kopia lustrzana https://github.com/peterhinch/micropython-nano-gui
111 wiersze
3.7 KiB
Python
111 wiersze
3.7 KiB
Python
# color_setup.py Customise for your hardware config
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2021 Peter Hinch, Ihor Nehrutsa
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# Supports:
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# TTGO T-Display 1.14" 135*240(Pixel) based on ST7789V
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# http://www.lilygo.cn/claprod_view.aspx?TypeId=62&Id=1274
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# http://www.lilygo.cn/prod_view.aspx?TypeId=50044&Id=1126
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# https://github.com/Xinyuan-LilyGO/TTGO-T-Display
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# https://github.com/Xinyuan-LilyGO/TTGO-T-Display/blob/master/image/pinmap.jpg
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# https://github.com/Xinyuan-LilyGO/TTGO-T-Display/blob/master/schematic/ESP32-TFT(6-26).pdf
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# WIRING (TTGO T-Display pin numbers and names).
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# Pinout of TFT Driver
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# ST7789 ESP32
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# TFT_MISO N/A
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TFT_MOSI = 19 # (SDA on schematic pdf) SPI interface output/input pin.
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TFT_SCLK = 18 # This pin is used to be serial interface clock.
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TFT_CS = 5 # Chip selection pin, low enable, high disable.
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TFT_DC = 16 # Display data/command selection pin in 4-line serial interface.
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TFT_RST = 23 # This signal will reset the device,Signal is active low.
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TFT_BL = 4 # (LEDK on schematic pdf) Display backlight control pin
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ADC_IN = 34 # Measuring battery or USB voltage, see comment below
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ADC_EN = 14 # (PWR_EN on schematic pdf) is the ADC detection enable port
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BUTTON1 = 35 # right of the USB connector
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BUTTON2 = 0 # left of the USB connector
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# ESP32 pins, free for use in user applications
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#I2C_SDA = 21 # hardware ID 0
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#I2C_SCL = 22
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#UART2TXD = 17
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#GPIO2 = 2
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#GPIO15 = 15
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#GPIO13 = 13
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#GPIO12 = 12
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#GPIO37 = 37
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#GPIO38 = 38
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#UART1TXD = 4
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#UART1RXD = 5
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#GPIO18 = 18
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#GPIO19 = 19
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#GPIO17 = 17
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#DAC1 = 25
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#DAC2 = 26
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# Input only pins
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#GPIO36 = 36 # input only
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#GPIO39 = 39 # input only
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# Demo of initialisation procedure designed to minimise risk of memory fail
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# when instantiating the frame buffer. The aim is to do this as early as
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# possible before importing other modules.
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from machine import Pin, SPI, ADC
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import gc
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from drivers.st7789.st7789_4bit import *
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SSD = ST7789
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pdc = Pin(TFT_DC, Pin.OUT, value=0) # Arbitrary pins
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pcs = Pin(TFT_CS, Pin.OUT, value=1)
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prst = Pin(TFT_RST, Pin.OUT, value=1)
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pbl = Pin(TFT_BL, Pin.OUT, value=1)
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gc.collect() # Precaution before instantiating framebuf
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# Conservative low baudrate. Can go to 62.5MHz.
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spi = SPI(1, 30_000_000, sck=Pin(TFT_SCLK), mosi=Pin(TFT_MOSI))
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''' TTGO
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v +----------------+
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40 | | |
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^ | +------+ | pin 36
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240 | | | | |
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v | +------+ |
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40 | | | Reset button
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^ +----------------+
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>----<------>----<
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52 135 xx
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BUTTON2 BUTTON1
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'''
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# Right way up landscape: defined as top left adjacent to pin 36
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ssd = SSD(spi, height=135, width=240, dc=pdc, cs=pcs, rst=prst, disp_mode=LANDSCAPE, display=TDISPLAY)
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# Normal portrait display: consistent with TTGO logo at top
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# ssd = SSD(spi, height=240, width=135, dc=pdc, cs=pcs, rst=prst, disp_mode=PORTRAIT, display=TDISPLAY)
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# optional
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# b1 = Pin(BUTTON1, Pin.IN)
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# b2 = Pin(BUTTON2, Pin.IN)
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# adc_en = Pin(ADC_EN, Pin.OUT, value=1)
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# adc_in = ADC(Pin(ADC_IN))
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# adc_en.value(0)
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'''
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Set ADC_EN to "1" and read voltage in BAT_ADC,
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if this voltage more than 4.3 V device have powered from USB.
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If less then 4.3 V - device have power from battery.
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To save battery you can set ADC_EN to "0" and in this case the USB converter
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will be power off and do not use your battery.
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When you need to measure battery voltage first set ADC_EN to "1",
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measure voltage and then set ADC_EN back to "0" for save battery.
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'''
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