arduino:displays_for_classic_arduinos:nokia_5110_displays_and_classic_arduinos_speed_test
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arduino:displays_for_classic_arduinos:nokia_5110_displays_and_classic_arduinos_speed_test [2018/01/27 22:20] – ↷ Page name changed from arduino:displays_for_classic_arduinos:nokia_5110_display_and_classic_arduinos_speed_test to arduino:displays_for_classic_arduinos:nokia_5110_displays_and_classic_arduinos_speed_test mithat | arduino:displays_for_classic_arduinos:nokia_5110_displays_and_classic_arduinos_speed_test [2018/01/28 06:20] – [Summary evaluation] mithat | ||
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- | ====== Nokia 5110 displays and Arduino Uno: speed test ====== | + | ====== Nokia 5110 displays and classic Arduinos: speed test ====== |
- | I used [[https:// | + | ===== Summary evaluation ===== |
- | Speed will probably roughly double with a 16 MHz board, but there are no 16 MHz 3.3V boards, so that means you'll have to complicate things a bit with level shifters. | + | For general information on this display, see [[arduino: |
- | <file c++ display_nokia_5110_u8g2_counter.ino> | + | One might expect this 84×48 display with 1 bit color depth to be updateable pretty quickly even with a torpid Uno/ |
- | #include <U8g2lib.h> | + | character change artifacts are not objectionable. The frame update time is expected to halve with a 16 MHz board, but there are no 16 MHz 3.3V boards, so that means you'll have to complicate things a bit with level shifters. |
- | /* | + | The bad news is that it's still a bit of a memory glutton, consuming |
- | | + | |
- | | + | |
- | * Test screen update speed with large solid fonts on | + | |
- | * a Nokia 5110 screen | + | |
- | * | + | |
- | * Notes: | + | |
- | * Consumes | + | |
- | | + | |
- | */ | + | |
- | /* | + | ===== Tests ===== |
- | * Pin assignments: | + | |
- | * RST: 8 | + | |
- | * CE/CS/SCE: 10 | + | |
- | * DC/" | + | |
- | * DIN/ | + | |
- | * CLK/ | + | |
- | * VCC: 3.3V | + | |
- | * LIGHT/LED: ground through 330 ohm resistor | + | |
- | * GND: ground | + | |
- | */ | + | |
- | const unsigned int CLOCK_PIN = 13, | + | I used [[https:// |
- | | + | |
- | | + | |
- | | + | |
- | | + | |
- | // | + | The glare on the edges is an artifact from the four LEDs used to backlight the display. In real life the arifact doesn' appear as glare, but it is clear on inspection that there are four sources of illumination. |
- | U8G2_PCD8544_84X48_1_4W_HW_SPI disp = U8G2_PCD8544_84X48_1_4W_HW_SPI(U8G2_R0, | + | |
- | unsigned int counter | + | {{youtube> |
- | char dispStr[4]; | + | |
- | void setup(void) { | + | [[display_nokia_5110_u8g2_counter.ino | source code]] |
- | disp.begin(); | + | |
- | disp.setContrast(145); | + | |
- | disp.setColorIndex(1); | + | |
- | } | + | |
- | void loop(void) { | ||
- | counter = (counter + 1) % 1000; | ||
- | | ||
- | // picture loop | ||
- | disp.firstPage(); | ||
- | do { | ||
- | disp.setFont(u8g2_font_5x8_tr); | ||
- | disp.drawStr(0, | ||
- | |||
- | disp.setFont(u8g2_font_logisoso38_tr); | ||
- | String(counter).toCharArray(dispStr, | ||
- | disp.drawStr( 0, 47, dispStr); | ||
- | } while ( disp.nextPage() ); | ||
- | |||
- | /* inherent frame rate is about 10 fps with 8MHz processor | ||
- | | ||
- | delay(500); | ||
- | } | ||
- | </ |
arduino/displays_for_classic_arduinos/nokia_5110_displays_and_classic_arduinos_speed_test.txt · Last modified: 2018/02/01 20:06 by mithat