def __init__(self,DEBUG=False): self.DEBUG=DEBUG wiringpi2.wiringPiSPISetup(SPI_CS,SPI_SPEED) self.sendCmd(MAX7219_SCANLIMIT, 8) # enable outputs self.sendCmd(MAX7219_DECODEMODE, 0) # no digit decode self.sendCmd(MAX7219_DISPLAYTEST, 0) # display test off self.clear() self.brightness(7) # brightness 0-15 self.sendCmd(MAX7219_SHUTDOWN, 1) # start display
def __init__(self, ce_channel, speed):
self.ce_channel = ce_channel
os.system('gpio load spi')
wiringpi.wiringPiSetup()
error = wiringpi.wiringPiSPISetup(ce_channel,speed)
if (error == -1):
raise SetupException('Error while SPI setup')
print('InterfaceSPI initalized (CE_%d, speed:%.1fMHz)' % (ce_channel, speed * 0.000001))
def setup(self):
if wiringpi2.wiringPiSPISetup(0, 900000) == -1:
return False
# disable nss pullups
wiringpi2.pullUpDnControl(self.ADC_NSS, wiringpi2.GPIO.PUD_OFF)
# cycle NSS to ensure state in adc chip
self._adc_deselect()
self._adc_select()
self._adc_deselect()
return True
def telmin():
REF=3.3 # 5.p or 3.3
mode=1
w.wiringPiSetup()
w.wiringPiSPISetup(0,1000000)
w.pinMode(0,1)
w.pinMode(2,1)
w.pinMode(1,2)
#w.softPwmCreate(1,0,100)
w.softPwmCreate(2,0,100)
w.digitalWrite(0,1)
while 1:
data1 = MCP3008(1)
data7 = MCP3008(7)
time.sleep(0.01)
data11 = int(data1)-860;
w.softPwmWrite(2,data11)
data71 = int(((data7/20)*5.8)-225)
w.pwmWrite(1,data71*10)
print('%4.2f'%data11,'%4.2f'%data71,'%.2f'%(data1/1024*REF),"volt",'%.2f'%(data7/1024*REF),"volt")
def __init__(self):
# Set up the wiringpi object to use physical pin numbers
wp.wiringPiSetupPhys()
# Initialize the DRDY pin
wp.pinMode(self.DRDY_PIN, wp.INPUT)
# Initialize the reset pin
wp.pinMode(self.RESET_PIN, wp.OUTPUT)
wp.digitalWrite(self.RESET_PIN, wp.HIGH)
# Initialize PDWN pin
wp.pinMode(self.PDWN_PIN, wp.OUTPUT)
wp.digitalWrite(self.PDWN_PIN, wp.HIGH)
# Initialize CS pin
wp.pinMode(self.CS_PIN, wp.OUTPUT)
wp.digitalWrite(self.CS_PIN, wp.HIGH)
# Initialize the wiringpi SPI setup
spi_success = wp.wiringPiSPISetup(self.SPI_CHANNEL, self.SPI_FREQUENCY)
debug_print("SPI success " + str(spi_success))
def init():
"""
BSP initialize function. Must be called before any other BSP related
functions.
"""
global gI2cFd
if wiringpi2.wiringPiSetup() < 0:
print "bsp_init: failed to initialize wiringPi"
return -1
gI2cFd = wiringpi2.wiringPiI2CSetup(LM75A_I2C_ADDR)
if gI2cFd < 0:
print "bsp_init: failed to initialize I2C"
return -1
if wiringpi2.wiringPiSPISetup(0, 1000000) < 0:
print "bsp_init: failed to initialize SPI"
return -1
return 0
def init():
"""
BSP initialize function. Must be called before any other BSP related
functions.
