refactor: break out different areas of functionality

1 files changed, 217 insertions, 0 deletions

diff --git a/watch-library/watch/watch_slcd.c b/watch-library/watch/watch_slcd.c
new file mode 100644
index 00000000..cdade07f
--- /dev/null
+++ b/watch-library/watch/watch_slcd.c
@@ -0,0 +1,217 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 Joey Castillo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+ //////////////////////////////////////////////////////////////////////////////////////////
+// Segmented Display
+
+static const uint8_t Character_Set[] =
+{
+    0b00000000, //  
+    0b00000000, // ! (unused)
+    0b00100010, // "
+    0b01100011, // # (degree symbol, hash mark doesn't fit)
+    0b00000000, // $ (unused)
+    0b00000000, // % (unused)
+    0b01000100, // & ("lowercase 7" for positions 4 and 6)
+    0b00100000, // '
+    0b00111001, // (
+    0b00001111, // )
+    0b00000000, // * (unused)
+    0b11000000, // + (only works in position 0)
+    0b00000100, // ,
+    0b01000000, // -
+    0b01000000, // . (same as -, semantically most useful)
+    0b00010010, // /
+    0b00111111, // 0
+    0b00000110, // 1
+    0b01011011, // 2
+    0b01001111, // 3
+    0b01100110, // 4
+    0b01101101, // 5
+    0b01111101, // 6
+    0b00000111, // 7
+    0b01111111, // 8
+    0b01101111, // 9
+    0b00000000, // : (unused)
+    0b00000000, // ; (unused)
+    0b01011000, // <
+    0b01001000, // =
+    0b01001100, // >
+    0b01010011, // ?
+    0b11111111, // @ (all segments on)
+    0b01110111, // A
+    0b01111111, // B
+    0b00111001, // C
+    0b00111111, // D
+    0b01111001, // E
+    0b01110001, // F
+    0b00111101, // G
+    0b01110110, // H
+    0b10001001, // I (only works in position 0)
+    0b00001110, // J
+    0b01110101, // K
+    0b00111000, // L
+    0b10110111, // M (only works in position 0)
+    0b00110111, // N
+    0b00111111, // O
+    0b01110011, // P
+    0b01100111, // Q
+    0b11110111, // R (only works in position 1)
+    0b01101101, // S
+    0b10000001, // T (only works in position 0; set (1, 12) to make it work in position 1)
+    0b00111110, // U
+    0b00111110, // V
+    0b10111110, // W (only works in position 0)
+    0b01111110, // X
+    0b01101110, // Y
+    0b00011011, // Z
+    0b00111001, // [
+    0b00100100, // backslash
+    0b00001111, // ]
+    0b00100011, // ^
+    0b00001000, // _
+    0b00000010, // `
+    0b01011111, // a
+    0b01111100, // b
+    0b01011000, // c
+    0b01011110, // d
+    0b01111011, // e
+    0b01110001, // f
+    0b01101111, // g
+    0b01110100, // h
+    0b00010000, // i
+    0b01000010, // j (appears as superscript to work in more positions)
+    0b01110101, // k
+    0b00110000, // l
+    0b10110111, // m (only works in position 0)
+    0b01010100, // n
+    0b01011100, // o
+    0b01110011, // p
+    0b01100111, // q
+    0b01010000, // r
+    0b01101101, // s
+    0b01111000, // t
+    0b01100010, // u (appears as superscript to work in more positions)
+    0b01100010, // v (appears as superscript to work in more positions)
+    0b10111110, // w (only works in position 0)
+    0b01111110, // x
+    0b01101110, // y
+    0b00011011, // z
+    0b00111001, // {
+    0b00110000, // |
+    0b00001111, // }
+    0b00000001, // ~
+};
+
+static const uint64_t Segment_Map[] = {
+    0x4e4f0e8e8f8d4d0d, // Position 0, mode
+    0xc8c4c4c8b4b4b0b,  // Position 1, mode (Segments B and C shared, as are segments E and F)
+    0xc049c00a49890949, // Position 2, day of month (Segments A, D, G shared; missing segment F)
+    0xc048088886874707, // Position 3, day of month
+    0xc053921252139352, // Position 4, clock hours (Segments A and D shared)
+    0xc054511415559594, // Position 5, clock hours
+    0xc057965616179716, // Position 6, clock minutes (Segments A and D shared)
+    0xc041804000018a81, // Position 7, clock minutes
+    0xc043420203048382, // Position 8, clock seconds
+    0xc045440506468584, // Position 9, clock seconds
+};
+
+static const uint8_t Num_Chars = 10;
+
+static const uint32_t IndicatorSegments[6] = {
+    SLCD_SEGID(0, 17), // WATCH_INDICATOR_SIGNAL
+    SLCD_SEGID(0, 16), // WATCH_INDICATOR_BELL
+    SLCD_SEGID(2, 17), // WATCH_INDICATOR_PM
+    SLCD_SEGID(2, 16), // WATCH_INDICATOR_24H
+    SLCD_SEGID(1, 10), // WATCH_INDICATOR_LAP
+};
+
+void watch_enable_display() {
+    SEGMENT_LCD_0_init();
+    slcd_sync_enable(&SEGMENT_LCD_0);
+}
+
+inline void watch_set_pixel(uint8_t com, uint8_t seg) {
+    slcd_sync_seg_on(&SEGMENT_LCD_0, SLCD_SEGID(com, seg));
+}
+
+inline void watch_clear_pixel(uint8_t com, uint8_t seg) {
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(com, seg));
+}
+
+void watch_display_character(uint8_t character, uint8_t position) {
+    // handle lowercase 7 if needed
+    if (character == '7' && (position == 4 || position == 6)) character = '&';
+
+    uint64_t segmap = Segment_Map[position];
+    uint64_t segdata = Character_Set[character - 0x20];
+
+    for (int i = 0; i < 8; i++) {
+        uint8_t com = (segmap & 0xFF) >> 6;
+        if (com > 2) {
+            // COM3 means no segment exists; skip it.
+            segmap = segmap >> 8;
+            segdata = segdata >> 1;
+            continue;
+        }
+        uint8_t seg = segmap & 0x3F;
+        slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(com, seg));
+        if (segdata & 1) slcd_sync_seg_on(&SEGMENT_LCD_0, SLCD_SEGID(com, seg));
+        segmap = segmap >> 8;
+        segdata = segdata >> 1;
+    }
+}
+
+void watch_display_string(char *string, uint8_t position) {
+    size_t i = 0;
+    while(string[i] != 0) {
+        watch_display_character(string[i], position + i);
+        i++;
+        if (i >= Num_Chars) break;
+    }
+}
+
+inline void watch_set_colon() {
+    slcd_sync_seg_on(&SEGMENT_LCD_0, SLCD_SEGID(1, 16));
+}
+
+inline void watch_clear_colon() {
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(1, 16));
+}
+
+inline void watch_set_indicator(WatchIndicatorSegment indicator) {
+    slcd_sync_seg_on(&SEGMENT_LCD_0, IndicatorSegments[indicator]);
+}
+
+inline void watch_clear_indicator(WatchIndicatorSegment indicator) {
+    slcd_sync_seg_off(&SEGMENT_LCD_0, IndicatorSegments[indicator]);
+}
+
+void watch_clear_all_indicators() {
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(2, 17));
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(2, 16));
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(0, 17));
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(0, 16));
+    slcd_sync_seg_off(&SEGMENT_LCD_0, SLCD_SEGID(1, 10));
+}