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feat: allow other displays and devices #2

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This commit is contained in:
leukipp
2025-01-07 16:06:35 +01:00
parent 286e8c1758
commit 8d2f3da93e
1 changed files with 153 additions and 81 deletions
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src/hardware.js
+153 -81
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@@ -1,13 +1,22 @@
const os = require("os");
const fs = require("fs");
const path = require("path");
const process = require("child_process");
global.HARDWARE = global.HARDWARE || {
initialized: false,
status: "invalid",
display: {
status: null,
brightness: null,
name: null,
status: {
path: null,
value: null,
},
brightness: {
path: null,
value: null,
max: null,
},
notifiers: [],
},
};
@@ -23,20 +32,29 @@ const init = async (args) => {
return false;
}
// Check supported hardware
if (!hardwareExists()) {
console.warn("Hardware not supported");
// Check device support
if (!compatibleDevice()) {
console.warn("Device not supported");
return false;
}
// Check supported model
// Check model support
const model = getModel();
if (!model || !model.includes("Raspberry Pi 5")) {
console.warn(`Device ${model} not supported`);
if (!model || !model.includes("Raspberry Pi")) {
console.warn(`${model} not supported`);
return false;
}
console.log("\nModel:", getModel());
// Init globals
HARDWARE.display.name = getDisplayName();
HARDWARE.display.status.path = getDisplayStatusPath(HARDWARE.display.name);
HARDWARE.display.brightness.path = getDisplayBrightnessPath(HARDWARE.display.name);
HARDWARE.display.brightness.max = getDisplayBrightnessMax();
HARDWARE.initialized = true;
HARDWARE.status = "valid";
// Show device infos
console.log("\nModel:", model);
console.log("Serial Number:", getSerialNumber());
console.log("Host Name:", getHostName());
console.log("Up Time:", getUpTime());
@@ -44,12 +62,11 @@ const init = async (args) => {
console.log("Memory Usage:", getMemoryUsage());
console.log("Processor Usage:", getProcessorUsage());
console.log("Processor Temperature:", getProcessorTemperature());
console.log("Display Status:", getDisplayStatus());
console.log("Display Brightness:", getDisplayBrightness(), "\n");
// Init globals
HARDWARE.initialized = true;
HARDWARE.status = "valid";
// Show display infos
console.log("\nDisplay Name:", HARDWARE.display.name);
console.log(`Display Status [${HARDWARE.display.status.path}]:`, getDisplayStatus());
console.log(`Display Brightness [${HARDWARE.display.brightness.path}]:`, getDisplayBrightness(), "\n");
// Check for display changes
setInterval(update, 500);
@@ -64,40 +81,43 @@ const update = () => {
if (!HARDWARE.initialized) {
return;
}
const path = "/sys/class/backlight/10-0045";
// Display status has changed
const status = fs.readFileSync(`${path}/bl_power`, "utf8").trim();
if (status !== HARDWARE.display.status) {
console.log("Update Display Status:", getDisplayStatus());
HARDWARE.display.status = status;
HARDWARE.display.notifiers.forEach((notifier) => {
notifier();
});
if (HARDWARE.display.status.path !== null) {
const status = fs.readFileSync(`${HARDWARE.display.status.path}/enabled`, "utf8").trim();
if (status !== HARDWARE.display.status.value) {
console.log("Update Display Status:", getDisplayStatus());
HARDWARE.display.status.value = status;
HARDWARE.display.notifiers.forEach((notifier) => {
notifier();
});
}
}
// Display brightness has changed
const brightness = fs.readFileSync(`${path}/brightness`, "utf8").trim();
if (brightness !== HARDWARE.display.brightness) {
console.log("Update Display Brightness:", getDisplayBrightness());
HARDWARE.display.brightness = brightness;
HARDWARE.display.notifiers.forEach((notifier) => {
notifier();
});
if (HARDWARE.display.brightness.path !== null) {
const brightness = fs.readFileSync(`${HARDWARE.display.brightness.path}/brightness`, "utf8").trim();
if (brightness !== HARDWARE.display.brightness.value) {
console.log("Update Display Brightness:", getDisplayBrightness());
HARDWARE.display.brightness.value = brightness;
HARDWARE.display.notifiers.forEach((notifier) => {
notifier();
});
}
}
};
/**
* Verifies hardware compatibility by checking the presence of necessary sys files.
