毕业设计基于stm32的血压测量检测系统

通过单片机32作为主控制器，完成对人体血压的测量，主要方式是通过气压模块来模拟完成对血压的采集，同时将采集到的血压数据在显示屏上进显示。

同时可以通过按键对整个血压上下限值进行设定，一旦超过，则报警。

在这里插入图片描述

相关代码


uint8_t tx_buf[24];
uint8_t rx_buf[24];/*crc校验表*/
const uint16_t crc16_tab[256] =
{0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,   0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,   0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,   0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,   0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,   0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,   0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,   0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,   0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,   0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,   0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,   0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,   0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,   0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,   0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,   0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,   0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,  0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,   0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,   0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,   0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,   0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,   0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,   0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,   0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,   0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,   0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,   0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,   0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,   0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,   0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,   0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 
};//开启血压测量
const uint8_t bm_open[]=
{0xc8,0xd7,0xb6,0xa5,0x90,0x01,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};//关闭血压测量
const uint8_t bm_close[]=
{0xc8,0xd7,0xb6,0xa5,0x90,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};//获取血压测量结果
const uint8_t bm_result[]=
{0xc8,0xd7,0xb6,0xa5,0x90,0x02,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};//CRC校验
uint16_t Crc16(uint8_t *data,uint16_t len)
{uint16_t crc16 = 0xFFFF;uint32_t uIndex ; while (len--){uIndex = (crc16&0xff) ^ ((*data) & 0xff) ; data = data + 1;crc16 = ((crc16>>8) & 0xff) ^ crc16_tab[uIndex];}return crc16 ;
}
//HP6发送
void HP_Send_Cmd_Config(u8 *cmd)
{u8 i;HP_Send_Start(4);//起始条件HP_I2c_Send_Data(HP_WRITE_ADDRESS,4);for(i = 0; i < 24; i++){HP_I2c_Send_Data(*(cmd+i),4);}HP_Send_Stop(4);
}//HP6接收
void HP_Rec_Cmd_Config(u8 *data)
{u8 i;HP_Send_Start(4);HP_I2c_Send_Data(HP_READ_ADDRESS,4);for(i = 0; i < 23; i++){*(data+i) = HP_I2c_Rec_Data(0,4);}*(data+23) = HP_I2c_Rec_Data(1,4);HP_Send_Stop(4);
}//HP6发送命令
u8 HP_Send_Cmd(u8 *tx_buf, u8*rx_buf)
{u16 crc;u16 check_sum = 0;crc = Crc16(&tx_buf[4],18);//数据校验*(uint16_t*)(&tx_buf[22]) = crc;HP_Send_Cmd_Config(tx_buf);//发送命令Delay_ms(5);//写周期的间隔HP_Rec_Cmd_Config(rx_buf);crc = *(uint16_t*)(&rx_buf[22]); //校验确定读回来的是否为有效数据check_sum = Crc16(&rx_buf[4],18);if(crc == check_sum){return 1;}return 0;
}
//开启血压测量
u8 Bm_Open(void)
{u8 i;for(i = 0; i < 24; i++){tx_buf[i] = bm_open[i];}if(HP_Send_Cmd(tx_buf, rx_buf)){if(rx_buf[6] == 1){printf("血压开启成功！");return 1;}elseprintf("血压开启失败！");return 0;}
}//获取测量结果
u8 Get_Bm_Result(void)
{u8 i;for(i = 0; i < 24; i++){tx_buf[i] = bm_result[i];}return HP_Send_Cmd(tx_buf, rx_buf);
}//关闭血压测量
u8 Close_Bm(void)
{u8 i;for(i = 0; i < 24; i++){tx_buf[i] = bm_close[i];}return HP_Send_Cmd(tx_buf, rx_buf);
}

int main(void)
{Hp6_Iic_init();Bm_Open();delay_ms(2560);while(1){Get_Bm_Result();if(rx_buf[7]==0){printf("测量中\r\n");}else if(rx_buf[7]==1){printf("测量完成\r\n");printf("高压:%d\r\n",rx_buf[10]);printf("低压:%d\r\n",rx_buf[11]);	Close_Bm();}	else if(rx_buf[7]==2){printf("测量失败\r\n");Close_Bm();}	delay_ms(1280);}
}