lgpio.error: 'GPIO busy' when trying to run demo with python on raspberry pi
stephfulton opened this issue · 2 comments
stephfulton commented
I just got a 4.2 in e-Paper display and want to use it to display humidity from a sensor. I have it hooked up to my Raspberry Pi 4, and everything is wired correctly. But no matter what I do, I get this "lgpio.error: 'GPIO busy'" error when running any of the examples (I've tried all the 4in2 demos). Please help!
(.env) stephaniefulton@raspberrypi:~/greenhouse/e-Paper/RaspberryPi_JetsonNano/e-Paper/RaspberryPi_JetsonNano/python/examples $ sudo python3 epd_4in2_V2_test.py
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/gpiozero/pins/pi.py", line 408, in pin
pin = self.pins[info]
~~~~~~~~~^^^^^^
KeyError: PinInfo(number=11, name='GPIO17', names=frozenset({17, 'WPI0', '17', 'BCM17', 'GPIO17', 'BOARD11', 'J8:11'}), pull='', row=6, col=1, interfaces=frozenset({'', 'spi', 'gpio', 'dpi', 'uart'}))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/stephaniefulton/greenhouse/e-Paper/RaspberryPi_JetsonNano/e-Paper/RaspberryPi_JetsonNano/python/examples/epd_4in2_V2_test.py", line 11, in <module>
from waveshare_epd import epd4in2_V2
File "/home/stephaniefulton/greenhouse/e-Paper/RaspberryPi_JetsonNano/e-Paper/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd4in2_V2.py", line 32, in <module>
from . import epdconfig
File "/home/stephaniefulton/greenhouse/e-Paper/RaspberryPi_JetsonNano/e-Paper/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epdconfig.py", line 276, in <module>
implementation = RaspberryPi()
^^^^^^^^^^^^^
File "/home/stephaniefulton/greenhouse/e-Paper/RaspberryPi_JetsonNano/e-Paper/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epdconfig.py", line 52, in __init__
self.GPIO_RST_PIN = gpiozero.LED(self.RST_PIN)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 103, in __call__
self = super().__call__(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gpiozero/output_devices.py", line 192, in __init__
super().__init__(pin, active_high=active_high,
File "/usr/lib/python3/dist-packages/gpiozero/output_devices.py", line 74, in __init__
super().__init__(pin, pin_factory=pin_factory)
File "/usr/lib/python3/dist-packages/gpiozero/mixins.py", line 75, in __init__
super().__init__(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 549, in __init__
pin = self.pin_factory.pin(pin)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gpiozero/pins/pi.py", line 410, in pin
pin = self.pin_class(self, info)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gpiozero/pins/lgpio.py", line 126, in __init__
lgpio.gpio_claim_input(
File "/usr/lib/python3/dist-packages/lgpio.py", line 755, in gpio_claim_input
return _u2i(_lgpio._gpio_claim_input(handle&0xffff, lFlags, gpio))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/lgpio.py", line 458, in _u2i
raise error(error_text(v))
lgpio.error: 'GPIO busy'
jayofelony commented
Change your epdconfig with this older file and it should work again. Until waveshare fixes it.
# /*****************************************************************************
# * | File : epdconfig.py
# * | Author : Waveshare team
# * | Function : Hardware underlying interface
# * | Info :
# *----------------
# * | This version: V1.2
# * | Date : 2022-10-29
# * | Info :
# ******************************************************************************
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
import os
import logging
import sys
import time
logger = logging.getLogger(__name__)
class RaspberryPi:
# Pin definition
RST_PIN = 17
DC_PIN = 25
CS_PIN = 8
BUSY_PIN = 24
PWR_PIN = 18
def __init__(self):
import spidev
import RPi.GPIO
self.GPIO = RPi.GPIO
self.SPI = spidev.SpiDev()
def digital_write(self, pin, value):
self.GPIO.output(pin, value)
def digital_read(self, pin):
return self.GPIO.input(pin)
def delay_ms(self, delaytime):
time.sleep(delaytime / 1000.0)
def spi_writebyte(self, data):
self.SPI.writebytes(data)
def spi_writebyte2(self, data):
self.SPI.writebytes2(data)
def module_init(self):
self.GPIO.setmode(self.GPIO.BCM)
self.GPIO.setwarnings(False)
self.GPIO.setup(self.RST_PIN, self.GPIO.OUT)
self.GPIO.setup(self.DC_PIN, self.GPIO.OUT)
self.GPIO.setup(self.CS_PIN, self.GPIO.OUT)
self.GPIO.setup(self.PWR_PIN, self.GPIO.OUT)
self.GPIO.setup(self.BUSY_PIN, self.GPIO.IN)
self.GPIO.output(self.PWR_PIN, 1)
# SPI device, bus = 0, device = 0
self.SPI.open(0, 0)
self.SPI.max_speed_hz = 4000000
self.SPI.mode = 0b00
return 0
def module_exit(self):
logger.debug("spi end")
self.SPI.close()
logger.debug("close 5V, Module enters 0 power consumption ...")
