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MAX30102基于STM32F103C8T6的程序源码

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ID:527176 发表于 2019-5-9 15:40 | 显示全部楼层 |阅读模式
单片机源程序如下:
  1. /** \file main.cpp ******************************************************
  2. *
  3. * Project: STM32F103C8T6+MAX30102
  4. * Edited by Anning
  5. * ------------------------------------------------------------------------- */
  6. /*******************************************************************************
  7. * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
  8. *
  9. /*!\mainpage Main Page
  10. *
  11. * \section intro_sec Introduction
  12. *
  13. * This is the code documentation for the MAXREFDES117# subsystem reference design.
  14. *
  15. *  The Files page contains the File List page and the Globals page.
  16. *
  17. *  The Globals page contains the Functions, Variables, and Macros sub-pages.
  18. *
  19. * \image html MAXREFDES117_Block_Diagram.png "MAXREFDES117# System Block Diagram"
  20. *
  21. * \image html MAXREFDES117_firmware_Flowchart.png "MAXREFDES117# Firmware Flowchart"
  22. *
  23. */
  24. #include "stm32f103c8t6.h"
  25. #include "mbed.h"
  26. #include "algorithm.h"
  27. #include "MAX30102.h"

  29. #define MAX_BRIGHTNESS 255

  31. uint32_t aun_ir_buffer[500]; //IR LED sensor data
  32. int32_t n_ir_buffer_length;    //data length
  33. uint32_t aun_red_buffer[500];    //Red LED sensor data
  34. int32_t n_sp02; //SPO2 value
  35. int8_t ch_spo2_valid;   //indicator to show if the SP02 calculation is valid
  36. int32_t n_heart_rate;   //heart rate value
  37. int8_t  ch_hr_valid;    //indicator to show if the heart rate calculation is valid
  38. uint8_t uch_dummy;

  40. Serial pc(SERIAL_TX, SERIAL_RX);    //initializes the serial port, TX-PA2, RX-PA3

  42. PwmOut pwmled(PB_3);  //initializes the pwm output PB3 that connects to the LED
  43. DigitalIn INT(PB_7);  //pin PB7 connects to the interrupt output pin of the MAX30102
  44. DigitalOut led(PC_13); //PC13 connects to the on board user LED


