cosmeticslasas.blogg.se - Wire power configure mastercam v9

#WIRE POWER CONFIGURE MASTERCAM V9 UPDATE#
#WIRE POWER CONFIGURE MASTERCAM V9 DRIVER#
#WIRE POWER CONFIGURE MASTERCAM V9 PATCH#
#WIRE POWER CONFIGURE MASTERCAM V9 SOFTWARE#

#WIRE POWER CONFIGURE MASTERCAM V9 UPDATE#

I'm pretty sure I broke it somewhere down the line with some apt update or rpi-update or whatever I just can't recall when.

#WIRE POWER CONFIGURE MASTERCAM V9 SOFTWARE#

To anyone else with the same/similar problem: good luck I hope it's just my RPi or (one of the) sensor(s) being broken and not something software related / stupid config thingy everybody overlooks. Sensors will be binned, RPi1 will probably go collect dust as it did before my little project.

But, honestly, it was just a proof-of-concept project for fun and I've spent way to much time on it as-is. The one thing I didn't try is a single sensor. I've resoldered ("reflowed") all connections, tried the 5V pin instead of the 3.3V pin, tried pin 9 instead of 6 for GND (read that somewhere), again tried different combinations of settings but nothing works. If this workaround is successful then it will prove that I've understood the issue, and a fix should be relatively easy. My DS18B20 seems happy with or without the fancy footwork required for parasitic power, but I hope your MAX31826 will appreciate the difference.

#WIRE POWER CONFIGURE MASTERCAM V9 DRIVER#

When /etc/modules is processed the driver is loaded (the blacklist is irrelevant now), finds both the DT node and the module parameter, and hopefully has the desired effect.

DT creates the platform device node, including the GPIO pin number, but doesn't load the driver because it's blacklisted.

However, I think there is a workaround that uses a combination of DT and module parameters:Īdd dtoverlay=w1-gpio (not the -pullup variant, although it shouldn't matter)Īdd w1-gpio to /etc/modprobe.d/nf It looks as though the patches that add the Parasite Power mode, as well as being confusing, don't provide any way to enable the Parasitic Power mode from DT. So, now, any chance to have again the 1-wire in Parasite Power mode support also for 3.18 Kernel? The 1-Wire in Parasite Power mode was available from the rpi-update firmware as of 8 March 2013.

#WIRE POWER CONFIGURE MASTERCAM V9 PATCH#

The oldest Raspberry Pi Kernel did not support Parasite Power mode, but there was a patch that enabling it (see here: raspberrypi/linux#186). So, using 1-Wire in Parasite Power mode with the Raspberry Pi, we are going only to use GPIO #4 (Raspberry Pi Name GPIO 7) and GND.Ī 4.7 kohm pull-up resistor between the 3V3 (GPIO #1) and the GPIO #4 is always needed.

GND (Ground).ġ-wire in Parasite Power mode will go to use only 2 wires: the GND and the Data (GPIO #4), the power supply for the chip will be "stolen" from the Data Pin (in Parasite Power mode the Vcc Pin of the chip will be connect to GND).īefore 3.18 Kernel in Raspberry Pi, the 1-Wire can be used using 3 wires (normal) or using 2 wires (Parasite Power configuration). Instead if I disable the DT (add "device_tree=" and I remove "dtoverlay=w1-gpio-pullup,gpiopin=4,pullup=1" into "/boot/config.txt") I can correctly read temperature.ġ-Wire protocol use by default 3 wires: 1. I have also tried to add only "w1-therm" or only "w1-gpio pullup=1" from "/etc/modules" but the results is the cat w1_slave If I try to remove both "w1-gpio pullup=1" and "w1-therm" from "/etc/modules" it's impossible to read temperature because the file "w1_slave" is not available in the directory (no such file or directory). The Temperature read is always 85 cat w1_slave w1_master_driver w1_bus_master1: Family 3b for 3b.00000014fe14.17 is not registered. w1_add_master_device: set_pullup requires write_byte or touch_bit, disabling Driver for 1-wire Dallas network protocol. I'm running the latest firmware "Linux raspberrypi 3.18.3+ #742 PREEMPT Mon Jan 26 18:27: armv6l GNU/Linux", I have this line "dtoverlay=w1-gpio-pullup,gpiopin=4,pullup=1" into "/boot/config.txt" With the new Kernel 3.18 (3.18.3) and DT enabled the 1-Wire in Parasite Power configuration (1-Wire using 2 wires) does not work.