def main():
"""
The method that controls everything.
Initialization procedure:
1: Wait for bytes from PC are specifically 'start'
1a: Dim the indicator light
2: Write the array of pins, `pin_strings`, so that the PC knows what it's working with
"""
# Objects
usb = VCP()
# Initial
while True:
read = usb.read_timeout(inf)
if read == 'start':
usb.write_encode('start')
break
# Object manipulation
indicator_light.intensity(32) # dim the indicator light
# Writes
usb.write_encode(pin_strings)
# Reads
timer_frequency = int(usb.verify_read(inf))
# Post init variables
pins = tuple(Pin(i) for i in pin_strings)
adc_pins = tuple(ADC(p) for p in pins)
adc_arrays = tuple(array('H', [0]) for j in adc_pins)
timer = Timer(8, freq=timer_frequency)
# Loop
while True:
start_time = millis()
ADC.read_timed_multi(adc_pins, adc_arrays, timer)
if usb.read_timeout(1) == 'kill':
hard_reset()
write_table = {}
usb.write_encode('newset\n')
for i, v in enumerate(adc_arrays):
usb.write_encode('\'{pin}\': {value}\n'.format(pin=pin_strings[i],
value=v[0]))
#write_table[pin_strings[i]] = v[0]
usb.write_encode('endset\n')
write_table['duration'] = elapsed_millis(start_time)
arv = array.array('h', 25 * [0x7fff])
adcv.read_timed(arv, tim)
print(len(arv))
for i in arv:
assert i > 1000 and i < 2000
arv = array.array('i', 30 * [-1])
adcv.read_timed(arv, tim)
print(len(arv))
for i in arv:
assert i > 1000 and i < 2000
# Test read_timed_multi
arv = bytearray(b'\xff'*50)
art = bytearray(b'\xff'*50)
ADC.read_timed_multi((adcv, adct), (arv, art), tim)
for i in arv:
assert i > 60 and i < 125
# Wide range: unsure of accuracy of temp sensor.
for i in art:
assert i > 15 and i < 200
arv = array.array('i', 25 * [-1])
art = array.array('i', 25 * [-1])
ADC.read_timed_multi((adcv, adct), (arv, art), tim)
for i in arv:
assert i > 1000 and i < 2000
# Wide range: unsure of accuracy of temp sensor.
for i in art:
assert i > 50 and i < 2000
from time import sleep
import os,gc
#initialise pins
adc0 = ADC(Pin.board.Y12)
adc1 = ADC(Pin.board.Y11)
tim = Timer(4, freq=5000) #create 5KHz timer
sleep(1)#wait for the board to flush some data and don't get mad when copying/paste the code
rx0_0 = array('H', (0 for i in range(5000)))
rx0_1 = array('H', (0 for i in range(5000)))
rx1_0 = array('H', (0 for i in range(5000)))
rx1_1 = array('H', (0 for i in range(5000)))
rx2_0 = array('H', (0 for i in range(5000)))
rx2_1 = array('H', (0 for i in range(5000)))
rx3_0 = array('H', (0 for i in range(5000)))
sleep(1)
rx3_1 = array('H', (0 for i in range(5000)))
#timeout of 5s before the acquisition,
sleep(5)
#4s acquisition:
ADC.read_timed_multi((adc0,adc1), (rx0_0,rx0_1), tim)
ADC.read_timed_multi((adc0,adc1), (rx1_0,rx1_1), tim)
ADC.read_timed_multi((adc0,adc1), (rx2_0,rx2_1), tim)
ADC.read_timed_multi((adc0,adc1), (rx3_0,rx3_1), tim)
gc.collect()
#main("/sd/write.py") # script to execute next to save the data
#Note: Y11 Vertical, Y12 Horizontal for the conf used
