STM32F103ZET6驱动心电传感器
这个项目是正点原子精英版驱动max30102传感器，画出心电图。
使用i2c驱动
引脚接线：
PA5--->INT
PB6--->SDA
PB7--->CLS
VIN---->3.3V
GND--->GND
#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "lcd.h"
#include "usart.h"
#include "myiic.h"
#include "max30102.h"
#include "algorithm.h"/************************************************ALIENTEK精英STM32开发板实验22IIC 实验 技术支持：www.openedv.com淘宝店铺：http://eboard.taobao.com 关注微信公众平台微信号："正点原子"，免费获取STM32资料。广州市星翼电子科技有限公司 作者：正点原子 @ALIENTEK
************************************************/#define MAX_BRIGHTNESS 255
#define START 100
#define DATA_LENGTH 500uint32_t aun_ir_buffer[DATA_LENGTH]; //IR LED sensor data
int32_t n_ir_buffer_length; //data length
uint32_t aun_red_buffer[DATA_LENGTH]; //Red LED sensor data
int32_t n_sp02; //SPO2 value
int8_t ch_spo2_valid; //indicator to show if the SP02 calculation is valid
int32_t n_heart_rate; //heart rate value
int8_t ch_hr_valid; //indicator to show if the heart rate calculation is valid
uint8_t uch_dummy;int main(void){ uint32_t un_min, un_max, un_prev_data; //变量来计算反映心跳的板载LED亮度 variables to calculate the on-board LED brightness that reflects the heartbeatsuint32_t x_d[2]; int out_number=0;int i,x=0;int32_t n_brightness;float f_temp;delay_init(); //延时函数初始化 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置中断优先级分组为组2：2位抢占优先级，2位响应优先级uart_init(115200); //串口初始化为115200LED_Init(); //初始化与LED连接的硬件接口LCD_Init(); //初始化LCD IIC_Init();maxim_max30102_reset();maxim_max30102_read_reg(0,&uch_dummy);maxim_max30102_init(); LCD_Clear(BLACK);BACK_COLOR=BLACK;POINT_COLOR=BLUE;//设置字体为蓝色 n_brightness=0;un_min=0x3FFFF;un_max=0;n_ir_buffer_length=DATA_LENGTH;//读取前500个样本，并确定信号范围 for(i=0;iaun_red_buffer[i])un_min=aun_red_buffer[i]; //更新最小值if(un_maxaun_red_buffer[i])un_min=aun_red_buffer[i];if(un_maxun_prev_data){f_temp=aun_red_buffer[i]-un_prev_data;f_temp/=(un_max-un_min);f_temp*=MAX_BRIGHTNESS;n_brightness-=(int)f_temp;if(n_brightness<0)n_brightness=0;}else{f_temp=un_prev_data-aun_red_buffer[i];f_temp/=(un_max-un_min);f_temp*=MAX_BRIGHTNESS;n_brightness+=(int)f_temp;if(n_brightness>MAX_BRIGHTNESS)n_brightness=MAX_BRIGHTNESS;}
// printf("red=%i,", aun_red_buffer[i]);
// printf(" ir=%i,", aun_ir_buffer[i]);}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); printf(" HR=%i,", n_heart_rate); printf(" HRvalid=%i,", ch_hr_valid);printf(" SpO2=%i,", n_sp02);printf(" SPO2Valid=%i\r\n", ch_spo2_valid);if(ch_hr_valid){x_d[0]=x_d[1];x_d[1]=n_heart_rate*2;LCD_ShowxNum(100, 100, n_heart_rate, 3, 16, 0); }else{x_d[0]=x_d[1];x_d[1]=50;}LCD_DrawLine(x_d[0],x,x_d[1],x+3);x+=3;if(x>320){LCD_Clear(BLACK);x=0;delay_ms(250);}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); }
}
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链接：https://pan.baidu.com/s/1g_RXgeFwhAYrnfCex9b8ow?pwd=krvd
提取码：krvd
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