SHA2017 Wiki - User contributions [en]

Projects:Badge/MicroPython

2017-08-04T20:59:18Z

Pim: /* import badge */ Added easier way to generate a bytestring for the LEDs

{{Badgemenu}}
== MicroPython ==
===WIP===

Currently a fast moving target, documentation should be up-to-date though . .

Connect to your badge with your favourite serial terminal (e.g. `picocom /dev/ttyUSB0 -b115200`) for a REPL, or start the [[Projects:Badge/Emulator|emulator]].

You can use [[Projects:Badge/ampy|ampy]] or [[Projects:Badge/mpfshell|mpfshell]] to connect to your badge too.

To be able to start a REPL you need the clean_repl egg from the hatchery: https://badge.sha2017.org/projects/clean_repl . This will restart the badge, starts nothing and makes it possible to use the REPL.

==help()==

This should get you started hacking right away.

==import esp==

This module hosts some of the low-level ESP32 features.

<nowiki>import esp</nowiki>

<nowiki>esp.rtc_get_reset_reason(cpu)</nowiki>
Where CPU is 0 or 1, other values for CPU always return 0.

Returns the [http://esp32.info/docs/esp_idf/html/db/dc1/group__rtc__apis.html#ga826b88529aef76135636c06d408513aa reset reason] of last reset event.

<nowiki>esp.start_sleeping(miliseconds)</nowiki>
Put the processors to sleep for the given amount of time . .

Reading and writing of RTC memory '''currently doesn't keep contents over deep-sleep!'''

<nowiki>esp.rtcmem_write(offset, value)</nowiki>
Sets value at offset.

<nowiki>esp.rtcmem_read(offset)</nowiki>
Returns value stored at offset.

<nowiki>esp.rtcmem_write_string(string, offset = 2)</nowiki>
Sets string value at optional offset.

<nowiki>esp.rtcmem_read_string(offset = 2)</nowiki>
Returns string value stored at optional offset.

NB: To set a program for boot run, put in the name at offset two and make sure the values of offset 0 and 1 are not each others inverse ;)

==import badge==

The first thing you would want to do is get the display working, this is currently done by the <code>boot.py</code> script.

<nowiki>import badge
badge.init()</nowiki>
Initialise all badge peripherals, this is probably the way you want to start your app.

<nowiki>badge.eink_init()</nowiki>
Just init the screen.

<nowiki>badge.eink_busy()</nowiki>
Returns a <code>boolean</code> value to indicate eink is currently being flushed.

<nowiki>badge.eink_busy_wait()</nowiki>
Waits for the eink to be flushed, handy to use before you deepsleep.

<nowiki>badge.power_init()</nowiki>
Initialise power sensing and related pin states.

<nowiki>badge.battery_charge_status()</nowiki>
Returns a boolean, true for charging, false for not charging.

<nowiki>badge.battery_volt_sense()</nowiki>
Returns a value somewhat representing the battery voltage in milivolts ('''needs calibration)'''!

<nowiki>badge.usb_volt_sense()</nowiki>
Returns a value somewhat representing the USB voltage in milivolts ('''needs calibration)'''!

<nowiki>badge.leds_init()</nowiki>
Initialise power to the LEDs and setup the SPI bus.

<nowiki>badge.leds_enable()</nowiki>
Initialise power to the LEDs (automagically done by <code>badge.leds.init()</code>.

<nowiki>badge.leds_disable()</nowiki>
Disable power to the LEDs.

<nowiki>badge.leds_send_data(grbw_values, length)</nowiki>
Stream a given length GRBW values to the LEDs over the SPI bus.

Length should probably be 24 (4 bytes, 6 LEDs) . .

A bytestring can be generated from a list by using something like: bytes([255, 0, 0, 100, 255, 0, 0, 100, 255, 0, 0, 100, 255, 0, 0, 100, 255, 0, 0, 100, 255, 0, 0, 100])

<nowiki>badge.vibrator_init()</nowiki>
Setup the vibrator driver.

