Raspberries/mraa
Private
Public Access
2
0
Fork 0
Code Activity

JS examples: refactor for clarity and consistent style

Browse Source 
Signed-off-by: Kassandra Perch <the@nodebotani.st>
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
This commit is contained in:
Kas Perch
2017-02-23 00:57:19 -06:00
committed by Alex Tereschenko
parent 43d9f6c400
commit 075a7b1225
12 changed files with 145 additions and 127 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
examples/javascript/AioA0.js
View File

@@ -22,11 +22,13 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
console.log('MRAA Version: ' + m.getVersion()); //write the mraa version to the console
"use strict";
var analogPin0 = new m.Aio(0); //setup access analog inpuput pin 0
var analogValue = analogPin0.read(); //read the value of the analog pin
var analogValueFloat = analogPin0.readFloat(); //read the pin value as a float
const mraa = require('mraa'); //require mraa
console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the console
let analogPin0 = new mraa.Aio(0); //setup access analog inpuput pin 0
let analogValue = analogPin0.read(); //read the value of the analog pin
let analogValueFloat = analogPin0.readFloat(); //read the pin value as a float
console.log(analogValue); //write the value of the analog pin to the console
console.log(analogValueFloat.toFixed(5)); //write the value in the float format

23
examples/javascript/Blink-IO.js
View File

@@ -22,19 +22,18 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
console.log('MRAA Version: ' + m.getVersion()); //write the mraa version to the console
"use strict";
var myLed = new m.Gpio(13); //LED hooked up to digital pin 13 (or built in pin on Galileo Gen1 & Gen2)
myLed.dir(m.DIR_OUT); //set the gpio direction to output
var ledState = true; //Boolean to hold the state of Led
const mraa = require('mraa'); //require mraa
console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the console
function periodicActivity()
{
myLed.write(ledState?1:0); //if ledState is true then write a '1' (high) otherwise write a '0' (low)
ledState = !ledState; //invert the ledState
setTimeout(periodicActivity,1000); //call the indicated function after 1 second (1000 milliseconds)
let myLed = new mraa.Gpio(13); //LED hooked up to digital pin 13 (or built in pin on Galileo Gen1 & Gen2)
myLed.dir(mraa.DIR_OUT); //set the gpio direction to output
let ledState = true; //Boolean to hold the state of Led
function periodicActivity() {
myLed.write(ledState ? 1 : 0); //if ledState is true then write a '1' (high) otherwise write a '0' (low)
ledState = !ledState; //invert the ledState
}
periodicActivity(); //call the periodicActivity function
setInterval(periodicActivity, 1000); //call the periodicActivity function every second

20
examples/javascript/GPIO_DigitalRead.js
View File

@@ -22,17 +22,17 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
console.log('MRAA Version: ' + m.getVersion()); //write the mraa version to the console
"use strict";
var myDigitalPin = new m.Gpio(6); //setup digital read on pin 6
myDigitalPin.dir(m.DIR_IN); //set the gpio direction to input
const mraa = require('mraa'); //require mraa
console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the console
periodicActivity(); //call the periodicActivity function
let myDigitalPin = new mraa.Gpio(6); //setup digital read on pin 6
myDigitalPin.dir(mraa.DIR_IN); //set the gpio direction to input
function periodicActivity() //
{
var myDigitalValue = myDigitalPin.read(); //read the digital value of the pin
console.log('Gpio is ' + myDigitalValue); //write the read value out to the console
setTimeout(periodicActivity,1000); //call the indicated function after 1 second (1000 milliseconds)
function periodicActivity() {
let myDigitalValue = myDigitalPin.read(); //read the digital value of the pin
console.log('Gpio value is ' + myDigitalValue); //write the read value out to the console
}
setInterval(periodicActivity, 1000); //call the indicated function every 1 second (1000 milliseconds)

10
examples/javascript/GPIO_DigitalWrite.js
View File

@@ -22,9 +22,11 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
console.log('MRAA Version: ' + m.getVersion()); //write the mraa version to the console
"use strict";
var myDigitalPin = new m.Gpio(5); //setup digital read on pin 5
myDigitalPin.dir(m.DIR_OUT); //set the gpio direction to output
const mraa = require('mraa'); //require mraa
console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the console
let myDigitalPin = new mraa.Gpio(5); //setup digital read on pin 5
myDigitalPin.dir(mraa.DIR_OUT); //set the gpio direction to output
myDigitalPin.write(1); //set the digital pin to high (1)

