from machine import Pin, SoftSPI
import time

def ID(agreement):
    #txbuf 需要将16进制转换为10进制
    
    rxbuf = bytearray(3)      # create a buffer
    spi = SoftSPI(baudrate=200000, polarity=1, phase=0, mosi=Pin(16), miso=Pin(4), sck=Pin(2))
    spi.init(baudrate=125000) # set the baudrate
    CS = Pin(17, Pin.OUT)    # create output pin on GPIO16
    CS.value(1)             # set pin to on/high
    time.sleep(1)
    CS.value(0)             # set pin to on/high
    txbuf =bytearray([16,0,0])
    spi.write_readinto(txbuf, rxbuf) # write to MOSI and read from MISO into the buffer
    CS.value(1)             # set pin to on/high
    return rxbuf
#采集P=AIN0 N=AIN1时候的电压
def GetADCValue(agreement):
    #Rxbuffs = bytearray(3)      # create a buffer
    spi = SoftSPI(baudrate=200000, polarity=1, phase=0, mosi=Pin(16), miso=Pin(4), sck=Pin(2))
    spi.init(baudrate=125000) # set the baudrate
    CS = Pin(17, Pin.OUT)    # create output pin on GPIO16
    CS.value(1)             # set pin to on/high
    time.sleep(1)
    CS.value(0)             # set pin to on/high
    #第4位设置电压采样输入p和n
    txbuf =bytearray([15,81,0,1,252,0,1])
    spi.write(txbuf)
    txbuf =bytearray([0,0,0])
    #读取三个字节
    rxbuf=spi.read(3,0)
    CS.value(1)             # set pin to on/high
    return rxbuf

 逻辑分析仪波形

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