<nowiki>badge.vibrator_activate(pattern)</nowiki>
Send some interesting buzz patterns to the vibrator. .

<nowiki>badge.nvs_get_str(namespace, key, default)</nowiki>
Return a string from Non Volatile Storage under namespace, key fall back to default if None.

<nowiki>badge.nvs_set_str(namespace, key, value)</nowiki>
Write a string value to Non Volatile Storage under namespace, key.

<nowiki>badge.nvs_get_uint8(namespace, key, default)</nowiki>
Return an unsigned 8 bit value from Non Volatile Storage under namespace, key fall back to default if None.

<nowiki>badge.nvs_set_uint8(namespace, key, value)</nowiki>
Write an unsigned 8 bit value to Non Volatile Storage under namespace, key.

<nowiki>badge.nvs_get_uint16(namespace, key, default)</nowiki>
Return an unsigned 16 bit value from Non Volatile Storage under namespace, key fall back to default if None.

<nowiki>badge.nvs_set_uint16(namespace, key, value)</nowiki>
Write an unsigned 16 bit value to Non Volatile Storage under namespace, key.

More about the [[Projects:Badge/Splash#NVS_settings|Non Volatile Storage namespaces and values]].

==import wifi==

<nowiki>wifi.init()</nowiki>
Connect to the wifi, using NVS badge, wifi.ssid and badge, wifi.password data.

To wait for wifi connection, try:
<nowiki>while not wifi.sta_if.isconnected():
time.sleep(0.1)
pass</nowiki>

==import ugfx==

<nowiki>import ugfx

ugfx.init()</nowiki>

Initialises the [https://ugfx.io/ uGFX] modules for use.

In case you want to unload the ugfx library to clear up memory or something, you can use <code>ugfx.deinit()</code>

===Flush===

Since this is a ultra low power bi-stable display, you'll need to flush your buffer to the screen!
<nowiki>ugfx.flush()</nowiki>

You can select a different way the E-Ink display updates.
<nowiki>ugfx.set_lut(lut)</nowiki>
Where the <code>lut</code> is one of the defined [[Projects:Badge/MicroPython#Constants|constants]] . .

===Primitives===

<nowiki>ugfx.clear(colour)</nowiki>
For colours, see [https://wiki.sha2017.org/w/Projects:Badge/MicroPython#Constants constants].

<nowiki>ugfx.fonts_list()</nowiki>
Gives you a list of usable [https://wiki.sha2017.org/w/Projects:Badge/MicroPython#Constants fonts].

<nowiki>ugfx.fonts_dump(name)</nowiki>
Dump the contents of the given font, you can write this to flash or use it directly.

<nowiki>ugfx.fonts_load(dump)</nowiki>
Import the fiven font data from a dump to be used with ugfx.

<nowiki>ugfx.get_char_width(char, font)</nowiki>
Returns the with of a given character, font combination in pixels.

<nowiki>ugfx.get_string_width(string, font)</nowiki>
Returns the with of a given string, font combination in pixels.

<nowiki>ugfx.char(x, y, char, font, colour)</nowiki>
Draws the given character at the position `(x, y)` using the given font and colour.

<nowiki>ugfx.string(x, y, string, font, colour)</nowiki>
Draws the given string of text at the position `(x, y)` using the given font and colour.

<nowiki>ugfx.string_box(x, y, a, b, str, font, colour, justify)</nowiki>
Draws the given text in a box at position `(x, y)` with lengths a,b using the given font, colour and [https://wiki.sha2017.org/w/Projects:Badge/MicroPython#Constants justification].

<nowiki>ugfx.pixel(x, y, colour)</nowiki>
Draws a pixel at (x,y) using the given colour.

<nowiki>ugfx.line(x1, y1, x2, y2, colour)</nowiki>
Draws a line from (x1,y1) to (x2,y2) using the given colour.

