| .btn-success2 | |
| { | |
| display: inline-block; | |
| height: 36px; | |
| max-width: 100%; | |
| overflow: hidden; | |
| padding: 0 15px; | |
| background-color: #c45e12; | |
| border: none; | |
| border-radius: 3px; |
| #!/bin/bash | |
| ############################################################################### | |
| # ALLOW-SSH SCRIPT # | |
| # Author: Mikael Levén # | |
| ############################################################################### | |
| # What this script basically does: # | |
| # 1. Reads your SSH key # | |
| # 2. Logins in to the remote server # | |
| # 3. Creates a new user using your current username # |
This is a simple script that reads all eight analog channels of an MCP3008 each second and outputs the result to the console.
I created this script to ease debugging of the MCP3008 ADC connected to my Raspberry Pi.
If you need to troubleshoot the SPI connection in itself you can check out my guide how to test SPI through the loopback "debug mode" https://mikaelleven.wordpress.com/2015/12/10/troubleshooting-spi-on-raspberry-pi-nodejs/.
| var rpio = require('rpio'); | |
| rpio.spiBegin(); | |
| //rpio.spiChipSelect(0); /* Chip select: use CE0 (default) */ | |
| //rpio.spiSetCSPolarity(0, rpio.LOW) /* Commonly chip enable (CE) pins are active low, and this is the default. */ | |
| //rpio.spiSetClockDivider(256) /* MCP3008 max is ~1MHz, 256 == 0.98MHz */ | |
| //rpio.spiSetDataMode(0); | |
| // Prepare TX buffer [trigger byte = 0x01] [channel 0 = 0x80 (128)] [placeholder = 0x01] | |
| var sendBuffer = new Buffer([0x01, (8 + 0 << 4), 0x01]); |
| var rpio = require('rpio'); | |
| var rxBuffer = rpio.spiTransfer(new Buffer('HELLOSPI'), 8); | |
| for (var i = 0; i <= 7; i++) { | |
| process.stdout.write(String.fromCharCode(rxBuffer[i]) + (i == 7 ? '\n' : ' ')); | |
| }; |
A Pen by Mikael Levén on CodePen.