"""
global gI2cFd
if wiringpi2.wiringPiSetup() < 0:
print "bsp_init: failed to initialize wiringPi"
return -1
gI2cFd = wiringpi2.wiringPiI2CSetup(LM75A_I2C_ADDR)
if gI2cFd < 0:
print "bsp_init: failed to initialize I2C"
return -1
if wiringpi2.wiringPiSPISetup(0, 1000000) < 0:
print "bsp_init: failed to initialize SPI"
return -1
return 0
#!/usr/bin/python3
# spiTest.py
import wiringpi2
print("Add SPI Loopback - connect P1-Pin19 and P1-Pin21")
print("[Press Enter to continue]")
input()
wiringpi2.wiringPiSPISetup(1,500000)
buffer=str.encode("HELLO")
print("Buffer sent %s" % buffer)
wiringpi2.wiringPiSPIDataRW(1,buffer)
print("Buffer received %s" % buffer)
print("Remove the SPI Loopback")
print("[Press Enter to continue]")
input()
buffer=str.encode("HELLO")
print("Buffer sent %s" % buffer)
wiringpi2.wiringPiSPIDataRW(1,buffer)
print("Buffer received %s" % buffer)
#End
def initialise(self):
u'''Initialises the gpio pins, the SPI interface and configures
the rfm22 module
'''
wiringpi.wiringPiSetup()
wiringpi.wiringPiSPISetup(RFM22_SPI_CHANNEL, 10000000)
RPIO.setup(RFM22_NIRQ_GPIO_BCM_PIN, RPIO.IN)
RPIO.cleanup_interrupts()
RPIO.add_interrupt_callback(RFM22_NIRQ_GPIO_BCM_PIN,
nirq_callback,
edge='falling')
wiringpi.pinMode(RFM22_SDN_GPIO_PIN, OUTPUT)
wiringpi.pinMode(RFM22_TXEN_GPIO_PIN, OUTPUT)
wiringpi.pinMode(RFM22_RXEN_GPIO_PIN, OUTPUT)
self.__rx_ant_off()
self.__tx_ant_off()
self.__sdn_off()
time.sleep(0.1) #reset module
self.__sdn_on()
#Wait 100ms to give rfm22 time to wake up
time.sleep(0.1)
#Read out chip version via SPI
version = self.__read(self.__DEVICE_VERSION)
debug_log("RFM22 chip version:", version)
if (version[1] != 0):
debug_log("SPI Communication working!")
#Reset all registers, software reset
self.__write(self.__OPERATING_FUNCTION_CONTROL_1, 0x80)
#Wait 20ms to let the module boot up
time.sleep(0.02)
u'''Enable FIFO under/overflow, external, packet send,
received and crc error interrupt.'''
self.__write(self.__INTERRUPT_ENABLE_1, 0x87)
u'''Enable rssi interrupt'''
#self.__write(self.__INTERRUPT_ENABLE_2, 0x10) #Raspberry PI does not react fast enough to read correct value
u'''Switch to ready mode. 200us to tx or rx'''
self.__write(self.__OPERATING_FUNCTION_CONTROL_1, 0x01)
self.__write(self.__CRYSTAL_OSCILLATOR_LOAD, 0x7f)
u'''Enable AFC'''
self.__write(self.__AFC_LOOP_GEARSHIFT_OVERRIDE, 0x40)
u'''Set AFC timing'''
self.__write(self.__AFC_TIMING_CONTROL, 0x0A)
self.__write(self.__CLOCK_RECOVERY_GEARSHIFT_OVERRIDE, 0x05)
u'''Set IF filter bandwidth'''
self.__write(self.__IF_FILTER_BANDWIDTH, 0x9A)
u'''Set clock recovery oversampling rate'''
self.__write(self.__CLOCK_RECOVERY_OVERSAMPLING_RATIO, 0x3C)
self.__write(self.__CLOCK_RECOVERY_OFFSET_2, 0x02)
self.__write(self.__CLOCK_RECOVERY_OFFSET_1, 0x22)
self.__write(self.__CLOCK_RECOVERY_OFFSET_0, 0x22)
self.__write(self.__CLOCK_RECOVERY_TIMING_LOOP_GAIN_1, 0x07)
self.__write(self.__CLOCK_RECOVERY_TIMING_LOOP_GAIN_0, 0xFF)
u'''Set AFC Limiter'''
self.__write(self.__AFC_LIMITER, 0x48)
