~gabe/flashlight-firmware/anduril2

#ifndef TK_CALIBRATION_H

#define TK_CALIBRATION_H

/*

 * Attiny calibration header.

 * This allows using a single set of hardcoded values across multiple projects.

 *

 * Copyright (C) 2015 Selene Scriven

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 *

 */

/********************** Voltage ADC calibration **************************/

//-------------------------------------------------------------------------------------------

//  The tables below represent the max value for reporting of that associated voltage value.

// For example, for 3.0V reporting in the 1000K table, the max value is 125, but the range

// for 3.0V is 122 to 125.

// The tables are all calculated values, the equations used: 

//

//  ADC_FACTOR = R2/ (R2+R1) * 256/1.1, Val = (V - D1) * ADC_FACTOR

//

//-------------------------------------------------------------------------------------------

#ifdef USING_1000K   // GT-buck

// The ADC values we expect for specific voltages: 2.2v to 4.4v per cell. This is

//  for 4S cells (17.6V max) using R1=1000K, R2=47K, D1=0, and direct connection from Batt+

//  to R1, no diode in-between

//

#define ADC_22     94

#define ADC_23     98

#define ADC_24     102

#define ADC_25     107

#define ADC_26     111

#define ADC_27     115

#define ADC_28     119	//   0%

#define ADC_29     123

#define ADC_30     127

#define ADC_31     132

#define ADC_32     136

#define ADC_33     140

#define ADC_34     144

#define ADC_35     148	//  25% (3.5V)

#define ADC_36     153

#define ADC_37     157	//  50% (3.72V)

#define ADC_38     161

#define ADC_39     165

#define ADC_40     169	//  75% (3.95V)

#define ADC_41     173

#define ADC_42     178	// 100%

#define ADC_43     182

#define ADC_44     188

#endif

#ifdef USING_360K

// The ADC values we expect for specific voltages: 4.4V to 8.8V (2.2v to 4.4v per cell). This is

//  for using R1=360K/36K, R2=47K/4.7K, and direct connection from Batt+

//  to R1, no diode in-between, with an LDO and a 2S battery configuration.

// MAX value for the voltage range:

#define ADC_22     121

#define ADC_23     126

#define ADC_24     132

#define ADC_25     137

#define ADC_26     142

#define ADC_27     148

#define ADC_28     153	//   0%

#define ADC_29     159

#define ADC_30     164

#define ADC_31     169

#define ADC_32     175

#define ADC_33     180

#define ADC_34     185

#define ADC_35     191	//  25% (3.5V)

#define ADC_36     196

#define ADC_37     202	//  50% (3.72V)

#define ADC_38     207

#define ADC_39     212

#define ADC_40     218	//  75% (3.95V)

#define ADC_41     223

#define ADC_42     228	// 100%

#define ADC_43     234

#define ADC_44     239

#endif

#ifdef USING_220K

// The ADC values we expect for specific voltages: 2.2v to 4.4v. This is

//  for using R1=220K/22K, R2=47K/4.7K, and direct connection from Batt+

//  to R1, no diode in-between

#define ADC_22     92

#define ADC_23     96

#define ADC_24     100

#define ADC_25     104

#define ADC_26     109

#define ADC_27     113

#define ADC_28     117	//   0%

#define ADC_29     121

#define ADC_30     125

#define ADC_31     129

#define ADC_32     133

#define ADC_33     137

#define ADC_34     141

#define ADC_35     145	//  25% (3.5V)

#define ADC_36     150

#define ADC_37     154	//  50% (3.72V)

#define ADC_38     158

#define ADC_39     162

#define ADC_40     166	//  75% (3.95V)

#define ADC_41     170

#define ADC_42     174	// 100%

#define ADC_43     178

#define ADC_44     182

#endif

#define ADC_LOW    ADC_30  // When do we start ramping down

#define ADC_CRIT   ADC_28  // When do we shut the light off

#endif  // TK_CALIBRATION_H