PIN_SPI_RST = 2, Used for ST7735
PIN_SPI_DC = 4, Used for ST7735
PIN_SPI_CS_SS = 15, Used for ST7735
PIN_SPI_SDA_SDI_DARA_IN_MOSI = 13, Used for ST7735
PIN_SPI_SDO_DATA_OUT_MISO = 12
PIN_SPI_SCK_CLK_SCL_SCLK = 14, Used for ST7735
PIN_DISPLAY_BRIGHTNESS = 5, can be used, if support
PIN_I2C_SDA = 21
PIN_I2C_SCL = 22
PIN_UART_TX = 17
PIN_UART_RX = 16
for blue display without indications, pins:
1->8 = LED -> CS -> RS(DC,A0) -> RES -> SDA -> SCK -> VCC -> GND
red and black (touch) display DC = A0
