@@ -0,0 +1,152 @@ | |||
/** | |||
* 8x8 monochrome bitmap fonts for rendering | |||
* Author: Daniel Hepper <daniel@hepper.net> | |||
* | |||
* License: Public Domain | |||
* | |||
* Based on: | |||
* // Summary: font8x8.h | |||
* // 8x8 monochrome bitmap fonts for rendering | |||
* // | |||
* // Author: | |||
* // Marcel Sondaar | |||
* // International Business Machines (public domain VGA fonts) | |||
* // | |||
* // License: | |||
* // Public Domain | |||
* | |||
* Fetched from: http://dimensionalrift.homelinux.net/combuster/mos3/?p=viewsource&file=/modules/gfx/font8_8.asm | |||
**/ | |||
// Constant: font8x8_basic | |||
// Contains an 8x8 font map for unicode points U+0000 - U+007F (basic latin) | |||
char font8x8_basic[128][8] = { | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0000 (nul) | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0001 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0002 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0003 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0004 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0005 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0006 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0007 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0008 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0009 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000A | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000B | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000C | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000D | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000E | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000F | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0010 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0011 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0012 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0013 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0014 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0015 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0016 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0017 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0018 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0019 | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001A | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001B | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001C | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001D | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001E | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001F | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0020 (space) | |||
{ 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00}, // U+0021 (!) | |||
{ 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0022 (") | |||
{ 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00}, // U+0023 (#) | |||
{ 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00}, // U+0024 ($) | |||
{ 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00}, // U+0025 (%) | |||
{ 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00}, // U+0026 (&) | |||
{ 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0027 (') | |||
{ 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00}, // U+0028 (() | |||
{ 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00}, // U+0029 ()) | |||
{ 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00}, // U+002A (*) | |||
{ 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00}, // U+002B (+) | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+002C (,) | |||
{ 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00}, // U+002D (-) | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+002E (.) | |||
{ 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00}, // U+002F (/) | |||
{ 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0) | |||
{ 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1) | |||
{ 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2) | |||
{ 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3) | |||
{ 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4) | |||
{ 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5) | |||
{ 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6) | |||
{ 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7) | |||
{ 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+0038 (8) | |||
{ 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00}, // U+0039 (9) | |||
{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+003A (:) | |||
{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+003B (;) | |||
{ 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00}, // U+003C (<) | |||
{ 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00}, // U+003D (=) | |||
{ 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00}, // U+003E (>) | |||
{ 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00}, // U+003F (?) | |||
{ 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00}, // U+0040 (@) | |||
{ 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}, // U+0041 (A) | |||
{ 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00}, // U+0042 (B) | |||
{ 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00}, // U+0043 (C) | |||
{ 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00}, // U+0044 (D) | |||
{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00}, // U+0045 (E) | |||
{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00}, // U+0046 (F) | |||
{ 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00}, // U+0047 (G) | |||
{ 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00}, // U+0048 (H) | |||
{ 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0049 (I) | |||
{ 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00}, // U+004A (J) | |||
{ 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00}, // U+004B (K) | |||
{ 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00}, // U+004C (L) | |||
{ 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00}, // U+004D (M) | |||
