diff --git a/docs/en/mpy/mpy_api_list.md b/docs/en/mpy/mpy_api_list.md
new file mode 100644
index 00000000..07ce3d63
--- /dev/null
+++ b/docs/en/mpy/mpy_api_list.md
@@ -0,0 +1,73 @@
+<div class="container uiflow_banner">
+    <div>
+      <img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/m5-docs_homepage/home_page/mpy_homepage.webp">
+    </div>
+    <div style="margin-top:30px">
+      <h1 class="jumbotron-heading">UIFlow MicroPython API</h1>
+      <p class="lead text-muted">API List</p>
+    </div>
+</div>
+
+
+<div id='arduino_home_page' v-cloak>
+  <el-card class="box-card" v-for="(item,index) in list" :key="index" style="margin-bottom:20px" :id="item.id">
+    <div slot="header" class="clearfix">
+      <span>{{item.title}}</span>
+      <i class="el-icon-s-management" style="float: right;"></i>
+    </div>
+    <div v-for="(href,name) in item.item" :key="name" style="margin: 0px 10px 10px 0px ;display:inline-block;">
+      <a :href='href'><el-tag>{{name}}</el-tag></a>
+    </div>
+  </el-card>
+</div>
+
+
+<script>
+
+const quickstart = {
+  'title':"快速上手/固件烧录",
+  'item':{
+    'BASIC / M5GO / FIRE / FACES':'#/en/arduino/arduino_development',
+    'M5StickC':'#/en/arduino/arduino_development',
+    'M5Stick':'#/en/arduino/arduino_development',
+    'ATOM Lite / Matrix':'#/en/arduino/arduino_development',
+    'M5Core2':'#/en/arduino/arduino_core2_development'
+  },
+  "id":"quickstart"
+};
+
+const unit = {
+  'title':"Unit I2C Class",
+  'item':{
+    'Ultrasonic':'#/en/mpy/unit?id=ultrasonic',
+    'Heart':'#/en/mpy/unit?id=heart',
+    'ENV/ENV II':'#/en/mpy/unit?id=envenv-ii',
+    'ADC':'#/en/mpy/unit?id=adc',
+    'ACCEL':'#/en/mpy/unit?id=accel',
+    'DAC':'#/en/mpy/unit?id=dac',
+    'NCIR':'#/en/mpy/unit?id=ncir',
+    'Joystick':'#/en/mpy/unit?id=joystick',
+    'ToF':'#/en/mpy/unit?id=tof',
+    'COLOR':'#/en/mpy/unit?id=color',
+    'EXT.IO':'#/en/mpy/unit?id=extio',
+    'RFID':'#/en/mpy/unit?id=rfid',
+    'EXT.IO':'#/en/mpy/unit?id=extio',
+    'CardKB':'#/en/mpy/unit?id=cardkb',
+    'Tracker':'#/en/mpy/unit?id=track',
+    'Makey':'#/en/mpy/unit?id=makey'
+  },
+  "id":"unit_api"
+};
+
+var arduino_home_page = new Vue({
+    el:'#arduino_home_page',
+    data() {
+      return {
+        list: {
+            quickstart: quickstart,
+            unit: unit
+          }
+      };
+    }
+})
+</script>
\ No newline at end of file
diff --git a/docs/en/mpy/unit.md b/docs/en/mpy/unit.md
new file mode 100644
index 00000000..ff08dc04
--- /dev/null
+++ b/docs/en/mpy/unit.md
@@ -0,0 +1,579 @@
+# unit
+
+>unit module contains the hardware drivers of the M5Stack-Unit series peripheral products.
+
+## Add Unit
+
+- **Syntax**
+
+```python
+def get(unit, port, *arg)
+```
+
+- import
+
+```python
+unit.get(unit.JOYSTICK, unit.PORTA)
+```
+
+- deinit
+
+```python
+unit.deinit()
+```
+
+## I2C
+
+### Ultrasonic
+
+- [Product Deteil](zh_CN/unit/sonic)
+
+- Chip: **RCWL-9600**
+
+- Addr: **0x57**
+
+```python
+
+Ultrasonic0 = unit.get(unit.ULTRASONIC, unit.PORTA)
+
+#Read ranging information
+distance = Ultrasonic0.distance
+```
+
+### Heart
+
+- [Product Deteil](zh_CN/unit/heart)
+
+- Chip: **RCWL-9600**
+
+- Addr: **0x57**
+
+```python
+
+heart0 = unit.get(unit.HEART, unit.PORTA)
+
+# Set the sensor working mode 0x02 is the heart rate mode | 0x03 is the heart rate blood oxygen mode
+heart0.setMode(mode)
+
+#Adjust the sensor LED current, RED is the LED current for blood oxygen test, and IR is the LED current for heart rate test.
