This RaspberryPi expansion board can communicate with RaspberryPi via UART.
This is a ranging sensor.
Its' rang is 0 to 4500 mm
To provide a Raspberry Pi library for DFRobot A02YYUW
Ranging sensor.
- Ranging range: 0~4500mm.
- Set the range of ranging.
- Get ranging distance.
This sensor should work with DFRobot_A02_Distance on RaspberryPi.
Run the program:
$> python2 demo_get_distance.py
class DFRobot_A02_Distance:
''' Board status '''
STA_OK = 0x00
STA_ERR_CHECKSUM = 0x01
STA_ERR_SERIAL = 0x02
STA_ERR_CHECK_OUT_LIMIT = 0x03
STA_ERR_CHECK_LOW_LIMIT = 0x04
''' last operate status, users can use this variable to determine the result of a function call. '''
last_operate_status = STA_OK
''' variable '''
distance = 0
'''Maximum range'''
distance_max = 4500
distance_min = 0
def __init__(self):
'''
@brief Board init
'''
def check_sum(self, list):
'''
@brief Ranging packet verification
@param list: list distance data
@return Packet checksum
'''
set_dis_range(self, min, max):
'''
@brief set distance range.
@param min: int(0~4500) Minimum threshold min < max
@param max: int(0~4500) Maximum threshold min < max
'''
def measure(self):
'''
@brief Start ranging
'''
def getDistance(self):
'''
@brief Get measured distance
@return measured distance
'''·author [Arya xue.peng@dfrobot.com]