{ 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00}, // U+004E (N) | |||
{ 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00}, // U+004F (O) | |||
{ 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00}, // U+0050 (P) | |||
{ 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00}, // U+0051 (Q) | |||
{ 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00}, // U+0052 (R) | |||
{ 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00}, // U+0053 (S) | |||
{ 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0054 (T) | |||
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00}, // U+0055 (U) | |||
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0056 (V) | |||
{ 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00}, // U+0057 (W) | |||
{ 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00}, // U+0058 (X) | |||
{ 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00}, // U+0059 (Y) | |||
{ 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00}, // U+005A (Z) | |||
{ 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00}, // U+005B ([) | |||
{ 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00}, // U+005C (\) | |||
{ 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00}, // U+005D (]) | |||
{ 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00}, // U+005E (^) | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF}, // U+005F (_) | |||
{ 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0060 (`) | |||
{ 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00}, // U+0061 (a) | |||
{ 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00}, // U+0062 (b) | |||
{ 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00}, // U+0063 (c) | |||
{ 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00}, // U+0064 (d) | |||
{ 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00}, // U+0065 (e) | |||
{ 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00}, // U+0066 (f) | |||
{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0067 (g) | |||
{ 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00}, // U+0068 (h) | |||
{ 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0069 (i) | |||
{ 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E}, // U+006A (j) | |||
{ 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00}, // U+006B (k) | |||
{ 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+006C (l) | |||
{ 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00}, // U+006D (m) | |||
{ 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00}, // U+006E (n) | |||
{ 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+006F (o) | |||
{ 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F}, // U+0070 (p) | |||
{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78}, // U+0071 (q) | |||
{ 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00}, // U+0072 (r) | |||
{ 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00}, // U+0073 (s) | |||
{ 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00}, // U+0074 (t) | |||
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00}, // U+0075 (u) | |||
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0076 (v) | |||
{ 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00}, // U+0077 (w) | |||
{ 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00}, // U+0078 (x) | |||
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0079 (y) | |||
{ 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00}, // U+007A (z) | |||
{ 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00}, // U+007B ({) | |||
{ 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, // U+007C (|) | |||
{ 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00}, // U+007D (}) | |||
{ 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007E (~) | |||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} // U+007F | |||
}; |
@@ -0,0 +1,75 @@ | |||
#include <stdio.h> | |||
#include "st7735.h" | |||
#include <wiringPi.h> | |||
int main(int argc, char *argv[]) | |||
{ | |||
setbuf(stdout, NULL); | |||
wiringPiSetup(); | |||
lcd_t* lcd = lcd_init(40000000, 10, 2, 0); | |||
printf("Fill display..."); | |||
printf("blue..."); | |||
lcd_fillScreen(0, 70, 160); | |||
delay(1000); | |||
printf("black..."); | |||
lcd_fillScreen(0, 0, 0); | |||
printf("DONE\n"); | |||
delay(1000); | |||
/* Draw the lines */ | |||
/*printf("Lines..."); | |||
lcdst_drawHLine(0, 149, 128, 0, 255, 255); | |||
lcdst_drawHLine(0, 139, 128, 255, 255, 0); | |||
lcdst_drawVLine(117, 0, 160, 0, 255, 255); | |||
lcdst_drawVLine(107, 0, 160, 255, 255, 0); | |||
printf("DONE\n");*/ | |||
/*printf("Points..."); | |||
for (int i = 1; i < 20; i++) { | |||
lcdst_drawPx(5 - 1, 70 + i, 100, 100, 100); | |||
lcdst_drawPx(5 + i + 1, 70 + i, 100, 100, 100); | |||
} | |||
printf("DONE\n"); | |||
printf("Triangle..."); | |||
for (int i = 1; i < 20; i++) { | |||
lcdst_drawHLine(5, 70 + i, i, 255, 0, 0); | |||
} | |||
printf("DONE\n");*/ | |||
printf("Rectangles..."); | |||
//printf("outline..."); | |||
//lcd_drawRect(10, 10, 10, 10, 0, 255, 255); | |||
//lcd_drawRect(10, 30, 10, 10, 255, 255, 0); | |||
printf("filled..."); | |||
lcd_fillRect(30, 10, 10, 10, 0, 255, 255); | |||
lcd_fillRect(30, 30, 10, 10, 255, 255, 0); | |||
printf("bunch..."); | |||
for (int i = 0; i < 40; i++) { | |||
lcd_fillRect(40 + (i%13) * 4, 40 + (i%19) * 4, 20, 20, i % 5 * 15, i % 7 * 17, i % 3 * 23); | |||
} | |||
printf("DONE\n"); | |||
printf("Text..."); | |||
lcd_printChar(10, 90, 'A'); | |||
lcd_printText(10, 50, "Ahoj!"); | |||
lcd_printChar(10, 100, 'Z'); | |||
printf("DONE\n"); | |||
/* Send the raw data */ | |||
/* printf("Raw..."); | |||
lcdst_setWindow(20, 20, 29, 29); | |||
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; | |||
} | |||
@@ -0,0 +1,3 @@ | |||
project('dejvino-ST7735', 'c') | |||
src = ['main.c', 'st7735.c'] | |||
executable('st7735', src, link_args: '-lwiringPi') |
@@ -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]); | |||
} | |||
} | |||
@@ -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); |