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- #Get acceleration data from Chronos watch.
- #Taken from info posted at: http://e2e.ti.com/support/microcontrollers/msp43016-bit_ultra-low_power_mcus/f/166/t/32714.aspx
- #x, y, and z values may not be "in order". The first three bytes from the packet
- #of data sent from the watch seemed to be different than what was listed
- #on the page, though the datatype byte was in the correct place. So YMMV.
- #
- #Written by Sean Brewer (seabre)
- #seabre986@gmail.com
- #
- import serial
- import array
- import csv
- #Open a CSV file for writing
- accelcsvfile = csv.writer(open('acceldata.csv', 'w'))
- def startAccessPoint():
- return array.array('B', [0xFF, 0x07, 0x03]).tostring()
- def accDataRequest():
- return array.array('B', [0xFF, 0x08, 0x07, 0x00, 0x00, 0x00, 0x00]).tostring()
- #Open COM port 6 (check your system info to see which port
- #yours is actually on.)
- #argments are 5 (COM6), 115200 (bit rate), and timeout is set so
- #the serial read function won't loop forever.
- # ser = serial.Serial(5,115200,timeout=1)
- ser = serial.Serial("/dev/ttyACM0",115200,timeout=1)
- #Start access point
- ser.write(startAccessPoint())
- #Write the top row so you know what everything is.
- accelcsvfile.writerow(["x","y","z", "M1", "M2", "S1"])
- while True:
- #Send request for acceleration data
- ser.write(accDataRequest())
- accel = ser.read(7)
- M1 = 0
- M2 = 0
- S1 = 0
- unknown = 1 # indicate that the received data is of unkown type
- if len(accel) != 7:
- continue
- if ord(accel[6]) == 1 and ord(accel[5]) == 7 and ord(accel[4]) == 6 and ord(accel[3]) == 255 and ord(accel[2]) == 0 and ord(accel[1]) == 0 and ord(accel[0]) == 0:
- # bogus data?
- unknown = 0
- continue
- if ord(accel[6]) == 17 and ord(accel[5]) == 7 and ord(accel[4]) == 6 and ord(accel[3]) == 255 and ord(accel[2]) == 0 and ord(accel[1]) == 0 and ord(accel[0]) == 0:
- print "M1 pressed"
- M1 = 1
- unknown = 0
- if ord(accel[6]) == 33 and ord(accel[5]) == 7 and ord(accel[4]) == 6 and ord(accel[3]) == 255 and ord(accel[2]) == 0 and ord(accel[1]) == 0 and ord(accel[0]) == 0:
- print "M2 pressed"
- M2 = 1
- unknown = 0
- if ord(accel[6]) == 49 and ord(accel[5]) == 7 and ord(accel[4]) == 6 and ord(accel[3]) == 255 and ord(accel[2]) == 0 and ord(accel[1]) == 0 and ord(accel[0]) == 0:
- print "S1 pressed"
- S1 = 1
- unknown = 0
- if ord(accel[6]) == 255 and ord(accel[5]) == 7 and ord(accel[4]) == 6 and ord(accel[3]) == 255 and ord(accel[2]) == 0 and ord(accel[1]) == 0 and ord(accel[0]) == 0:
- # accelerometer data, but it is bogus
- unknown = 0
- continue
- if ord(accel[6]) == 255 and ord(accel[5]) == 7 and ord(accel[4]) == 6 and ord(accel[3]) == 255:
- print "Accelerometer data: x: " + str(ord(accel[2])) + "\t y: " + str(ord(accel[1])) + "\t z: " + str(ord(accel[0]))
- unknown = 0
- if unknown == 1:
- print "Unknown data: 6: " + str(ord(accel[6])) + "\t5: " + str(ord(accel[5])) + "\t4: " + str(ord(accel[4])) + "\t3: " + str(ord(accel[3])) + "\t2: " + str(ord(accel[2])) + "\t1: " + str(ord(accel[1])) + "\t0: " + str(ord(accel[0]))
- continue
- #This actually writes the data to the CSV file.
- accelcsvfile.writerow([str(ord(accel[2])),str(ord(accel[1])),str(ord(accel[0])),str(M1),str(M2),str(S1)])
- ser.close()
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