u'''Set RSSI threshold for clear channel assessment'''
self.__write(self.__RSSI_THRESSHOLF_FOR_CLEAR_CHANNEL_INDICATOR,
self.__RSSI_CLEAR_CHANNEL_THRESHOLD)
u'''RX, TX packet handling, enable CCIT CRC'''
self.__write(self.__DATA_ACCESS_CONTROL, 0xAC)
u'''Header check, valid for broadcast or check byte'''
self.__write(self.__HEADER_CONTROL_1, 0xFF)
u'''4 byte header (Header 3,2,1,0) and 2 byte sync (Synchronization Word 3,2) '''
self.__write(self.__HEADER_CONTROL_2, 0x42)
u'''Synchronization words'''
self.__write(self.__SYNC_WORD_3, self.__PACKET_SYNC_BYTE_3)
self.__write(self.__SYNC_WORD_2, self.__PACKET_SYNC_BYTE_2)
self.__write(self.__SYNC_WORD_1, self.__PACKET_SYNC_BYTE_1)
self.__write(self.__SYNC_WORD_0, self.__PACKET_SYNC_BYTE_0)
u'''Transmit header'''
self.__write(self.__TRANSMIT_HEADER_3, self.__TRANSMIT_HEADER_BYTE_3)
self.__write(self.__TRANSMIT_HEADER_2, self.__TRANSMIT_HEADER_BYTE_2)
self.__write(self.__TRANSMIT_HEADER_1, self.__TRANSMIT_HEADER_BYTE_1)
self.__write(self.__TRANSMIT_HEADER_0, self.__TRANSMIT_HEADER_BYTE_0)
self.__write(self.__CHECK_HEADER_3, self.__TRANSMIT_HEADER_BYTE_3)
self.__write(self.__CHECK_HEADER_2, self.__TRANSMIT_HEADER_BYTE_2)
self.__write(self.__CHECK_HEADER_1, self.__TRANSMIT_HEADER_BYTE_1)
self.__write(self.__CHECK_HEADER_0, self.__TRANSMIT_HEADER_BYTE_0)
u'''Check header enable mask, 0xFF means all bits of the corresponding
* header will be checked. '''
self.__write(self.__HEADER_ENABLE_3, 0xFF)
self.__write(self.__HEADER_ENABLE_2, 0xFF)
self.__write(self.__HEADER_ENABLE_1, 0xFF)
self.__write(self.__HEADER_ENABLE_0, 0xFF)
u'''Switch on automatic RX gain control'''
self.__write(self.__AGC_OVERRIDE_1, 0x60)
u'''TODO: example check agc override Register 0x6a does not exist. Data sheet wrong?'''
u'''Set TX power and LNA controller on if RFM22 != TX
* TXPower equals
* -1dbm 0x00
* 2dbm 0x01 set to 2dbm
* 5dbm 0x02
* 8dbm 0x03
* 11dbm 0x04
* 14dbm 0x05
* 17dbm 0x06
* 20dbm 0x07
* '''
self.__write(self.__TX_POWER, (0x01 | 0x80))
u'''Set TX data rate to 0x199a = 100 kbps.
* Datarate calculation:
* TX_DR = 10^6 * 0x199a / 2^16 '''
self.__write(self.__TX_DATA_RATE_1, 0x19)
#Bits 15:8
self.__write(self.__TX_DATA_RATE_0, 0x9a)
#Bits 7:0
u'''Modulation control, manchester data inversion.'''
self.__write(self.__MODULATION_MODE_CONTROL_1, 0x0C)
u'''Modulation control, FIFO Mode, GFSK '''
self.__write(self.__MODULATION_MODE_CONTROL_2, 0x23)
u'''Frequency deviation 50kHz
* deviation = 625 * 0x50'''
self.__write(self.__FREQUENCY_DEVIATION, 0x50)
u'''Select frequency band, high band = >480 < 960 MHz,
* 860- 879.9MHz
* Regulations: 869,4 869,65 at 500mW ERP < 10%
* '''
self.__write(self.__FREQUENCY_BAND_SELECT, 0x73)
self.__write(self.__NOMINAL_CARRIER_FREQUENCY_1, 0x76)
self.__write(self.__NOMINAL_CARRIER_FREQUENCY_0, 0xC0)
u'''Set carrier '''
debug_log(u"RFM22 initialised")
def open(ch):
wiringpi2.wiringPiSPISetup(ch, 4000)
# Arduino < > PI
# 11 MOSI
# 12 MISO
# 13 SCLK
# DO NOT FORGET 3.3V <> 5V bi-directional level convert to avoid fried pi
# Jonathan H 11/09/2013
import wiringpi2
