galjonsfigur 6926c66b16 Polish Lua examples (#2846)
* Add missing globals from luacheck config

* Fix luacheck warnings in all lua files

* Re-enable luacheck in Travis

* Speed up Travis by using preinstalled LuaRocks

* Fix more luacheck warnings in httpserver lua module

* Fix DCC module and add appropriate definitions to luacheck config.

* Change inline comments from ignoring block to only ignore specific line

* Add Luacheck for Windows and enable it for both Windows and Linux

* Change luacheck exceptions and fix errors from 1st round of polishing

* Add retry and timeout params to wget
2020-06-09 22:26:52 +02:00

39 lines
1.0 KiB
Lua

local disp
-- setup SPI and connect display
local function init_spi_display()
-- Hardware SPI CLK = GPIO14
-- Hardware SPI MOSI = GPIO13
-- Hardware SPI MISO = GPIO12 (not used)
-- Hardware SPI /CS = GPIO15 (not used)
-- CS, D/C, and RES can be assigned freely to available GPIOs
local cs = 8 -- GPIO15, pull-down 10k to GND
local dc = 4 -- GPIO2
local res = 0 -- GPIO16
local bus = 1
spi.setup(bus, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, 8, 8)
-- we won't be using the HSPI /CS line, so disable it again
gpio.mode(8, gpio.INPUT, gpio.PULLUP)
-- initialize the matching driver for your display
-- see app/include/ucg_config.h
--disp = ucg.ili9341_18x240x320_hw_spi(bus, cs, dc, res)
disp = ucg.st7735_18x128x160_hw_spi(bus, cs, dc, res)
end
do
init_spi_display()
disp:begin(ucg.FONT_MODE_TRANSPARENT)
disp:clearScreen()
disp:setFont(ucg.font_ncenR12_tr);
disp:setColor(255, 255, 255);
disp:setColor(1, 255, 0,0);
disp:setPrintPos(0, 25)
disp:print("Hello World!")
end