not connected.
-Logic analyzer setup
---------------------
+Logic analyzer setup (hd44780-reset-init-hello.sr)
+--------------------------------------------------
The capture was taken with an ASIX Sigma2 logic analyzer, sampling 8
logic channels at a rate of 50MHz:
8 D7
-Data
-----
+hd44780-reset-init-hello.sr
+---------------------------
See https://en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller for a
list of display controller commands, and especially the 'Mode Selection'
of the display corresponds to D0-D3 of the decoder (D4-D7 of the decoder
are not connected). Words consist of 8 bits (span 2 bus cycles), and are
in big endian format.
+
+
+Logic analyzer setup (other files)
+----------------------------------
+
+The capture was taken with a Saleae Logic clone (mostly at 200kHz):
+
+ Probe HD44780
+ -------------------
+ 1 RS (selects "commands" and "display data" mode)
+ 2 E (enable, falling edge clocks data transfers)
+ 3 D4 (data lines...)
+ 4 D5
+ 5 D6
+ 6 D7
+
+
+hd44780-blink.sr
+----------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - write "hello, world!"
+ - toggle blinking every 3 seconds
+
+
+hd44780-cursor.sr
+-----------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - write "hello, world!"
+ - toggle cursor every 0.5 seconds
+
+
+hd44780-customcharacter.sr
+--------------------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - define special characters: heart, smiling face, unhappy face, stickman
+ with arms low, stickman with arms up
+ - write "I {heart} Arduino {smiling face}" and " {stickman with arms low}"
+ - toggle second line between " {stickman with arms low}" and
+ " {stickman with arms up}" about (!) every 0.9 seconds
+
+
+hd44780-font.sr
+---------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - define special characters: heart, smiling face, unhappy face, stickman
+ with arms low, stickman with arms up
+ - every about 250ms a set of 2 * 16 characters are written to the display,
+ starting at 0
+
+
+hd44780-power.sr
+----------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - write "hello, world!"
+ - toggle display power every 0.5 seconds
+
+
+hd44780-shift.sr
+----------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - write "hello, world!"
+ - repeats:
+ - shift text to the left until it is outside the view
+ - shift text to the right until it is outside the view
+ - shift text to the left until it is where it was before shifting
+
+
+hd44780-shiftcursor_204.sr
+--------------------------
+
+This is what the decoded data should look like:
+
+ - initialization
+ - write "hello, world!"
+ - using cursor shifts it replaces the ! by ?, w by W and h by H, so it is
+ "Hello, World?" in the end
+
+
+hd44780-textdirection.sr
+------------------------
+
+Arduino firmware based on the LiquidCrystal example Arduino Sketch.
+
+This is what the decoded data should look like:
+
+ - initialization
+ - write "abcdefghijklm"
+ - continue to the left until "s"
+ - continue to the right until "z"
projects / sigrok-dumps.git / commitdiff