write_Data(CacheBuffer_t *cacheBuffer, uint8_t *pData, uint32_t len) {/*确定写入数据位置*/if (cacheBuffer->pBufCapacity - cacheBuffer->Count < len) {/*判断写入数据是否大于剩下空间*/cacheBuffer->Count = 0;cacheBuffer->List[cacheBuffer->InIndex].start = cacheBuffer->pBuf;} else {cacheBuffer->List[cacheBuffer->InIndex].start = cacheBuffer->pBuf + cacheBuffer->Count;}CACHE_BUFFER_MEMCPY(cacheBuffer->List[cacheBuffer->InIndex].start, pData, len);cacheBuffer->Count += len;cacheBuffer->List[cacheBuffer->InIndex].end = cacheBuffer->pBuf + cacheBuffer->Count - 1;cacheBuffer->InIndex++;if (cacheBuffer->InIndex == CACHE_BUFFER_LIST_LEN) {/*判断是否已经到了最后的位置*/cacheBuffer->InIndex = 0;}
}uint32_t CacheBuffer_Read_Data(CacheBuffer_t *cacheBuffer, uint8_t *dst) {//判断是否有数据CacheIndexPtr_t *ptr;uint32_t len = 0;if (cacheBuffer->OutIndex != cacheBuffer->InIndex) {// 有数据ptr = &cacheBuffer->List[cacheBuffer->OutIndex];len = ptr->end - ptr->start + 1;CACHE_BUFFER_MEMCPY(dst, ptr->start, len);cacheBuffer->OutIndex++;if (cacheBuffer->OutIndex == CACHE_BUFFER_LIST_LEN) {cacheBuffer->OutIndex = 0; /*标记到最后位置*/}}return len;
}