+heart0.setLedCurrent(red, ir)
+
+#Read heart rate
+HeartRate = heart0.getHeartRate()
+
+#Read SpO2
+SpO2 = heart0.getSpO2()
+
+```
+
+### ENV/ENV II
+
+- [Product Deteil](zh_CN/unit/env)
+
+- ENV
+- Chip: **dht12**, **bmp280**
+- Addr: **0x5c**, **0x76**
+
+-----------------------
+
+- ENV II
+- Chip: **sht30**, **bmp280**
+- Addr: **0x44**, **0x76**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_env = unit.get(unit.ENV, unit.PORTA)
+
+# temperature: -20 ~ 60, Celsius
+tmp = unit_env.temperature
+# humidity: 20 ~ 95, percentage
+hum = unit_env.humidity
+# pressure: 30000 ~ 110000Pa, pa
+pre = unit_env.pressure
+```
+
+### ADC
+
+- [Product Deteil](zh_CN/unit/adc)
+
+- Chip: **ADS1100**
+
+- Addr: **0x48**
+
+``` python
+# init --- Effective IO: PORTA | PORTC
+unit_adc = unit.get(unit.ADC, unit.PORTA)
+
+# get voltage, value range 0~12, measurement: V
+vol = unit_adc.voltage
+```
+
+### ACCEL
+
+- [Product Deteil](zh_CN/unit/accel)
+
+- Chip: **ADXL345**
+
+- Addr: **0x53**
+
+```python
+adc0 = unit.get(unit.ADC, unit.PORTA)
+
+x = accel0.acceleration[0]
+y = accel0.acceleration[1]
+z = accel0.acceleration[2]
+```
+
+### DAC
+
+- [Product Deteil](zh_CN/unit/dac)
+
+- Chip: **ADS1100**
+
+- Addr: **0x48**
+
+```python
+# init --- Effective IO: PORTA
+unit_dac = unit.get(unit.DAC, unit.PORTA)
+
+# data: 0~4096, maybe 2640 output is 3.3V, max is 3.7V
+# save: True or False, whether to save to eeprom 
+unit_dac.writeData(data, save=False)
+# vol: 0~3.3
+# save: True or False, whether to save to eeprom 
+unit_dac.setVoltage(vol, save=False)
+```
+
+### NCIR
+
+- [Product Deteil](zh_CN/unit/ncir)
+
+- Chip: **MLX90614**
+
+- Addr: **0x5a**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_ncir = unit.get(unit.NCIR, unit.PORTA)
+# tmp: -70°C ~ 382.2°C
+tmp = unit_ncir.temperature
+```
+
+### Joystick
+
+- [Product Deteil](zh_CN/unit/joystick) 
+
+- Chip: **ATmega328P**
+
+- Addr: **0x52**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_joystick = unit.get(unit.JOYSTICK, unit.PORTA)
+# X direction value, 0 ~ 255
+x = unit_joystick.X
+#  X invert direction value, 0 ~ 255
+x = unit_joystick.InvertX
+# Y direction value, 0 ~ 255
+y = unit_joystick.Y
+# Y invert direction value, 0 ~ 255
+y = unit_joystick.InvertY
+# if press, return 1, else 0
+press = unit_joystick.Press
+```
+
+### ToF
+
+- [Product Deteil](zh_CN/unit/tof)
+
+- Chip: **VL53L0X**
+
+- Addr: **0x29**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_tof = unit.get(unit.TOF, unit.PORTA)
+# distance: 30 ~ 800(mm), other is invalid
+distance = unit_tof.distance
+```
+
+### Color
+
+- [Product Deteil](zh_CN/unit/color)
+
+- Chip: **TCS3472**
+
+- Addr: **0x29**
+
+``` python
+# init --- Effective IO: PORTB
+unit_color = unit.get(unit.COLOR, unit.PORTA)
+
+# return: tuple, like (3521, 1515, 1147, 865), (clear, red, green, blue)
+raw = unit_color.rawData
+
+# return red value, range 0~255
+red = unit_color.red
+# return green value, range 0~255
+unit_color.green
+# return blue value, range 0~255
+unit_color.blue
+```
+
+### Extend IO
+
+- [Product Deteil](zh_CN/unit/extio)
+
+- Chip: **PCA9554PW**
+
+- Addr: ***0x27***
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_extIO = unit.get(unit.EXT_IO, unit.PORTA)
+# Method
+# mode: unit_extIO.ALL_OUTPUT or unit_extIO.ALL_INPUT
+unit_extIO.setPortMode(mode)
+# pin: 0~7, mode: 1 or 0, 1:output, 0:INPUT
+unit_extIO.setPinMode(pin, mode)
+# state --> 0x00 ~ 0xff, 