* Verifies device compatibility by checking the presence of necessary sys files.
*
* @returns {bool} Returns true if all files exists.
*/
const hardwareExists = () => {
const compatibleDevice = () => {
const files = [
"/sys/class/drm",
"/sys/class/backlight",
"/sys/firmware/devicetree/base/model",
"/sys/firmware/devicetree/base/serial-number",
"/sys/class/backlight/10-0045/brightness",
"/sys/class/backlight/10-0045/bl_power",
];
return files.every((file) => fs.existsSync(file));
};
@@ -117,9 +137,7 @@ const getModel = () => {
* @returns {string|null} The serial number of the Raspberry Pi or null if an error occurs.
*/
const getSerialNumber = () => {
return execSyncCommand("cat", [
"/sys/firmware/devicetree/base/serial-number",
]);
return execSyncCommand("cat", ["/sys/firmware/devicetree/base/serial-number"]);
};
/**
@@ -192,6 +210,41 @@ const getProcessorTemperature = () => {
return null;
};
/**
* Gets the primary display name using `wlopm`.
*
* @returns {string|null} The output of the command or null if an error occurs.
*/
const getDisplayName = () => {
const status = execSyncCommand("wlopm", []);
if (status !== null) {
const out = status.split("\n")[0].split(" ");
return out.shift();
}
return null;
};
/**
* Gets the current display status path using `/sys/class/drm`.
*
* @param {string} name - Primary display name.
* @returns {string|null} The display status path or null if nothing was found.
*/
const getDisplayStatusPath = (name) => {
const drm = "/sys/class/drm";
for (const card of fs.readdirSync(drm)) {
const statusFile = path.join(drm, card, "status");
if (!fs.existsSync(statusFile)) {
continue;
}
const content = fs.readFileSync(statusFile, "utf8").trim();
if (card.includes(name) && content === "connected") {
return path.join(drm, card);
}
}
return null;
};
/**
* Gets the current display power status using `wlopm`.
*
@@ -200,18 +253,10 @@ const getProcessorTemperature = () => {
const getDisplayStatus = () => {
const status = execSyncCommand("wlopm", []);
if (status !== null) {
return status.slice(status.lastIndexOf(" ") + 1).toUpperCase();
const out = status.split("\n")[0].split(" ");
return out.pop().toUpperCase();
}
return null;
/* This also works, but it's better to use `wlopm` for getter and setter methods.
const status = execSyncCommand("cat", [
"/sys/class/backlight/10-0045/bl_power",
]);
if (status !== null) {
return status === "0" ? "ON" : "OFF";
}
*/
};
/**
@@ -229,60 +274,85 @@ const setDisplayStatus = (status, callback = null) => {
if (typeof callback === "function") callback(null, "Invalid status");
return;
}
const args = status === "ON" ? ["--on", "*"] : ["--off", "*"];
const args = [`--${status.toLowerCase()}`, HARDWARE.display.name];
execAsyncCommand("wlopm", args, callback);
/* This also works, but interferes with the built-in screen blanking function.
const value = status === "ON" ? "0" : "4";
const proc = execAsyncCommand(
"tee",
["/sys/class/backlight/10-0045/bl_power"],
callback
);
proc.stdin.write(value.toString());
proc.stdin.end();
*/
};
/**
* Gets the current display brightness level using `/sys/class/backlight/10-0045/brightness`.
* Gets the current display brightness path using `/sys/class/backlight`.
*
* This function retrieves the brightness level, which is in the range of 0-31,
* and maps it to a percentage in the range of 0-100 percent.
*
* @returns {number|null} The brightness level as a percentage or null if an error occurs.
