Joël Imbaud / Mbed 2 deprecated ST7735_TFT_graphicstest_Bargraphtest

Test for graphic and bargraph for ST7735 160x80 tft display

Dependencies:   mbed Adafruit_ST7735 Adafruit_GFX

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    INTRO

    This is a test for a China 0.96" (80x160) TFT screen with ST7735 controller, it uses the library developed by Justin Kim

    Import libraryAdafruit_GFX

    Adafruit GFX Library

    Last commit 30 Jul 2015 by justin kim

    adapted from Adafruit In this test you will find a short demonstration of the graphic capabilities and a double bargraph controlled by an analog input.

    /media/uploads/jimbaud/screen1.jpg

    Wiring

    A voltage divider (10k potentiometer between 3V3 and GND) is plugged on analog input A3, the screen is connected according the following table:

    ScreenFunctionNucleo F411/F401 port
    GNDGNDGND
    VCC3V33V3
    SCLSPI ClockD13
    SDAMOSID11
    RES-D9
    DC-D8
    CSChip selectD10

    AnalogIn analogIn(A3); // Potentiometer plugged as a voltage divider on the input A3

Adafruit_ST7735 tft(D11, D12, D13, D10, D8, D9); // MOSI, MISO, SCLK, SSEL, TFT_DC, TFT_RST

    Colors definitions

    The color definition is 16 bits based, it is possible to use a color generator as the following one:

    http://www.barth-dev.de/online/rgb565-color-picker/

    #define BACKCOLOR 0x0000
#define BARCOLOR 0x0620
#define SCALECOLOR 0xFFFF

    Rendering

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