<nowiki>ugfx.box(x, y, a, b, colour)</nowiki>
Draws a box from (x,y), with lengths a,b, using the given colour.

<nowiki>ugfx.rounded_box(x, y, a, b, radius, colour)</nowiki>
Draws a box from (x,y), with lengths a,b, rounded corners with radius r, using the given colour.

<nowiki>ugfx.fill_rounded_box(x, y, a, b, radius, colour)</nowiki>
Draw a box from (x,y), with lengths a,b, rounded corners with radius r, using the given colour.

<nowiki>ugfx.area(x, y, a, b, colour)</nowiki>
Fill area from (x,y), with lengths a,b, using the given colour.

<nowiki>ugfx.thickline(x1, y1, x2, y2, colour, width, round)</nowiki>
Draw a line with a given thickness from (x1,y1) to (x2,y2) using the given colour, with an option to round the ends.

<nowiki>ugfx.circle(x, y, r, colour)</nowiki>
Draw a circle having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.fill_circle(x, y, r, colour)</nowiki>
Fill a circle having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.ellipse(x, y, a, b, colour)</nowiki>
Draw an ellipse having a centre point at (x,y), lengths a,b, using the given colour.

<nowiki>ugfx.fill_ellipse(x,y, a, b, colour)</nowiki>
Fill an ellipse having a centre point at (x,y), lengths a,b, using the given colour.

<nowiki>ugfx.arc(x, y, r, angle1, angle2, colour)</nowiki>
Draw an arc having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.fill_arc(x, y, r, angle1, angle2, colour)</nowiki>
Fill an arc having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.polygon(x, y, array, colour)</nowiki>
Draw a polygon starting at (x,y), using the array of points, using the given colour.

<nowiki>ugfx.fill_polygon(x, y, array, colour)</nowiki>
Fill a polygon starting at (x,y), using the array of points, using the given colour.

<nowiki>ugfx.ugfx_demo("Hacking")</nowiki>
Expects a string, displays the Still Hacking Anyway sticker 😉

===Input===

<nowiki>ugfx.input_init()</nowiki>
Needs <code>badge.init()</code> and <code>ugfx.init()</code> to have ran before it.

<nowiki>ugfx.input_attach(button, callback)</nowiki>
The callback has one boolean argument, pressed.

<nowiki>ugfx.input_attach(ugfx.JOY_UP, lambda pressed: print(pressed))</nowiki>
This example attaches a simple print function to the UP button, showing True for press and False for release.

===Constants===

Colours:
<nowiki>ugfx.BLACK
ugfx.WHITE</nowiki>

Justification:
<nowiki>ugfx.justifyLeft
ugfx.justifyCenter
ugfx.justifyRight</nowiki>

Inputs:
<nowiki>ugfx.JOY_UP
ugfx.JOY_DOWN
ugfx.JOY_LEFT
ugfx.JOY_RIGHT
ugfx.BTN_A
ugfx.BTN_B
ugfx.BTN_SELECT
ugfx.BTN_START
ugfx.BTN_FLASH</nowiki>

E-Ink [[Projects:Badge/Documentation/E-Ink#Look_Up_Table_.28LUT.29|LUT]]:
<nowiki>ugfx.LUT_FULL
ugfx.LUT_NORMAL
ugfx.LUT_FASTER
ugfx.LUT_FASTEST
ugfx.GREYSCALE</nowiki>

GREYSCALE is technically not a lut but a special rendering mode.