* @param {string} name - Primary display name.
* @returns {string|null} The display brightness path or null if nothing was found.
*/
const getDisplayBrightness = () => {
const brightness = execSyncCommand("cat", [
"/sys/class/backlight/10-0045/brightness",
]);
if (brightness !== null) {
return Math.round((parseInt(brightness, 10) / 31) * 100);
const getDisplayBrightnessPath = (name) => {
const backlight = "/sys/class/backlight";
for (const address of fs.readdirSync(backlight)) {
const nameFile = path.join(backlight, address, "display_name");
if (!fs.existsSync(nameFile)) {
continue;
}
const content = fs.readFileSync(nameFile, "utf8").trim();
if (content.includes(name)) {
return path.join(backlight, address);
}
}
return null;
};
/**
* Sets the display brightness level using `/sys/class/backlight/10-0045/brightness`.
* Gets the maximum display brightness value using `/sys/class/backlight/.../max_brightness`.
*
* This function takes a brightness value in the range of 1-100 percent,
* maps it to the range of 0-31, and writes it to the system.
* @returns {number|null} The brightness maximum value or null if an error occurs.
*/
const getDisplayBrightnessMax = () => {
if (!HARDWARE.display.brightness.path) {
return null;
}
const max = execSyncCommand("cat", [`${HARDWARE.display.brightness.path}/max_brightness`]);
if (max !== null) {
return parseInt(max, 10);
}
return null;
};
/**
* Gets the current display brightness level using `/sys/class/backlight/.../brightness`.
*
* @returns {number|null} The brightness level as a percentage or null if an error occurs.
*/
const getDisplayBrightness = () => {
if (!HARDWARE.display.brightness.path) {
return null;
}
const brightness = execSyncCommand("cat", [`${HARDWARE.display.brightness.path}/brightness`]);
if (brightness !== null) {
const max = HARDWARE.display.brightness.max;
return Math.round((parseInt(brightness, 10) / max) * 100);
}
return null;
};
/**
* Sets the display brightness level using `/sys/class/backlight/.../brightness`.
*
* This function takes a brightness value between 1 to 100 percent,
* maps it to the proper range and writes it to the system.
*
* @param {number} brightness - The desired brightness level (1-100).
* @param {function} callback - A callback function that receives the output or error.
*/
const setDisplayBrightness = (brightness, callback = null) => {
if (!HARDWARE.display.brightness.path) {
return;
}
if (typeof brightness !== "number" || brightness < 1 || brightness > 100) {
console.error("Brightness must be a number between 1 and 100");
if (typeof callback === "function") callback(null, "Invalid brightness");
return;
}
const value = Math.max(1, Math.min(Math.round((brightness / 100) * 31), 31));
const proc = execAsyncCommand(
"tee",
["/sys/class/backlight/10-0045/brightness"],
callback
);
const max = HARDWARE.display.brightness.max;
const value = Math.max(1, Math.min(Math.round((brightness / 100) * max), max));
const proc = execAsyncCommand("tee", [`${HARDWARE.display.brightness.path}/brightness`], callback);
proc.stdin.write(value.toString());
proc.stdin.end();
};
@@ -320,9 +390,7 @@ const rebootSystem = (callback = null) => {
*/
const execSyncCommand = (cmd, args = []) => {
try {
const output = process.execSync([cmd, ...args].join(" "), {
encoding: "utf8",
});
const output = process.execSync([cmd, ...args].join(" "), { encoding: "utf8" });
return output.trim().replace(/\0/g, "");
} catch (error) {
console.error("Execute Sync:", error.message);
@@ -380,8 +448,12 @@ module.exports = {
getMemoryUsage,
getProcessorUsage,
getProcessorTemperature,
getDisplayName,
getDisplayStatusPath,
getDisplayStatus,
setDisplayStatus,
getDisplayBrightnessPath,
getDisplayBrightnessMax,
getDisplayBrightness,
setDisplayBrightness,
shutdownSystem,