def setup_spi():
logger.debug("SPI setup")
spi = SpiDev()
spi.open(bus=0, device=0)
spi.max_speed_hz = 1000000
spi.bits_per_word = 8
spi.loop = False
spi.mode = 3
spi.no_cs = True
return spi
def __init__(self,
port=0,
dev=0,
speed=1000000,
interval=600,
node="acc_sensor",
save_path=None):
self.interval = interval
self.node = node
self.save_path = save_path
spi = SpiDev()
spi.open(port, dev)
#config SPI port
spi.max_speed_hz = speed
spi.mode = 0b11
#set_pin()
self.writebytes = spi.writebytes
self.writebytes2 = spi.xfer3
self.read = spi.xfer2
self.start_up()
self.file_time = datetime.now()
self.fname = self.node + self.file_time.strftime("_%Y-%m-%d_%H-%M.csv")
print("creating new log file")
self.signals = ['time', 'x', 'y', 'z']
import Adafruit_BBIO.GPIO as GPIO
from spidev import SpiDev
import time
import datetime
spi = SpiDev(1, 0)
spi.mode = 3
spi.max_speed_hz = 200000
#spi.xfer2([0x0])
GPIO.setup("P9_11", GPIO.OUT) # A0 sipm select bit0
GPIO.setup("P9_12", GPIO.OUT) # A1 sipm select bit1
GPIO.setup("P9_13", GPIO.OUT) # A2 sipm select bit2
GPIO.setup("P9_14", GPIO.OUT) # A3 sipm select bit3
GPIO.setup("P9_15", GPIO.OUT) # A5 chip select bit0
GPIO.setup("P9_16", GPIO.OUT) # A6 chip select bit1
#chip select map
# 0: nc
# 1: pga
# 2: temp
# 3: mem
GPIO.output("P9_11", GPIO.LOW)
GPIO.output("P9_12", GPIO.LOW)
GPIO.output("P9_13", GPIO.LOW)
GPIO.output("P9_14", GPIO.LOW)
GPIO.output("P9_15", GPIO.LOW)
def config_interface(spi_dev: SpiDev, clock: int) -> None:
spi_dev.cshigh = True # use inverted CS
spi_dev.mode = 0b01
spi_dev.max_speed_hz = clock # set SPI clock
def _setup_spidev(self, bus, channel, mode=1):
spi = SpiDev(bus, channel)
spi.max_speed_hz = 1200000
spi.mode = mode
return spi
