merged Noctigon KR4 and K1-12V (XHP35) branches

(also includes some minor thermal updates to make it faster, more stable, and easier to tweak per host)
(and some code to prevent eeprom corruption while turning power chips on/off)
(and enables reboot function on tiny1634)
(and makes rainbow aux RGB mode speed configurable per host)
(and calibrates the original K1 a bit better)

1 files changed, 147 insertions, 0 deletions

diff --git a/hwdef-Noctigon_KR4.h b/hwdef-Noctigon_KR4.h
new file mode 100644
index 0000000..4eec585
--- /dev/null
+++ b/hwdef-Noctigon_KR4.h
@@ -0,0 +1,147 @@
+#ifndef HWDEF_NOCTIGON_KR4_H
+#define HWDEF_NOCTIGON_KR4_H
+
+/* Noctigon KR4 driver layout (attiny1634)
+ *
+ * Pin / Name / Function
+ *   1    PA6   FET PWM (direct drive) (PWM1B)
+ *   2    PA5   R: red aux LED (PWM0B)
+ *   3    PA4   G: green aux LED
+ *   4    PA3   B: blue aux LED
+ *   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 (linear) (PWM1A)
+ *  17    PB2   MISO / e-switch (PCINT10)
+ *  18    PB1   MOSI / battery voltage (ADC6)
+ *  19    PB0   Opamp power
+ *  20    PA7   (none)
+ *      ADC12   thermal sensor
+ *
+ * Main LED power uses one pin to turn the Opamp on/off,
+ * and one pin to control Opamp power level.
+ * Main 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.
+ * Some models also have a direct-drive FET for turbo.
+ */
+
+#ifdef ATTINY
+#undef ATTINY
+#endif
+#define ATTINY 1634
+#include <avr/io.h>
+
+#define PWM_CHANNELS 2
+#define PWM_BITS 10  // 0 to 1023 at 4 kHz, not 0 to 255 at 16 kHz
+#define PWM_TOP 1023
+
+#define SWITCH_PIN   PB2     // pin 17
+#define SWITCH_PCINT PCINT10 // pin 17 pin change interrupt
+#define SWITCH_PCIE  PCIE1   // PCIE1 is for PCINT[11:8]
+#define SWITCH_PCMSK PCMSK1  // PCMSK1 is for PCINT[11:8]
+#define SWITCH_PORT  PINB    // PINA or PINB or PINC
+#define PCINT_vect   PCINT1_vect  // ISR for PCINT[11:8]
+
+// the button tends to short out the voltage divider,
+// so ignore voltage while the button is being held
+//#define NO_LVP_WHILE_BUTTON_PRESSED
+
+
+#define PWM1_PIN PB3        // pin 16, Opamp reference
+#define PWM1_LVL OCR1A      // OCR1A is the output compare register for PB3
+
+#define PWM2_PIN PA6        // pin 1, DD FET PWM
+#define PWM2_LVL OCR1B      // OCR1B is the output compare register for PA6
+
+#define LED_ENABLE_PIN  PB0    // pin 19, Opamp power
+#define LED_ENABLE_PORT PORTB  // control port for PB0
+
+
+#define USE_VOLTAGE_DIVIDER  // use a dedicated pin, not VCC, because VCC input is flattened
+#define VOLTAGE_PIN PB1      // Pin 18 / PB1 / ADC6
+// pin to ADC mappings are in DS table 19-4
+#define VOLTAGE_ADC      ADC6D  // digital input disable pin for PB1
+// DIDR0/DIDR1 mappings are in DS section 19.13.5, 19.13.6
+#define VOLTAGE_ADC_DIDR DIDR1  // DIDR channel for ADC6D
+// DS tables 19-3, 19-4
+// Bit   7     6     5      4     3    2    1    0
+//     REFS1 REFS0 REFEN ADC0EN MUX3 MUX2 MUX1 MUX0
+// MUX[3:0] = 0, 1, 1, 0 for ADC6 / PB1
+// divided by ...
+// REFS[1:0] = 1, 0 for internal 1.1V reference
+// other bits reserved
+#define ADMUX_VOLTAGE_DIVIDER 0b10000110
+#define ADC_PRSCL   0x07    // clk/128
+
+// TODO: calibrate this
+// Raw ADC readings at 4.4V and 2.2V
+// calibrate the voltage readout here
+// estimated / calculated values are:
+//   (voltage - D1) * (R2/(R2+R1) * 256 / 1.1)
+// D1, R1, R2 = 0, 330, 100
+#ifndef ADC_44
+//#define ADC_44 981  // raw value at 4.40V
+#define ADC_44 967  // manually tweaked so 4.16V will blink out 4.2
+#endif
+#ifndef ADC_22
+//#define ADC_22 489  // raw value at 2.20V
+#define ADC_22 482  // manually tweaked so 4.16V will blink out 4.2
+#endif
+
+#define TEMP_CHANNEL 0b00001111
+
+// this light has aux LEDs under the optic
+#define AUXLED_R_PIN    PA5    // pin 2
+#define AUXLED_G_PIN    PA4    // pin 3
+#define AUXLED_B_PIN    PA3    // pin 4
+#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);
+  // DD FET PWM, aux R/G/B
+  DDRA = (1 << PWM2_PIN)
+       | (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]:    1,0: PWM OC1B in the normal direction (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)
+          | (1<<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
+  //PORTB = (1 << SWITCH_PIN);  // TODO: configure PORTA / PORTB / PORTC?
+  PUEB = (1 << SWITCH_PIN);  // pull-up for e-switch
+  SWITCH_PCMSK = (1 << SWITCH_PCINT);  // enable pin change interrupt
+}
+
+#define LAYOUT_DEFINED
+
+#endif