max30102python代码

以下是使用Python控制MAX30102传感器的示例代码：

import smbus2
import time
 
# MAX30102 I2C address
MAX30102_ADDRESS = 0x57
 
# MAX30102 register addresses
MAX30102_REG_INTERRUPT_STATUS_1 = 0x00
MAX30102_REG_INTERRUPT_STATUS_2 = 0x01
MAX30102_REG_FIFO_WRITE_POINTER = 0x02
MAX30102_REG_FIFO_OVERFLOW_COUNTER = 0x03
MAX30102_REG_FIFO_READ_POINTER = 0x04
MAX30102_REG_FIFO_DATA = 0x05
MAX30102_REG_MODE_CONFIG = 0x06
MAX30102_REG_SPO2_CONFIG = 0x07
MAX30102_REG_LED1_PA = 0x09
MAX30102_REG_LED2_PA = 0x0A
MAX30102_REG_MULTI_LED_CTRL1 = 0x11
MAX30102_REG_MULTI_LED_CTRL2 = 0x12
MAX30102_REG_TEMP_INTEGER = 0x1F
MAX30102_REG_TEMP_FRACTION = 0x20
MAX30102_REG_REVISION_ID = 0xFE
MAX30102_REG_PART_ID = 0xFF
 
# MAX30102 mode configuration settings
MAX30102_MODE_HR_ONLY = 0x02
MAX30102_MODE_SPO2_ONLY = 0x03
MAX30102_MODE_MULTI_LED = 0x07
 
# MAX30102 sample rate configuration settings
MAX30102_SAMPLING_RATE_50 = 0x00
MAX30102_SAMPLING_RATE_100 = 0x01
MAX30102_SAMPLING_RATE_200 = 0x02
MAX30102_SAMPLING_RATE_400 = 0x03
MAX30102_SAMPLING_RATE_800 = 0x04
MAX30102_SAMPLING_RATE_1000 = 0x05
MAX30102_SAMPLING_RATE_1600 = 0x06
MAX30102_SAMPLING_RATE_3200 = 0x07
 
# MAX30102 LED pulse amplitude configuration settings
MAX30102_LED_PA_0 = 0x00
MAX30102_LED_PA_1 = 0x01
MAX30102_LED_PA_2 = 0x02
MAX30102_LED_PA_3 = 0x03
MAX30102_LED_PA_4 = 0x04
MAX30102_LED_PA_5 = 0x05
MAX30102_LED_PA_6 = 0x06
MAX30102_LED_PA_7 = 0x07
MAX30102_LED_PA_8 = 0x08
MAX30102_LED_PA_9 = 0x09
MAX30102_LED_PA_10 = 0x0A
MAX30102_LED_PA_11 = 0x0B
MAX30102_LED_PA_12 = 0x0C
MAX30102_LED_PA_13 = 0x0D
MAX30102_LED_PA_14 = 0x0E
MAX30102_LED_PA_15 = 0x0F
 
# Initialize I2C bus
bus = smbus2.SMBus(1)
 
# Reset MAX30102
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_MODE_CONFIG, 0x40)
time.sleep(1)
 
# Set sample rate to 100Hz
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_SPO2_CONFIG, MAX30102_SAMPLING_RATE_100)
 
# Set LED pulse amplitude for LED1 and LED2
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_LED1_PA, MAX30102_LED_PA_6)
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_LED2_PA, MAX30102_LED_PA_6)
 
# Set multi-LED mode configuration for LED1 and LED2
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_MULTI_LED_CTRL1, 0x23)
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_MULTI_LED_CTRL2, 0x01)
 
# Set mode to HR only
bus.write_byte_data(MAX30102_ADDRESS, MAX30102_REG_MODE_CONFIG, MAX30102_MODE_HR_ONLY)
 
# Read data from MAX30102
while True:
    # Read FIFO data count
    fifo_data_count = bus.read_byte_data(MAX30102_ADDRESS, MAX30102_REG_FIFO_WRITE_POINTER) - bus.read_byte_data(MAX30102_ADDRESS, MAX30102_REG_FIFO_READ_POINTER)
    if fifo_data_count > 0:
        # Read FIFO data
        fifo_data = bus.read_i2c_block_data(MAX30102_ADDRESS, MAX30102_REG_FIFO_DATA, 6)
        # Print heart rate
        print("Heart rate: ", fifo_data[3])

这是一个基本的读取心率值的示例，你可以根据需要进行修改和扩展。请注意，MAX30102的配置可能因制造商而异，因此在使用此代码之前最好查阅一下设备的数据手册。