import sys
import Tkinter as tki # tkinter in Python 3
from time import sleep
print sys.version
wiringpi2.wiringPiSPISetup(1,2000000) #2MHZ = SPI_CLOCK_DIV8; (16Mhz/8)
# Class to replace missing switch/case functionality
# http://code.activestate.com/recipes/410692/
class switch(object):
def __init__(self, value):
self.value = value
self.fall = False
def __iter__(self):
"""Return the match method once, then stop"""
yield self.match
raise StopIteration
def match(self, *args):
"""Indicate whether or not to enter a case suite"""
def initialise(self):
u'''Initialises the gpio pins, the SPI interface and configures
the rfm22 module
'''
wiringpi.wiringPiSetup()
wiringpi.wiringPiSPISetup(RFM22_SPI_CHANNEL,10000000)
RPIO.setup(RFM22_NIRQ_GPIO_BCM_PIN, RPIO.IN)
RPIO.cleanup_interrupts()
RPIO.add_interrupt_callback(RFM22_NIRQ_GPIO_BCM_PIN, nirq_callback, edge='falling')
wiringpi.pinMode(RFM22_SDN_GPIO_PIN, OUTPUT)
wiringpi.pinMode(RFM22_TXEN_GPIO_PIN, OUTPUT)
wiringpi.pinMode(RFM22_RXEN_GPIO_PIN, OUTPUT)
self.__rx_ant_off()
self.__tx_ant_off()
self.__sdn_off()
time.sleep(0.1) #reset module
self.__sdn_on()
#Wait 100ms to give rfm22 time to wake up
time.sleep(0.1)
#Read out chip version via SPI
version = self.__read(self.__DEVICE_VERSION)
debug_log("RFM22 chip version:", version)
if (version[1] != 0):
debug_log("SPI Communication working!")
#Reset all registers, software reset
self.__write(self.__OPERATING_FUNCTION_CONTROL_1, 0x80)
#Wait 20ms to let the module boot up
time.sleep(0.02)
u'''Enable FIFO under/overflow, external, packet send,
received and crc error interrupt.'''
self.__write(self.__INTERRUPT_ENABLE_1, 0x87)
u'''Enable rssi interrupt'''
#self.__write(self.__INTERRUPT_ENABLE_2, 0x10) #Raspberry PI does not react fast enough to read correct value
u'''Switch to ready mode. 200us to tx or rx'''
self.__write(self.__OPERATING_FUNCTION_CONTROL_1, 0x01)
self.__write(self.__CRYSTAL_OSCILLATOR_LOAD, 0x7f);
u'''Enable AFC'''
self.__write(self.__AFC_LOOP_GEARSHIFT_OVERRIDE, 0x40);
u'''Set AFC timing'''
self.__write(self.__AFC_TIMING_CONTROL, 0x0A);
self.__write(self.__CLOCK_RECOVERY_GEARSHIFT_OVERRIDE, 0x05);
u'''Set IF filter bandwidth'''
self.__write(self.__IF_FILTER_BANDWIDTH, 0x9A);
u'''Set clock recovery oversampling rate'''
self.__write(self.__CLOCK_RECOVERY_OVERSAMPLING_RATIO, 0x3C);
self.__write(self.__CLOCK_RECOVERY_OFFSET_2, 0x02);
self.__write(self.__CLOCK_RECOVERY_OFFSET_1, 0x22);
self.__write(self.__CLOCK_RECOVERY_OFFSET_0, 0x22);
self.__write(self.__CLOCK_RECOVERY_TIMING_LOOP_GAIN_1, 0x07);
self.__write(self.__CLOCK_RECOVERY_TIMING_LOOP_GAIN_0, 0xFF);
u'''Set AFC Limiter'''
self.__write(self.__AFC_LIMITER, 0x48);
u'''Set RSSI threshold for clear channel assessment'''
self.__write(self.__RSSI_THRESSHOLF_FOR_CLEAR_CHANNEL_INDICATOR, self.__RSSI_CLEAR_CHANNEL_THRESHOLD);
u'''RX, TX packet handling, enable CCIT CRC'''
self.__write(self.__DATA_ACCESS_CONTROL, 0xAC);
u'''Header check, valid for broadcast or check byte'''
self.__write(self.__HEADER_CONTROL_1, 0xFF);