  47. // the setup routine runs once when you press reset:
  48. int main() {
  49.     uint32_t un_min, un_max, un_prev_data;  //variables to calculate the on-board LED brightness that reflects the heartbeats
  50.     int i;
  51.     int32_t n_brightness;
  52.     float f_temp;
  53.    
  54.     maxim_max30102_reset(); //resets the MAX30102
  55.     // initialize serial communication at 115200 bits per second:
  56.     pc.baud(115200);
  57.     pc.format(8,SerialBase::None,1);
  58.     wait(1);
  59.    
  60.     //read and clear status register
  61.     maxim_max30102_read_reg(0,&uch_dummy);
  62.    
  63.     //wait until the user presses a key
  64. //    while(pc.readable()==0)
  65. //    {
  66. //        pc.printf("\x1B[2J");  //clear terminal program screen
  67. //        pc.printf("Press any key to start conversion\n\r");
  68. //        wait(1);
  69. //    }
  70. //    uch_dummy=getchar();
  71.    
  72.     maxim_max30102_init();  //initializes the MAX30102
  73.         
  74.         
  75.     n_brightness=0;
  76.     un_min=0x3FFFF;
  77.     un_max=0;
  78.   
  79.     n_ir_buffer_length=500; //buffer length of 100 stores 5 seconds of samples running at 100sps
  80.    
  81.     //read the first 500 samples, and determine the signal range
  82.     for(i=0;i<n_ir_buffer_length;i++)
  83.     {
  84.         while(INT.read()==1);   //wait until the interrupt pin asserts
  85.         
  86.         maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));  //read from MAX30102 FIFO
  87.             
  88.         if(un_min>aun_red_buffer[i])
  89.             un_min=aun_red_buffer[i];    //update signal min
  90.         if(un_max<aun_red_buffer[i])
  91.             un_max=aun_red_buffer[i];    //update signal max
  92.         pc.printf("red=");
  93.         pc.printf("%i", aun_red_buffer[i]);
  94.         pc.printf(", ir=");
  95.         pc.printf("%i\n\r", aun_ir_buffer[i]);
  96.     }
  97.     un_prev_data=aun_red_buffer[i];
  98.    
  99.    
  100.     //calculate heart rate and SpO2 after first 500 samples (first 5 seconds of samples)
  101.     maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid);
  102.    
  103.     //Continuously taking samples from MAX30102.  Heart rate and SpO2 are calculated every 1 second
  104.     while(1)
  105.     {
  106.         i=0;
  107.         un_min=0x3FFFF;
  108.         un_max=0;
  109.         
  110.         //dumping the first 100 sets of samples in the memory and shift the last 400 sets of samples to the top
  111.         for(i=100;i<500;i++)
  112.         {
  113.             aun_red_buffer[i-100]=aun_red_buffer[i];
  114.             aun_ir_buffer[i-100]=aun_ir_buffer[i];
  115.             
  116.             //update the signal min and max
  117.             if(un_min>aun_red_buffer[i])
  118.             un_min=aun_red_buffer[i];
  119.             if(un_max<aun_red_buffer[i])
  120.             un_max=aun_red_buffer[i];
  121.         }
  122.         
  123.         //take 100 sets of samples before calculating the heart rate.
  124.         for(i=400;i<500;i++)
  125.         {
  126.             un_prev_data=aun_red_buffer[i-1];
  127.             while(INT.read()==1);
  128.             maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));
  129.         
  130.             if(aun_red_buffer[i]>un_prev_data)//just to determine the brightness of LED according to the deviation of adjacent two AD data
  131.             {
  132.                 f_temp=aun_red_buffer[i]-un_prev_data;
  133.                 f_temp/=(un_max-un_min);
  134.                 f_temp*=MAX_BRIGHTNESS;
  135.                 n_brightness-=(int)f_temp;
  136.                 if(n_brightness<0)
  137.                     n_brightness=0;
  138.             }
  139.             else
  140.             {
  141.                 f_temp=un_prev_data-aun_red_buffer[i];
  142.                 f_temp/=(un_max-un_min);
  143.                 f_temp*=MAX_BRIGHTNESS;
  144.                 n_brightness+=(int)f_temp;
  145.                 if(n_brightness>MAX_BRIGHTNESS)
  146.                     n_brightness=MAX_BRIGHTNESS;
  147.             }

  149.             pwmled.write(1-(float)n_brightness/256);//pwm control led brightness
  150.                                                 if(n_brightness<120)
  151.                                                         led=1;
  152.                                                 else
  153.                                                         led=0;

  155.             //send samples and calculation result to terminal program through UART
  156.             pc.printf("red=");
  157.             pc.printf("%i", aun_red_buffer[i]);
  158.             pc.printf(", ir=");
  159.             pc.printf("%i", aun_ir_buffer[i]);
  160.             pc.printf(", HR=%i, ", n_heart_rate);
  161.             pc.printf("HRvalid=%i, ", ch_hr_valid);
  162.             pc.printf("SpO2=%i, ", n_sp02);
  163.             pc.printf("SPO2Valid=%i\n\r", ch_spo2_valid);
  164.         }
  165.         maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid);
  166.     }
  167. }
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所有程序下载,如果有问题,请大家多多指导:
Nucleo_MAX30102.7z (557.01 KB, 下载次数: 133)

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参与人数 1黑币 +50 收起 理由
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ID:546524 发表于 2019-5-24 18:24 | 显示全部楼层
十分有帮助
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ID:404056 发表于 2019-7-22 16:57 | 显示全部楼层
很好
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ID:138247 发表于 2020-6-25 12:52 | 显示全部楼层

谢谢分享。。。
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ID:287575 发表于 2020-7-3 10:35 | 显示全部楼层
HR=-999, HRvalid=0, SpO2=-999, SPO2Valid=0
HR=-999, HRvalid=0, SpO2=-999, SPO2Valid=0
HR=-999, HRvalid=0, SpO2=-999, SPO2Valid=0
HR=-999, HRvalid=0, SpO2=-999, SPO2Valid=0

