HY4145鋰電池電量監控晶片

電路圖

程式列表

Python - ePy-Lite_HY4145.py

"""

ePy-Lite_HY4145.py

ePy_Lite HY4145

------------

3V3 VCC

P19 SCL

P20 SDA

GND GND

"""

from micropython import const

from machine import I2C, Pin

from machine import Switch #獲取按鍵KEY庫

import utime

i2c_0 = None

addrHY4145 = const(0x55) # HY4145 Device ID address for slave target

temp = []

Volt = None

# Standard Commands

Control = const(0x00)

Temperature = const(0x06)

Voltage = const(0x08)

Flags = const(0x0A)

NominalAvailableCapacity = const(0x0C)

FullAvailableCapacity = const(0x0E)

RemainingCapacity = const(0x10)

FullChargeCapacity = const(0x12)

AverageCurrent = const(0x14)

InternalTemperature = const(0x28)

CycleCount = const(0x2A)

RelativeStateOfCharge = const(0x2C)

StateOfHealth = const(0x2E)

Current = const(0x30)

SafetyStatus = const(0x32)

PassedCharge = const(0x34)

def StdReadData(cmd): # HY4145 Read

buff=bytearray(2)

# temp.clear()

# temp.append(cmd)

i2c_0.send(cmd,addrHY4145) #i2c_error: i2c write fail!input buffer length is not correct !

i2c_0.recv(buff,addrHY4145) #讀取2個位元組

retval = (int(buff[1]) << 8) | buff[0]

return retval

# Start Function

if __name__=="__main__":

# Declaration I2C

i2c_0 = I2C(0,I2C.MASTER,baudrate=100000) #創建頻率為100kHz的I2C外設,選擇要使用的外設I2C 0

KeyA = Switch('keya') #創建按鍵A

utime.sleep_ms(2000)

try:

while True:

Volt=StdReadData(Voltage)

Amp=StdReadData(Current)

Temp=StdReadData(Temperature)

FCC=StdReadData(FullChargeCapacity)

RM=StdReadData(RemainingCapacity)

RSOC=StdReadData(RelativeStateOfCharge)

print("Voltage is %dmV." % (Volt))

print("Current is %dmA." % (Amp))

print("Temperature is %.1f'C." % (Temp/10-273.0))

print("FullChargeCapacity is %dmAh." % (FCC))

print("RemainingCapacity is %dmAh." % (RM))

print("RelativeStateOfCharge is %d%%." % (RSOC))

if (KeyA.value()) == True: #如果按鍵A被按下

break

utime.sleep(1)

finally:

pass

i2c_0.deinit()

KeyA.deinit()

執行結果