u'''4 byte header (Header 3,2,1,0) and 2 byte sync (Synchronization Word 3,2) '''
self.__write(self.__HEADER_CONTROL_2, 0x42);
u'''Synchronization words'''
self.__write(self.__SYNC_WORD_3, self.__PACKET_SYNC_BYTE_3);
self.__write(self.__SYNC_WORD_2, self.__PACKET_SYNC_BYTE_2);
self.__write(self.__SYNC_WORD_1, self.__PACKET_SYNC_BYTE_1);
self.__write(self.__SYNC_WORD_0, self.__PACKET_SYNC_BYTE_0);
u'''Transmit header'''
self.__write(self.__TRANSMIT_HEADER_3, self.__TRANSMIT_HEADER_BYTE_3);
self.__write(self.__TRANSMIT_HEADER_2, self.__TRANSMIT_HEADER_BYTE_2);
self.__write(self.__TRANSMIT_HEADER_1, self.__TRANSMIT_HEADER_BYTE_1);
self.__write(self.__TRANSMIT_HEADER_0, self.__TRANSMIT_HEADER_BYTE_0);
self.__write(self.__CHECK_HEADER_3, self.__TRANSMIT_HEADER_BYTE_3);
self.__write(self.__CHECK_HEADER_2, self.__TRANSMIT_HEADER_BYTE_2);
self.__write(self.__CHECK_HEADER_1, self.__TRANSMIT_HEADER_BYTE_1);
self.__write(self.__CHECK_HEADER_0, self.__TRANSMIT_HEADER_BYTE_0);
u'''Check header enable mask, 0xFF means all bits of the corresponding
* header will be checked. '''
self.__write(self.__HEADER_ENABLE_3, 0xFF);
self.__write(self.__HEADER_ENABLE_2, 0xFF);
self.__write(self.__HEADER_ENABLE_1, 0xFF);
self.__write(self.__HEADER_ENABLE_0, 0xFF);
u'''Switch on automatic RX gain control'''
self.__write(self.__AGC_OVERRIDE_1, 0x60);
u'''TODO: example check agc override Register 0x6a does not exist. Data sheet wrong?'''
u'''Set TX power and LNA controller on if RFM22 != TX
* TXPower equals
* -1dbm 0x00
* 2dbm 0x01 set to 2dbm
* 5dbm 0x02
* 8dbm 0x03
* 11dbm 0x04
* 14dbm 0x05
* 17dbm 0x06
* 20dbm 0x07
* '''
self.__write(self.__TX_POWER, (0x01|0x80));
u'''Set TX data rate to 0x199a = 100 kbps.
* Datarate calculation:
* TX_DR = 10^6 * 0x199a / 2^16 '''
self.__write(self.__TX_DATA_RATE_1, 0x19); #Bits 15:8
self.__write(self.__TX_DATA_RATE_0, 0x9a); #Bits 7:0
u'''Modulation control, manchester data inversion.'''
self.__write(self.__MODULATION_MODE_CONTROL_1, 0x0C);
u'''Modulation control, FIFO Mode, GFSK '''
self.__write(self.__MODULATION_MODE_CONTROL_2, 0x23);
u'''Frequency deviation 50kHz
* deviation = 625 * 0x50'''
self.__write(self.__FREQUENCY_DEVIATION, 0x50);
u'''Select frequency band, high band = >480 < 960 MHz,
* 860- 879.9MHz
* Regulations: 869,4 869,65 at 500mW ERP < 10%
* '''
self.__write(self.__FREQUENCY_BAND_SELECT, 0x73);
self.__write(self.__NOMINAL_CARRIER_FREQUENCY_1, 0x76);
self.__write(self.__NOMINAL_CARRIER_FREQUENCY_0, 0xC0);
u'''Set carrier '''
debug_log(u"RFM22 initialised")
max7219WriteReg(i, font_en_8x8.data[index][i-1])
# Display char of font lib on MAX7219
def max7219DiplayMxChar(char):
for i in range(1, 9):
max7219WriteReg(i, font_en_8x8.data[ord(char)-32][i-1])
# Init GPIO to wiringPi pin mode
io = wpi.GPIO(wpi.GPIO.WPI_MODE_PINS)
# Init CS#
io.pinMode(SPI_CS_Pin, io.OUTPUT)
io.digitalWrite(SPI_CS_Pin, io.HIGH)
time.sleep(0.2)
# Init SPI0 for MAX7219
spi = wpi.wiringPiSPISetup(0, 1000000)
if spi<0:
print("SPI init error!")
exit(1)
print("SPI init OK!")
