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axp202.py
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axp202.py
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'''
MIT License
Copyright (c) 2019 lewis he
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
axp20x.py - MicroPython library for X-Power AXP202 chip.
Created by Lewis he on June 24, 2019.
github:https://github.com/lewisxhe/AXP202X_Libraries
'''
import gc
from machine import Pin, I2C
import micropython
from ustruct import unpack
from constants import *
default_pin_scl = 22
default_pin_sda = 21
default_pin_intr = 35
default_chip_type = AXP202_CHIP_ID
class PMU(object):
def __init__(self, scl=None, sda=None,
intr=None, address=None):
self.device = None
self.scl = scl if scl is not None else default_pin_scl
self.sda = sda if sda is not None else default_pin_sda
self.intr = intr if intr is not None else default_pin_intr
self.chip = default_chip_type
self.address = address if address else AXP202_SLAVE_ADDRESS
self.buffer = bytearray(16)
self.bytebuf = memoryview(self.buffer[0:1])
self.wordbuf = memoryview(self.buffer[0:2])
self.irqbuf = memoryview(self.buffer[0:5])
self.init_pins()
self.init_i2c()
self.init_device()
def init_i2c(self):
print('* initializing i2c')
self.bus = I2C(scl=self.pin_scl,
sda=self.pin_sda)
def init_pins(self):
print('* initializing pins')
self.pin_sda = Pin(self.sda)
self.pin_scl = Pin(self.scl)
self.pin_intr = Pin(self.intr, mode=Pin.IN)
def write_byte(self, reg, val):
self.bytebuf[0] = val
self.bus.writeto_mem(self.address, reg, self.bytebuf)
def read_byte(self, reg):
self.bus.readfrom_mem_into(self.address, reg, self.bytebuf)
return self.bytebuf[0]
def read_word(self, reg):
self.bus.readfrom_mem_into(self.address, reg, self.wordbuf)
return unpack('>H', self.wordbuf)[0]
def read_word2(self, reg):
self.bus.readfrom_mem_into(self.address, reg, self.wordbuf)
return unpack('>h', self.wordbuf)[0]
def init_device(self):
print('* initializing mpu')
self.chip = self.read_byte(AXP202_IC_TYPE)
if(self.chip == AXP202_CHIP_ID):
self.chip = AXP202_CHIP_ID
print("Detect PMU Type is AXP202")
elif(self.chip == AXP192_CHIP_ID):
print("Detect PMU Type is AXP192")
self.chip = AXP192_CHIP_ID
else:
raise Exception("Invalid Chip ID!")
def enablePower(self, ch):
data = self.read_byte(AXP202_LDO234_DC23_CTL)
data = data | (1 << ch)
self.write_byte(AXP202_LDO234_DC23_CTL, data)
def disablePower(self, ch):
data = self.read_byte(AXP202_LDO234_DC23_CTL)
data = data & (~(1 << ch))
self.write_byte(AXP202_LDO234_DC23_CTL, data)
def __BIT_MASK(self, mask):
return 1 << mask
def __get_h8_l5(self, regh8, regl5):
hv = self.read_byte(regh8)
lv = self.read_byte(regl5)
return (hv << 5) | (lv & 0x1F)
def __get_h8_l4(self, regh8, regl5):
hv = self.read_byte(regh8)
lv = self.read_byte(regl5)
return (hv << 4) | (lv & 0xF)
def isChargeing(self):
data = self.read_byte(AXP202_MODE_CHGSTATUS)
return data & self.__BIT_MASK(6)
