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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2136 | - | 1 | /***************************************************************************** |
| 2 | * Copyright (C) 2008 Thomas Kaiser, thomas@ft-fanpage.de * |
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| 3 | * Copyright (C) 2009 Peter "woggle" Mack, mac@denich.net * |
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| 4 | * based on the key handling by Peter Dannegger * |
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| 5 | * see www.mikrocontroller.net * |
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| 6 | * Copyright (C) 2011 Christian "Cebra" Brandtner, brandtner@brandtner.net * |
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| 7 | * Copyright (C) 2011 Harald Bongartz * |
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| 8 | * * |
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| 9 | * This program is free software; you can redistribute it and/or modify * |
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| 10 | * it under the terms of the GNU General Public License as published by * |
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| 11 | * the Free Software Foundation; either version 2 of the License. * |
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| 12 | * * |
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| 13 | * This program is distributed in the hope that it will be useful, * |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 16 | * GNU General Public License for more details. * |
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| 17 | * * |
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| 18 | * You should have received a copy of the GNU General Public License * |
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| 19 | * along with this program; if not, write to the * |
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| 20 | * Free Software Foundation, Inc., * |
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| 21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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| 22 | * * |
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| 23 | * * |
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| 24 | * Credits to: * |
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| 25 | * Holger Buss & Ingo Busker from mikrokopter.de for the MK project + SVN * |
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| 26 | * http://www.mikrokopter.de * |
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| 27 | * Gregor "killagreg" Stobrawa for his version of the MK code * |
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| 28 | * Thomas Kaiser "thkais" for the original project. See * |
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| 29 | * http://www.ft-fanpage.de/mikrokopter/ * |
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| 30 | * http://forum.mikrokopter.de/topic-4061-1.html * |
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| 31 | * Claas Anders "CaScAdE" Rathje for providing the font and his C-OSD code * |
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| 32 | * http://www.mylifesucks.de/oss/c-osd/ * |
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| 33 | * Harald Bongartz "HaraldB" for providing his Ideas and Code for usibility* |
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| 34 | *****************************************************************************/ |
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| 35 | |||
| 36 | //############################################################################ |
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| 37 | //# HISTORY lipo.c |
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| 38 | //# |
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| 39 | //# 15.06.2014 OG |
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| 40 | //# - fix; show_Lipo() - wenn die Spannung unter 3.20 Volt ging, wurde wieder |
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| 41 | //# ein voller Akkubalken angezeigt aufgrund einer Subtraktion - fixed |
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| 42 | //# |
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| 43 | //# 21.02.2014 OG |
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| 44 | //# - chg: show_Lipo() neu geschrieben - etwas smarter, ein paar Bytes kleiner |
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| 45 | //# |
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| 46 | //# 20.02.2014 OG |
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| 47 | //# - chg: Codeformattierungen |
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| 48 | //############################################################################ |
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| 49 | |||
| 50 | |||
| 51 | #include "../cpu.h" |
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| 52 | #include <avr/io.h> |
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| 53 | #include <util/delay.h> |
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| 54 | #include <avr/interrupt.h> |
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| 55 | #include <inttypes.h> |
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| 56 | #include <stdlib.h> |
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| 57 | #include <avr/pgmspace.h> |
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| 58 | #include "../main.h" |
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| 59 | #include "../lcd/lcd.h" |
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| 60 | #include "lipo.h" |
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| 61 | #include "../eeprom/eeprom.h" |
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| 62 | |||
| 63 | |||
| 64 | // Global variables |
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| 65 | double accumulator = 0; //!< Accumulated 10-bit samples |
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| 66 | double Vin = 0; //!< 16-bit float number result |
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| 67 | short temp = 0; //!< Temporary variable |
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| 68 | short samples = 0; //!< Number of conversions |
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| 69 | uint16_t volt_avg = 0; |
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| 70 | |||
| 71 | |||
| 72 | |||
| 73 | //-------------------------------------------------------------- |
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| 74 | //! ADC interrupt routine |
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| 75 | //-------------------------------------------------------------- |
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| 76 | ISR (ADC_vect) |
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| 77 | { |
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| 78 | accumulator += ADCW; |
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| 79 | samples++; |
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| 80 | |||
| 81 | if( samples>4095 ) |
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| 82 | { |
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| 83 | oversampled(); |
