compAIR/compLIB
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Add local development to SPI

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This commit is contained in:
Konstantin Lampalzer 2021-10-14 13:36:03 +02:00
parent 881f8ddbf8
commit eafad7ccdb
1 changed files with 14 additions and 7 deletions
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21
compLib/Spi.py
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@ -1,4 +1,4 @@
import spidev import importlib
from threading import Thread, Lock from threading import Thread, Lock
from enum import IntEnum from enum import IntEnum
import time import time
@ -12,13 +12,17 @@ SPI_SPEED = 1000000
SPI_BUFFER_SIZE = 32 SPI_BUFFER_SIZE = 32
SPI_HEALTH = True SPI_HEALTH = True
spi = spidev.SpiDev() # For development purposes
spi.open(SPI_BUS, SPI_DEVICE) spi_found = importlib.util.find_spec("spidev") is not None
spi.max_speed_hz = SPI_SPEED spi = None
spi.mode = 0 if spi_found:
spi.bits_per_word = 8 spi = spidev.SpiDev()
spi.open(SPI_BUS, SPI_DEVICE)
spi.max_speed_hz = SPI_SPEED
spi.mode = 0
spi.bits_per_word = 8
spi_mutex = Lock() spi_mutex = Lock()
class Register(IntEnum): class Register(IntEnum):
IDENTIFICATION_MODEL_ID = 1, IDENTIFICATION_MODEL_ID = 1,
@ -106,6 +110,9 @@ class Spi(object):
@staticmethod @staticmethod
def transfer(tx_buffer: list): def transfer(tx_buffer: list):
if not spi_found:
return [] * SPI_BUFFER_SIZE
write_reg = tx_buffer[1] write_reg = tx_buffer[1]
spi.xfer(tx_buffer) spi.xfer(tx_buffer)