added a tiny font, fixed int types, improved debug output, related to #…

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PPUC · Jan 16, 2024 · 56a7781 · 56a7781
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commit 56a7781
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diff --git a/src/fonts/tiny4x6.h b/src/fonts/tiny4x6.h
@@ -0,0 +1,122 @@
+// A Tiny 4x6 Pixel Font That Will Fit On Almost Any Microcontroller (License: MIT)
+// https://hackaday.io/project/6309-vga-graphics-over-spi-and-serial-vgatonic/log/20759-a-tiny-4x6-pixel-font-that-will-fit-on-almost-any-microcontroller-license-mit
+
+// Font Definition
+const uint8_t font4x6[96][2] = {
+    {0x00, 0x00}, /*SPACE*/
+    {0x49, 0x08}, /*'!'*/
+    {0xb4, 0x00}, /*'"'*/
+    {0xbe, 0xf6}, /*'#'*/
+    {0x7b, 0x7a}, /*'$'*/
+    {0xa5, 0x94}, /*'%'*/
+    {0x55, 0xb8}, /*'&'*/
+    {0x48, 0x00}, /*'''*/
+    {0x29, 0x44}, /*'('*/
+    {0x44, 0x2a}, /*')'*/
+    {0x15, 0xa0}, /*'*'*/
+    {0x0b, 0x42}, /*'+'*/
+    {0x00, 0x50}, /*','*/
+    {0x03, 0x02}, /*'-'*/
+    {0x00, 0x08}, /*'.'*/
+    {0x25, 0x90}, /*'/'*/
+    {0x76, 0xba}, /*'0'*/
+    {0x59, 0x5c}, /*'1'*/
+    {0xc5, 0x9e}, /*'2'*/
+    {0xc5, 0x38}, /*'3'*/
+    {0x92, 0xe6}, /*'4'*/
+    {0xf3, 0x3a}, /*'5'*/
+    {0x73, 0xba}, /*'6'*/
+    {0xe5, 0x90}, /*'7'*/
+    {0x77, 0xba}, /*'8'*/
+    {0x77, 0x3a}, /*'9'*/
+    {0x08, 0x40}, /*':'*/
+    {0x08, 0x50}, /*';'*/
+    {0x2a, 0x44}, /*'<'*/
+    {0x1c, 0xe0}, /*'='*/
+    {0x88, 0x52}, /*'>'*/
+    {0xe5, 0x08}, /*'?'*/
+    {0x56, 0x8e}, /*'@'*/
+    {0x77, 0xb6}, /*'A'*/
+    {0x77, 0xb8}, /*'B'*/
+    {0x72, 0x8c}, /*'C'*/
+    {0xd6, 0xba}, /*'D'*/
+    {0x73, 0x9e}, /*'E'*/
+    {0x73, 0x92}, /*'F'*/
+    {0x72, 0xae}, /*'G'*/
+    {0xb7, 0xb6}, /*'H'*/
+    {0xe9, 0x5c}, /*'I'*/
+    {0x64, 0xaa}, /*'J'*/
+    {0xb7, 0xb4}, /*'K'*/
+    {0x92, 0x9c}, /*'L'*/
+    {0xbe, 0xb6}, /*'M'*/
+    {0xd6, 0xb6}, /*'N'*/
+    {0x56, 0xaa}, /*'O'*/
+    {0xd7, 0x92}, /*'P'*/
+    {0x76, 0xee}, /*'Q'*/
+    {0x77, 0xb4}, /*'R'*/
+    {0x71, 0x38}, /*'S'*/
+    {0xe9, 0x48}, /*'T'*/
+    {0xb6, 0xae}, /*'U'*/
+    {0xb6, 0xaa}, /*'V'*/
+    {0xb6, 0xf6}, /*'W'*/
+    {0xb5, 0xb4}, /*'X'*/
+    {0xb5, 0x48}, /*'Y'*/
+    {0xe5, 0x9c}, /*'Z'*/
+    {0x69, 0x4c}, /*'['*/
+    {0x91, 0x24}, /*'\'*/
+    {0x64, 0x2e}, /*']'*/
+    {0x54, 0x00}, /*'^'*/
+    {0x00, 0x1c}, /*'_'*/
+    {0x44, 0x00}, /*'`'*/
+    {0x0e, 0xae}, /*'a'*/
+    {0x9a, 0xba}, /*'b'*/
+    {0x0e, 0x8c}, /*'c'*/
+    {0x2e, 0xae}, /*'d'*/
+    {0x0e, 0xce}, /*'e'*/
+    {0x56, 0xd0}, /*'f'*/
+    {0x55, 0x3B}, /*'g'*/
+    {0x93, 0xb4}, /*'h'*/
+    {0x41, 0x44}, /*'i'*/
+    {0x41, 0x51}, /*'j'*/
+    {0x97, 0xb4}, /*'k'*/
+    {0x49, 0x44}, /*'l'*/
+    {0x17, 0xb6}, /*'m'*/
+    {0x1a, 0xb6}, /*'n'*/
+    {0x0a, 0xaa}, /*'o'*/
+    {0xd6, 0xd3}, /*'p'*/
+    {0x76, 0x67}, /*'q'*/
+    {0x17, 0x90}, /*'r'*/
+    {0x0f, 0x38}, /*'s'*/
+    {0x9a, 0x8c}, /*'t'*/
+    {0x16, 0xae}, /*'u'*/
+    {0x16, 0xba}, /*'v'*/
+    {0x16, 0xf6}, /*'w'*/
+    {0x15, 0xb4}, /*'x'*/
+    {0xb5, 0x2b}, /*'y'*/
+    {0x1c, 0x5e}, /*'z'*/
+    {0x6b, 0x4c}, /*'{'*/
+    {0x49, 0x48}, /*'|'*/
+    {0xc9, 0x5a}, /*'}'*/
+    {0x54, 0x00}, /*'~'*/
+    {0x56, 0xe2}  /*''*/
+};
+
+// Font retreival function - ugly, but needed.
+char getFontLine(const char data, uint8_t line_num) {
+  const uint8_t index = (data - 32);
+  char pixel = 0;
+  if (font4x6[index][1] & 1 == 1) line_num -= 1;
+  if (line_num == 0) {
+    pixel = font4x6[index][0] >> 4;
+  } else if (line_num == 1) {
+    pixel = font4x6[index][0] >> 1;
+  } else if (line_num == 2) {
+    // Split over 2 bytes
+    return ((font4x6[index][0] & 0x03) << 2) | (font4x6[index][1] & 0x02);
+  } else if (line_num == 3) {
+    pixel = font4x6[index][1] >> 4;
+  } else if (line_num == 4) {
+    pixel = font4x6[index][1] >> 1;
+  }
+  return pixel & 0xe;
+}