mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Ayke van Laethem
deca190ba2
Many displays don't have the TE pin exposed. But those that do have the pin (for example, the PyPortal) can use it to synchronize writing a new image to the display. When implemented correctly, tearing can be avoided entirely. This commit also changes the LCD refresh direction to either top-to-bottom or left-to-right depending on the rotation. Previously it might refresh from right-to-left or bottom-to-top. This has little impact on code that doesn't use the TE line, but code that does now only needs to worry about two cases (top-to-bottom and left-to-right) instead of four. (Unfortunately, it appears that the hardware doesn't support changing the major LCD refresh order so code that wants to do tear-free rendering still needs to care about these two cases).
94 lines
2.9 KiB
Go
94 lines
2.9 KiB
Go
package ili9341
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import "tinygo.org/x/drivers"
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type Rotation uint8
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const (
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// register constants based on source:
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// https://github.com/adafruit/Adafruit_ILI9341/blob/master/Adafruit_ILI9341.h
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TFTWIDTH = 240 ///< ILI9341 max TFT width
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TFTHEIGHT = 320 ///< ILI9341 max TFT height
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NOP = 0x00 ///< No-op register
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SWRESET = 0x01 ///< Software reset register
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RDDID = 0x04 ///< Read display identification information
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RDDST = 0x09 ///< Read Display Status
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SLPIN = 0x10 ///< Enter Sleep Mode
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SLPOUT = 0x11 ///< Sleep Out
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PTLON = 0x12 ///< Partial Mode ON
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NORON = 0x13 ///< Normal Display Mode ON
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RDMODE = 0x0A ///< Read Display Power Mode
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RDMADCTL = 0x0B ///< Read Display MADCTL
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RDPIXFMT = 0x0C ///< Read Display Pixel Format
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RDIMGFMT = 0x0D ///< Read Display Image Format
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RDSELFDIAG = 0x0F ///< Read Display Self-Diagnostic Result
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INVOFF = 0x20 ///< Display Inversion OFF
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INVON = 0x21 ///< Display Inversion ON
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GAMMASET = 0x26 ///< Gamma Set
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DISPOFF = 0x28 ///< Display OFF
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DISPON = 0x29 ///< Display ON
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CASET = 0x2A ///< Column Address Set
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PASET = 0x2B ///< Page Address Set
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RAMWR = 0x2C ///< Memory Write
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RAMRD = 0x2E ///< Memory Read
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PTLAR = 0x30 ///< Partial Area
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VSCRDEF = 0x33 ///< Vertical Scrolling Definition
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TEOFF = 0x34 ///< TEOFF: Tearing Effect Line OFF
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TEON = 0x35 ///< TEON: Tearing Effect Line ON
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MADCTL = 0x36 ///< Memory Access Control
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VSCRSADD = 0x37 ///< Vertical Scrolling Start Address
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PIXFMT = 0x3A ///< COLMOD: Pixel Format Set
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FRMCTR1 = 0xB1 ///< Frame Rate Control (In Normal Mode/Full Colors)
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FRMCTR2 = 0xB2 ///< Frame Rate Control (In Idle Mode/8 colors)
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FRMCTR3 = 0xB3 ///< Frame Rate control (In Partial Mode/Full Colors)
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INVCTR = 0xB4 ///< Display Inversion Control
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DFUNCTR = 0xB6 ///< Display Function Control
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PWCTR1 = 0xC0 ///< Power Control 1
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PWCTR2 = 0xC1 ///< Power Control 2
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PWCTR3 = 0xC2 ///< Power Control 3
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PWCTR4 = 0xC3 ///< Power Control 4
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PWCTR5 = 0xC4 ///< Power Control 5
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VMCTR1 = 0xC5 ///< VCOM Control 1
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VMCTR2 = 0xC7 ///< VCOM Control 2
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RDID1 = 0xDA ///< Read ID 1
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RDID2 = 0xDB ///< Read ID 2
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RDID3 = 0xDC ///< Read ID 3
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RDID4 = 0xDD ///< Read ID 4
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GMCTRP1 = 0xE0 ///< Positive Gamma Correction
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GMCTRN1 = 0xE1 ///< Negative Gamma Correction
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//PWCTR6 0xFC
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MADCTL_MY = 0x80 ///< Bottom to top
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MADCTL_MX = 0x40 ///< Right to left
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MADCTL_MV = 0x20 ///< Reverse Mode
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MADCTL_ML = 0x10 ///< LCD refresh Bottom to top
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MADCTL_RGB = 0x00 ///< Red-Green-Blue pixel order
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MADCTL_BGR = 0x08 ///< Blue-Green-Red pixel order
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MADCTL_MH = 0x04 ///< LCD refresh right to left
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)
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const (
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Rotation0 = drivers.Rotation0
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Rotation90 = drivers.Rotation90 // 90 degrees clock-wise rotation
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Rotation180 = drivers.Rotation180
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Rotation270 = drivers.Rotation270
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Rotation0Mirror = drivers.Rotation0Mirror
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Rotation90Mirror = drivers.Rotation90Mirror
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Rotation180Mirror = drivers.Rotation180Mirror
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Rotation270Mirror = drivers.Rotation270Mirror
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)
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