Update all Display examples, and ADS1118

examples/analog_io/ads1118.rb

@@ -5,16 +5,8 @@
 require 'denko'
 
 board = Denko::Board.new(Denko::Connection::Serial.new)
-
-# Connect the ADS1118 pins to the board's default SPI pins.
-bus = Denko::SPI::Bus.new(board: board)
-
-# Or use a 2-way bit-bang SPI bus on any pins.
-# SPI_BIT_BANG_PINS   = { clock: 13, input: 12, output: 11 }
-# bus = Denko::SPI::BitBang.new(board: board, pins: SPI_BIT_BANG_PINS)
-
-# Connect chip select/enable pin of the ADS1118 to pin 9.
-ads = Denko::AnalogIO::ADS1118.new(bus: bus, pin: 9)
+bus   = Denko::SPI::Bus.new(board: board)
+ads   = Denko::AnalogIO::ADS1118.new(bus: bus, pin: 10)
 
 # Helper method so readings look nice.
 def print_reading(name, raw, voltage)
@@ -29,7 +21,7 @@ def print_reading(name, raw, voltage)
 #
 # Read the ADS1118 internal temperature sensor.
 # This always uses the 128 SPS mode, and there is no polling method for it.
-# 
+#
 temperature = ads.temperature_read
 puts "ADS1118 Temperature: #{temperature} \xC2\xB0C"
 puts

examples/display/hd44780.rb

@@ -4,11 +4,19 @@
 require 'bundler/setup'
 require 'denko'
 
+# These pins match the SainSmart LCD Keypad Shield for Arduino boards.
+RS = 8
+EN = 9
+D4 = 4
+D5 = 5
+D6 = 6
+D7 = 7
+
 board = Denko::Board.new(Denko::Connection::Serial.new)
-lcd = Denko::Display::HD44780.new  board: board,
-                                   pins: { rs: 8, enable: 9, d4: 4, d5: 5, d6: 6, d7: 7 },
-                                   cols: 16,
-                                   rows: 2
+lcd   = Denko::Display::HD44780.new  board: board,
+                                     pins: { rs: RS, enable: EN, d4: D4, d5: D5, d6: D6, d7: D7 },
+                                     cols: 16,
+                                     rows: 2
 
 # Bitmap for a custom character. 5 bits wide x 8 high.
 # Useful for generating these: https://omerk.github.io/lcdchargen/
@@ -20,7 +28,7 @@
         	0b01110,
         	0b00100,
         	0b00000 ]
-                  
+
 # Define the character in CGRAM address 2. 0-7 are usable.
 lcd.create_char(2, heart)
 

examples/display/ssd1306.rb

@@ -20,10 +20,12 @@
 
 # I2C OLED, connected to I2C SDA and SCL.
 oled = Denko::Display::SSD1306.new(bus: bus, rotate: true) # address: 0x3C is default
+# oled = Denko::Display::SH1106.new(bus: bus,rotate: true) # address: 0x3C is default
 
 # SPI OLED, connected to SPI CLK and MOSI pins.
 # select: and dc: pins must be given. reset is optional (can be pulled high instead).
-# oled = Denko::Display::SSD1306.new(bus: bus, pins: {select: 10, dc: 7, reset: 8}, rotate: true)
+# oled = Denko::Display::SSD1306.new(bus: bus, pins: { select: 10, dc: 7, reset: 8 }, rotate: true)
+# oled = Denko::Display::SH1106.new(bus: bus, pins: { select: 10, dc: 7, reset: 8}, rotate: true)
 
 # Draw some text on the OLED's canvas (a Ruby memory buffer).
 canvas = oled.canvas

examples/display/ssd1306_s2_pico.rb

@@ -10,8 +10,8 @@
 reset = Denko::DigitalIO::Output.new(board: board, pin: 18)
 reset.high
 
-bus = Denko::I2C::Bus.new(board: board, pin: :SDA)
-oled = Denko::Display::SSD1306.new(bus: bus, width: 128, height: 32)
+bus    = Denko::I2C::Bus.new(board: board, pin: :SDA)
+oled   = Denko::Display::SSD1306.new(bus: bus, width: 128, height: 32)
 canvas = oled.canvas
 
 # Draw some text on the OLED's canvas (a Ruby memory buffer).

lib/denko/spi/peripheral.rb

@@ -42,7 +42,7 @@ def spi_stop
           bus.stop(select_pin)
         end
 
-        def pre_callback_filter(message)
+        def string_to_bytes(message)
           if message.class == Array
             # Byte array coming from PiBoard.
             return message
@@ -51,6 +51,11 @@ def pre_callback_filter(message)
             return message.split(",").map { |b| b.to_i }
           end
         end
+
+        def update(message)
+          puts message
+          super(string_to_bytes(message))
+        end
       end
 
       module ChipSelectBehavior
@@ -91,11 +96,15 @@ module MultiPin
         include Behaviors::Lifecycle
 
         def select_pin
-          select.pin
+          self.select.pin
         end
 
-        after_initialize do
+        def initialize_pins(params={})
+          super(params)
           proxy_pin :select, ChipSelect, { board: bus.board, mode: :output }
+        end
+
+        after_initialize do
           select.add_callback(:peripheral_forwarder) { |data| self.update(data) }
         end
       end