===Fonts===
* Roboto_Regular12
* Roboto_Regular18
* Roboto_Regular22
* Roboto_Black22
* Roboto_BlackItalic24
* PermanentMarker22
* PermanentMarker36
* pixelade13
* DejaVuSans20
* weather42

===Have Fun!!===

Let's get started!!
<nowiki>import badge
import ugfx

badge.init()
ugfx.init()

ugfx.clear(ugfx.BLACK)

ugfx.fill_circle(60, 60, 50, ugfx.WHITE);
ugfx.fill_circle(60, 60, 40, ugfx.BLACK);
ugfx.fill_circle(60, 60, 30, ugfx.WHITE);
ugfx.fill_circle(60, 60, 20, ugfx.BLACK);
ugfx.fill_circle(60, 60, 10, ugfx.WHITE);

ugfx.thickline(1,1,100,100,ugfx.WHITE,10,5)
ugfx.box(30,30,50,50,ugfx.WHITE)

ugfx.string(150,25,"STILL","Roboto_BlackItalic24",ugfx.WHITE)
ugfx.string(130,50,"Hacking","PermanentMarker22",ugfx.WHITE)
len = ugfx.get_string_width("Hacking","PermanentMarker22")
ugfx.line(130, 72, 144 + len, 72, ugfx.WHITE)
ugfx.line(140 + len, 52, 140 + len, 70, ugfx.WHITE)
ugfx.string(140,75,"Anyway","Roboto_BlackItalic24",ugfx.WHITE)

ugfx.flush()

def render(text, pushed):
if(pushed):
ugfx.string(100,10,text,"PermanentMarker22",ugfx.WHITE)
else:
ugfx.string(100,10,text,"PermanentMarker22",ugfx.BLACK)
ugfx.flush()

ugfx.input_init()
ugfx.input_attach(ugfx.JOY_UP, lambda pressed: render('UP', pressed))
ugfx.input_attach(ugfx.JOY_DOWN, lambda pressed: render('DOWN', pressed))
ugfx.input_attach(ugfx.JOY_LEFT, lambda pressed: render('LEFT', pressed))
ugfx.input_attach(ugfx.JOY_RIGHT, lambda pressed: render('RIGHT', pressed))
ugfx.input_attach(ugfx.BTN_A, lambda pressed: render('A', pressed))
ugfx.input_attach(ugfx.BTN_B, lambda pressed: render('B', pressed))
ugfx.input_attach(ugfx.BTN_START, lambda pressed: render('Start', pressed))
ugfx.input_attach(ugfx.BTN_SELECT, lambda pressed: render('Select', pressed))

while True:
pass
</nowiki>

Projects:Badge/MicroPython

2017-08-04T20:21:16Z

Pim: Added clean_repl, per advice Sebastius

{{Badgemenu}}
== MicroPython ==
===WIP===

Currently a fast moving target, documentation should be up-to-date though . .

Connect to your badge with your favourite serial terminal (e.g. `picocom /dev/ttyUSB0 -b115200`) for a REPL, or start the [[Projects:Badge/Emulator|emulator]].

You can use [[Projects:Badge/ampy|ampy]] or [[Projects:Badge/mpfshell|mpfshell]] to connect to your badge too.

To be able to start a REPL you need the clean_repl egg from the hatchery: https://badge.sha2017.org/projects/clean_repl . This will restart the badge, starts nothing and makes it possible to use the REPL.

==help()==

This should get you started hacking right away.

==import esp==

This module hosts some of the low-level ESP32 features.

<nowiki>import esp</nowiki>

<nowiki>esp.rtc_get_reset_reason(cpu)</nowiki>
Where CPU is 0 or 1, other values for CPU always return 0.

Returns the [http://esp32.info/docs/esp_idf/html/db/dc1/group__rtc__apis.html#ga826b88529aef76135636c06d408513aa reset reason] of last reset event.

<nowiki>esp.start_sleeping(miliseconds)</nowiki>
Put the processors to sleep for the given amount of time . .

Reading and writing of RTC memory '''currently doesn't keep contents over deep-sleep!'''

<nowiki>esp.rtcmem_write(offset, value)</nowiki>
Sets value at offset.

<nowiki>esp.rtcmem_read(offset)</nowiki>
Returns value stored at offset.

<nowiki>esp.rtcmem_write_string(string, offset = 2)</nowiki>
Sets string value at optional offset.

<nowiki>esp.rtcmem_read_string(offset = 2)</nowiki>
Returns string value stored at optional offset.

