Documentation
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Overview ¶
Package ili9341 provides driver to ILI9341 based displays.
Index ¶
Constants ¶
const ( NOP = philips.NOP // No Operation SWRESET = philips.SWRESET // Software Reset RDDIDIF = philips.RDDIDIF // Read Display IdentificInformation RDDST = philips.RDDST // Read Display Status RDDPM = 0x0A // Read Display Power Mode RDDMADCTL = 0x0B // Read Display MADCTL RDDCOLMOD = 0x0C // Read Display Pixel Format RDDIM = 0x0D // Read Display Image Format RDDSM = 0x0E // Read Display Signal Mode RDDSDR = 0x0F // Read Display Self-Diagnostic Result SLPIN = philips.SLPIN // Enter Sleep Mode SLPOUT = philips.SLPOUT // Exit Sleep Mode PTLON = philips.PTLON // Partial Mode ON NORON = philips.NORON // Normal Display Mode ON DINVOFF = philips.INVOFF // Display Inversion OFF DINVON = philips.INVON // Display Inversion ON GAMSET = 0x26 // Gamma Set DISPOFF = philips.DISPOFF // Display OFF DISPON = philips.DISPON // Display ON CASET = philips.CASET // Column Address Set PASET = philips.PASET // Page Address Set RAMWR = philips.RAMWR // Memory Write RGBSET = philips.RGBSET // Color SET RAMRD = philips.RAMRD // Memory Read PLTAR = philips.PTLAR // Partial Area VSCRDEF = philips.VSCRDEF // Vertical Scrolling Definition TEOFF = philips.TEOFF // Tearing Effect Line OFF TEON = philips.TEON // Tearing Effect Line ON MADCTL = philips.MADCTL // Memory Access Control VSCRSADD = philips.SEP // Vertical Scrolling Start Address IDMOFF = philips.IDMOFF // Idle Mode OFF IDMON = philips.IDMON // Idle Mode ON PIXSET = philips.COLMOD // Pixel Format Set RAMWRC = 0x3C // Memory Write Continue RAMRDC = 0x3E // Memory Read Continue TSCLSET = 0x44 // Set Tear Scanline TSCLGET = 0x45 // Get Scanline WRDISBV = 0x51 // Write Display Brightness RDDISBV = 0x52 // Read Display Brightness WRCTRLD = 0x53 // Write CTRL Display RDCTRLD = 0x54 // Read CTRL Display WRCABC = 0x55 // Write Content Adaptive Brightness Ctrl RDCABC = 0x56 // Read Content Adaptive Brightness Ctrl WRCABCMB = 0x5E // Write CABC Minimum Brightness RDCABCMB = 0x5F // Write CABC Minimum Brightness IFMODE = 0xB0 // RGB Interface Signal Control FRMCTR1 = 0xB1 // Frame Control (In Normal Mode) FRMCTR2 = 0xB2 // Frame Control (In Idle Mode) FRMCTR3 = 0xB3 // Frame Control (In Partial Mode) INVTR = 0xB4 // Display Inversion Control PRCTR = 0xB5 // Blanking Porch Control DISCTRL = 0xB6 // Display Function Control ETMOD = 0xB7 // Entry Mode Set BLCTR1 = 0xB8 // Backlight Control 1 BLCTR2 = 0xB9 // Backlight Control 2 BLCTR3 = 0xBA // Backlight Control 3 BLCTR4 = 0xBB // Backlight Control 4 BLCTR5 = 0xBC // Backlight Control 5 BLCTR7 = 0xBE // Backlight Control 7 BLCTR8 = 0xBF // Backlight Control 8 PWCTR1 = 0xC0 // Power Control 1 PWCTR2 = 0xC1 // Power Control 2 VMCTR1 = 0xC5 // VCOM Control 1 VMCTR2 = 0xC7 // VCOM Control 2 PWCTRA = 0xCB // Power control A PWCTRB = 0xCF // Power control B NVMWR = 0xD0 // NV Memory Write NVMPKEY = 0xD1 // NV Memory Protection Key RDNVM = 0xD2 // NV Memory Status Read RDID4 = 0xD3 // Read ID4 RDID1 = philips.RDID1 // Read ID1 RDID2 = philips.RDID2 // Read ID2 RDID3 = philips.RDID3 // Read ID3 PGAMCTRL = 0xE0 // Positive Gamma Correction NGAMCTRL = 0xE1 // Negative Gamma Correction DGAMCTRL1 = 0xE2 // Digital Gamma Control 1 DGAMCTRL2 = 0xE3 // Digital Gamma Control 2 DRVTIM = 0xE8 // Driver timing control DRVTIMA = 0xE9 // Driver timing control A DRVTIMB = 0xEA // Driver timing control B PONSEQ = 0xED // Power on sequence control SFD = philips.SFD // Set Factory Defaults (undocumented) IFCTL = 0xF6 // Interface Contro EN3G = 0xF2 // Enable 3G PUMPRT = 0xF7 // Pump ratio control )
ILI9341 commands
const ( MH = 1 << 2 // horizontal refresh order BGR = 1 << 3 // BGR color filter panel ML = 1 << 4 // vertical refresh order MV = 1 << 5 // row/column exchange MX = 1 << 6 // column address order MY = 1 << 7 // row address order )
MADCTL arguments
const ( MCU16 = 0x05 // set 16-bit 565 pixel format for MCU interface MCU18 = 0x06 // set 18-bit 666 pixel format for MCU interface RGB16 = 0x50 // set 16-bit 565 pixel format for RGB interface RGB18 = 0x60 // set 18-bit 666 pixel format for RGB interface )
PIXSET arguments
const ( MaxSPIWriteClock = 10_000_000 MaxSPIReadClock = 6_700_000 )
The maximum SPI clock is 10 MHz for writing and 6.7 MHz for reading. In practice the controller seems to work fine in both directions with 24 MHz SPI clock and some sources confirm good results even at 80 MHz for writing. The performance of a particular SPI bus depends on many factors which can probably be tuned for even higher speeds. The absolute upper limits are those given for the parallel interface.
const ( MaxParallelWriteClock = 15_000_000 MaxParallelReadClock = 2_200_000 )
The maximum speed of the 18/16/9/8-bit paraller interface is 15 MHz for writing and 2.2 MHz for reading. This corresponds to the maximum bandwidth of 272 Mb/s and 40 Mb/s respectively (18-bit interface).
Variables ¶
var GFX = []byte{}/* 114 elements not displayed */
GFX contains initialization commands taken from Adafruit GFX library.
var MSP2807 = []byte{}/* 108 elements not displayed */
MSP2807 contains initialization commands for MSP2807 module (QD-TFT2803) taken from http://www.lcdwiki.com/2.8inch_SPI_Module_ILI9341_SKU:MSP2807
Functions ¶
func New ¶
New returns a new tftdrv.Driver that implements pix.Driver interface. The returned driver works without reading the frame memory so the alpha blending is slow and reduced to 1-bit resolution. Use NewOver if the display supports reading pixel data and the full-fledged Porter-Duff composition is required.
func NewOver ¶
func NewOver(dci tftdrv.DCI) *tftdrv.DriverOver
NewOver returns a new tftdrv.DriverOver that implements pix.Driver interface. The returned driver fully supports the draw.Over operator but requires reading pixel data from the frame memory. If the display has write-only interface use New instead.
Types ¶
This section is empty.
Source Files