self.GPIO.output(self.RST_PIN, 0)
self.GPIO.output(self.DC_PIN, 0)
self.GPIO.output(self.PWR_PIN, 0)
self.GPIO.cleanup([self.RST_PIN, self.DC_PIN, self.CS_PIN, self.BUSY_PIN, self.PWR_PIN])
class JetsonNano:
# Pin definition
RST_PIN = 17
DC_PIN = 25
CS_PIN = 8
BUSY_PIN = 24
PWR_PIN = 18
def __init__(self):
import ctypes
find_dirs = [
os.path.dirname(os.path.realpath(__file__)),
'/usr/local/lib',
'/usr/lib',
]
self.SPI = None
for find_dir in find_dirs:
so_filename = os.path.join(find_dir, 'sysfs_software_spi.so')
if os.path.exists(so_filename):
self.SPI = ctypes.cdll.LoadLibrary(so_filename)
break
if self.SPI is None:
raise RuntimeError('Cannot find sysfs_software_spi.so')
import Jetson.GPIO
self.GPIO = Jetson.GPIO
def digital_write(self, pin, value):
self.GPIO.output(pin, value)
def digital_read(self, pin):
return self.GPIO.input(self.BUSY_PIN)
def delay_ms(self, delaytime):
time.sleep(delaytime / 1000.0)
def spi_writebyte(self, data):
self.SPI.SYSFS_software_spi_transfer(data[0])
def spi_writebyte2(self, data):
for i in range(len(data)):
self.SPI.SYSFS_software_spi_transfer(data[i])
def module_init(self):
self.GPIO.setmode(self.GPIO.BCM)
self.GPIO.setwarnings(False)
self.GPIO.setup(self.RST_PIN, self.GPIO.OUT)
self.GPIO.setup(self.DC_PIN, self.GPIO.OUT)
self.GPIO.setup(self.CS_PIN, self.GPIO.OUT)
self.GPIO.setup(self.PWR_PIN, self.GPIO.OUT)
self.GPIO.setup(self.BUSY_PIN, self.GPIO.IN)
self.GPIO.output(self.PWR_PIN, 1)
self.SPI.SYSFS_software_spi_begin()
return 0
def module_exit(self):
logger.debug("spi end")
self.SPI.SYSFS_software_spi_end()
logger.debug("close 5V, Module enters 0 power consumption ...")
self.GPIO.output(self.RST_PIN, 0)
self.GPIO.output(self.DC_PIN, 0)
self.GPIO.output(self.PWR_PIN, 0)
self.GPIO.cleanup([self.RST_PIN, self.DC_PIN, self.CS_PIN, self.BUSY_PIN, self.PWR_PIN])
class SunriseX3:
# Pin definition
RST_PIN = 17
DC_PIN = 25
CS_PIN = 8
BUSY_PIN = 24
PWR_PIN = 18
Flag = 0
def __init__(self):
import spidev
import Hobot.GPIO
self.GPIO = Hobot.GPIO
self.SPI = spidev.SpiDev()
def digital_write(self, pin, value):
self.GPIO.output(pin, value)
def digital_read(self, pin):
return self.GPIO.input(pin)
def delay_ms(self, delaytime):
time.sleep(delaytime / 1000.0)
def spi_writebyte(self, data):
self.SPI.writebytes(data)
def spi_writebyte2(self, data):
# for i in range(len(data)):
# self.SPI.writebytes([data[i]])
self.SPI.xfer3(data)
def module_init(self):
if self.Flag == 0:
self.Flag = 1
self.GPIO.setmode(self.GPIO.BCM)
self.GPIO.setwarnings(False)
self.GPIO.setup(self.RST_PIN, self.GPIO.OUT)
self.GPIO.setup(self.DC_PIN, self.GPIO.OUT)
self.GPIO.setup(self.CS_PIN, self.GPIO.OUT)
self.GPIO.setup(self.PWR_PIN, self.GPIO.OUT)
self.GPIO.setup(self.BUSY_PIN, self.GPIO.IN)
self.GPIO.output(self.PWR_PIN, 1)
# SPI device, bus = 0, device = 0
self.SPI.open(2, 0)
self.SPI.max_speed_hz = 4000000
self.SPI.mode = 0b00
return 0
else:
return 0
def module_exit(self):
logger.debug("spi end")
self.SPI.close()
logger.debug("close 5V, Module enters 0 power consumption ...")
self.Flag = 0
self.GPIO.output(self.RST_PIN, 0)
self.GPIO.output(self.DC_PIN, 0)
self.GPIO.output(self.PWR_PIN, 0)
self.GPIO.cleanup([self.RST_PIN, self.DC_PIN, self.CS_PIN, self.BUSY_PIN], self.PWR_PIN)
if os.path.exists('/sys/bus/platform/drivers/gpiomem-bcm2835'):
implementation = RaspberryPi()
elif os.path.exists('/sys/bus/platform/drivers/gpio-x3'):
implementation = SunriseX3()
else:
implementation = RaspberryPi()
for func in [x for x in dir(implementation) if not x.startswith('_')]:
setattr(sys.modules[__name__], func, getattr(implementation, func))
### END OF FILE ###
stephfulton commented
@jayofelony Thanks, that fixed it!