avafinger
commented
4 years ago failed to initialize hardware SPI,
You have to enable spi (0 or 1) or spidev0 or spidev1 for your need. It is "disabled" by default in DTB.
Steps:
-
install dtc
sudo apt-get install device-tree-compiler -
Decompile the currently DTB file in use, find it with:
cd /boot ls -la bpi-m2-zero.dtb -
If the file is (for example, you did not specify): bpi-m2-zero-v4.dtb_5.7.10, decompile it
sudo dtc -O dts -o m2z.dts bpi-m2-zero-v4.dtb
4 . Edit the file (use jed or any other text editor) , change the spi you need (and the one that can work on M2Z)
spi@1c68000 {
compatible = "allwinner,sun8i-h3-spi";
reg = <0x1c68000 0x1000>;
interrupts = <0x0 0x41 0x4>;
clocks = <0x3 0x1e 0x3 0x52>;
clock-names = "ahb", "mod";
dmas = <0x15 0x17 0x15 0x17>;
dma-names = "rx", "tx";
pinctrl-names = "default";
pinctrl-0 = <0x16 0x17>;
resets = <0x3 0xf>;
status = "disabled"; <==== change it do "okay"
#address-cells = <0x1>;
#size-cells = <0x0>;
cs-gpios = <0xc 0x2 0x3 0x0 0xc 0x0 0x6 0x0>;
spi@0 {
compatible = "nanopi,spidev"; <==== change it to "ge,achc"
reg = <0x0>;
status = "okay";
spi-max-frequency = <0x989680>;
};
};
spi@1c69000 {
compatible = "allwinner,sun8i-h3-spi";
reg = <0x1c69000 0x1000>;
interrupts = <0x0 0x42 0x4>;
clocks = <0x3 0x1f 0x3 0x53>;
clock-names = "ahb", "mod";
dmas = <0x15 0x18 0x15 0x18>;
dma-names = "rx", "tx";
pinctrl-names = "default";
pinctrl-0 = <0x18>;
resets = <0x3 0x10>;
status = "disabled"; <==== change it do "okay"
#address-cells = <0x1>;
#size-cells = <0x0>;
spi@0 {
compatible = "nanopi,spidev"; <==== change it to "ge,achc"
reg = <0x0>;
spi-max-frequency = <0x989680>;
};
};-
after you enable the correct spi (spidev) you recompile it and make it default
sudo dtc -I dts -O dtb -o m2z.dtb m2z.dts sudo ln -sf m2z.dtb bpi-m2-zero-v4.dtb sudo reboot
djk300
I am continuing to get the Runtime error: Not running on a RPi. I am using a Raspberry pi 4B with Ubuntu Mate 20.04. I was using the same simple code on my old 3B+ and it worked fine. I have tried adding the username to the gpio group and it did not fix the issue. I have tried gpiozero and get the same error. Not sure what to do now as I read a lot of other people with the same issue but have not yet found a solution that works for me. Thanks.
code is below: import RPi.GPIO as GPIO from hx711 import HX711
set the pin numbers for the weight sensor on raspberry pi
hx = HX711(5, 6)
hx.set_reading_format("MSB", "MSB")
set calibration factor aka reference unit
hx.set_reference_unit(105) hx.reset() hx.tare() abc=input("scale is tared, press enter to start ->")
print("Tare done! Add weight now...")
begin weight count and export to google sheet
cellcounter = 2
endloop = 10 #number of times to run the code for k in range(endloop): total = 0 endrange = 10 #number of readings to average for i in range(endrange): val = hx.get_weight(5) total = val + total
set time delay between readings
hx.power_down() hx.power_up() time.sleep(0.1)
here is the error:
runfile('/home/4di/.config/spyder-py3/weightgpio.py', wdir='/home/4di/.config/spyder-py3') /usr/lib/python3/dist-packages/gpiozero/pins/pi.py:129: SPISoftwareFallback: failed to initialize hardware SPI, falling back to software (error was: failed to import spidev) warnings.warn( Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 69, in call self = cls._instances[key]
KeyError: (8,)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/gpiozero/pins/pi.py", line 71, in pin pin = self.pins[n]
KeyError: 8
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "", line 1, in runfile('/home/4di/.config/spyder-py3/weightgpio.py', wdir='/home/4di/.config/spyder-py3')
File "/usr/lib/python3/dist-packages/spyder_kernels/customize/spydercustomize.py", line 827, in runfile execfile(filename, namespace)
File "/usr/lib/python3/dist-packages/spyder_kernels/customize/spydercustomize.py", line 110, in execfile exec(compile(f.read(), filename, 'exec'), namespace)
File "/home/4di/.config/spyder-py3/weightgpio.py", line 4, in spi = HX711()
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 95, in call self = super(GPIOMeta, cls).call(*args, **kwargs)
File "/home/4di/.local/lib/python3.8/site-packages/hx711_gpiozero/init.py", line 19, in init super().init(bits, max_voltage, **spi_args)
File "/usr/lib/python3/dist-packages/gpiozero/spi_devices.py", line 128, in init super(AnalogInputDevice, self).init(shared=True, **spi_args)
File "/usr/lib/python3/dist-packages/gpiozero/spi_devices.py", line 34, in init self._spi = self.pin_factory.spi(**spi_args)
File "/usr/lib/python3/dist-packages/gpiozero/pins/pi.py", line 142, in spi return self.spi_classes[('software', shared)](self, **spi_args)
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 72, in call self = super(GPIOMeta, cls).call(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/pins/local.py", line 152, in init super(LocalPiSoftwareSPI, self).init(select_pin, active_high=False)
File "/usr/lib/python3/dist-packages/gpiozero/output_devices.py", line 47, in init super(OutputDevice, self).init(pin, pin_factory=pin_factory)
File "/usr/lib/python3/dist-packages/gpiozero/mixins.py", line 69, in init super(SourceMixin, self).init(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 375, in init pin = self.pin_factory.pin(pin)
File "/usr/lib/python3/dist-packages/gpiozero/pins/pi.py", line 73, in pin pin = self.pin_class(self, n)
File "/usr/lib/python3/dist-packages/gpiozero/pins/rpigpio.py", line 101, in init GPIO.setup(self.number, GPIO.IN, self.GPIO_PULL_UPS[self._pull])