31
examples/javascript/bmp85.js
View File

@@ -24,29 +24,32 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
"use strict";
x = new m.I2c(0)
x.address(0x77)
const mraa = require('mraa'); //require mraa
let i2cDevice = new mraa.I2c(0);
i2cDevice.address(0x77);
// initialise device
if (x.readReg(0xd0) != 0x55) {
console.log("error");
if (i2cDevice.readReg(0xd0) != 0x55) {
console.log("error");
}
// we want to read temperature so write 0x2e into control reg
x.writeReg(0xf4, 0x2e)
i2cDevice.writeReg(0xf4, 0x2e);
// read a 16bit reg, obviously it's uncalibrated so mostly a useless value :)
console.log(x.readWordReg(0xf6))
console.log(i2cDevice.readWordReg(0xf6));
// and we can do the same thing with the read()/write() calls if we wished
// thought I'd really not recommend it!
buf = new Buffer(2)
buf[0] = 0xf4
buf[1] = 0x2e
console.log(buf.toString('hex'))
x.write(buf)
let buf = new Buffer(2);
buf[0] = 0xf4;
buf[1] = 0x2e;
console.log(buf.toString('hex'));
i2cDevice.write(buf);
x.writeByte(0xf6)
d = x.read(2)
i2cDevice.writeByte(0xf6);
let result = i2cDevice.read(2);
console.log(result.toString('hex'));

4
examples/javascript/firmata.js
View File

@@ -22,7 +22,9 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var mraa = require('mraa');
"use strict";
const mraa = require('mraa');
console.log('MRAA Version: ' + mraa.getVersion());
// open connection to firmata

66
examples/javascript/gpio-tool.js
View File

@@ -22,12 +22,14 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var mraa = require('mraa');
"use strict";
const mraa = require('mraa');
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
input: process.stdin,
output: process.stdout
});
function printUsage() {
@@ -42,16 +44,16 @@ function getVersion() {
}
function setPin() {
var pinNumber = arguments[0];
var pinValue = arguments[1];
var pin = new mraa.Gpio(pinNumber);
let pinNumber = arguments[0];
let pinValue = arguments[1];
let pin = new mraa.Gpio(pinNumber);
pin.dir(mraa.DIR_OUT);
pin.write(pinNumber, pinValue);
}
function getPin() {
var pinNumber = arguments[0];
var pin = new mraa.Gpio(pinNumber);
let pinNumber = arguments[0];
let pin = new mraa.Gpio(pinNumber);
pin.dir(mraa.DIR_IN);
console.log('Gpio ' + pinNumber + ' = ' + pin.read());
}
@@ -61,9 +63,9 @@ function onPinLevelChange() {
}
function monitorPin() {
var pinNumber = arguments[0];
let pinNumber = arguments[0];
try {
var pin = new mraa.Gpio(pinNumber);
let pin = new mraa.Gpio(pinNumber);
pin.dir(mraa.DIR_IN);
pin.isr(mraa.EDGE_BOTH, onPinLevelChange);
rl.question('Press ENTER to stop', function(answer) {
@@ -71,37 +73,37 @@ function monitorPin() {
pin.isrExit();
});
} catch (err) {
console.log(err.message);
console.log(err.message);
}
}
const args = process.argv;
const argc = args.length;
if (argc >= 3) {
const cmd = args[2];
if (argc > 3) {
const pinNumber = parseInt(args[3]);
}
switch (args[2]) {
case "version":
getVersion();
break;
case "get":
var pinNumber = parseInt(args[3]);
getPin(pinNumber);
break;
case "set":
var pinNumber = parseInt(args[3]);
var pinValue = parseInt(args[4]);
getPin(pinNumber, pinValue);
break;
case "monitor":
var pinNumber = parseInt(args[3]);
monitorPin(pinNumber);
break;
default:
console.log("Invalid command " + args[2]);
break;
case "version":
getVersion();
break;
case "get":
getPin(pinNumber);
break;
case "set":
let pinValue = parseInt(args[4]);
getPin(pinNumber, pinValue);
break;
case "monitor":
monitorPin(pinNumber);
break;
default:
console.log("Invalid command " + args[2]);
break;
}
} else {
console.log("Command not specified");
printUsage();
}

