Initial working version
This commit is contained in:
Dejvino
commit
9df7862e97
152
font8x8_basic.h
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152
font8x8_basic.h
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@ -0,0 +1,152 @@
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/**
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* 8x8 monochrome bitmap fonts for rendering
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* Author: Daniel Hepper <daniel@hepper.net>
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*
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* License: Public Domain
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*
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* Based on:
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* // Summary: font8x8.h
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* // 8x8 monochrome bitmap fonts for rendering
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* //
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* // Author:
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* // Marcel Sondaar
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* // International Business Machines (public domain VGA fonts)
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* //
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* // License:
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* // Public Domain
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*
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* Fetched from: http://dimensionalrift.homelinux.net/combuster/mos3/?p=viewsource&file=/modules/gfx/font8_8.asm
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**/
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// Constant: font8x8_basic
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// Contains an 8x8 font map for unicode points U+0000 - U+007F (basic latin)
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char font8x8_basic[128][8] = {
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0000 (nul)
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0001
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0002
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0003
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0004
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0005
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0006
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0007
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0008
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0009
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000A
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000B
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000C
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000D
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000E
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000F
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0010
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0011
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0012
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0013
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0014
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0015
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0016
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0017
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0018
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0019
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001A
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001B
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001C
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001D
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001E
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001F
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0020 (space)
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{ 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00}, // U+0021 (!)
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{ 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0022 (")
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{ 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00}, // U+0023 (#)
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{ 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00}, // U+0024 ($)
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{ 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00}, // U+0025 (%)
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{ 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00}, // U+0026 (&)
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{ 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0027 (')
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{ 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00}, // U+0028 (()
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{ 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00}, // U+0029 ())
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{ 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00}, // U+002A (*)
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{ 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00}, // U+002B (+)
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+002C (,)
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{ 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00}, // U+002D (-)
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+002E (.)
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{ 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00}, // U+002F (/)
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{ 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0)
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{ 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1)
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{ 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2)
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{ 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3)
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{ 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4)
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{ 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5)
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{ 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6)
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{ 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7)
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{ 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+0038 (8)
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{ 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00}, // U+0039 (9)
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{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+003A (:)
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{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+003B (;)
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{ 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00}, // U+003C (<)
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{ 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00}, // U+003D (=)
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{ 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00}, // U+003E (>)
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{ 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00}, // U+003F (?)
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{ 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00}, // U+0040 (@)
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{ 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}, // U+0041 (A)
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{ 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00}, // U+0042 (B)
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{ 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00}, // U+0043 (C)
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{ 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00}, // U+0044 (D)
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{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00}, // U+0045 (E)
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{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00}, // U+0046 (F)
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{ 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00}, // U+0047 (G)
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{ 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00}, // U+0048 (H)
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{ 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0049 (I)
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{ 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00}, // U+004A (J)
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{ 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00}, // U+004B (K)
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{ 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00}, // U+004C (L)
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{ 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00}, // U+004D (M)
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{ 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00}, // U+004E (N)
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{ 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00}, // U+004F (O)
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{ 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00}, // U+0050 (P)
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{ 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00}, // U+0051 (Q)
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{ 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00}, // U+0052 (R)
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{ 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00}, // U+0053 (S)
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{ 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0054 (T)
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{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00}, // U+0055 (U)
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{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0056 (V)