+# 0 pin in 0 bit 7 pin in 7 bit
+# singState = (state >> pin) & 0x01
+state = unit_extIO.digitReadPort()
+# pin: 0~7
+# state --> 0: LOW, 1:HIGH
+state = unit_extIO.digitRead(pin)
+# state: 0x00 ~ 0xff
+unit_extIO.digitWritePort(state)
+# pin: 0 ~ 7, value: 0:LOW, 1:HIGH
+unit_extIO.digitWrite(pin, value)
+```
+
+### RFID
+
+- [Product Deteil](zh_CN/unit/rfid)
+
+- Chip: **MFRC522**
+
+- Addr: **0x28**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_rfid = unit.get(unit.RFID, unit.PORTA)
+# if card near return True, else return False
+state = unit_rfid.isCardOn()
+# return card Uid (string), like '73f66c1bf2'
+# if read fail, return ''
+uid = unit_rfid.readUid()
+# block: must (block + 1) % 4 != 0
+# data: string, int, float, will convert to string
+unit_rfid.writeBlock(block, data)
+# return block data (string)
+dataStr = unit_rfid.readBlockStr(block)
+```
+
+### CardKB
+
+- [Product Deteil](zh_CN/unit/cardkb)
+
+- Chip: **ATmega328P**
+
+- Addr: ***0x5F***
+
+```python
+# init --- Effective IO: PORTB
+unit_cardKB = unit.get(unit.CARDKB, unit.PORTA)
+
+# isNewKeyPress() --> if press key return True else False
+  unit_cardKB.isNewKeyPress():
+  # return last press key value at once, type: int  
+  key = unit_cardKB.keyData
+  # return press string, len < 50, press ESC clear, press [X] delete last one
+  keyString = unit_cardKB.keyString
+```
+
+### Tracker
+
+- [Product Deteil](zh_CN/unit/track)
+
+- Chip: **ATmega328P**
+
+- Addr: ***0x5a***
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_track = unit.get(unit.TRACK, unit.PORTA)
+# pos: 1, 2, 3, 4
+# value: 0 ~ 1024
+value = unit_track.getAnalogValue(pos)
+# pos: 1, 2, 3, 4
+# value: 0 ~ 1024
+unit_track.setAnalogValue(pos, value)
+# pos: 1, 2, 3, 4
+# value: 0, 1
+value = unit_track.getDigitalValue(pos)
+```
+
+### Makey
+
+- [Product Deteil](zh_CN/unit/makey)
+
+- Chip: **ATmega328P**
+
+- Addr: **0x51**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_makey = unit.get(unit.MAKEY, unit.PORTA)
+# data:-1, 0 ~ 15
+data = unit_makey.value
+```
+
+---------------------------------------
+
+## IO/ADC/DAC
+
+### PIR
+
+- [Product Deteil](zh_CN/unit/pir)
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_pir = unit.get(unit.PIR, unit.PORTB)
+# return 0 or 1
+state = pir.state
+```
+
+
+### Button
+
+- [Product Deteil](zh_CN/unit/button)
+
+``` python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_btn = unit.get(unit.BUTTON, unit.PORTB)
+
+# Method
+# if set the callback param, it will interrupt callback function
+# or if not set param it will return result(True or False) at once
+unit_btn.wasPressed(callback=None)
+unit_btn.wasReleased(callback=None)
+unit_btn.wasDoublePress(callback=None)
+# holdTime: sec
+unit_btn.pressFor(holdTime=1.0, callback=None):
+
+#example 
+def on_wasPressed():
+  lcd.print('Button was Pressed\n')
+
+def on_wasReleased():
+  lcd.print('Button was Released\n')
+
+def on_pressFor():
+  lcd.print('Button press for 1.2s press hold\n')
+  
+def on_doublePress():
+  lcd.print('Button was double press\n')
+
+unit_btn.wasPressed(on_wasPressed)
+unit_btn.wasReleased(on_wasReleased)
+unit_btn.wasDoublePress(on_doublePress)
+unit_btn.pressFor(1.2, on_pressFor)
+```
+
+### Dual Button
+
+- [Product Deteil](zh_CN/unit/button)
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_dualButton = unit.get(unit.DUAL_BUTTON, unit.PORTB)
+# btnRed, btnRed method like button unit
+btnRed = unit_dualButton.btnRed
+btnRed = unit_dualButton.btnBlue
+```
+
+