为什么我的数据是这样的，你的数据对吗？

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ID:695384 发表于 2020-7-6 16:56 | 显示全部楼层
  1. * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
  2. *
  3. * Permission is hereby granted, free of charge, to any person obtaining a
  4. * copy of this software and associated documentation files (the "Software"),
  5. * to deal in the Software without restriction, including without limitation
  6. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  7. * and/or sell copies of the Software, and to permit persons to whom the
  8. * Software is furnished to do so, subject to the following conditions:
  9. *
  10. * The above copyright notice and this permission notice shall be included
  11. * in all copies or substantial portions of the Software.
  12. *
  13. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  14. * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  15. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  16. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
  17. * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  18. * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  19. * OTHER DEALINGS IN THE SOFTWARE.
  20. *
  21. * Except as contained in this notice, the name of Maxim Integrated
  22. * Products, Inc. shall not be used except as stated in the Maxim Integrated
  23. * Products, Inc. Branding Policy.
  24. *
  25. * The mere transfer of this software does not imply any licenses
  26. * of trade secrets, proprietary technology, copyrights, patents,
  27. * trademarks, maskwork rights, or any other form of intellectual
  28. * property whatsoever. Maxim Integrated Products, Inc. retains all
  29. * ownership rights.
  30. *******************************************************************************
  31. */
  32. /*!\mainpage Main Page
  33. *
  34. * \section intro_sec Introduction
  35. *
  36. * This is the code documentation for the MAXREFDES117# subsystem reference design.
  37. *
  38. *  The Files page contains the File List page and the Globals page.
  39. *
  40. *  The Globals page contains the Functions, Variables, and Macros sub-pages.
  41. *
  42. * \image html MAXREFDES117_Block_Diagram.png "MAXREFDES117# System Block Diagram"
  43. *
  44. * \image html MAXREFDES117_firmware_Flowchart.png "MAXREFDES117# Firmware Flowchart"
  45. *
  46. */
  47. #include "stm32f103c8t6.h"
  48. #include "mbed.h"
  49. #include "algorithm.h"
  50. #include "MAX30102.h"

  52. #define MAX_BRIGHTNESS 255

  54. uint32_t aun_ir_buffer[500]; //IR LED sensor data
  55. int32_t n_ir_buffer_length;    //data length
  56. uint32_t aun_red_buffer[500];    //Red LED sensor data
  57. int32_t n_sp02; //SPO2 value
  58. int8_t ch_spo2_valid;   //indicator to show if the SP02 calculation is valid
  59. int32_t n_heart_rate;   //heart rate value
  60. int8_t  ch_hr_valid;    //indicator to show if the heart rate calculation is valid
  61. uint8_t uch_dummy;

  63. Serial pc(SERIAL_TX, SERIAL_RX);    //initializes the serial port, TX-PA2, RX-PA3

  65. PwmOut pwmled(PB_3);  //initializes the pwm output PB3 that connects to the LED
  66. DigitalIn INT(PB_7);  //pin PB7 connects to the interrupt output pin of the MAX30102
  67. DigitalOut led(PC_13); //PC13 connects to the on board user LED


  70. // the setup routine runs once when you press reset:
  71. int main() {
  72.     uint32_t un_min, un_max, un_prev_data;  //variables to calculate the on-board LED brightness that reflects the heartbeats
  73.     int i;
  74.     int32_t n_brightness;
  75.     float f_temp;

  77.     maxim_max30102_reset(); //resets the MAX30102
  78.     // initialize serial communication at 115200 bits per second:
  79.     pc.baud(115200);
  80.     pc.format(8,SerialBase::None,1);
  81.     wait(1);

  83.     //read and clear status register
  84.     maxim_max30102_read_reg(0,&uch_dummy);

  86.     //wait until the user presses a key
  87. //    while(pc.readable()==0)
  88. //    {
  89. //        pc.printf("\x1B[2J");  //clear terminal program screen
  90. //        pc.printf("Press any key to start conversion\n\r");
  91. //        wait(1);
  92. //    }
  93. //    uch_dummy=getchar();

  95.     maxim_max30102_init();  //initializes the MAX30102


  98.     n_brightness=0;
  99.     un_min=0x3FFFF;
  100.     un_max=0;

  102.     n_ir_buffer_length=500; //buffer length of 100 stores 5 seconds of samples running at 100sps