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{ 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00}, // U+0057 (W)
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{ 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00}, // U+0058 (X)
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{ 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00}, // U+0059 (Y)
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{ 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00}, // U+005A (Z)
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{ 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00}, // U+005B ([)
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{ 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00}, // U+005C (\)
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{ 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00}, // U+005D (])
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{ 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00}, // U+005E (^)
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF}, // U+005F (_)
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{ 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0060 (`)
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{ 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00}, // U+0061 (a)
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{ 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00}, // U+0062 (b)
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{ 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00}, // U+0063 (c)
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{ 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00}, // U+0064 (d)
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{ 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00}, // U+0065 (e)
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{ 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00}, // U+0066 (f)
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{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0067 (g)
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{ 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00}, // U+0068 (h)
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{ 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0069 (i)
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{ 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E}, // U+006A (j)
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{ 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00}, // U+006B (k)
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{ 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+006C (l)
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{ 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00}, // U+006D (m)
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{ 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00}, // U+006E (n)
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{ 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+006F (o)
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{ 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F}, // U+0070 (p)
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{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78}, // U+0071 (q)
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{ 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00}, // U+0072 (r)
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{ 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00}, // U+0073 (s)
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{ 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00}, // U+0074 (t)
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{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00}, // U+0075 (u)
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{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0076 (v)
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{ 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00}, // U+0077 (w)
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{ 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00}, // U+0078 (x)
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{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0079 (y)
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{ 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00}, // U+007A (z)
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{ 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00}, // U+007B ({)
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{ 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, // U+007C (|)
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{ 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00}, // U+007D (})
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{ 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007E (~)
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} // U+007F
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};
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75
main.c
Normal file
75
main.c
Normal file
@ -0,0 +1,75 @@
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#include <stdio.h>
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#include "st7735.h"
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#include <wiringPi.h>
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int main(int argc, char *argv[])
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{
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setbuf(stdout, NULL);
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wiringPiSetup();
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lcd_t* lcd = lcd_init(40000000, 10, 2, 0);
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printf("Fill display...");
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printf("blue...");
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lcd_fillScreen(0, 70, 160);
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delay(1000);
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printf("black...");
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lcd_fillScreen(0, 0, 0);
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printf("DONE\n");
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delay(1000);
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/* Draw the lines */
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/*printf("Lines...");
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lcdst_drawHLine(0, 149, 128, 0, 255, 255);
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lcdst_drawHLine(0, 139, 128, 255, 255, 0);
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lcdst_drawVLine(117, 0, 160, 0, 255, 255);
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lcdst_drawVLine(107, 0, 160, 255, 255, 0);
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printf("DONE\n");*/
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/*printf("Points...");
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for (int i = 1; i < 20; i++) {
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lcdst_drawPx(5 - 1, 70 + i, 100, 100, 100);
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lcdst_drawPx(5 + i + 1, 70 + i, 100, 100, 100);
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}
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printf("DONE\n");
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printf("Triangle...");
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for (int i = 1; i < 20; i++) {
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lcdst_drawHLine(5, 70 + i, i, 255, 0, 0);
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}
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printf("DONE\n");*/
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printf("Rectangles...");
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//printf("outline...");
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//lcd_drawRect(10, 10, 10, 10, 0, 255, 255);
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//lcd_drawRect(10, 30, 10, 10, 255, 255, 0);
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printf("filled...");
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lcd_fillRect(30, 10, 10, 10, 0, 255, 255);
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lcd_fillRect(30, 30, 10, 10, 255, 255, 0);
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printf("bunch...");
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for (int i = 0; i < 40; i++) {
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lcd_fillRect(40 + (i%13) * 4, 40 + (i%19) * 4, 20, 20, i % 5 * 15, i % 7 * 17, i % 3 * 23);
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}
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printf("DONE\n");
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printf("Text...");
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lcd_printChar(10, 90, 'A');
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lcd_printText(10, 50, "Ahoj!");
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lcd_printChar(10, 100, 'Z');
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printf("DONE\n");
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/* Send the raw data */
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/* printf("Raw...");
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lcdst_setWindow(20, 20, 29, 29);
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for(uint8 i=0; i<100; i++) lcdst_pushPx(255, 0, 255);
|
||||
lcdst_setWindow(0, 0, 127, 159);
|
||||
printf("DONE\n");*/
|
||||
|
||||
|
||||
/* Uninitialize the display */
|
||||
//lcd_deinit(lcd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
3
meson.build
Normal file
3
meson.build
Normal file
@ -0,0 +1,3 @@
|
||||
project('dejvino-ST7735', 'c')
|
||||
src = ['main.c', 'st7735.c']
|
||||
executable('st7735', src, link_args: '-lwiringPi')
|
||||
332
st7735.c
Normal file
332
st7735.c
Normal file
@ -0,0 +1,332 @@
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include "st7735.h"
|
||||
#include "font8x8_basic.h"
|
||||
|
||||
/********************************** EASY PORT *********************************/
|
||||
/*
|
||||
* If you porting this code, you can change below headers and function pointers
|
||||
* in gpio structure.
