1 files changed, 114 insertions, 0 deletions
diff --git a/hwdef-blf-lt1.h b/hwdef-blf-lt1.h
new file mode 100644
index 0000000..b113fd4
--- /dev/null
+++ b/hwdef-blf-lt1.h
@@ -0,0 +1,114 @@
+// BLF LT1 driver layout
+// Copyright (C) 2018-2023 Selene ToyKeeper
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+/*
+ *           ----
+ *   Reset -|1  8|- VCC
+ * eswitch -|2  7|- (unused)
+ * aux LED -|3  6|- PWM (5000K)
+ *     GND -|4  5|- PWM (3000K)
+ *           ----
+ */
+
+#define ATTINY 85
+#include <avr/io.h>
+
+#define HWDEF_C_FILE hwdef-blf-lt1.c
+
+// channel modes:
+// * 0. channel 1 only
+// * 1. channel 2 only
+// * 2. both channels, tied together, max "200%" power
+// * 3. both channels, manual blend, max "100%" power
+// * 4. both channels, auto blend, reversible
+#define NUM_CHANNEL_MODES   5
+enum channel_modes_e {
+    CM_CH1 = 0,
+    CM_CH2,
+    CM_BOTH,
+    CM_BLEND,
+    CM_AUTO,
+};
+
+
+// right-most bit first, modes are in fedcba9876543210 order
+#define CHANNEL_MODES_ENABLED 0b00011000
+#define USE_CHANNEL_MODE_ARGS
+// _, _, _, 128=middle CCT, 0=warm-to-cool
+#define CHANNEL_MODE_ARGS     0,0,0,128,0
+
+// can use some of the common handlers
+#define USE_CALC_2CH_BLEND
+
+
+#define PWM_CHANNELS   1  // old, remove this
+
+#define PWM_BITS      16  // 8-bit hardware PWM + 16-bit DSM
+
+#define PWM_GET       PWM_GET16
+#define PWM_DATATYPE  uint16_t
+#define PWM_DATATYPE2 uint32_t  // only needs 32-bit if ramp values go over 255
+#define PWM1_DATATYPE uint16_t  // 15-bit PWM+DSM ramp
+
+// PWM parameters of both channels are tied together because they share a counter
+#define PWM_TOP_INIT  255
+#define DSM_TOP       (255<<7) // 15-bit resolution leaves 1 bit for carry
+
+// timer interrupt for DSM
+#define DSM_vect     TIMER0_OVF_vect
+#define DSM_INTCTRL  TIMSK
+#define DSM_OVF_bm   (1<<TOIE0)
+
+#define DELAY_FACTOR 90  // less time in delay() because more time spent in interrupts
+
+// warm LEDs
+uint16_t ch1_dsm_lvl;
+uint8_t ch1_pwm, ch1_dsm;
+#define CH1_PIN  PB1        // pin 6, warm tint PWM
+#define CH1_PWM  OCR0B      // OCR0B is the output compare register for PB1
+
+// cold LEDs
+uint16_t ch2_dsm_lvl;
+uint8_t ch2_pwm, ch2_dsm;
+#define CH2_PIN  PB0        // pin 5, cold tint PWM
+#define CH2_PWM  OCR0A      // OCR0A is the output compare register for PB0
+
+// lighted button
+#define AUXLED_PIN   PB4    // pin 3
+
+// e-switch
+#define SWITCH_PIN   PB3    // pin 2
+#define SWITCH_PCINT PCINT3 // pin 2 pin change interrupt
+
+#define ADC_PRSCL   0x07    // clk/128
+
+// average drop across diode on this hardware
+#ifndef VOLTAGE_FUDGE_FACTOR
+#define VOLTAGE_FUDGE_FACTOR 7  // add 0.35V
+#endif
+
+#define FAST 0xA3           // fast PWM both channels
+#define PHASE 0xA1          // phase-correct PWM both channels
+
+
+inline void hwdef_setup() {
+    // configure PWM channels
+    DDRB = (1 << CH1_PIN)
+         | (1 << CH2_PIN);
+
+    TCCR0B = 0x01; // pre-scaler for timer (1 => 1, 2 => 8, 3 => 64...)
+    TCCR0A = PHASE;
+
+    // enable timer overflow interrupt for DSM purposes
+    //DSM_INTCTRL |= DSM_OVF_bm;  // moved to hwdef.c functions instead
+
+    // configure e-switch
+    PORTB = (1 << SWITCH_PIN);  // e-switch is the only input
+    PCMSK = (1 << SWITCH_PIN);  // pin change interrupt uses this pin
+}
+
+
+#define LAYOUT_DEFINED
+