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| 84 | } |
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| 85 | } |
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| 86 | |||
| 87 | |||
| 88 | |||
| 89 | //-------------------------------------------------------------- |
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| 90 | //-------------------------------------------------------------- |
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| 91 | void ADC_Init (void) |
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| 92 | { |
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| 93 | DDRA &= ~(1<<DDA1); // MartinR |
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| 94 | PORTA &= ~(1<<PORTA1); // MartinR |
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| 95 | ADMUX = (0<<REFS1) | (1<<REFS0); // externe 5V Referenzspannung nutzen |
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| 96 | ADMUX = (ADMUX & ~(0x1F)) | (1 & 0x1F); // ADC1 verwenden |
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| 97 | ADCSRA = (1<<ADEN)|(1<<ADIE)|(1<<ADSC)|(1<<ADATE)|(1<<ADPS2)|(1<<ADPS1)|(1<<ADPS0); // Prescaler 128, Freilaufend, Interrupte frei |
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| 98 | } |
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| 99 | |||
| 100 | |||
| 101 | |||
| 102 | |||
| 103 | //-------------------------------------------------------------- |
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| 104 | // Error compensation, Scaling 16-bit result, Rounding up, |
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| 105 | // Calculate 16-bit result, Resets variables |
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| 106 | // |
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| 107 | // Quelle AVR121: Enhancing ADC resolution by versampling |
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| 108 | //-------------------------------------------------------------- |
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| 109 | void oversampled(void) |
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| 110 | { |
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| 111 | cli(); |
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| 112 | accumulator += Config.Lipo_UOffset; //5150 Offset error compensation |
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| 113 | |||
| 114 | // accumulator *= 0.9993; // Gain error compensation |
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| 115 | accumulator *= 0.9600; //0.9800 Gain error compensation |
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| 116 | temp=(int)accumulator%64; |
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| 117 | accumulator/=64; // Scaling the answer |
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| 118 | |||
| 119 | if(temp>=32) |
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| 120 | { |
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| 121 | accumulator += 1; // Round up |
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| 122 | } |
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| 123 | |||
| 124 | // Vin = (accumulator/65536)*4.910; // Calculating 16-bit result |
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| 125 | |||
| 126 | Vin =accumulator/7.5; |
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| 127 | volt_avg = Vin; |
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| 128 | |||
| 129 | // write_ndigit_number_u(0, 3, Vin, 5, 0,0); |
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| 130 | // write_ndigit_number_u(0, 4, volt_avg, 5, 0,0); |
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| 131 | |||
| 132 | samples = 0; |
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| 133 | accumulator = 0; |
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| 134 | |||
| 135 | sei(); |
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| 136 | } |
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| 137 | |||
| 138 | |||
| 139 | |||
| 140 | //-------------------------------------------------------------- |
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| 141 | //-------------------------------------------------------------- |
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| 142 | void show_Lipo( void ) |
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| 143 | { |
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| 144 | int16_t w = 0; |
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| 145 | |||
| 146 | //-------------------------------------------- |
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| 147 | // Batterie Symbol zeichnen |
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| 148 | //-------------------------------------------- |
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| 149 | lcd_rect(104, 0, 23, 7, 1); // Rahmen aussen |
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| 150 | lcd_rect(105, 1, 21, 5, 0); // Rahmen innen |
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| 151 | lcd_frect(102, 0, 1, 7, 0); // ganz links etwas loeschen |
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| 152 | lcd_rect(103,2,1,3,1); // Batterie "Kappe" |
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| 153 | |||
| 154 | |||
| 155 | //-------------------------------------------- |
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| 156 | // Batterie Balken berechnen / zeichnen |
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| 157 | //-------------------------------------------- |
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| 158 | // |
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| 159 | // Config.PKT_Accutyp |
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| 160 | // true = LiPO Akku mit max. 4.2 Volt (420) |
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| 161 | // false = LiON Akku mit max. 4.1 Volt (410) |
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| 162 | |||
| 163 | if( volt_avg > 320 ) |
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| 164 | { |
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| 165 | w = (volt_avg-320)/(Config.PKT_Accutyp ? 4.8 : 4.5); // die Faktoren 4.8 (kann bis 5.0) und 4.5 fuer LiPo / LiON wurden per Test ermittelt |
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| 166 | //lcdx_printf_at_P( 12, 1, MNORMAL, 0,0, PSTR("v=%3d"), w ); // Debug Anzeige um Faktoren zu ermitteln |
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| 167 | } |
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| 168 | |||
| 169 | if(w<0) w = 0; |
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| 170 | if(w>20) w = 20; // nicht mehr als 20 Pixel Breite |
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| 171 | |||
| 172 | if( w>0 ) |
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| 173 | lcd_frect( 106+(20-w), 2, w-1, 3, 1); // Batterie Balken: fill |
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| 174 | |||
| 175 | if( w<20 ) |
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| 176 | lcd_frect( 106, 2, 19-w, 3, 0); // Batterie Balken: clear |
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| 177 | } |
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| 178 |