+### Relay
+
+- [Product Deteil](zh_CN/unit/relay)
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_relay = unit.get(unit.RELAY, unit.PORTB)
+# select com connect on
+unit_relay.on()
+# select com connect off
+unit_relay.off()
+```
+
+
+### IR
+
+- [Product Deteil](zh_CN/unit/ir)
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_ir = unit.get(unit.IR, unit.PORTB)
+# ir tx 25hz signal with 38khz signal carrier
+unit_ir.txOn()
+# off tx off
+unit_ir.txOff()
+# if receive ir signal return 1 else return 0
+value = unit.rxStatus()
+```
+
+
+### Angle
+
+Analog Device ( [Product Deteil](zh_CN/unit/angle)
+
+``` python
+# init --- Effective IO: PORTB
+unit_angle = unit.get(unit.ANGLE, unit.PORTB)
+
+# get raw value, range 0 ~ 4095
+adValue = unit_angle.readraw()
+
+# get filter value, range 0 ~ 1023
+filterValue = unit_angle.read()
+```
+
+### Light
+
+- [Product Deteil](zh_CN/unit/light)
+
+```python
+# init --- Effective IO: PORTB
+unit_light = unit.get(unit.LIGHT, unit.PORTB)
+# adc value, range 0 ~ 1024
+analogValue = unit_light.analogValue
+# digital value, only 0 or 1, base rotate the knob 
+digitalValue = unit_light.digitalValue
+```
+
+### Earth
+
+- [Product Deteil](zh_CN/unit/light)
+
+```python
+# init --- Effective IO: PORTB
+unit_earth = unit.get(unit.LIGHT, unit.PORTB)
+# adc value, range 0 ~ 1024
+analogValue = unit_earth.analogValue
+# digital value, only 0 or 1, base rotate the knob 
+digitalValue = unit_earth.digitalValue
+```
+
+### Neopixel
+
+- [Product Deteil](zh_CN/unit/neopixel)
+
+- Chip: **SK6812**
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC, number --> 0 ~ 1023
+unit_Neopixel = unit.get(unit.NEOPIXEL, unit.PORTB, number)
+# pos: 1 ~ number
+# color: 0x000000 ~ 0xffffff rgb888
+unit_Neopixel.setColor(pos, color)
+# 0 < posBegin < posEnd < number
+# color: 0x000000 ~ 0xffffff rgb888
+unit_Neopixel.setColor(posBegin, posEnd, color)
+# color: 0x000000 ~ 0xffffff rgb888
+unit_Neopixel.setColorAll(color)
+# brightness: 0~255
+unit_Neopixel.setBrightness(brightness)
+```
+
+### RGB
+
+- [Product Deteil](zh_CN/unit/rgb)
+
+- Chip: **SK6812**
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_Rgb = unit.get(unit.RGB, unit.PORTB)
+# pos: 1 ~ number
+# color: 0x000000 ~ 0xffffff rgb888
+unit_Rgb.setColor(pos, color)
+# 0 < posBegin < posEnd < number
+# color: 0x000000 ~ 0xffffff rgb888
+unit_Rgb.setColor(posBegin, posEnd, color)
+# color: 0x000000 ~ 0xffffff rgb888
+unit_Rgb.setColorAll(color)
+# brightness: 0~255
+unit_Rgb.setBrightness(brightness)
+```
+
+### Weight
+
+- [Product Deteil](zh_CN/unit/Servo)
+
+- Chip: **HX711**
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_weight = unit.get(unit.WEIGHT, unit.PORTA)
+# 0 ~ 16777216 (24bit)
+rawData = unit_weight.rawData
+# get weight
+weight = unit_weight.weight
+# set weight to zero
+unit_weight.zero()
+```
+
+### Servo
+
+- [Product Deteil](zh_CN/unit/Servo)
+
+```python
+# init --- Effective IO: PORTA | PORTB | PORTC
+unit_servo = unit.get(unit.SERVO, unit.PORTA)
+# us: 500 ~ 2500, 50HZ, High level duration
+unit_servo.write_us(us)
+# degrees: 0 ~ 180,  degree
+unit_servo.write_angle(degrees)
+```
+
+---------------------------------------
+
+## UART
+
+
+### Finger
+
+- [Product Deteil](zh_CN/unit/finger)
+
+- Chip: **FPC1020A**
+
+```python
+# init --- Effective IO: PORTA | PORTC
+unit_finger = unit.get(unit.FINGER, unit.PORTC)
+# Method
+# will change if finger state change
+unit_finger.state
+
+# user_id: 0 ~ 255