|
||||
*/
|
||||
#include <wiringPi.h>
|
||||
#include <wiringPiSPI.h>
|
||||
struct
|
||||
{
|
||||
void (* const delay)(unsigned int milliseconds);
|
||||
void (* const pinMode)(int pin, int mode);
|
||||
void (* const digitalWrite)(int pin, int value);
|
||||
int (* const spiSetup)(int channel, int speed);
|
||||
int (* const spiDataRW)(int channel, uint8 *data, int length);
|
||||
} static const gpio =
|
||||
{
|
||||
delay,
|
||||
pinMode,
|
||||
digitalWrite,
|
||||
wiringPiSPISetup,
|
||||
wiringPiSPIDataRW
|
||||
};
|
||||
/****************************** END EASY PORT END *****************************/
|
||||
|
||||
/* The global variable that stores the pointer to the structure,
|
||||
* with the current active display.
|
||||
*/
|
||||
static lcd_t *activeDisplay;
|
||||
|
||||
/*
|
||||
* Safe allocation of the memory block.
|
||||
*
|
||||
* Parameters:
|
||||
* size - Size of memory block to allocate.
|
||||
*
|
||||
* Return:
|
||||
* Pointer to the memory block. If an error occurs, stop the program.
|
||||
*/
|
||||
static inline void *safeMalloc(size_t size)
|
||||
{
|
||||
void *memoryBlock = (void*) malloc(size);
|
||||
|
||||
/* Check the pointer */
|
||||
if(memoryBlock == NULL)
|
||||
{
|
||||
fprintf(stderr, "Out of RAM memory!\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
return memoryBlock;
|
||||
} /* safeMalloc */
|
||||
|
||||
|
||||
void lcd_setOrientation(uint8 orientation);
|
||||
void lcd_setGamma(uint8 state);
|
||||
void lcd_pushPx(uint8 r, uint8 g, uint8 b);
|
||||
void lcd_pushPixels(uint8* pixels, size_t count);
|
||||
void lcd_pushChar(char c);
|
||||
|
||||
/*
|
||||
* Write the command to the display driver.
|
||||
*
|
||||
* Parameters:
|
||||
* cmd - The command to write.
|
||||
*/
|
||||
static inline void writeCommand(uint8 cmd)
|
||||
{
|
||||
gpio.digitalWrite(activeDisplay->a0, LOW);
|
||||
gpio.spiDataRW(activeDisplay->cs, &cmd, 1);
|
||||
} /* writeCommand */
|
||||
|
||||
/*
|
||||
* Write the data to the display driver.
|
||||
*
|
||||
* Parameters:
|
||||
* data - The data to write.
|
||||
*/
|
||||
static inline void writeData(uint8 data)
|
||||
{
|
||||
gpio.digitalWrite(activeDisplay->a0, HIGH);
|
||||
gpio.spiDataRW(activeDisplay->cs, &data, 1);
|
||||
} /* writeData */
|
||||
|
||||
lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs)
|
||||
{
|
||||
/* Create the one instance of the lcdst_t structure and activate it */
|
||||
lcd_t *instance = (lcd_t *) safeMalloc(sizeof(lcd_t));
|
||||
|
||||
activeDisplay = instance;
|
||||
|
||||
/* Assign specific pins */
|
||||
instance->cs = cs;
|
||||
instance->a0 = a0;
|
||||
instance->rs = rs;
|
||||
/*
|
||||
* instance->width; instance->height
|
||||
* The setting of this variables will take place
|
||||
* in the function lcdst_setOrientation() below.