def isBatteryConnect(self):
data = self.read_byte(AXP202_MODE_CHGSTATUS)
return data & self.__BIT_MASK(5)
def getAcinCurrent(self):
data = self.__get_h8_l4(AXP202_ACIN_CUR_H8, AXP202_ACIN_CUR_L4)
return data * AXP202_ACIN_CUR_STEP
def getAcinVoltage(self):
data = self.__get_h8_l4(AXP202_ACIN_VOL_H8, AXP202_ACIN_VOL_L4)
return data * AXP202_ACIN_VOLTAGE_STEP
def getVbusVoltage(self):
data = self.__get_h8_l4(AXP202_VBUS_VOL_H8, AXP202_VBUS_VOL_L4)
return data * AXP202_VBUS_VOLTAGE_STEP
def getVbusCurrent(self):
data = self.__get_h8_l4(AXP202_VBUS_CUR_H8, AXP202_VBUS_CUR_L4)
return data * AXP202_VBUS_CUR_STEP
def getTemp(self):
hv = self.read_byte(AXP202_INTERNAL_TEMP_H8)
lv = self.read_byte(AXP202_INTERNAL_TEMP_L4)
data = (hv << 8) | (lv & 0xF)
return data / 1000
def getTSTemp(self):
data = self.__get_h8_l4(AXP202_TS_IN_H8, AXP202_TS_IN_L4)
return data * AXP202_TS_PIN_OUT_STEP
def getGPIO0Voltage(self):
data = self.__get_h8_l4(AXP202_GPIO0_VOL_ADC_H8,
AXP202_GPIO0_VOL_ADC_L4)
return data * AXP202_GPIO0_STEP
def getGPIO1Voltage(self):
data = self.__get_h8_l4(AXP202_GPIO1_VOL_ADC_H8,
AXP202_GPIO1_VOL_ADC_L4)
return data * AXP202_GPIO1_STEP
def getBattInpower(self):
h8 = self.read_byte(AXP202_BAT_POWERH8)
m8 = self.read_byte(AXP202_BAT_POWERM8)
l8 = self.read_byte(AXP202_BAT_POWERL8)
data = (h8 << 16) | (m8 << 8) | l8
return 2 * data * 1.1 * 0.5 / 1000
def getBattVoltage(self):
data = self.__get_h8_l4(AXP202_BAT_AVERVOL_H8, AXP202_BAT_AVERVOL_L4)
return data * AXP202_BATT_VOLTAGE_STEP
def getBattChargeCurrent(self):
data = 0
if(self.chip == AXP202_CHIP_ID):
data = self.__get_h8_l4(
AXP202_BAT_AVERCHGCUR_H8, AXP202_BAT_AVERCHGCUR_L4) * AXP202_BATT_CHARGE_CUR_STEP
elif (self.chip == AXP192_CHIP_ID):
data = self.__get_h8_l5(
AXP202_BAT_AVERCHGCUR_H8, AXP202_BAT_AVERCHGCUR_L4) * AXP202_BATT_CHARGE_CUR_STEP
return data
def getBattDischargeCurrent(self):
data = self.__get_h8_l4(
AXP202_BAT_AVERDISCHGCUR_H8, AXP202_BAT_AVERDISCHGCUR_L5) * AXP202_BATT_DISCHARGE_CUR_STEP
return data
def getSysIPSOUTVoltage(self):
hv = self.read_byte(AXP202_APS_AVERVOL_H8)
lv = self.read_byte(AXP202_APS_AVERVOL_L4)
data = (hv << 4) | (lv & 0xF)
return data
def enableADC(self, ch, val):
if(ch == 1):
data = self.read_byte(AXP202_ADC_EN1)
data = data | (1 << val)
self.write_byte(AXP202_ADC_EN1, data)
elif(ch == 2):
data = self.read_byte(AXP202_ADC_EN2)
data = data | (1 << val)
self.write_byte(AXP202_ADC_EN1, data)
else:
return
def disableADC(self, ch, val):
if(ch == 1):
data = self.read_byte(AXP202_ADC_EN1)
data = data & (~(1 << val))
self.write_byte(AXP202_ADC_EN1, data)
elif(ch == 2):
data = self.read_byte(AXP202_ADC_EN2)
data = data & (~(1 << val))
self.write_byte(AXP202_ADC_EN1, data)
else:
return
def enableIRQ(self, val):
if(val & 0xFF):
data = self.read_byte(AXP202_INTEN1)
data = data | (val & 0xFF)
self.write_byte(AXP202_INTEN1, data)
if(val & 0xFF00):
data = self.read_byte(AXP202_INTEN2)
data = data | (val >> 8)
self.write_byte(AXP202_INTEN2, data)