NB: To set a program for boot run, put in the name at offset two and make sure the values of offset 0 and 1 are not each others inverse ;)

==import badge==

The first thing you would want to do is get the display working, this is currently done by the <code>boot.py</code> script.

<nowiki>import badge
badge.init()</nowiki>
Initialise all badge peripherals, this is probably the way you want to start your app.

<nowiki>badge.eink_init()</nowiki>
Just init the screen.

<nowiki>badge.eink_busy()</nowiki>
Returns a <code>boolean</code> value to indicate eink is currently being flushed.

<nowiki>badge.eink_busy_wait()</nowiki>
Waits for the eink to be flushed, handy to use before you deepsleep.

<nowiki>badge.power_init()</nowiki>
Initialise power sensing and related pin states.

<nowiki>badge.battery_charge_status()</nowiki>
Returns a boolean, true for charging, false for not charging.

<nowiki>badge.battery_volt_sense()</nowiki>
Returns a value somewhat representing the battery voltage in milivolts ('''needs calibration)'''!

<nowiki>badge.usb_volt_sense()</nowiki>
Returns a value somewhat representing the USB voltage in milivolts ('''needs calibration)'''!

<nowiki>badge.leds_init()</nowiki>
Initialise power to the LEDs and setup the SPI bus.

<nowiki>badge.leds_enable()</nowiki>
Initialise power to the LEDs (automagically done by <code>badge.leds.init()</code>.

<nowiki>badge.leds_disable()</nowiki>
Disable power to the LEDs.

<nowiki>badge.leds_send_data(grbw_values, length)</nowiki>
Stream a given length GRBW values to the LEDs over the SPI bus.

Length should probably be 24 (4 bytes, 6 LEDs) . .

<nowiki>badge.vibrator_init()</nowiki>
Setup the vibrator driver.

<nowiki>badge.vibrator_activate(pattern)</nowiki>
Send some interesting buzz patterns to the vibrator. .

<nowiki>badge.nvs_get_str(namespace, key, default)</nowiki>
Return a string from Non Volatile Storage under namespace, key fall back to default if None.

<nowiki>badge.nvs_set_str(namespace, key, value)</nowiki>
Write a string value to Non Volatile Storage under namespace, key.

<nowiki>badge.nvs_get_uint8(namespace, key, default)</nowiki>
Return an unsigned 8 bit value from Non Volatile Storage under namespace, key fall back to default if None.

<nowiki>badge.nvs_set_uint8(namespace, key, value)</nowiki>
Write an unsigned 8 bit value to Non Volatile Storage under namespace, key.

<nowiki>badge.nvs_get_uint16(namespace, key, default)</nowiki>
Return an unsigned 16 bit value from Non Volatile Storage under namespace, key fall back to default if None.

<nowiki>badge.nvs_set_uint16(namespace, key, value)</nowiki>
Write an unsigned 16 bit value to Non Volatile Storage under namespace, key.

More about the [[Projects:Badge/Splash#NVS_settings|Non Volatile Storage namespaces and values]].

==import wifi==

<nowiki>wifi.init()</nowiki>
Connect to the wifi, using NVS badge, wifi.ssid and badge, wifi.password data.

To wait for wifi connection, try:
<nowiki>while not wifi.sta_if.isconnected():
time.sleep(0.1)
pass</nowiki>

==import ugfx==

<nowiki>import ugfx

ugfx.init()</nowiki>

Initialises the [https://ugfx.io/ uGFX] modules for use.

In case you want to unload the ugfx library to clear up memory or something, you can use <code>ugfx.deinit()</code>

===Flush===

Since this is a ultra low power bi-stable display, you'll need to flush your buffer to the screen!
<nowiki>ugfx.flush()</nowiki>

You can select a different way the E-Ink display updates.
<nowiki>ugfx.set_lut(lut)</nowiki>
Where the <code>lut</code> is one of the defined [[Projects:Badge/MicroPython#Constants|constants]] . .

