267 lines
7.5 KiB
Lua
267 lines
7.5 KiB
Lua
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-- ***************************************************************************
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-- Graphics Test
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--
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-- This script executes several features of u8glib to test their Lua bindings.
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--
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-- Note: It is prepared for SSD1306-based displays. Select your connectivity
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-- type by calling either init_i2c_display() or init_spi_display() at
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-- the bottom of this file.
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--
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-- ***************************************************************************
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-- display object
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local disp
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local draw_state, loop_tmr = 0, tmr.create()
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-- setup I2c and connect display
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local function init_i2c_display()
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-- SDA and SCL can be assigned freely to available GPIOs
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local sda = 5 -- GPIO14
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local scl = 6 -- GPIO12
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local sla = 0x3c
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i2c.setup(0, sda, scl, i2c.SLOW)
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disp = u8g2.ssd1306_i2c_128x64_noname(0, sla)
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end
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-- setup SPI and connect display
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local function init_spi_display() -- luacheck: no unused
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-- Hardware SPI CLK = GPIO14
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-- Hardware SPI MOSI = GPIO13
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-- Hardware SPI MISO = GPIO12 (not used)
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-- Hardware SPI /CS = GPIO15 (not used)
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-- CS, D/C, and RES can be assigned freely to available GPIOs
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local cs = 8 -- GPIO15, pull-down 10k to GND
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local dc = 4 -- GPIO2
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local res = 0 -- GPIO16
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spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, 8, 8)
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-- we won't be using the HSPI /CS line, so disable it again
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gpio.mode(8, gpio.INPUT, gpio.PULLUP)
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disp = u8g2.ssd1306_128x64_noname(1, cs, dc, res)
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end
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local function u8g2_prepare()
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disp:setFont(u8g2.font_6x10_tf)
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disp:setFontRefHeightExtendedText()
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disp:setDrawColor(1)
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disp:setFontPosTop()
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disp:setFontDirection(0)
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end
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local function u8g2_box_frame(a)
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disp:drawStr( 0, 0, "drawBox")
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disp:drawBox(5,10,20,10)
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disp:drawBox(10+a,15,30,7)
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disp:drawStr( 0, 30, "drawFrame")
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disp:drawFrame(5,10+30,20,10)
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disp:drawFrame(10+a,15+30,30,7)
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end
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local function u8g2_disc_circle(a)
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disp:drawStr( 0, 0, "drawDisc")
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disp:drawDisc(10,18,9)
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disp:drawDisc(24+a,16,7)
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disp:drawStr( 0, 30, "drawCircle")
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disp:drawCircle(10,18+30,9)
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disp:drawCircle(24+a,16+30,7)
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end
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local function u8g2_r_frame(a)
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disp:drawStr( 0, 0, "drawRFrame/Box")
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disp:drawRFrame(5, 10,40,30, a+1)
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disp:drawRBox(50, 10,25,40, a+1)
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end
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local function u8g2_string(a)
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disp:setFontDirection(0)
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disp:drawStr(30+a,31, " 0")
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disp:setFontDirection(1)
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disp:drawStr(30,31+a, " 90")
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disp:setFontDirection(2)
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disp:drawStr(30-a,31, " 180")
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disp:setFontDirection(3)
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disp:drawStr(30,31-a, " 270")
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end
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local function u8g2_line(a)
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disp:drawStr( 0, 0, "drawLine")
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disp:drawLine(7+a, 10, 40, 55)
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disp:drawLine(7+a*2, 10, 60, 55)
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disp:drawLine(7+a*3, 10, 80, 55)
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disp:drawLine(7+a*4, 10, 100, 55)
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end
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local function u8g2_triangle(a)
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local offset = a
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disp:drawStr( 0, 0, "drawTriangle")
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disp:drawTriangle(14,7, 45,30, 10,40)
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disp:drawTriangle(14+offset,7-offset, 45+offset,30-offset, 57+offset,10-offset)
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disp:drawTriangle(57+offset*2,10, 45+offset*2,30, 86+offset*2,53)
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disp:drawTriangle(10+offset,40+offset, 45+offset,30+offset, 86+offset,53+offset)
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end
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local function u8g2_ascii_1()
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disp:drawStr( 0, 0, "ASCII page 1")
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for y = 0, 5 do
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for x = 0, 15 do
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disp:drawStr(x*7, y*10+10, string.char(y*16 + x + 32))
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end
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end
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end
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local function u8g2_ascii_2()
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disp:drawStr( 0, 0, "ASCII page 2")
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for y = 0, 5 do
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for x = 0, 15 do
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disp:drawStr(x*7, y*10+10, string.char(y*16 + x + 160))
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end
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end
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end
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local function u8g2_extra_page(a)
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disp:drawStr( 0, 0, "Unicode")
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disp:setFont(u8g2.font_unifont_t_symbols)
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disp:setFontPosTop()
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disp:drawUTF8(0, 24, "☀ ☁")
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if a <= 3 then
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disp:drawUTF8(a*3, 36, "☂")
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else
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disp:drawUTF8(a*3, 36, "☔")
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end
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end