+# access: 1, 2, 3
+# note: if call this fun, unit_finger.state -> 'Wait add finger'
+# finish: unit_finger.state -> 'Wait add finger'
+# fail: unit_finger.state -> 'Add user fail'
+unit_finger.addUser(user_id, access)
+
+# if read know finger, will callback fingerCb with 2 formal parameter 
+def fingerCb(user_id, access):
+  if user_id == 1 and access == 2:
+    pass
+unit_finger.readFingerCb(callback=fingerCb)
+
+# user_id: 0~255
+# finish: unit_finger.state -> 'Delete user finish'
+# fail: unit_finger.state -> 'Delete user fail'
+unit_finger.removeUser(user_id)
+
+# remove all user data
+unit_finger.removeAllUser()
+```
+
diff --git a/docs/zh_CN/mpy/mpy_api_list.md b/docs/zh_CN/mpy/mpy_api_list.md
new file mode 100644
index 00000000..0c0be9b3
--- /dev/null
+++ b/docs/zh_CN/mpy/mpy_api_list.md
@@ -0,0 +1,73 @@
+<div class="container uiflow_banner">
+    <div>
+      <img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/m5-docs_homepage/home_page/mpy_homepage.webp">
+    </div>
+    <div style="margin-top:30px">
+      <h1 class="jumbotron-heading">UIFlow MicroPython API</h1>
+      <p class="lead text-muted">API List</p>
+    </div>
+</div>
+
+
+<div id='arduino_home_page' v-cloak>
+  <el-card class="box-card" v-for="(item,index) in list" :key="index" style="margin-bottom:20px" :id="item.id">
+    <div slot="header" class="clearfix">
+      <span>{{item.title}}</span>
+      <i class="el-icon-s-management" style="float: right;"></i>
+    </div>
+    <div v-for="(href,name) in item.item" :key="name" style="margin: 0px 10px 10px 0px ;display:inline-block;">
+      <a :href='href'><el-tag>{{name}}</el-tag></a>
+    </div>
+  </el-card>
+</div>
+
+
+<script>
+
+const quickstart = {
+  'title':"快速上手/固件烧录",
+  'item':{
+    'BASIC / M5GO / FIRE / FACES':'#/zh_CN/arduino/arduino_development',
+    'M5StickC':'#/zh_CN/arduino/arduino_development',
+    'M5Stick':'#/zh_CN/arduino/arduino_development',
+    'ATOM Lite / Matrix':'#/zh_CN/arduino/arduino_development',
+    'M5Core2':'#/zh_CN/arduino/arduino_core2_development'
+  },
+  "id":"quickstart"
+};
+
+const unit = {
+  'title':"Unit I2C Class",
+  'item':{
+    'Ultrasonic':'#/zh_CN/mpy/unit?id=ultrasonic',
+    'Heart':'#/zh_CN/mpy/unit?id=heart',
+    'ENV/ENV II':'#/zh_CN/mpy/unit?id=envenv-ii',
+    'ADC':'#/zh_CN/mpy/unit?id=adc',
+    'ACCEL':'#/zh_CN/mpy/unit?id=accel',
+    'DAC':'#/zh_CN/mpy/unit?id=dac',
+    'NCIR':'#/zh_CN/mpy/unit?id=ncir',
+    'Joystick':'#/zh_CN/mpy/unit?id=joystick',
+    'ToF':'#/zh_CN/mpy/unit?id=tof',
+    'COLOR':'#/zh_CN/mpy/unit?id=color',
+    'EXT.IO':'#/zh_CN/mpy/unit?id=extio',
+    'RFID':'#/zh_CN/mpy/unit?id=rfid',
+    'EXT.IO':'#/zh_CN/mpy/unit?id=extio',
+    'CardKB':'#/zh_CN/mpy/unit?id=cardkb',
+    'Tracker':'#/zh_CN/mpy/unit?id=track',
+    'Makey':'#/zh_CN/mpy/unit?id=makey'
+  },
+  "id":"unit_api"
+};
+
+var arduino_home_page = new Vue({
+    el:'#arduino_home_page',
+    data() {
+      return {
+        list: {
+            quickstart: quickstart,
+            unit: unit
+          }
+      };
+    }
+})
+</script>
\ No newline at end of file
diff --git a/docs/zh_CN/mpy_api/unit.md b/docs/zh_CN/mpy/unit.md
similarity index 82%
rename from docs/zh_CN/mpy_api/unit.md
rename to docs/zh_CN/mpy/unit.md
index 6a8e318c..f1e1e343 100644
--- a/docs/zh_CN/mpy_api/unit.md
+++ b/docs/zh_CN/mpy/unit.md
@@ -11,28 +11,74 @@ def get(unit, port, *arg)
 ```
 
 - 引入模块
-```python
 
+```python
 unit.get(unit.JOYSTICK, unit.PORTA)
 ```
 