|
||||
*/
|
||||
|
||||
/* Configure the a0 pin. The logic level is not significant now. */
|
||||
gpio.pinMode(instance->a0, OUTPUT);
|
||||
|
||||
/* If the rs pin is connected then configure it */
|
||||
if(instance->rs != -1)
|
||||
{
|
||||
gpio.pinMode(instance->rs, OUTPUT);
|
||||
gpio.digitalWrite(instance->rs, HIGH); /* Reset OFF */
|
||||
gpio.delay(10);
|
||||
}
|
||||
|
||||
/* Configure the SPI interface */
|
||||
if(gpio.spiSetup(instance->cs, spiSpeed) == -1)
|
||||
{
|
||||
fprintf(stderr, "Failed to setup the SPI interface!\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
/* Software reset; Wait minimum 120ms */
|
||||
writeCommand(0x01);
|
||||
gpio.delay(150);
|
||||
|
||||
/* Sleep out; Wait minimum 120ms */
|
||||
writeCommand(0x11);
|
||||
gpio.delay(150);
|
||||
|
||||
/* Set the orientation and the gamma */
|
||||
lcd_setOrientation(0);
|
||||
lcd_setGamma(2); /* Optional */
|
||||
|
||||
/* Set the pixel format */
|
||||
writeCommand(0x3A);
|
||||
writeData(0x06);
|
||||
|
||||
/* Display ON; Wait 100ms before start */
|
||||
writeCommand(0x29);
|
||||
gpio.delay(100);
|
||||
|
||||
return instance;
|
||||
} /* lcd_init */
|
||||
|
||||
void lcd_deinit(lcd_t *display)
|
||||
{
|
||||
if(display == NULL) return;
|
||||
|
||||
free(display);
|
||||
} /* lcdst_uninit */
|
||||
|
||||
void lcd_setOrientation(uint8 orientation)
|
||||
{
|
||||
writeCommand(0x36); /* Memory Data Access Control */
|
||||
|
||||
switch(orientation)
|
||||
{
|
||||
case 1:
|
||||
writeData(0x60); /* MX + MV */
|
||||
activeDisplay->width = 160;
|
||||
activeDisplay->height = 128;
|
||||
lcd_setWindow(0, 0, 159, 127);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
writeData(0xC0); /* MY + MX */
|
||||
activeDisplay->width = 128;
|
||||
activeDisplay->height = 160;
|
||||
lcd_setWindow(0, 0, 127, 159);
|
||||
break;
|
||||
|
||||
case 3:
|
||||
writeData(0xA0); /* MY + MV */
|
||||
activeDisplay->width = 160;
|
||||
activeDisplay->height = 128;
|
||||
lcd_setWindow(0, 0, 159, 127);
|
||||
break;
|
||||
|
||||
default:
|
||||
writeData(0x00); /* None */
|
||||
activeDisplay->width = 128;
|
||||
activeDisplay->height = 160;
|
||||
lcd_setWindow(0, 0, 127, 159);
|
||||
break;
|
||||
}
|
||||
} /* lcdst_setOrientation */
|
||||
|
||||
void lcd_setGamma(uint8 state)
|
||||
{
|
||||
/* The status (0 or 1) of the GS pin can only be empirically tested */
|
||||
switch(state)
|
||||
{
|
||||
case 1: state = 2; break; /* GS_pin=1: 1.8; GS_pin=0: 2.5 */
|
||||
case 2: state = 4; break; /* GS_pin=1: 2.5; GS_pin=0: 2.2 */
|
||||
case 3: state = 8; break; /* GS_pin=1: 1.0; GS_pin=0: 1.8 */
|
||||
default: state = 1; break; /* GS_pin=1: 2.2; GS_pin=0: 1.0 */
|
||||
}
|
||||
|
||||
/* Set built-in gamma */
|
||||
writeCommand(0x26);
|
||||
writeData(state);
|
||||
} /* lcdst_setGamma */
|
||||
|
||||
void lcd_setInversion(uint8 state)
|
||||
{
|
||||
/* Display inversion ON/OFF */
|
||||
writeCommand(state ? 0x21 : 0x20);
|
||||
} /* lcdst_setInversion */
|
||||
|
||||
uint8 lcd_setWindow(uint8 x1, uint8 y1, uint8 x2, uint8 y2)
|
||||
{
|
||||
/* Accept: 0 <= x1 <= x2 < activeDisplay->width */
|
||||
if(x2 < x1) return 1;
|
||||
if(x2 >= activeDisplay->width) return 1;
|
||||
|
||||
/* Accept: 0 <= y1 <= y2 < activeDisplay->height */
|
||||
if(y2 < y1) return 1;
|
||||
if(y2 >= activeDisplay->height) return 1;
|
||||
|
||||
/* Set column address */
|
||||
