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+#ifndef HWDEF_EMISAR_D1SV2_H
+#define HWDEF_EMISAR_D1SV2_H
+
+/* Emisar D1Sv2 driver layout (attiny1634)
+ *
+ * Pin / Name / Function
+ * 1 PA6 red aux LED (PWM1B)
+ * 2 PA5 green aux LED (PWM0B)
+ * 3 PA4 blue aux LED
+ * 4 PA3 battery voltage (ADC0)
+ * 5 PA2 (none)
+ * 6 PA1 (none)
+ * 7 PA0 (none)
+ * 8 GND GND
+ * 9 VCC VCC
+ * 10 PC5 (none)
+ * 11 PC4 (none)
+ * 12 PC3 RESET
+ * 13 PC2 (none)
+ * 14 PC1 SCK
+ * 15 PC0 (none) PWM0A
+ * 16 PB3 main LED PWM (PWM1A)
+ * 17 PB2 MISO
+ * 18 PB1 MOSI
+ * 19 PB0 Opamp power
+ * 20 PA7 e-switch (PCINT7)
+ * ADC12 thermal sensor
+ *
+ * Main LED power uses one pin to turn the Opamp on/off,
+ * and one pin to control Opamp power level.
+ * All brightness control uses the power level pin, with 4 kHz 10-bit PWM.
+ * The on/off pin is only used to turn the main LED on and off,
+ * not to change brightness.
+ */
+
+#ifdef ATTINY
+#undef ATTINY
+#endif
+#define ATTINY 1634
+#include <avr/io.h>
+
+#define PWM_CHANNELS 1
+#define PWM_BITS 10 // 0 to 1023 at 4 kHz, not 0 to 255 at 16 kHz
+
+#define SWITCH_PIN PA7 // pin 20
+#define SWITCH_PCINT PCINT7 // pin 20 pin change interrupt
+#define SWITCH_PCIE PCIE0 // PCIE0 is for PCINT[7:0]
+#define SWITCH_PCMSK PCMSK0 // PCMSK0 is for PCINT[7:0]
+#define SWITCH_PORT PINA // PINA or PINB or PINC
+
+#define PWM1_PIN PB3 // pin 16, Opamp reference
+#define PWM1_LVL OCR1A // OCR1A is the output compare register for PB3
+
+#define LED_ENABLE_PIN PB0 // pin 19, Opamp power
+//#define PWM2_PIN PB0 // pin 19, Opamp power
+// FIXME:
+//#define PWM2_LVL OCR1B // OCR1B is the output compare register for PB1
+
+
+#define ADC_PRSCL 0x06 // clk/64
+
+// average drop across diode on this hardware
+#ifndef VOLTAGE_FUDGE_FACTOR
+#define VOLTAGE_FUDGE_FACTOR 4 // add 0.20V (measured 0.22V)
+#endif
+
+#define TEMP_CHANNEL 0b00001111
+
+// this light has aux LEDs under the optic
+#define AUXLED_R_PIN PA6 // pin 1
+#define AUXLED_G_PIN PA5 // pin 2
+#define AUXLED_B_PIN PA4 // pin 3
+#define AUXLED_RGB_PORT PORTA // PORTA or PORTB or PORTC
+#define AUXLED_RGB_DDR DDRA // DDRA or DDRB or DDRC
+#define AUXLED_RGB_PUE PUEA // PUEA or PUEB or PUEC
+
+// with so many pins, doing this all with #ifdefs gets awkward...
+// ... so just hardcode it in each hwdef file instead
+inline void hwdef_setup() {
+ // enable output ports
+ // Opamp level and Opamp on/off
+ DDRB = (1 << PWM1_PIN)
+ | (1 << LED_ENABLE_PIN);
+ // aux R/G/B
+ DDRA = (1 << AUXLED_R_PIN)
+ | (1 << AUXLED_G_PIN)
+ | (1 << AUXLED_B_PIN)
+ ;
+
+ // configure PWM
+ // Setup PWM. F_pwm = F_clkio / 2 / N / TOP, where N = prescale factor, TOP = top of counter
+ // pre-scale for timer: N = 1
+ // WGM1[3:0]: 0,0,1,1: PWM, Phase Correct, 10-bit (DS table 12-5)
+ // CS1[2:0]: 0,0,1: clk/1 (No prescaling) (DS table 12-6)
+ // COM1A[1:0]: 1,0: PWM OC1A in the normal direction (DS table 12-4)
+ // COM1B[1:0]: 0,0: PWM OC1B disabled (DS table 12-4)
+ TCCR1A = (1<<WGM11) | (1<<WGM10) // 10-bit (TOP=0x03FF) (DS table 12-5)
+ | (1<<COM1A1) | (0<<COM1A0) // PWM 1A in normal direction (DS table 12-4)
+ | (0<<COM1B1) | (0<<COM1B0) // PWM 1B in normal direction (DS table 12-4)
+ ;
+ TCCR1B = (0<<CS12) | (0<<CS11) | (1<<CS10) // clk/1 (no prescaling) (DS table 12-6)
+ | (0<<WGM13) | (0<<WGM12) // phase-correct PWM (DS table 12-5)
+ ;
+
+ // set up e-switch
+ //PORTA = (1 << SWITCH_PIN); // TODO: configure PORTA / PORTB / PORTC?
+ PUEA = (1 << SWITCH_PIN); // pull-up for e-switch
+ SWITCH_PCMSK = (1 << SWITCH_PCINT); // enable pin change interrupt
+}
+
+#define LAYOUT_DEFINED
+
+#endif