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local cross_width = 24
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local cross_height = 24
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local cross_bits = string.char(
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0x00, 0x18, 0x00, 0x00, 0x24, 0x00, 0x00, 0x24, 0x00, 0x00, 0x42, 0x00,
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0x00, 0x42, 0x00, 0x00, 0x42, 0x00, 0x00, 0x81, 0x00, 0x00, 0x81, 0x00,
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0xC0, 0x00, 0x03, 0x38, 0x3C, 0x1C, 0x06, 0x42, 0x60, 0x01, 0x42, 0x80,
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0x01, 0x42, 0x80, 0x06, 0x42, 0x60, 0x38, 0x3C, 0x1C, 0xC0, 0x00, 0x03,
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0x00, 0x81, 0x00, 0x00, 0x81, 0x00, 0x00, 0x42, 0x00, 0x00, 0x42, 0x00,
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0x00, 0x42, 0x00, 0x00, 0x24, 0x00, 0x00, 0x24, 0x00, 0x00, 0x18, 0x00)
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-- luacheck: push no unused
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local cross_fill_width = 24
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local cross_fill_height = 24
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local cross_fill_bits = string.char(
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x18, 0x64, 0x00, 0x26,
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0x84, 0x00, 0x21, 0x08, 0x81, 0x10, 0x08, 0x42, 0x10, 0x10, 0x3C, 0x08,
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0x20, 0x00, 0x04, 0x40, 0x00, 0x02, 0x80, 0x00, 0x01, 0x80, 0x18, 0x01,
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0x80, 0x18, 0x01, 0x80, 0x00, 0x01, 0x40, 0x00, 0x02, 0x20, 0x00, 0x04,
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0x10, 0x3C, 0x08, 0x08, 0x42, 0x10, 0x08, 0x81, 0x10, 0x84, 0x00, 0x21,
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0x64, 0x00, 0x26, 0x18, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
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-- luacheck: pop
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local cross_block_width = 14
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local cross_block_height = 14
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local cross_block_bits = string.char(
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0xFF, 0x3F, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20,
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0xC1, 0x20, 0xC1, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20,
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0x01, 0x20, 0xFF, 0x3F)
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local function u8g2_bitmap_overlay(a)
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local frame_size = 28
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disp:drawStr(0, 0, "Bitmap overlay")
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disp:drawStr(0, frame_size + 12, "Solid / transparent")
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disp:setBitmapMode(0) -- solid
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disp:drawFrame(0, 10, frame_size, frame_size)
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disp:drawXBM(2, 12, cross_width, cross_height, cross_bits)
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if bit.band(a, 4) > 0 then
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disp:drawXBM(7, 17, cross_block_width, cross_block_height, cross_block_bits)
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end
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disp:setBitmapMode(1) -- transparent
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disp:drawFrame(frame_size + 5, 10, frame_size, frame_size)
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disp:drawXBM(frame_size + 7, 12, cross_width, cross_height, cross_bits)
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if bit.band(a, 4) then
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disp:drawXBM(frame_size + 12, 17, cross_block_width, cross_block_height, cross_block_bits)
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end
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end
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local function u8g2_bitmap_modes(transparent)
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local frame_size = 24
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disp:drawBox(0, frame_size * 0.5, frame_size * 5, frame_size)
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disp:drawStr(frame_size * 0.5, 50, "Black")
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disp:drawStr(frame_size * 2, 50, "White")
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disp:drawStr(frame_size * 3.5, 50, "XOR")
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if transparent == 0 then
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disp:setBitmapMode(0) -- solid
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disp:drawStr(0, 0, "Solid bitmap")
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else
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disp:setBitmapMode(1) -- transparent
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disp:drawStr(0, 0, "Transparent bitmap")
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end
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disp:setDrawColor(0) -- Black
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disp:drawXBM(frame_size * 0.5, 24, cross_width, cross_height, cross_bits)
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disp:setDrawColor(1) -- White
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disp:drawXBM(frame_size * 2, 24, cross_width, cross_height, cross_bits)
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disp:setDrawColor(2) -- XOR
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disp:drawXBM(frame_size * 3.5, 24, cross_width, cross_height, cross_bits)
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end
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local function draw()
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u8g2_prepare()
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local d3 = bit.rshift(draw_state, 3)
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local d7 = bit.band(draw_state, 7)
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if d3 == 0 then
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u8g2_box_frame(d7)
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elseif d3 == 1 then
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u8g2_disc_circle(d7)
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elseif d3 == 2 then
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u8g2_r_frame(d7)
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elseif d3 == 3 then
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u8g2_string(d7)
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elseif d3 == 4 then
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u8g2_line(d7)
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elseif d3 == 5 then
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u8g2_triangle(d7)
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elseif d3 == 6 then
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u8g2_ascii_1()
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elseif d3 == 7 then
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u8g2_ascii_2()
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elseif d3 == 8 then
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u8g2_extra_page(d7)
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elseif d3 == 9 then
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u8g2_bitmap_modes(0)
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elseif d3 == 10 then
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u8g2_bitmap_modes(1)
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elseif d3 == 11 then
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u8g2_bitmap_overlay(d7)
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end
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end
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local function loop()
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-- picture loop
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disp:clearBuffer()
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draw()
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disp:sendBuffer()
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-- increase the state
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draw_state = draw_state + 1
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if draw_state >= 12*8 then
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draw_state = 0
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end
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-- delay between each frame
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loop_tmr:start()
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end
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do
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loop_tmr:register(100, tmr.ALARM_SEMI, loop)
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init_i2c_display()
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--init_spi_display()
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print("--- Starting Graphics Test ---")
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loop_tmr:start()
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end
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