writeCommand(0x2A);
|
||||
writeData(0); writeData(x1);
|
||||
writeData(0); writeData(x2);
|
||||
|
||||
/* Set row address */
|
||||
writeCommand(0x2B);
|
||||
writeData(0); writeData(y1);
|
||||
writeData(0); writeData(y2);
|
||||
|
||||
/* Activate RAW write */
|
||||
writeCommand(0x2C);
|
||||
//gpio.delay(5);
|
||||
|
||||
return 0;
|
||||
} /* lcdst_setWindow */
|
||||
|
||||
void lcd_activateRamWrite(void)
|
||||
{
|
||||
writeCommand(0x2C);
|
||||
//gpio.delay(5);
|
||||
} /* lcdst_activateRamWrite */
|
||||
|
||||
uint8 pixel[3];
|
||||
|
||||
inline void lcd_pushPx(uint8 r, uint8 g, uint8 b)
|
||||
{
|
||||
gpio.digitalWrite(activeDisplay->a0, HIGH);
|
||||
pixel[0] = r;
|
||||
pixel[1] = g;
|
||||
pixel[2] = b;
|
||||
gpio.spiDataRW(activeDisplay->cs, pixel, 3);
|
||||
} /* lcdst_pushPx */
|
||||
|
||||
void lcd_pushPixels(uint8* pixels, size_t count)
|
||||
{
|
||||
gpio.digitalWrite(activeDisplay->a0, HIGH);
|
||||
gpio.spiDataRW(activeDisplay->cs, pixels, count * 3);
|
||||
}
|
||||
|
||||
void lcd_drawPx(uint8 x, uint8 y, uint8 r, uint8 g, uint8 b)
|
||||
{
|
||||
if(lcd_setWindow(x, y, x, y)) return;
|
||||
lcd_pushPx(r, g, b);
|
||||
} /* lcdst_drawPx */
|
||||
|
||||
void lcd_fillRect(uint8 x, uint8 y, uint8 w, uint8 h,
|
||||
uint8 r, uint8 g, uint8 b)
|
||||
{
|
||||
/* Draw only in the display space */
|
||||
if((w == 0) || (h == 0)) return;
|
||||
if((x+w-1) >= activeDisplay->width) w = activeDisplay->width - x;
|
||||
if((y+h-1) >= activeDisplay->height) h = activeDisplay->height - y;
|
||||
|
||||
/* Draw the filled rectangle */
|
||||
if(lcd_setWindow(x, y, x+w-1, y+h-1)) return;
|
||||
|
||||
#define BUFFER_PIXELS 64
|
||||
int wh = w*h;
|
||||
uint8 buffer[BUFFER_PIXELS * sizeof(uint8) * 3];
|
||||
for (int p = 0; p < wh; p += BUFFER_PIXELS) {
|
||||
for(int pb = 0; pb < BUFFER_PIXELS; pb++) {
|
||||
buffer[pb * 3 + 0] = r;
|
||||
buffer[pb * 3 + 1] = g;
|
||||
buffer[pb * 3 + 2] = b;
|
||||
}
|
||||
int rem = wh - p;
|
||||
lcd_pushPixels(buffer, ((rem < BUFFER_PIXELS) ? rem : BUFFER_PIXELS));
|
||||
}
|
||||
}
|
||||
|
||||
void lcd_fillScreen(uint8 r, uint8 g, uint8 b)
|
||||
{
|
||||
/* Fill the whole screen with one color */
|
||||
lcd_fillRect(0, 0, activeDisplay->width, activeDisplay->height, r, g, b);
|
||||
} /* lcdst_drawScreen */
|
||||
|
||||
void lcd_pushChar(char c)
|
||||
{
|
||||
char* bitmap = font8x8_basic[(unsigned int) c];
|
||||
int x,y;
|
||||
int set;
|
||||
int mask;
|
||||
for (x=0; x < 8; x++) {
|
||||
for (y=0; y < 8; y++) {
|
||||
set = bitmap[x] & 1 << y;
|
||||
printf("%c", set ? 'X' : ' ');
|
||||
if (set) {
|
||||
lcd_pushPx(200, 0, 0);
|
||||
} else {
|
||||
lcd_pushPx(0, 0, 0);
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
void lcd_printChar(uint8 x, uint8 y, char c)
|
||||
{
|
||||
lcd_setWindow(x, y, x+8 - 1, y+8 - 1);
|
||||
lcd_pushChar(c);
|
||||
}
|
||||
|
||||
void lcd_printText(uint8 x, uint8 y, char* text)
|
||||
{
|
||||
for (int i = 0; i < strlen(text); i++) {
|
||||
lcd_printChar(x + i * 8, y, text[i]);
|
||||
}
|
||||
}
|
||||
|
||||
100
st7735.h
Normal file
100
st7735.h
Normal file
@ -0,0 +1,100 @@
|
||||
#ifndef uint8
|
||||
#define uint8 unsigned char
|
||||
#endif
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int cs, a0, rs;
|
||||
uint8 width, height;
|
||||
} lcd_t;
|
||||
|
||||
/*
|
||||
* Initialize the display and create a data structure for it.