 - 卸载模块
-```python
 
+```python
 unit.deinit()
 ```
 
 ## I2C
 
-### ENV
+### Ultrasonic
 
-- *[查看产品详情](zh_CN/unit/env)*
+- [查看产品详情](zh_CN/unit/sonic)
 
-- 设备类型：I2C
+- Chip: **RCWL-9600**
 
-- Chip: **dht12, bmp280**
+- Addr: **0x57**
 
-- Addr: ***0x5c***, ***0x76***
+```python
+
+Ultrasonic0 = unit.get(unit.ULTRASONIC, unit.PORTA)
+
+#读取测距信息
+distance = Ultrasonic0.distance
+```
+
+### Heart
+
+- [查看产品详情](zh_CN/unit/heart)
+
+- Chip: **RCWL-9600**
+
+- Addr: **0x57**
+
+```python
+
+heart0 = unit.get(unit.HEART, unit.PORTA)
+
+#设置传感器工作模式 0x02为心率模式 | 0x03为心率血氧模式
+heart0.setMode(mode)
+
+#调整传感器LED电流，RED为血氧测试LED电流，IR为心率测试LED电流。
+heart0.setLedCurrent(red, ir)
+
+#读取心率
+HeartRate = heart0.getHeartRate()
+
+#读取血氧
+SpO2 = heart0.getSpO2()
+
+```
+
+### ENV/ENV II
+
+- [查看产品详情](zh_CN/unit/env)
+
+- ENV
+- Chip: **dht12**, **bmp280**
+- Addr: **0x5c**, **0x76**
+
+-----------------------
+
+- ENV II
+- Chip: **sht30**, **bmp280**
+- Addr: **0x44**, **0x76**
 
 ```python
 # init --- Effective IO: PORTA | PORTC
@@ -48,11 +94,11 @@ pre = unit_env.pressure
 
 ### ADC
 
-- *[查看产品详情](zh_CN/unit/adc)*
+- [查看产品详情](zh_CN/unit/adc)
 
