first commit

Software/Shell/Grove - I2C FM Receiver/radio.sh

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+#!/bin/bash
+
+# usage:
+# ./radio.sh radio-station-frequency
+
+# examples:
+
+# Sydney - Triple J
+# ./radio.sh 105.7
+
+# Sydney - Triple M
+# ./radio.sh 104.9
+
+# Sydney - WSFM
+# ./radio.sh 101.7
+
+# Sydney - Nova 969
+# ./radio.sh 96.9
+
+# Mute, by not passing in a frequency
+# ./radio.sh
+
+
+# The Grove I2C FM Receiver can operate in RDA5807 or TEA5767 mode
+# In simpler TEA5767 mode, the I2C address 0x60
+
+# http://www.voti.nl/docs/TEA5767.pdf
+# http://en.wikipedia.org/wiki/List_of_radio_stations_in_Australia
+
+# Connect your FM receiver to one of the I2C sockets
+# Check if the device was found
+# i2cdetect -y 1
+
+# enable I2C via the raspi-config "Advanced Options" menu
+# sudo raspi-config
+
+# make sure "i2c-dev" is in /etc/modules
+# sudo nano /etc/modules
+
+# To run i2cdetect and i2cset you will need to install the i2c-tools package
+# sudo apt-get install i2c-tools
+
+# If you want to run i2cset without sudo, you'll need to add the pi user to the i2c group
+# sudo usermod -aG i2c pi
+
+# dont forget to make the script executable
+# chmod +x radio.sh
+
+
+# TEA5767 mode I2C address
+addr=0x60
+
+freq=$@
+
+# setting of synthesizer programmable counter for search or preset
+pll=$(echo $freq | awk '{ printf "%d", 4 * ($1 * 1000000 + 225000) / 32768 }')
+
+byte1=0
+byte1=$((pll>>8)) # bits 0-5 contain the msb bits of the frequency preset
+#byte1=$((byte1|0x80)) # MUTE - left and right are muted
+#byte1=$((byte1|0x40)) # SM - search mode
+
+# mute if no frequency has been provided
+if [ ! "$freq" ]; then
+	byte1=$((byte1|0x80)) # MUTE - left and right are muted
+fi
+
+byte2=0
+byte2=$((pll&0xFF)) # bits 0-7 contain the lsb bits of the frequency preset
+
+byte3=0
+byte3=$((byte3|0x80)) # SUD - search up
+#byte3=$((byte3|0x40)) # SSL1 - search stop level high
+#byte3=$((byte3|0x20)) # SSL0 - search stop level high
+byte3=$((byte3|0x10)) # HLSI - high side injection
+#byte3=$((byte3|0x08)) # MS - mono to stereo
+#byte3=$((byte3|0x04)) # MR - mute right
+#byte3=$((byte3|0x02)) # ML - mute left
+#byte3=$((byte3|0x01)) # SWP1 - software programmable port 1
+
+byte4=0
+#byte4=$((byte4|0x80)) # SWP2 - software programmable port 2
+#byte4=$((byte4|0x40)) # STBY - standby mode
+#byte4=$((byte4|0x20)) # BL - band limited to japanese fm band, else us/europe band
+byte4=$((byte4|0x10)) # XTAL - clock 32.768kHz
+#byte4=$((byte4|0x08)) # SMUTE - soft mute
+#byte4=$((byte4|0x80)) # HCC - high cut control
+#byte4=$((byte4|0x80)) # SNC - stereo noise cancelling
+#byte4=$((byte4|0x80)) # SI - search indicator
+
+byte5=0
+#byte5=$((byte5|0x80)) # PLLREF - 6.5 MHz reference frequency for the PLL
+#byte5=$((byte5|0x40)) # DTC - de-emphasis time constant is 75us
+# the other byte5 bits are unused
+
+# send the 5 byte command
+# if you are using an old raspi replace the 1 with 0 to use the older i2c bus 0
+i2cset -y 1 $addr $byte1 $byte2 $byte3 $byte4 $byte5 i

Software/Shell/Grove - LCD RGB Backlight/lcd.sh

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+#!/bin/bash
+
+# usage:
+# ./lcd.sh
+
+# I2C addresses
+backlight=0x62
+character=0x3e
+
+# backlight registers
+mode1=0x00
+mode2=0x01
+pwm0=0x02
+pwm1=0x03
+pwm2=0x04
+ledout=0x08
+
+# character registers
+display=0x80
+letters=0x40
+
+
+# backlight
+# set to green
+
+red=0x00
+green=0xFF
+blue=0x00
+
+i2cset -y 1 $backlight $mode1 0x00   # mode 1 init, normal mode
+i2cset -y 1 $backlight $mode2 0x00   # mode 2 init
+i2cset -y 1 $backlight $pwm0 $blue   # blue
+i2cset -y 1 $backlight $pwm1 $green  # green
+i2cset -y 1 $backlight $pwm2 $red    # red
+i2cset -y 1 $backlight $ledout 0xAA  # led output state
+sleep 1
+
+# character
+# Hello World
+
+i2cset -y 1 $character $display 0x01  # clear display
+i2cset -y 1 $character $display 0x0F  # display on, block cursor
+i2cset -y 1 $character $display 0x38  # 2 lines
+i2cset -y 1 $character $letters 72    # H
+i2cset -y 1 $character $letters 101   # e
+i2cset -y 1 $character $letters 108   # l
+i2cset -y 1 $character $letters 108   # l
+i2cset -y 1 $character $letters 111   # o
+i2cset -y 1 $character $letters 32    # space
+i2cset -y 1 $character $letters 87    # W
+i2cset -y 1 $character $letters 111   # o
+i2cset -y 1 $character $letters 114   # r
+i2cset -y 1 $character $letters 108   # l
+i2cset -y 1 $character $letters 100   # d
+sleep 1
+
+
+# backlight
+# set to cyan
+
+red=0x00
+green=0xFF
+blue=0xFF
+
+i2cset -y 1 $backlight $pwm0 $blue   # blue
+i2cset -y 1 $backlight $pwm1 $green  # green
+i2cset -y 1 $backlight $pwm2 $red    # red
+sleep 1
+
+
+# character
+# Potato
+
+i2cset -y 1 $character $display 0x0E  # display on, underline cursor
+i2cset -y 1 $character $display 0xc0  # move cursor to row 2, col 0
+i2cset -y 1 $character $letters 80    # P
+i2cset -y 1 $character $letters 111   # o
+i2cset -y 1 $character $letters 116   # t
+i2cset -y 1 $character $letters 97    # a
+i2cset -y 1 $character $letters 116   # t
+i2cset -y 1 $character $letters 111   # o