  104.     //read the first 500 samples, and determine the signal range
  105.     for(i=0;i<n_ir_buffer_length;i++)
  106.     {
  107.         while(INT.read()==1);   //wait until the interrupt pin asserts

  109.         maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));  //read from MAX30102 FIFO

  111.         if(un_min>aun_red_buffer[i])
  112.             un_min=aun_red_buffer[i];    //update signal min
  113.         if(un_max<aun_red_buffer[i])
  114.             un_max=aun_red_buffer[i];    //update signal max
  115.         pc.printf("red=");
  116.         pc.printf("%i", aun_red_buffer[i]);
  117.         pc.printf(", ir=");
  118.         pc.printf("%i\n\r", aun_ir_buffer[i]);
  119.     }
  120.     un_prev_data=aun_red_buffer[i];


  123.     //calculate heart rate and SpO2 after first 500 samples (first 5 seconds of samples)
  124.     maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid);

  126.     //Continuously taking samples from MAX30102.  Heart rate and SpO2 are calculated every 1 second
  127.     while(1)
  128.     {
  129.         i=0;
  130.         un_min=0x3FFFF;
  131.         un_max=0;

  133.         //dumping the first 100 sets of samples in the memory and shift the last 400 sets of samples to the top
  134.         for(i=100;i<500;i++)
  135.         {
  136.             aun_red_buffer[i-100]=aun_red_buffer[i];
  137.             aun_ir_buffer[i-100]=aun_ir_buffer[i];

  139.             //update the signal min and max
  140.             if(un_min>aun_red_buffer[i])
  141.             un_min=aun_red_buffer[i];
  142.             if(un_max<aun_red_buffer[i])
  143.             un_max=aun_red_buffer[i];
  144.         }

  146.         //take 100 sets of samples before calculating the heart rate.
  147.         for(i=400;i<500;i++)
  148.         {
  149.             un_prev_data=aun_red_buffer[i-1];
  150.             while(INT.read()==1);
  151.             maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));

  153.             if(aun_red_buffer[i]>un_prev_data)//just to determine the brightness of LED according to the deviation of adjacent two AD data
  154.             {
  155.                 f_temp=aun_red_buffer[i]-un_prev_data;
  156.                 f_temp/=(un_max-un_min);
  157.                 f_temp*=MAX_BRIGHTNESS;
  158.                 n_brightness-=(int)f_temp;
  159.                 if(n_brightness<0)
  160.                     n_brightness=0;
  161.             }
  162.             else
  163.             {
  164.                 f_temp=un_prev_data-aun_red_buffer[i];
  165.                 f_temp/=(un_max-un_min);
  166.                 f_temp*=MAX_BRIGHTNESS;
  167.                 n_brightness+=(int)f_temp;
  168.                 if(n_brightness>MAX_BRIGHTNESS)
  169.                     n_brightness=MAX_BRIGHTNESS;
  170.             }

  172.             pwmled.write(1-(float)n_brightness/256);//pwm control led brightness
  173.                                                 if(n_brightness<120)
  174.                                                         led=1;
  175.                                                 else
  176.                                                         led=0;

  178.             //send samples and calculation result to terminal program through UART
  179.             pc.printf("red=");
  180.             pc.printf("%i", aun_red_buffer[i]);
  181.             pc.printf(", ir=");
  182.             pc.printf("%i", aun_ir_buffer[i]);
  183.             pc.printf(", HR=%i, ", n_heart_rate);
  184.             pc.printf("HRvalid=%i, ", ch_hr_valid);
  185.             pc.printf("SpO2=%i, ", n_sp02);
  186.             pc.printf("SPO2Valid=%i\n\r", ch_spo2_valid);
  187.         }
  188.         maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid);
  189.     }
  190. }
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ID:750420 发表于 2021-2-26 17:09 | 显示全部楼层
zhangxiaozi 发表于 2020-7-3 10:35
HR=-999, HRvalid=0, SpO2=-999, SPO2Valid=0
HR=-999, HRvalid=0, SpO2=-999, SPO2Valid=0
HR=-999, HRv ...

我的也有点问题
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ID:378659 发表于 2021-3-8 16:26 | 显示全部楼层
这的算法滤波不稳定，心率乱跳
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ID:885188 发表于 2021-3-11 17:38 | 显示全部楼层
没看懂呢?
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