===Primitives===

<nowiki>ugfx.clear(colour)</nowiki>
For colours, see [https://wiki.sha2017.org/w/Projects:Badge/MicroPython#Constants constants].

<nowiki>ugfx.fonts_list()</nowiki>
Gives you a list of usable [https://wiki.sha2017.org/w/Projects:Badge/MicroPython#Constants fonts].

<nowiki>ugfx.fonts_dump(name)</nowiki>
Dump the contents of the given font, you can write this to flash or use it directly.

<nowiki>ugfx.fonts_load(dump)</nowiki>
Import the fiven font data from a dump to be used with ugfx.

<nowiki>ugfx.get_char_width(char, font)</nowiki>
Returns the with of a given character, font combination in pixels.

<nowiki>ugfx.get_string_width(string, font)</nowiki>
Returns the with of a given string, font combination in pixels.

<nowiki>ugfx.char(x, y, char, font, colour)</nowiki>
Draws the given character at the position `(x, y)` using the given font and colour.

<nowiki>ugfx.string(x, y, string, font, colour)</nowiki>
Draws the given string of text at the position `(x, y)` using the given font and colour.

<nowiki>ugfx.string_box(x, y, a, b, str, font, colour, justify)</nowiki>
Draws the given text in a box at position `(x, y)` with lengths a,b using the given font, colour and [https://wiki.sha2017.org/w/Projects:Badge/MicroPython#Constants justification].

<nowiki>ugfx.pixel(x, y, colour)</nowiki>
Draws a pixel at (x,y) using the given colour.

<nowiki>ugfx.line(x1, y1, x2, y2, colour)</nowiki>
Draws a line from (x1,y1) to (x2,y2) using the given colour.

<nowiki>ugfx.box(x, y, a, b, colour)</nowiki>
Draws a box from (x,y), with lengths a,b, using the given colour.

<nowiki>ugfx.rounded_box(x, y, a, b, radius, colour)</nowiki>
Draws a box from (x,y), with lengths a,b, rounded corners with radius r, using the given colour.

<nowiki>ugfx.fill_rounded_box(x, y, a, b, radius, colour)</nowiki>
Draw a box from (x,y), with lengths a,b, rounded corners with radius r, using the given colour.

<nowiki>ugfx.area(x, y, a, b, colour)</nowiki>
Fill area from (x,y), with lengths a,b, using the given colour.

<nowiki>ugfx.thickline(x1, y1, x2, y2, colour, width, round)</nowiki>
Draw a line with a given thickness from (x1,y1) to (x2,y2) using the given colour, with an option to round the ends.

<nowiki>ugfx.circle(x, y, r, colour)</nowiki>
Draw a circle having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.fill_circle(x, y, r, colour)</nowiki>
Fill a circle having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.ellipse(x, y, a, b, colour)</nowiki>
Draw an ellipse having a centre point at (x,y), lengths a,b, using the given colour.

<nowiki>ugfx.fill_ellipse(x,y, a, b, colour)</nowiki>
Fill an ellipse having a centre point at (x,y), lengths a,b, using the given colour.

<nowiki>ugfx.arc(x, y, r, angle1, angle2, colour)</nowiki>
Draw an arc having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.fill_arc(x, y, r, angle1, angle2, colour)</nowiki>
Fill an arc having a centre point at (x,y), radius r, using the given colour.

<nowiki>ugfx.polygon(x, y, array, colour)</nowiki>
Draw a polygon starting at (x,y), using the array of points, using the given colour.

<nowiki>ugfx.fill_polygon(x, y, array, colour)</nowiki>
Fill a polygon starting at (x,y), using the array of points, using the given colour.

<nowiki>ugfx.ugfx_demo("Hacking")</nowiki>
Expects a string, displays the Still Hacking Anyway sticker 😉

===Input===

<nowiki>ugfx.input_init()</nowiki>
Needs <code>badge.init()</code> and <code>ugfx.init()</code> to have ran before it.