# Init MAX7219
max7219Init()
print("MAX7219 init OK!")
# Display font lib
print("Starting display...")
while True:
for i in range(0, 95):
# print(i)
max7219DiplayMxRaw(i)
def open_port(self):
self.port = wiringpi2.wiringPiSPISetup(self.spi_name, 125000)
self.blank()
#!/usr/bin/env python
import wiringpi2
setupres = wiringpi2.wiringPiSPISetup(0, 5000)
while True:
command = raw_input("Data to write?")
written = wiringpi2.wiringPiSPIDataRW(0, command+'\n')
def __init__(self):
self.outBuf = []
self.fd = wiringpi2.wiringPiSPISetup(SPI_CHANNEL, SPI_SPEED)
def sendCode(c):
import wiringpi2
fd = wiringpi2.wiringPiSPISetup(0,500000)
os.write(fd, getCode(*c))
os.close(fd)
def __init__(self):
self.outBuf = []
self.fd = wiringpi2.wiringPiSPISetup(SPI_CHANNEL, SPI_SPEED)
def __init__(self, channel=0, speed=1000000, display_count=1, keep_alive=False):
self.__channel = channel
self.setDisplayCount(display_count)
self.keep_alive = keep_alive
wiringpi2.wiringPiSPISetup(self.__channel, speed)
self.__display = 0 # Starts on display 0
import wiringpi2 as wiringpi import RPi.GPIO as GPIO import time import io GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) c0 = wiringpi.wiringPiSPISetup(0, 8000000) print "Inital Result : ", c0 #Making array each IC is addressed by pin_base[IC#-1] PIN_BASE = 65 pin_base = [PIN_BASE, PIN_BASE+16, PIN_BASE+32, PIN_BASE+48, PIN_BASE+64, PIN_BASE+80, PIN_BASE+96, PIN_BASE+112, PIN_BASE+128, PIN_BASE+144, PIN_BASE+160, PIN_BASE+176] #doing setup for each individual IC wiringpi.mcp23s17Setup(pin_base[0], 0, 0x10) #IC 0 (LEDs 1-4) (Pins 65-80) wiringpi.mcp23s17Setup(pin_base[1], 0, 0x11) #IC 1 (LEDs 5-8) (Pins 81-96) wiringpi.mcp23s17Setup(pin_base[2], 0, 0x12) #IC 2 (LEDs 9-12) (Pins 97-112) wiringpi.mcp23s17Setup(pin_base[3], 0, 0x13) #IC 3 (LEDs 13-16) (Pins 113-128) wiringpi.mcp23s17Setup(pin_base[4], 0, 0x14) #IC 4 (LEDs 17-20) (Pins 129-144) wiringpi.mcp23s17Setup(pin_base[5], 0, 0x15) #IC 5 (LEDs 21-24) (Pins 145-160) wiringpi.mcp23s17Setup(pin_base[6], 1, 0x10) #IC 6 (LEDs 25-28) (Pins 161-176) wiringpi.mcp23s17Setup(pin_base[7], 1, 0x11) #IC 7 (LEDs 29-32) (Pins 177-192) wiringpi.mcp23s17Setup(pin_base[8], 1, 0x12) #IC 8 (LEDs 33-36) (Pins 193-208) wiringpi.mcp23s17Setup(pin_base[9], 1, 0x13) #IC 9 (LEDs 37-40) (Pins 209-224) wiringpi.mcp23s17Setup(pin_base[10], 1, 0x14) #IC 10 (LEDs 41-44) (Pins 225-240) wiringpi.mcp23s17Setup(pin_base[11], 1, 0x15) #IC 11 (LEDs 45-48) (Pins 241-256)
def open_port(self):
self.port = wiringpi2.wiringPiSPISetup(self.spi_name, 125000)
self.blank()
def sync():
import wiringpi2
fd = wiringpi2.wiringPiSPISetup(0,500000)
os.write(fd, "\0"*257)
os.close(fd)
def __init__(self):
self.counter = 0
self.devices = []
wiringpi.wiringPiSetup()
wiringpi.wiringPiSPISetup(self.SPI_CHANNEL, self.SPI_SPEED)