if(val & 0xFF0000):
data = self.read_byte(AXP202_INTEN3)
data = data | (val >> 16)
self.write_byte(AXP202_INTEN3, data)
if(val & 0xFF000000):
data = self.read_byte(AXP202_INTEN4)
data = data | (val >> 24)
self.write_byte(AXP202_INTEN4, data)
def disableIRQ(self, val):
if(val & 0xFF):
data = self.read_byte(AXP202_INTEN1)
data = data & (~(val & 0xFF))
self.write_byte(AXP202_INTEN1, data)
if(val & 0xFF00):
data = self.read_byte(AXP202_INTEN2)
data = data & (~(val >> 8))
self.write_byte(AXP202_INTEN2, data)
if(val & 0xFF0000):
data = self.read_byte(AXP202_INTEN3)
data = data & (~(val >> 16))
self.write_byte(AXP202_INTEN3, data)
if(val & 0xFF000000):
data = self.read_byte(AXP202_INTEN4)
data = data & (~(val >> 24))
self.write_byte(AXP202_INTEN4, data)
pass
def readIRQ(self):
if(self.chip == AXP202_CHIP_ID):
for i in range(5):
self.irqbuf[i] = self.read_byte(AXP202_INTSTS1 + i)
elif(self.chip == AXP192_CHIP_ID):
for i in range(4):
self.irqbuf[i] = self.read_byte(AXP192_INTSTS1 + i)
self.irqbuf[4] = self.read_byte(AXP192_INTSTS5)
def clearIRQ(self):
if(self.chip == AXP202_CHIP_ID):
for i in range(5):
self.write_byte(AXP202_INTSTS1 + i, 0xFF)
self.irqbuf[i] = 0
elif(self.chip == AXP192_CHIP_ID):
for i in range(4):
self.write_byte(AXP192_INTSTS1 + i, 0xFF)
self.write_byte(AXP192_INTSTS5, 0xFF)
def isVBUSPlug(self):
data = self.read_byte(AXP202_STATUS)
return data & self.__BIT_MASK(5)
# Only can set axp192
def setDC1Voltage(self, mv):
if(self.chip != AXP192_CHIP_ID):
return
if(mv < 700):
mv = 700
elif(mv > 3500):
mv = 3500
val = (mv - 700) / 25
self.write_byte(AXP192_DC1_VLOTAGE, int(val))
def setDC2Voltage(self, mv):
if(mv < 700):
mv = 700
elif(mv > 2275):
mv = 2275
val = (mv - 700) / 25
self.write_byte(AXP202_DC2OUT_VOL, int(val))
def setDC3Voltage(self, mv):
if(mv < 700):
mv = 700
elif(mv > 3500):
mv = 3500
val = (mv - 700) / 25
self.write_byte(AXP202_DC3OUT_VOL, int(val))
def setLDO2Voltage(self, mv):
if(mv < 1800):
mv = 1800
elif(mv > 3300):
mv = 3300
val = (mv - 1800) / 100
prev = self.read_byte(AXP202_LDO24OUT_VOL)
prev &= 0x0F
prev = prev | (int(val) << 4)
self.write_byte(AXP202_LDO24OUT_VOL, int(prev))
def setLDO3Voltage(self, mv):
if self.chip == AXP202_CHIP_ID and mv < 700:
mv = 700
elif self.chip == AXP192_CHIP_ID and mv < 1800:
mv = 1800
if self.chip == AXP202_CHIP_ID and mv > 3500:
mv = 3500
elif self.chip == AXP192_CHIP_ID and mv > 3300:
mv = 3300
if self.chip == AXP202_CHIP_ID:
val = (mv - 700) / 25
prev = self.read_byte(AXP202_LDO3OUT_VOL)
prev &= 0x80
prev = prev | int(val)
self.write_byte(AXP202_LDO3OUT_VOL, int(prev))
# self.write_byte(AXP202_LDO3OUT_VOL, int(val))
elif self.chip == AXP192_CHIP_ID:
val = (mv - 1800) / 100
prev = self.read_byte(AXP192_LDO23OUT_VOL)
prev &= 0xF0
prev = prev | int(val)
self.write_byte(AXP192_LDO23OUT_VOL, int(prev))
def setLDO4Voltage(self, arg):
if self.chip == AXP202_CHIP_ID and arg <= AXP202_LDO4_3300MV:
data = self.read_byte(AXP202_LDO24OUT_VOL)
