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1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // e32\include\drivers\adc.h |
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15 // ADC controller header file |
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16 // Currently only used in Series 5mx port |
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17 // |
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18 // |
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19 |
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20 /** |
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21 @file |
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22 @internalTechnology |
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23 */ |
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24 |
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25 #ifndef __M32ADC_H__ |
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26 #define __M32ADC_H__ |
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27 #include <platform.h> |
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28 |
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29 const TInt KNumAdcChannelPriorities=4; |
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30 |
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31 // ADC operation is specified by a list of commands |
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32 // Each command is specified by a 32 bit word: |
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33 // Bit 16=1 -> wait for n ms before proceeding to next command (n=bits 0-15) |
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34 // Bit 17=1 -> do preamble |
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35 // Bit 18=1 -> do postamble |
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36 // Bit 19=1 -> take a reading |
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37 // Bit 20=1 -> don't store reading |
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38 |
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39 enum TAdcCommand |
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40 { |
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41 EAdcCmdWait=0x10000, |
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42 EAdcCmdPreamble=0x20000, |
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43 EAdcCmdPostamble=0x40000, |
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44 EAdcCmdReading=0x80000, |
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45 EAdcCmdDiscard=0x100000, |
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46 EAdcCmdDummyReading=0x180000, |
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47 }; |
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48 |
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49 class DAdc; |
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50 class TAdcChannel : public TPriListLink |
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51 { |
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52 public: |
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53 IMPORT_C TAdcChannel(TInt anAdc); |
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54 public: |
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55 IMPORT_C void Read(TInt* aReadingBuffer); |
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56 public: |
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57 IMPORT_C virtual void Preamble(); |
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58 IMPORT_C virtual void Postamble(); |
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59 virtual void Complete()=0; |
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60 public: |
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61 DAdc* iAdc; |
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62 TInt iChannelId; |
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63 TInt iCommandCount; |
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64 const TInt* iCommandList; |
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65 TInt* iReadings; |
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66 }; |
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67 |
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68 NONSHARABLE_CLASS(DAdc) : public DBase |
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69 { |
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70 public: |
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71 DAdc(); |
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72 ~DAdc(); |
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73 public: |
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74 virtual void StartConversion(TInt aChannelId)=0; |
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75 public: |
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76 void Add(TAdcChannel* aChannel); |
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77 void Execute(TAdcChannel* aChannel); |
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78 void NextCommand(); |
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79 void Start(); |
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80 void ConversionComplete(TInt aValue); |
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81 void TimerExpired(); |
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82 TInt DoSetMinPriority(TInt aPriority); |
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83 IMPORT_C static TInt SetMinPriority(TInt anAdc, TInt aPriority); |
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84 public: |
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85 TPriList<TAdcChannel,KNumAdcChannelPriorities> iList; |
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86 TAdcChannel* iCurrentChannel; |
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87 TInt iCurrentCommand; |
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88 const TInt* iCommandPtr; |
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89 TInt iCommandCount; |
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90 NTimer iTimer; |
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91 TInt iMinPriority; |
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92 static DAdc** TheAdcs; |
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93 static TInt NumberOfAdcs; |
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94 }; |
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95 |
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96 #endif |