1 files changed, 52 insertions, 0 deletions
diff --git a/firmware/src/font.hpp b/firmware/src/font.hpp
new file mode 100644
index 0000000..5f4f4bc
--- /dev/null
+++ b/firmware/src/font.hpp
@@ -0,0 +1,52 @@
+// ============================================================
+// Tiny 5x7 font: digits, letters and punctuation
+// ============================================================
+
+struct Glyph {
+    char character;
+    uint8_t columns[5];
+};
+
+static const Glyph font[] = {
+    {' ', {0x00,0x00,0x00,0x00,0x00}},
+    {'.', {0x00,0x60,0x60,0x00,0x00}},
+    {':', {0x00,0x36,0x36,0x00,0x00}},
+    {'-', {0x08,0x08,0x08,0x08,0x08}},
+    {'+', {0x08,0x08,0x3E,0x08,0x08}},
+    {'0', {0x3E,0x51,0x49,0x45,0x3E}},
+    {'1', {0x00,0x42,0x7F,0x40,0x00}},
+    {'2', {0x42,0x61,0x51,0x49,0x46}},
+    {'3', {0x21,0x41,0x45,0x4B,0x31}},
+    {'4', {0x18,0x14,0x12,0x7F,0x10}},
+    {'5', {0x27,0x45,0x45,0x45,0x39}},
+    {'6', {0x3C,0x4A,0x49,0x49,0x30}},
+    {'7', {0x01,0x71,0x09,0x05,0x03}},
+    {'8', {0x36,0x49,0x49,0x49,0x36}},
+    {'9', {0x06,0x49,0x49,0x29,0x1E}},
+    {'A', {0x7E,0x11,0x11,0x11,0x7E}},
+    {'C', {0x3E,0x41,0x41,0x41,0x22}},
+    {'E', {0x7F,0x49,0x49,0x49,0x41}},
+    {'H', {0x7F,0x08,0x08,0x08,0x7F}},
+    {'I', {0x00,0x41,0x7F,0x41,0x00}},
+    {'M', {0x7F,0x02,0x0C,0x02,0x7F}},
+    {'N', {0x7F,0x04,0x08,0x10,0x7F}},
+    {'O', {0x3E,0x41,0x41,0x41,0x3E}},
+    {'P', {0x7F,0x09,0x09,0x09,0x06}},
+    {'R', {0x7F,0x09,0x19,0x29,0x46}},
+    {'S', {0x46,0x49,0x49,0x49,0x31}},
+    {'T', {0x01,0x01,0x7F,0x01,0x01}},
+    {'U', {0x3F,0x40,0x40,0x40,0x3F}},
+    {'X', {0x63,0x14,0x08,0x14,0x63}},
+    {'Y', {0x07,0x08,0x70,0x08,0x07}}
+};
+
+static const Glyph *find_glyph(char character)
+{
+    for (const Glyph &glyph : font) {
+        if (glyph.character == character) {
+            return &glyph;
+        }
+    }
+
+    return nullptr;
+}