462f24b313
* initial commit, added opt3001 light meter test app * tested working light meter board, i2c communication still has issues * fixed i2c; rudimentary lightmeter works! * added aperture priority ui * added aperture priority ui * added README * adjusted cal * fixed bugs (HI shutter speed, lux mode toggle) * made it possible to advance to the next face * initialized lux variable * lowered tolerance for HI and LO * Changed EV display from always showing EV100 to showing EV[iso setting] * dont display old ev when ISO changes * changed mode and light behavior * updated readme * fixed indentation * made lightmeter display logic more consistent * made lightmeter display logic more consistent * reverted rules.mk (for merge into upstream) * reverted rules.mk (for merge into upstream) * removed OPT3001 PCB model * made lux mode default, corrected timeout behavior --------- Co-authored-by: Christian Chapman <user@debian>
92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
/*
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Arduino library for Texas Instruments opt3001_t Digital Ambient Light Sensor
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Written by AA for ClosedCube
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Adapted to Sensor-Watch interface by CC
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---
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The MIT License (MIT)
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Copyright (c) 2015 ClosedCube Limited
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <math.h>
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#include "opt3001.h"
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#include "watch_utility.h"
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uint16_t opt3001_readManufacturerID(uint8_t devaddr) {
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uint8_t buf[2];
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buf[0] = (uint8_t) OPT3001_MANUFACTURER_ID;
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watch_i2c_send(devaddr, buf, 1);
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watch_i2c_receive(devaddr, buf, 2);
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return ((uint16_t) buf[0] << 8) | ((uint16_t) buf[1]);
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}
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uint16_t opt3001_readDeviceID(uint8_t devaddr) {
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uint8_t buf[2];
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buf[0] = (uint8_t) OPT3001_DEVICE_ID;
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watch_i2c_send(devaddr, buf, 1);
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watch_i2c_receive(devaddr, buf, 2);
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return ((uint16_t) buf[0] << 8) | ((uint16_t) buf[1]);
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}
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opt3001_Config_t opt3001_readConfig(uint8_t devaddr) {
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opt3001_Config_t config;
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uint8_t buf[2];
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buf[0] = (uint8_t) OPT3001_CONFIG;
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watch_i2c_send(devaddr, buf, 1);
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watch_i2c_receive(devaddr, buf, 2);
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config.rawData = ((uint16_t) buf[0] << 8) | ((uint16_t) buf[1]);
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return config;
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}
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void opt3001_writeConfig(uint8_t devaddr, opt3001_Config_t config) {
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uint8_t buf[3] = {OPT3001_CONFIG, (uint8_t)(config.rawData >> 8), (uint8_t)(config.rawData & 0x00FF)};
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watch_i2c_send(devaddr, buf, 3);
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return;
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}
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opt3001_t opt3001_readResult(uint8_t devaddr) {
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return opt3001_readRegister(devaddr, OPT3001_RESULT);
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}
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opt3001_t opt3001_readHighLimit(uint8_t devaddr) {
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return opt3001_readRegister(devaddr, OPT3001_HIGH_LIMIT);
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}
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opt3001_t opt3001_readLowLimit(uint8_t devaddr) {
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return opt3001_readRegister(devaddr, OPT3001_LOW_LIMIT);
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}
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opt3001_t opt3001_readRegister(uint8_t devaddr, opt3001_Command_t command) {
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opt3001_t result;
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opt3001_ER_t er;
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uint8_t buf[2];
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buf[0] = (uint8_t) command;
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watch_i2c_send(devaddr, buf, 1);
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watch_i2c_receive(devaddr, buf, 2);
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er.rawData = ((uint16_t) buf[0] << 8) | ((uint16_t) buf[1]);
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result.raw = er;
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result.lux = 0.01*pow(2, er.Exponent)*er.Result;
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return result;
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}
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