 - Chip: **ADS1100**
 
-- Addr: ***0x48***
+- Addr: **0x48**
 
 ``` python
 # init --- Effective IO: PORTA | PORTC
@@ -62,11 +108,9 @@ unit_adc = unit.get(unit.ADC, unit.PORTA)
 vol = unit_adc.voltage
 ```
 
-### ACCEL Unit
+### ACCEL
 
-- *[查看产品详情](zh_CN/unit/accel)*
-
-- 设备类型：I2C
+- [查看产品详情](zh_CN/unit/accel)
 
 - Chip: **ADXL345**
 
@@ -82,11 +126,11 @@ z = accel0.acceleration[2]
 
 ### DAC
 
-- *[查看产品详情](zh_CN/unit/dac)*
+- [查看产品详情](zh_CN/unit/dac)
 
 - Chip: **ADS1100**
 
-- Addr: ***0x48***
+- Addr: **0x48**
 
 ```python
 # init --- Effective IO: PORTA
@@ -100,13 +144,13 @@ unit_dac.writeData(data, save=False)
 unit_dac.setVoltage(vol, save=False)
 ```
 
-### Ncir
+### NCIR
 
-- *[查看产品详情](zh_CN/unit/ncir)*
+- [查看产品详情](zh_CN/unit/ncir)
 
 - Chip: **MLX90614**
 
-- Addr: ***0x5a***
+- Addr: **0x5a**
 
 ```python
 # init --- Effective IO: PORTA | PORTC
@@ -117,9 +161,7 @@ tmp = unit_ncir.temperature
 
 ### Joystick
 
-- *[查看产品详情](zh_CN/unit/joystick)* 
-
-- 设备类型：I2C
+- [查看产品详情](zh_CN/unit/joystick) 
 
 - Chip: **ATmega328P**
 
@@ -140,9 +182,9 @@ y = unit_joystick.InvertY
 press = unit_joystick.Press
 ```
 
-### Tof
+### ToF
 
-- *[查看产品详情](zh_CN/unit/tof)*
+- [查看产品详情](zh_CN/unit/tof)
 
 - Chip: **VL53L0X**
 
@@ -157,7 +199,7 @@ distance = unit_tof.distance
 
 ### Color
 
-- *[查看产品详情](zh_CN/unit/color)*
+- [查看产品详情](zh_CN/unit/color)
 
 - Chip: **TCS3472**
 
@@ -180,7 +222,7 @@ unit_color.blue
 
 ### Extend IO
 
-- *[查看产品详情](zh_CN/unit/extio)*
+- [查看产品详情](zh_CN/unit/extio)
 
 - Chip: **PCA9554PW**
 
@@ -209,7 +251,7 @@ unit_extIO.digitWrite(pin, value)
 
 ### RFID
 
-- *[查看产品详情](zh_CN/unit/rfid)*
+- [查看产品详情](zh_CN/unit/rfid)
 
 - Chip: **MFRC522**
 
@@ -232,7 +274,7 @@ dataStr = unit_rfid.readBlockStr(block)
 
 ### CardKB
 
-- *[查看产品详情](zh_CN/unit/cardkb)*
+- [查看产品详情](zh_CN/unit/cardkb)
 
 - Chip: **ATmega328P**
 
@@ -252,7 +294,7 @@ unit_cardKB = unit.get(unit.CARDKB, unit.PORTA)
 
 ### Tracker
 
-- *[查看产品详情](zh_CN/unit/track)*
+- [查看产品详情](zh_CN/unit/track)
 
 - Chip: **ATmega328P**
 
@@ -274,7 +316,7 @@ value = unit_track.getDigitalValue(pos)
 
 ### Makey
 
-- *[查看产品详情](zh_CN/unit/makey)*
+- [查看产品详情](zh_CN/unit/makey)
 
 - Chip: **ATmega328P**
 
@@ -289,13 +331,11 @@ data = unit_makey.value
 
 ---------------------------------------
 
-## IO
+## IO/ADC/DAC
 
 ### PIR
 
-- *[查看产品详情](zh_CN/unit/pir)*
-
-- 设备类型：IO
+- [查看产品详情](zh_CN/unit/pir)
 
 ```python
 # init --- Effective IO: PORTA | PORTB | PORTC
@@ -305,11 +345,9 @@ state = pir.state
 ```
 
