1 files changed, 172 insertions, 0 deletions

diff --git a/keyboards/cu75/cu75.c b/keyboards/cu75/cu75.c
new file mode 100644
index 000000000..273dd0927
--- /dev/null
+++ b/keyboards/cu75/cu75.c
@@ -0,0 +1,172 @@
+#include <avr/sfr_defs.h>
+#include <avr/timer_avr.h>
+#include <avr/wdt.h>
+#include "cu75.h"
+#include "keymap.h"
+#include "debug.h"
+#include "../lfkeyboards/issi.h"
+#include "../lfkeyboards/TWIlib.h"
+#include "../lfkeyboards/lighting.h"
+
+#ifdef AUDIO_ENABLE
+float test_sound[][2] = SONG(STARTUP_SOUND);
+#include "audio.h"
+#endif
+
+uint16_t click_hz = CLICK_HZ;
+uint16_t click_time = CLICK_MS;
+uint8_t click_toggle = CLICK_ENABLED;
+
+
+void matrix_init_kb(void)
+{
+    // put your keyboard start-up code here
+    // runs once when the firmware starts up
+    matrix_init_user();
+
+#ifdef AUDIO_ENABLE
+    audio_init();
+    PLAY_SONG(test_sound);
+    // Fix port B5
+    setPinInput(B5);
+    writePinHigh(B5);
+#else
+    // If we're not using the audio pin, drive it low
+    setPinOutput(C6);
+    writePinLow(C6);
+#endif
+#ifdef ISSI_ENABLE
+    issi_init();
+#endif
+}
+
+void matrix_scan_kb(void)
+{
+#ifdef WATCHDOG_ENABLE
+    wdt_reset();
+#endif
+#ifdef ISSI_ENABLE
+    // switch/underglow lighting update
+    static uint32_t issi_device = 0;
+    static uint32_t twi_last_ready = 0;
+    if(twi_last_ready > 1000){
+        // Its been way too long since the last ISSI update, reset the I2C bus and start again
+        dprintf("TWI failed to recover, TWI re-init\n");
+        twi_last_ready = 0;
+        TWIInit();
+        force_issi_refresh();
+    }
+    if(isTWIReady()){
+        twi_last_ready = 0;
+        // If the i2c bus is available, kick off the issi update, alternate between devices
+        update_issi(issi_device, issi_device);
+        if(issi_device){
+            issi_device = 0;
+        }else{
+            issi_device = 3;
+        }
+    }else{
+        twi_last_ready++;
+    }
+#endif
+    matrix_scan_user();
+}
+
+void click(uint16_t freq, uint16_t duration){
+#ifdef AUDIO_ENABLE
+    if(freq >= 100 && freq <= 20000 && duration < 100){
+        play_note(freq, 10);
+        for (uint16_t i = 0; i < duration; i++){
+            _delay_ms(1);
+        }
+        stop_all_notes();
+    }
+#endif
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t* record)
+{
+    // Test code that turns on the switch led for the key that is pressed
+    // set_backlight_by_keymap(record->event.key.col, record->event.key.row);
+    if (click_toggle && record->event.pressed){
+        click(click_hz, click_time);
+    }
+    if (keycode == RESET) {
+        reset_keyboard_kb();
+    } else {
+    }
+    return process_record_user(keycode, record);
+}
+
+void action_function(keyrecord_t *event, uint8_t id, uint8_t opt)
+{
+#ifdef AUDIO_ENABLE
+    int8_t sign = 1;
+#endif
+    if(id == LFK_ESC_TILDE){
+        // Send ~ on shift-esc
+        void (*method)(uint8_t) = (event->event.pressed) ? &add_key : &del_key;
+        uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+        method(shifted ? KC_GRAVE : KC_ESCAPE);
+        send_keyboard_report();
+    }else if(event->event.pressed){
+        switch(id){
+            case LFK_SET_DEFAULT_LAYER:
+                // set/save the current base layer to eeprom, falls through to LFK_CLEAR
+                eeconfig_update_default_layer(1UL << opt);
+                default_layer_set(1UL << opt);
+            case LFK_CLEAR:
+                // Go back to default layer
+                layer_clear();
+                break;
+#ifdef AUDIO_ENABLE
+            case LFK_CLICK_FREQ_LOWER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_FREQ_HIGHER:
+                click_hz += sign * 100;
+                click(click_hz, click_time);
+                break;
+            case LFK_CLICK_TOGGLE:
+                if(click_toggle){
+                    click_toggle = 0;
+                    click(4000, 100);
+                    click(1000, 100);
+                }else{
+                    click_toggle = 1;
+                    click(1000, 100);
+                    click(4000, 100);
+                }
+                break;
+            case LFK_CLICK_TIME_SHORTER:
+                sign = -1;  // continue to next statement
+            case LFK_CLICK_TIME_LONGER:
+                click_time += sign;
+                click(click_hz, click_time);
+                break;
+#endif
+            case LFK_DEBUG_SETTINGS:
+                dprintf("Click:\n");
+                dprintf("  toggle: %d\n", click_toggle);
+                dprintf("  freq(hz): %d\n", click_hz);
+                dprintf("  duration(ms): %d\n", click_time);
+                break;
+        }
+    }
+}
+
+void reset_keyboard_kb(){
+#ifdef WATCHDOG_ENABLE
+    MCUSR = 0;
+    wdt_disable();
+    wdt_reset();
+#endif
+    reset_keyboard();
+}
+
+// LFK lighting info
+const uint8_t switch_matrices[] = {0, 1};
+const uint8_t rgb_matrices[] = {6, 7};
+const uint8_t rgb_sequence[] = {
+    24, 23, 22, 21, 20, 19, 18, 17, 1, 2, 3, 4, 5,
+    6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 9
+};