blob: a68d9c2be3ce13e8de24414ad62e7bece8129f9b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
// thefreeman's Linear 16 driver using DAC control
// Copyright (C) 2021-2023 thefreeman, Selene ToyKeeper
// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
/*
* PA6 - DAC for LED brightness control
* PA7 - Op-amp enable pin
* PB5 - Aux LED
* PB4 - Switch pin, internal pullup
* PB3 - HDR control, set High to enable the high power channel, set Low for low power
* Read voltage from VCC pin, has PFET so no drop
*/
#define HWDEF_C thefreeman/lin16dac/hwdef.c
// allow using aux LEDs as extra channel modes
#include "fsm/chan-aux.h"
// channel modes:
// * 0. main LEDs
// * 1+. aux RGB
#define NUM_CHANNEL_MODES 2
enum CHANNEL_MODES {
CM_MAIN = 0,
CM_AUX
};
#define DEFAULT_CHANNEL_MODE CM_MAIN
// right-most bit first, modes are in fedcba9876543210 order
#define CHANNEL_MODES_ENABLED 0b0000000000000001
#define PWM_BITS 8 // 8-bit DAC
#define PWM_DATATYPE uint8_t
#define PWM_DATATYPE2 uint16_t // only needs 32-bit if ramp values go over 255
#define PWM1_DATATYPE uint8_t // main LED ramp
#define PWM1_GET(l) PWM_GET8(pwm1_levels, l)
#define PWM2_DATATYPE uint8_t // DAC Vref table
#define PWM2_GET(l) PWM_GET8(pwm2_levels, l)
// main LED outputs
// (DAC_LVL + DAC_VREF + Vref values are defined in arch/*.h)
// Opamp enable
// For turning on and off the op-amp
#define OPAMP_ENABLE_PIN PIN7_bp
#define OPAMP_ENABLE_PORT PORTA_OUT
// how many ms to delay turning on the lights after enabling the channel
// (FIXME: 80 is long enough it's likely to cause bugs elsewhere,
// as events stack up unhandled for 5 consecutive WDT ticks)
#define OPAMP_ON_DELAY 80
// HDR
// turns on HDR FET for the high current range
#define HDR_ENABLE_PIN PIN3_bp
#define HDR_ENABLE_PORT PORTB_OUT
// e-switch
#define SWITCH_PIN PIN4_bp
#define SWITCH_PORT VPORTB.IN
#define SWITCH_ISC_REG PORTB.PIN2CTRL
#define SWITCH_VECT PORTB_PORT_vect
#define SWITCH_INTFLG VPORTB.INTFLAGS
// average drop across diode on this hardware
#ifndef VOLTAGE_FUDGE_FACTOR
#define VOLTAGE_FUDGE_FACTOR 0 // using a PFET so no appreciable drop
#endif
// lighted button
#define AUXLED_PIN PIN5_bp
#define AUXLED_PORT PORTB
inline void hwdef_setup() {
// TODO: for this DAC controlled-light, try to decrease the clock speed
// to reduce overall system power
mcu_clock_speed();
VPORTA.DIR = PIN6_bm // DAC
| PIN7_bm; // Opamp
VPORTB.DIR = PIN3_bm; // HDR
//VPORTC.DIR = 0b00000000;
// enable pullups on the input pins to reduce power
PORTA.PIN0CTRL = PORT_PULLUPEN_bm;
PORTA.PIN1CTRL = PORT_PULLUPEN_bm;
PORTA.PIN2CTRL = PORT_PULLUPEN_bm;
PORTA.PIN3CTRL = PORT_PULLUPEN_bm;
PORTA.PIN4CTRL = PORT_PULLUPEN_bm;
PORTA.PIN5CTRL = PORT_PULLUPEN_bm;
//PORTA.PIN6CTRL = PORT_PULLUPEN_bm; // DAC ouput
//PORTA.PIN7CTRL = PORT_PULLUPEN_bm; // Op-amp enable pin
PORTB.PIN0CTRL = PORT_PULLUPEN_bm;
PORTB.PIN1CTRL = PORT_PULLUPEN_bm;
PORTB.PIN2CTRL = PORT_PULLUPEN_bm;
//PORTB.PIN3CTRL = PORT_PULLUPEN_bm; // HDR channel selection
PORTB.PIN4CTRL = PORT_PULLUPEN_bm
| PORT_ISC_BOTHEDGES_gc; // e-switch
//PORTB.PIN5CTRL = PORT_PULLUPEN_bm; // Aux LED
PORTC.PIN0CTRL = PORT_PULLUPEN_bm;
PORTC.PIN1CTRL = PORT_PULLUPEN_bm;
PORTC.PIN2CTRL = PORT_PULLUPEN_bm;
PORTC.PIN3CTRL = PORT_PULLUPEN_bm;
// set up the DAC
// https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny1614-16-17-DataSheet-DS40002204A.pdf
// DAC ranges from 0V to (255 * Vref) / 256
mcu_set_dac_vref(V05); // boot at lowest Vref setting
VREF.CTRLB |= VREF_DAC0REFEN_bm; // enable DAC Vref
DAC0.CTRLA = DAC_ENABLE_bm | DAC_OUTEN_bm; // enable DAC
DAC_LVL = 0; // turn off output at boot
}
#define LAYOUT_DEFINED
|
