gpio

问题 We need to run a Python code which will control the GPIO of Raspberry Pi 3 from within the JavaScript. (JavaScript is listening for changes on database and when changes are made, function gets triggered and it should run the Python Code. (This code is not working, like the alert message will pop-up but the python code isn't running which otherwise should turn the LED on. What am i doing wrong?) index.html file function runPython() { $.ajax({ type: "POST", url: "/home/pi/Desktop/Web/led.py",

问题 We need to run a Python code which will control the GPIO of Raspberry Pi 3 from within the JavaScript. (JavaScript is listening for changes on database and when changes are made, function gets triggered and it should run the Python Code. (This code is not working, like the alert message will pop-up but the python code isn't running which otherwise should turn the LED on. What am i doing wrong?) index.html file function runPython() { $.ajax({ type: "POST", url: "/home/pi/Desktop/Web/led.py",

问题 We need to run a Python code which will control the GPIO of Raspberry Pi 3 from within the JavaScript. (JavaScript is listening for changes on database and when changes are made, function gets triggered and it should run the Python Code. (This code is not working, like the alert message will pop-up but the python code isn't running which otherwise should turn the LED on. What am i doing wrong?) index.html file function runPython() { $.ajax({ type: "POST", url: "/home/pi/Desktop/Web/led.py",

问题 We need to run a Python code which will control the GPIO of Raspberry Pi 3 from within the JavaScript. (JavaScript is listening for changes on database and when changes are made, function gets triggered and it should run the Python Code. (This code is not working, like the alert message will pop-up but the python code isn't running which otherwise should turn the LED on. What am i doing wrong?) index.html file function runPython() { $.ajax({ type: "POST", url: "/home/pi/Desktop/Web/led.py",

问题 We need to run a Python code which will control the GPIO of Raspberry Pi 3 from within the JavaScript. (JavaScript is listening for changes on database and when changes are made, function gets triggered and it should run the Python Code. (This code is not working, like the alert message will pop-up but the python code isn't running which otherwise should turn the LED on. What am i doing wrong?) index.html file function runPython() { $.ajax({ type: "POST", url: "/home/pi/Desktop/Web/led.py",

问题 Using the legacy sysfs GPIO under Android and Linux the first step in the process is toe export the particular GPIO pins you want to use. And when you are done with the GPIO pin to unexport it. I've been looking for an explanation of what the export command actually does however everything I've found is about the builtin bash command which has nothing to do with GPIO. Then I realized the actual command from the command line was echo 938 > /sys/class/gpio/export and /sys/class/gpio/export is a

问题 Using the legacy sysfs GPIO under Android and Linux the first step in the process is toe export the particular GPIO pins you want to use. And when you are done with the GPIO pin to unexport it. I've been looking for an explanation of what the export command actually does however everything I've found is about the builtin bash command which has nothing to do with GPIO. Then I realized the actual command from the command line was echo 938 > /sys/class/gpio/export and /sys/class/gpio/export is a

问题 Using the legacy sysfs GPIO under Android and Linux the first step in the process is toe export the particular GPIO pins you want to use. And when you are done with the GPIO pin to unexport it. I've been looking for an explanation of what the export command actually does however everything I've found is about the builtin bash command which has nothing to do with GPIO. Then I realized the actual command from the command line was echo 938 > /sys/class/gpio/export and /sys/class/gpio/export is a

问题 I am trying to understand how the Linux GPIO numbers get their values. e.g. GPIO mapping for Joule. I tried reading linux documentation on Pinctrl Subsystem and also looked at the code of GPIO driver being used in Intel Joule : https://elixir.bootlin.com/linux/latest/source/drivers/pinctrl/intel/pinctrl-broxton.c However going this way looks very platform-specific. I am looking for some generic industry standard. Please help or please direct me to some good article. 回答1: First of all, one has

问题 I am trying to understand how the Linux GPIO numbers get their values. e.g. GPIO mapping for Joule. I tried reading linux documentation on Pinctrl Subsystem and also looked at the code of GPIO driver being used in Intel Joule : https://elixir.bootlin.com/linux/latest/source/drivers/pinctrl/intel/pinctrl-broxton.c However going this way looks very platform-specific. I am looking for some generic industry standard. Please help or please direct me to some good article. 回答1: First of all, one has