 
-## Button
+### Button
 
-- *[查看产品详情](zh_CN/unit/button)*
-
-- 设备类型：IO
+- [查看产品详情](zh_CN/unit/button)
 
 ``` python
 # init --- Effective IO: PORTA | PORTB | PORTC
@@ -343,11 +381,9 @@ unit_btn.wasDoublePress(on_doublePress)
 unit_btn.pressFor(1.2, on_pressFor)
 ```
 
-## Dual Button
+### Dual Button
 
-- *[查看产品详情](zh_CN/unit/button)*
-
-- 设备类型：IO
+- [查看产品详情](zh_CN/unit/button)
 
 ```python
 # init --- Effective IO: PORTA | PORTB | PORTC
@@ -358,9 +394,9 @@ btnRed = unit_dualButton.btnBlue
 ```
 
 
-## Relay
+### Relay
 
-- *[查看产品详情](zh_CN/unit/relay)*
+- [查看产品详情](zh_CN/unit/relay)
 
 ```python
 # init --- Effective IO: PORTA | PORTB | PORTC
@@ -372,9 +408,9 @@ unit_relay.off()
 ```
 
 
-## IR
+### IR
 
-- *[查看产品详情](zh_CN/unit/ir)*
+- [查看产品详情](zh_CN/unit/ir)
 
 ```python
 # init --- Effective IO: PORTA | PORTB | PORTC
@@ -388,9 +424,9 @@ value = unit.rxStatus()
 ```
 
 
-## Angle
+### Angle
 
-Analog Device ( *[查看产品详情](zh_CN/unit/angle)*
+Analog Device ( [查看产品详情](zh_CN/unit/angle)
 
 ``` python
 # init --- Effective IO: PORTB
@@ -405,7 +441,7 @@ filterValue = unit_angle.read()
 
 ### Light
 
-- *[查看产品详情](zh_CN/unit/light)*
+- [查看产品详情](zh_CN/unit/light)
 
 ```python
 # init --- Effective IO: PORTB
@@ -418,7 +454,7 @@ digitalValue = unit_light.digitalValue
 
 ### Earth
 
-- *[查看产品详情](zh_CN/unit/light)*
+- [查看产品详情](zh_CN/unit/light)
 
 ```python
 # init --- Effective IO: PORTB
@@ -431,9 +467,7 @@ digitalValue = unit_earth.digitalValue
 
 ### Neopixel
 
-- *[查看产品详情](zh_CN/unit/neopixel)*
-
-- 设备类型：GPIO
+- [查看产品详情](zh_CN/unit/neopixel)
 
 - Chip: **SK6812**
 
@@ -452,11 +486,9 @@ unit_Neopixel.setColorAll(color)
 unit_Neopixel.setBrightness(brightness)
 ```
 
-
-
 ### RGB
 
-- *[查看产品详情](zh_CN/unit/rgb)*
+- [查看产品详情](zh_CN/unit/rgb)
 
 - Chip: **SK6812**
 
@@ -475,10 +507,9 @@ unit_Rgb.setColorAll(color)
 unit_Rgb.setBrightness(brightness)
 ```
 
-
 ### Weight
 
-- *[查看产品详情](zh_CN/unit/Servo)*
+- [查看产品详情](zh_CN/unit/Servo)
 
 - Chip: **HX711**
 
@@ -495,7 +526,7 @@ unit_weight.zero()
 
 ### Servo
 
-Analog Device ( *[查看产品详情](zh_CN/unit/Servo)*
+- [查看产品详情](zh_CN/unit/Servo)
 
 ```python
 # init --- Effective IO: PORTA | PORTB | PORTC
@@ -510,9 +541,10 @@ unit_servo.write_angle(degrees)
 
 ## UART
 
+
 ### Finger
 
-- *[查看产品详情](zh_CN/unit/finger)*
+- [查看产品详情](zh_CN/unit/finger)
 
 - Chip: **FPC1020A**
 
@@ -544,3 +576,4 @@ unit_finger.removeUser(user_id)
 # remove all user data
 unit_finger.removeAllUser()
 ```
+