data = data & 0xF0
data = data | arg
self.write_byte(AXP202_LDO24OUT_VOL, data)
def setLDO3Mode(self, mode):
if(mode > AXP202_LDO3_DCIN_MODE):
return
data = self.read_byte(AXP202_LDO3OUT_VOL)
if(mode):
data = data | self.__BIT_MASK(7)
else:
data = data & (~self.__BIT_MASK(7))
self.write_byte(AXP202_LDO3OUT_VOL, data)
def setStartupTime(self, val):
startupParams = (
0b00000000,
0b01000000,
0b10000000,
0b11000000)
if(val > AXP202_STARTUP_TIME_2S):
return
data = self.read_byte(AXP202_POK_SET)
data = data & (~startupParams[3])
data = data | startupParams[val]
self.write_byte(AXP202_POK_SET, data)
def setlongPressTime(self, val):
longPressParams = (
0b00000000,
0b00010000,
0b00100000,
0b00110000)
if(val > AXP202_LONGPRESS_TIME_2S5):
return
data = self.read_byte(AXP202_POK_SET)
data = data & (~longPressParams[3])
data = data | longPressParams[val]
self.write_byte(AXP202_POK_SET, data)
def setShutdownTime(self, val):
shutdownParams = (
0b00000000,
0b00000001,
0b00000010,
0b00000011)
if(val > AXP202_SHUTDOWN_TIME_10S):
return
data = self.read_byte(AXP202_POK_SET)
data = data & (~shutdownParams[3])
data = data | shutdownParams[val]
self.write_byte(AXP202_POK_SET, data)
def setTimeOutShutdown(self, en):
data = self.read_byte(AXP202_POK_SET)
if(en):
data = data | self.__BIT_MASK(3)
else:
data = data | (~self.__BIT_MASK(3))
self.write_byte(AXP202_POK_SET, data)
def shutdown(self):
data = self.read_byte(AXP202_OFF_CTL)
data = data | self.__BIT_MASK(7)
self.write_byte(AXP202_OFF_CTL, data)
def getSettingChargeCurrent(self):
data = self.read_byte(AXP202_CHARGE1)
data = data & 0b00000111
curr = 300 + data * 100
return curr
def isChargeingEnable(self):
data = self.read_byte(AXP202_CHARGE1)
if(data & self.__BIT_MASK(7)):
return True
return False
def enableChargeing(self):
data = self.read_byte(AXP202_CHARGE1)
data = data | self.__BIT_MASK(7)
self.write_byte(AXP202_CHARGE1, data)
def setChargingTargetVoltage(self, val):
targetVolParams = (
0b00000000,
0b00100000,
0b01000000,
0b01100000)
if(val > AXP202_TARGET_VOL_4_36V):
return
data = self.read_byte(AXP202_CHARGE1)
data = data & (~targetVolParams[3])
data = data | targetVolParams[val]
self.write_byte(AXP202_CHARGE1, data)
def getBattPercentage(self):
data = self.read_byte(AXP202_BATT_PERCENTAGE)
mask = data & self.__BIT_MASK(7)
if(mask):
return 0
return data & (~self.__BIT_MASK(7))
def setChgLEDChgControl(self):
data = self.read_byte(AXP202_OFF_CTL)
data = data & 0b111110111
self.write_byte(AXP202_OFF_CTL, data)
def setChgLEDMode(self, mode):
data = self.read_byte(AXP202_OFF_CTL)
data |= self.__BIT_MASK(3)
if(mode == AXP20X_LED_OFF):
data = data & 0b11001111
elif(mode == AXP20X_LED_BLINK_1HZ):
data = data & 0b11001111
data = data | 0b00010000
elif(mode == AXP20X_LED_BLINK_4HZ):
data = data & 0b11001111
data = data | 0b00100000
elif(mode == AXP20X_LED_LOW_LEVEL):
data = data & 0b11001111
data = data | 0b00110000
self.write_byte(AXP202_OFF_CTL, data)