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/*
* MIT License
*
* Copyright (c) 2023 CC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef LIGHTMETER_FACE_H_
#define LIGHTMETER_FACE_H_
/*
* Aperture-priority Light Meter Face
*
* Tested with the "Q3Q-SWAB-A1-00 Temperature + Test Points + OPT3001" flexboard.
* This flexboard could use a revision:
*
* - The thermistor components should be moved west a mm or flipped to the backside
* to avoid stressing the flexboard against the processor so much.
* - The 'no connect' pad falls off easily.
*
* Controls:
*
* - Trigger a measurement by long-pressing Alarm.
* Sensor integration is happening when the Signal indicator is on.
*
* - ISO setting can be cycled by long-pressing Light.
* During integration the current ISO setting will be displayed.
*
* - EV measurement in the top right: "LAP" indicates "half stop".
* So "LAP -1" means EV = -1.5. Likewise "LAP 13" means EV = +13.5
*
* - Aperture in the bottom right: the last 3 main digits are the f-stop.
* Adjust this number in half-stop increments using Alarm = +1/2 and Light = -1/2.
*
* - Best shutter speed in the bottom left: the first 3 digits are the shutter speed.
* Some special chars are needed here: "-" = seconds, "h" = extra half second, "K" = thousands.
* "HI" or "LO" if there's no shutter in the dictionary within 0.5 stops of correct exposure.
*
* - Mode long-press changes the main digits to show raw sensor lux measurements.
*/
#include "movement.h"
#include "opt3001.h"
#define LIGHTMETER_CALIBRATION 2.58
typedef struct {
char * str;
float ev;
} lightmeter_ev_t;
static const lightmeter_ev_t lightmeter_isos[] = {
{" i 25", -2},
{" i 50", -1},
{" i 100", 0},
{" i 160", 0.68},
{" i 200", 1},
{" i 400", 2},
{" i 800", 3},
{" i1600", 4}};
typedef enum {
LIGHTMETER_ISO_25, LIGHTMETER_ISO_50, LIGHTMETER_ISO_100, LIGHTMETER_ISO_160, LIGHTMETER_ISO_200, LIGHTMETER_ISO_400, LIGHTMETER_ISO_800, LIGHTMETER_ISO_1600,
LIGHTMETER_N_ISOS
} lightmeter_iso_t;
static const lightmeter_ev_t lightmeter_aps[] = {
{"1.4", 0},
{"1.8", -0.5},
{"2.0", -1},
{"2.4", -1.5},
{"2.8", -2},
{"3.3", -2.5},
{"4.0", -3},
{"4.8", -3.5},
{"5.6", -4},
{"6.7", -4.5},
{"8.0", -5},
{"9.5", -5.5},
{"11.", -6},
{"13.", -6.5},
{"16.", -7},
{"19.", -7.5},
{"22.", -8}};
typedef enum {
LIGHTMETER_AP_1P4, LIGHTMETER_AP_1P8, LIGHTMETER_AP_2P0, LIGHTMETER_AP_2P4, LIGHTMETER_AP_2P8, LIGHTMETER_AP_3P3, LIGHTMETER_AP_4P0, LIGHTMETER_AP_4P8, LIGHTMETER_AP_5P6, LIGHTMETER_AP_6P7, LIGHTMETER_AP_8P0, LIGHTMETER_AP_9P5,
LIGHTMETER_AP_11, LIGHTMETER_AP_13, LIGHTMETER_AP_16, LIGHTMETER_AP_19, LIGHTMETER_AP_22,
LIGHTMETER_N_APS
} lightmeter_ap_t;
static const lightmeter_ev_t lightmeter_shs[] = {
{"LO-", 99},
{"HI ", -99},
{"30-", 5.0},
{"20-", 4.5},
{"15-", 4.0},
{"11-", 3.5},
{"8- ", 3.0},
{"6- ", 2.5},
{"4- ", 2.0},
{"3- ", 1.5},
{"2- ", 1.0},
{"1h-", 0.5},
{"1 ", 0.0},
{"1h ", -0.5},
{"2 ", -1.0},
{"3 ", -1.5},
{"4 ", -2.0},
{"6 ", -2.5},
{"8 ", -3.0},
{"12 ", -3.5},
{"15 ", -4.0},
{"20 ", -4.5},
{"30 ", -5.0},
{"45 ", -5.5},
{"60 ", -6.0},
{"90 ", -6.5},
{"125", -7.0},
{"180", -7.5},
{"250", -8.0},
{"350", -8.5},
{"500", -9.0},
{"750", -9.5},
{"1K ", -10.0},
{"1K5", -10.5},
{"2K ", -11.0},
{"3K ", -11.5},
{"4K ", -12.0},
{"6K ", -12.5},
{"8K ", -13.0}};
typedef enum {
LIGHTMETER_SH_LOW, LIGHTMETER_SH_HIGH,
LIGHTMETER_SH_30S, LIGHTMETER_SH_20S, LIGHTMETER_SH_15S, LIGHTMETER_SH_11S, LIGHTMETER_SH_8S, LIGHTMETER_SH_6S, LIGHTMETER_SH_3S, LIGHTMETER_SH_4S, LIGHTMETER_SH_2S, LIGHTMETER_SH_1HS,
LIGHTMETER_SH_1, LIGHTMETER_SH_1H, LIGHTMETER_SH_2, LIGHTMETER_SH_3, LIGHTMETER_SH_4, LIGHTMETER_SH_6, LIGHTMETER_SH_8, LIGHTMETER_SH_12, LIGHTMETER_SH_15, LIGHTMETER_SH_20, LIGHTMETER_SH_30, LIGHTMETER_SH_45, LIGHTMETER_SH_60, LIGHTMETER_SH_90, LIGHTMETER_SH_125, LIGHTMETER_SH_180, LIGHTMETER_SH_250, LIGHTMETER_SH_350, LIGHTMETER_SH_500, LIGHTMETER_SH_750,
LIGHTMETER_SH_1K, LIGHTMETER_SH_1K5, LIGHTMETER_SH_2K, LIGHTMETER_SH_3K, LIGHTMETER_SH_4K, LIGHTMETER_SH_6K, LIGHTMETER_SH_8K,
LIGHTMETER_N_SHS
} lightmeter_sh_t;
typedef struct {
lightmeter_iso_t iso;
lightmeter_ap_t ap;
bool waiting_for_conversion;
float lux;
int mode;
} lightmeter_state_t;
static const opt3001_Config_t lightmeter_takeNewReading = {
.RangeNumber = 0B1100,
.ConversionTime = 0B1,
.Latch = 0B1,
.ModeOfConversionOperation = 0B01
};
static const opt3001_Config_t lightmeter_off = {
.ModeOfConversionOperation = 0B00
};
uint16_t lightmeter_mod(uint16_t m, uint16_t n);
void lightmeter_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
void lightmeter_face_activate(movement_settings_t *settings, void *context);
void lightmeter_show_ev(lightmeter_state_t *state);
bool lightmeter_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
void lightmeter_face_resign(movement_settings_t *settings, void *context);
static const uint8_t lightmeter_addr = 0x44;
#define lightmeter_face ((const watch_face_t){ \
lightmeter_face_setup, \
lightmeter_face_activate, \
lightmeter_face_loop, \
lightmeter_face_resign, \
NULL, \
})
#endif // LIGHTMETER_FACE_H_
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