26
examples/javascript/initio.js
View File

@@ -22,27 +22,29 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa');
"use strict";
const mraa = require('mraa');
// GPIO-PIN
m.gpioFromDesc("gpio-1");
mraa.gpioFromDesc("gpio-1");
// GPIO-RAW-RAWPIN
m.gpioFromDesc("gpio-raw-131");
mraa.gpioFromDesc("gpio-raw-131");
// AIO-PIN
m.aioFromDesc("aio-1");
mraa.aioFromDesc("aio-1");
//PWM-PIN
m.pwmFromDesc("pwm-6");
mraa.pwmFromDesc("pwm-6");
// PWM-RAW-CHIPID-PIN
m.pwmFromDesc("pwm-raw-0-1")
mraa.pwmFromDesc("pwm-raw-0-1")
// UART-INDEX: the index is the one represented internally in the uart_dev array
m.uartFromDesc("uart-0");
mraa.uartFromDesc("uart-0");
// UART-RAW-PATH
m.uartFromDesc("uart-raw-/dev/ttyS0");
mraa.uartFromDesc("uart-raw-/dev/ttyS0");
// SPI-INDEX: same as UART
m.spiFromDesc("spi-0");
mraa.spiFromDesc("spi-0");
// SPI-RAW-BUS-CS: USED to open and use /dev/spidev<BUS>.<CS>
m.spiFromDesc("spi-raw-0-1");
mraa.spiFromDesc("spi-raw-0-1");
// I2C-INDEX: same as UART
m.i2cFromDesc("i2c-0");
mraa.i2cFromDesc("i2c-0");
// I2C-RAW-BUS
m.i2cFromDesc("i2c-raw-0");
mraa.i2cFromDesc("i2c-raw-0");

16
examples/javascript/isr.js
View File

@@ -1,16 +1,18 @@
#!/usr/bin/env node
var m = require('mraa')
"use strict";
function h() {
console.log("HELLO!!!!")
const mraa = require('mraa');
function hello() {
console.log("HELLO!!!!");
}
x = new m.Gpio(14)
x.isr(m.EDGE_BOTH, h)
let pin = new mraa.Gpio(14);
pin.isr(mraa.EDGE_BOTH, hello);
setInterval(function() {
// It's important to refer to our GPIO context here,
// otherwise it will be garbage-collected
console.log("Waiting for an interrupt at GPIO pin " + x.getPin() + "...")
}, 10000)
console.log("Waiting for an interrupt at GPIO pin " + pin.getPin() + "...");
}, 10000);

18
examples/javascript/rgblcd.js
View File

@@ -22,13 +22,15 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
"use strict";
x = new m.I2c(0)
x.address(0x62)
x.writeReg(0, 0)
x.writeReg(1, 0)
const mraa = require('mraa'); //require mraa
x.writeReg(0x08, 0xAA)
x.writeReg(0x04, 255)
x.writeReg(0x02, 255)
let i2cDevice = new mraa.I2c(0);
i2cDevice.address(0x62);
i2cDevice.writeReg(0, 0);
i2cDevice.writeReg(1, 0);
i2cDevice.writeReg(0x08, 0xAA);
i2cDevice.writeReg(0x04, 255);
i2cDevice.writeReg(0x02, 255);

20
examples/javascript/spi.js
View File

@@ -24,15 +24,15 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
x = new m.Spi(0)
buf = new Buffer(4)
buf[0] = 0xf4
buf[1] = 0x2e
buf[2] = 0x3e
buf[3] = 0x4e
buf2 = x.write(buf)
console.log("Sent: " + buf.toString('hex') + ". Received: " + buf2.toString('hex'))
"use strict";
const mraa = require('mraa'); //require mraa
let spiDevice = new mraa.Spi(0);
let buf = new Buffer(4);
buf[0] = 0xf4;
buf[1] = 0x2e;
buf[2] = 0x3e;
buf[3] = 0x4e;
let buf2 = spiDevice.write(buf);
console.log("Sent: " + buf.toString('hex') + ". Received: " + buf2.toString('hex'));

26
examples/javascript/uart.js
View File

@@ -22,33 +22,35 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
console.log('MRAA Version: ' + m.getVersion());
u = new m.Uart(0)
"use strict";
const mraa = require('mraa'); //require mraa
console.log('MRAA Version: ' + mraa.getVersion());
let uart = new mraa.Uart(0);
console.log("Note: connect Rx and Tx of UART with a wire before use");
function sleep(delay) {
delay += new Date().getTime();
while (new Date() < delay) { }
delay += new Date().getTime();
while (new Date() < delay) {}
}
console.log("Set UART parameters");
u.setBaudRate(115200);
u.setMode(8, 0, 1);
u.setFlowcontrol(false, false);
uart.setBaudRate(115200);
uart.setMode(8, 0, 1);
uart.setFlowcontrol(false, false);
sleep(200);
console.log("First write-read circle:");
u.writeStr("test\n");
uart.writeStr("test\n");
sleep(200);
console.log(u.readStr(6));
console.log(uart.readStr(6));
sleep(200);
console.log("Second write-read circle:");
u.writeStr("2nd test\n");
uart.writeStr("2nd test\n");
sleep(200);
console.log(u.readStr(10));
console.log(uart.readStr(10));