<nowiki>ugfx.input_attach(button, callback)</nowiki>
The callback has one boolean argument, pressed.

<nowiki>ugfx.input_attach(ugfx.JOY_UP, lambda pressed: print(pressed))</nowiki>
This example attaches a simple print function to the UP button, showing True for press and False for release.

===Constants===

Colours:
<nowiki>ugfx.BLACK
ugfx.WHITE</nowiki>

Justification:
<nowiki>ugfx.justifyLeft
ugfx.justifyCenter
ugfx.justifyRight</nowiki>

Inputs:
<nowiki>ugfx.JOY_UP
ugfx.JOY_DOWN
ugfx.JOY_LEFT
ugfx.JOY_RIGHT
ugfx.BTN_A
ugfx.BTN_B
ugfx.BTN_SELECT
ugfx.BTN_START
ugfx.BTN_FLASH</nowiki>

E-Ink [[Projects:Badge/Documentation/E-Ink#Look_Up_Table_.28LUT.29|LUT]]:
<nowiki>ugfx.LUT_FULL
ugfx.LUT_NORMAL
ugfx.LUT_FASTER
ugfx.LUT_FASTEST
ugfx.GREYSCALE</nowiki>

GREYSCALE is technically not a lut but a special rendering mode.

===Fonts===
* Roboto_Regular12
* Roboto_Regular18
* Roboto_Regular22
* Roboto_Black22
* Roboto_BlackItalic24
* PermanentMarker22
* PermanentMarker36
* pixelade13
* DejaVuSans20
* weather42

===Have Fun!!===

Let's get started!!
<nowiki>import badge
import ugfx

badge.init()
ugfx.init()

ugfx.clear(ugfx.BLACK)

ugfx.fill_circle(60, 60, 50, ugfx.WHITE);
ugfx.fill_circle(60, 60, 40, ugfx.BLACK);
ugfx.fill_circle(60, 60, 30, ugfx.WHITE);
ugfx.fill_circle(60, 60, 20, ugfx.BLACK);
ugfx.fill_circle(60, 60, 10, ugfx.WHITE);

ugfx.thickline(1,1,100,100,ugfx.WHITE,10,5)
ugfx.box(30,30,50,50,ugfx.WHITE)

ugfx.string(150,25,"STILL","Roboto_BlackItalic24",ugfx.WHITE)
ugfx.string(130,50,"Hacking","PermanentMarker22",ugfx.WHITE)
len = ugfx.get_string_width("Hacking","PermanentMarker22")
ugfx.line(130, 72, 144 + len, 72, ugfx.WHITE)
ugfx.line(140 + len, 52, 140 + len, 70, ugfx.WHITE)
ugfx.string(140,75,"Anyway","Roboto_BlackItalic24",ugfx.WHITE)

ugfx.flush()

def render(text, pushed):
if(pushed):
ugfx.string(100,10,text,"PermanentMarker22",ugfx.WHITE)
else:
ugfx.string(100,10,text,"PermanentMarker22",ugfx.BLACK)
ugfx.flush()

ugfx.input_init()
ugfx.input_attach(ugfx.JOY_UP, lambda pressed: render('UP', pressed))
ugfx.input_attach(ugfx.JOY_DOWN, lambda pressed: render('DOWN', pressed))
ugfx.input_attach(ugfx.JOY_LEFT, lambda pressed: render('LEFT', pressed))
ugfx.input_attach(ugfx.JOY_RIGHT, lambda pressed: render('RIGHT', pressed))
ugfx.input_attach(ugfx.BTN_A, lambda pressed: render('A', pressed))
ugfx.input_attach(ugfx.BTN_B, lambda pressed: render('B', pressed))
ugfx.input_attach(ugfx.BTN_START, lambda pressed: render('Start', pressed))
ugfx.input_attach(ugfx.BTN_SELECT, lambda pressed: render('Select', pressed))

while True:
pass
</nowiki>