|
||||
* The last initialized display is active.
|
||||
*
|
||||
* Parameters:
|
||||
* spiSpeed - Speed of the SPI interface.
|
||||
* cs - Chip selection pin.
|
||||
* a0 - Data/Command pin.
|
||||
* rs - Optional reset pin. If you do not use it, enter -1.
|
||||
*
|
||||
* Return: Pointer to the structure with display data.
|
||||
*
|
||||
*/
|
||||
lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs);
|
||||
|
||||
/*
|
||||
* Reset the specified display and clear the previously assigned memory.
|
||||
*
|
||||
* Parameters:
|
||||
* display - Pointer to the structure with display data.
|
||||
*
|
||||
* Return: void
|
||||
*/
|
||||
void lcd_deinit(lcd_t *display);
|
||||
|
||||
/*
|
||||
* Set the drawing area on the currently active display.
|
||||
*
|
||||
* Parameters:
|
||||
* x1 - The X parameter of the first point.
|
||||
* y1 - The Y parameter of the first point.
|
||||
* x2 - The X parameter of the second point.
|
||||
* y2 - The Y parameter of the second point.
|
||||
*
|
||||
* Return: Confirmation of the occurrence or non-occurrence of an error.
|
||||
* 0 - The error did not occur; 1 - The error occurred.
|
||||
*
|
||||
*/
|
||||
uint8 lcd_setWindow(uint8 x1, uint8 y1, uint8 x2, uint8 y2);
|
||||
|
||||
/*
|
||||
* Draw one pixel on the currently active display.
|
||||
* The color intensity scale for a normal pixel is from 0 to 255.
|
||||
* The color intensity scale for the reduced pixel is from 0 to 15.
|
||||
*
|
||||
* Parameters:
|
||||
* x - The X parameter of the pixel.
|
||||
* y - The Y parameter of the pixel.
|
||||
* r - The intensity of the red color.
|
||||
* g - The intensity of the green color.
|
||||
* b - The intensity of the blue color.
|
||||
*
|
||||
* Return: void
|
||||
*/
|
||||
void lcd_drawPx(uint8 x, uint8 y, uint8 r, uint8 g, uint8 b);
|
||||
|
||||
/*
|
||||
* Draw a filled rectangle on the currently active display.
|
||||
* The color intensity scale for a normal pixel is from 0 to 255.
|
||||
* The color intensity scale for the reduced pixel is from 0 to 15.
|
||||
*
|
||||
* Parameters:
|
||||
* x - Parameter X of the upper left corner of the rectangle.
|
||||
* y - Parameter Y of the upper left corner of the rectangle.
|
||||
* w - The width of the rectangle.
|
||||
* h - The height of the rectangle.
|
||||
* r - The intensity of the red color.
|
||||
* g - The intensity of the green color.
|
||||
* b - The intensity of the blue color.
|
||||
*
|
||||
* Return: void
|
||||
*/
|
||||
void lcd_fillRect(uint8 x, uint8 y, uint8 w, uint8 h, uint8 r, uint8 g, uint8 b);
|
||||
|
||||
/*
|
||||
* Fill the entire screen with one color of the currently active display.
|
||||
* The color intensity scale for a normal pixel is from 0 to 255.
|
||||
* The color intensity scale for the reduced pixel is from 0 to 15.
|
||||
*
|
||||
* Parameters:
|
||||
* r - The intensity of the red color.
|
||||
* g - The intensity of the green color.
|
||||
* b - The intensity of the blue color.
|
||||
*
|
||||
* Return: void
|
||||
*/
|
||||
void lcd_fillScreen(uint8 r, uint8 g, uint8 b);
|
||||
|
||||
void lcd_printChar(uint8 x, uint8 y, char c);
|
||||
void lcd_printText(uint8 x, uint8 y, char* text);
|
||||
Loading…
Reference in New Issue
Block a user