通過單片機32作為主控制器，完成對人體血壓的測量，主要方式是通過氣壓模塊來模擬完成對血壓的采集，同時將采集到的血壓數據在顯示屏上進顯示。

同時可以通過按鍵對整個血壓上下限值進行設定，一旦超過，則報警。

相關代碼

uint8_t tx_buf[24]; uint8_t rx_buf[24];/*crc校驗表*/ 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 };//開啟血壓測量 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};//關閉血壓測量 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};//獲取血壓測量結果 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校驗 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發送 void HP_Send_Cmd_Config(u8 *cmd) {u8 i;HP_Send_Start(4);//起始條件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發送命令 u8 HP_Send_Cmd(u8 *tx_buf, u8*rx_buf) {u16 crc;u16 check_sum = 0;crc = Crc16(&tx_buf[4],18);//數據校驗*(uint16_t*)(&tx_buf[22]) = crc;HP_Send_Cmd_Config(tx_buf);//發送命令Delay_ms(5);//寫周期的間隔HP_Rec_Cmd_Config(rx_buf);crc = *(uint16_t*)(&rx_buf[22]); //校驗確定讀回來的是否為有效數據check_sum = Crc16(&rx_buf[4],18);if(crc == check_sum){return 1;}return 0; } //開啟血壓測量 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("血壓開啟成功！");return 1;}elseprintf("血壓開啟失敗！");return 0;} }//獲取測量結果 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); }//關閉血壓測量 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("測量中\r\n");}else if(rx_buf[7]==1){printf("測量完成\r\n");printf("高壓:%d\r\n",rx_buf[10]);printf("低壓:%d\r\n",rx_buf[11]); Close_Bm();} else if(rx_buf[7]==2){printf("測量失敗\r\n");Close_Bm();} delay_ms(1280);} }

源碼:
https://gitee.com/sinonfin/sharing

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