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HD44780-Demo.spin
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HD44780-Demo.spin
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{
---------------------------------------------------------------------------------------------------
Filename: HD44780-Demo.spin
Description: Demo of the HD44780 LCD driver
Author: Jesse Burt
Started: Sep 8, 2021
Updated: Aug 22, 2024
Copyright (c) 2024 - See end of file for terms of use.
---------------------------------------------------------------------------------------------------
}
CON
_clkmode = cfg._clkmode
_xinfreq = cfg._xinfreq
OBJ
cfg: "boardcfg.flip"
time: "time"
ser: "com.serial.terminal.ansi" | SER_BAUD=115_200
disp: "display.lcd-alpha.hd44780" | SCL=28, SDA=29, I2C_FREQ=100_000, I2C_ADDR=%000
PUB main()
setup()
disp.clear()
disp.str(@"Testing 1 2 3")
time.sleep(2)
disp.clear()
demo_backlight()
demo_num()
PUB demo_backlight()
disp.str(@"Backlight")
repeat 10
disp.backlight_ena(0)
time.msleep(100)
disp.backlight_ena(1)
time.msleep(100)
PUB demo_num() | i
repeat i from 255 to 0
disp.pos_xy(0, 0)
disp.printf3(@"%03.3d %02.2x %08.8b", i, i, i)
time.msleep(50)
disp.clear()
repeat i from 0 to -255
disp.pos_xy(0, 0)
disp.printf3(@"%4.4d %02.2x %08.8b", i, i.byte[0], i.byte[0])
time.msleep(50)
PUB setup()
ser.start()
time.msleep(30)
ser.clear()
ser.strln(@"Serial terminal started")
if ( disp.start() )
ser.strln(@"HD44780 driver started (I2C)")
else
ser.strln(@"HD44780 driver failed to start - halting")
repeat
disp.reset()
disp.backlight_ena(1)
DAT
{
Copyright 2024 Jesse Burt
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
}