differential input adc board K64F Compatible hal freescale K64F
Fork of AnalogIn_Diff by
AnalogIn_Diff.h@2:ea5a4c22bd53, 2014-12-05 (annotated)
- Committer:
- fblanc
- Date:
- Fri Dec 05 14:06:38 2014 +0000
- Revision:
- 2:ea5a4c22bd53
- Parent:
- 1:7b36e4381d83
Compatible hal freescale K64F
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
fblanc | 2:ea5a4c22bd53 | 1 | /* mbed Microcontroller Library |
fblanc | 2:ea5a4c22bd53 | 2 | * Copyright (c) 2006-2013 ARM Limited |
fblanc | 2:ea5a4c22bd53 | 3 | * Copyright (c) 2014 LAAS-CNRS |
fblanc | 2:ea5a4c22bd53 | 4 | * |
fblanc | 2:ea5a4c22bd53 | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
fblanc | 2:ea5a4c22bd53 | 6 | * you may not use this file except in compliance with the License. |
fblanc | 2:ea5a4c22bd53 | 7 | * You may obtain a copy of the License at |
fblanc | 2:ea5a4c22bd53 | 8 | * |
fblanc | 2:ea5a4c22bd53 | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
fblanc | 2:ea5a4c22bd53 | 10 | * |
fblanc | 2:ea5a4c22bd53 | 11 | * Unless required by applicable law or agreed to in writing, software |
fblanc | 2:ea5a4c22bd53 | 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
fblanc | 2:ea5a4c22bd53 | 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
fblanc | 2:ea5a4c22bd53 | 14 | * See the License for the specific language governing permissions and |
fblanc | 2:ea5a4c22bd53 | 15 | * limitations under the License. |
fblanc | 2:ea5a4c22bd53 | 16 | */ |
JimCarver | 0:0f6f4be28e21 | 17 | |
fblanc | 2:ea5a4c22bd53 | 18 | #ifndef ANALOGIN_DIFF_H |
fblanc | 2:ea5a4c22bd53 | 19 | #define ANALOGIN_DIFF_H |
fblanc | 2:ea5a4c22bd53 | 20 | |
fblanc | 2:ea5a4c22bd53 | 21 | #include "mbed_assert.h" |
fblanc | 2:ea5a4c22bd53 | 22 | #include "analogin_api.h" |
fblanc | 2:ea5a4c22bd53 | 23 | #include "platform.h" |
fblanc | 2:ea5a4c22bd53 | 24 | #include "cmsis.h" |
fblanc | 2:ea5a4c22bd53 | 25 | #include "pinmap.h" |
fblanc | 2:ea5a4c22bd53 | 26 | #include "PeripheralNames.h" |
fblanc | 2:ea5a4c22bd53 | 27 | #include "fsl_adc_hal.h" |
fblanc | 2:ea5a4c22bd53 | 28 | #include "fsl_clock_manager.h" |
fblanc | 2:ea5a4c22bd53 | 29 | #include "PeripheralPins.h" |
fblanc | 2:ea5a4c22bd53 | 30 | #include "fsl_device_registers.h" |
fblanc | 2:ea5a4c22bd53 | 31 | |
fblanc | 2:ea5a4c22bd53 | 32 | #define VERSION_ADC_DIFF "2014_12_05" |
fblanc | 2:ea5a4c22bd53 | 33 | |
fblanc | 2:ea5a4c22bd53 | 34 | #if FSL_FEATURE_ADC_HAS_DIFF_MODE |
fblanc | 2:ea5a4c22bd53 | 35 | |
fblanc | 2:ea5a4c22bd53 | 36 | #define MAX_FADC 6000000 |
fblanc | 2:ea5a4c22bd53 | 37 | #define ADC_DIFF(adc,ch) (((adc)<<1) | (ch)) |
fblanc | 2:ea5a4c22bd53 | 38 | //adc ch -> ADC Diff pin+ ADC<adc>_DP<ch> and pin- ADC<adc>_DM<ch> |
fblanc | 2:ea5a4c22bd53 | 39 | |
JimCarver | 0:0f6f4be28e21 | 40 | |
fblanc | 2:ea5a4c22bd53 | 41 | /** class of AnalogIn_Diff for K64F |
fblanc | 2:ea5a4c22bd53 | 42 | * Example: |
fblanc | 2:ea5a4c22bd53 | 43 | * @code |
fblanc | 2:ea5a4c22bd53 | 44 | * #include "mbed.h" |
fblanc | 2:ea5a4c22bd53 | 45 | * #include "AnalogIn_Diff.h" |
fblanc | 2:ea5a4c22bd53 | 46 | * Ticker flipperADC; |
fblanc | 2:ea5a4c22bd53 | 47 | * bool flag_TX=false; |
fblanc | 2:ea5a4c22bd53 | 48 | * void flipADC() |
fblanc | 2:ea5a4c22bd53 | 49 | * { |
fblanc | 2:ea5a4c22bd53 | 50 | * flag_TX=true; |
fblanc | 2:ea5a4c22bd53 | 51 | * } |
fblanc | 2:ea5a4c22bd53 | 52 | * int main() |
fblanc | 2:ea5a4c22bd53 | 53 | * { |
fblanc | 2:ea5a4c22bd53 | 54 | * flipperADC.attach(&flipADC, 1.0); |
fblanc | 2:ea5a4c22bd53 | 55 | * AnalogIn_Diff adc_diff(ADC_DIFF(0,1)); // ADC Diff pin+ ADC0_DP1 and pin- ADC0_DM1 |
fblanc | 2:ea5a4c22bd53 | 56 | * while (true) { |
fblanc | 2:ea5a4c22bd53 | 57 | * if(flag_TX) { |
fblanc | 2:ea5a4c22bd53 | 58 | * pc.printf("analog= %f \r\n",adc_diff.read()); //-0.5 < analog < 0.5 ; (-0.5 # ADC0_DP1=0.0V ADC0_DM1=3.3V) (0.0 # ADC0_DP1=1.65V ADC0_DM1=1.65V) (0.5 # ADC0_DP1=3.3V ADC0_DM1=0.0V) |
fblanc | 2:ea5a4c22bd53 | 59 | * flag_TX=false; |
fblanc | 2:ea5a4c22bd53 | 60 | * } |
fblanc | 2:ea5a4c22bd53 | 61 | * } |
fblanc | 2:ea5a4c22bd53 | 62 | * } |
fblanc | 2:ea5a4c22bd53 | 63 | * @endcode |
fblanc | 2:ea5a4c22bd53 | 64 | */ |
JimCarver | 0:0f6f4be28e21 | 65 | |
JimCarver | 0:0f6f4be28e21 | 66 | class AnalogIn_Diff |
JimCarver | 0:0f6f4be28e21 | 67 | { |
fblanc | 2:ea5a4c22bd53 | 68 | |
JimCarver | 0:0f6f4be28e21 | 69 | public: |
fblanc | 2:ea5a4c22bd53 | 70 | /** Create an AnalogIn_Diff |
fblanc | 2:ea5a4c22bd53 | 71 | * |
fblanc | 2:ea5a4c22bd53 | 72 | * @param adc_ch is ADC_DIFF(#adc, #ch) |
fblanc | 2:ea5a4c22bd53 | 73 | * |
fblanc | 2:ea5a4c22bd53 | 74 | */ |
fblanc | 2:ea5a4c22bd53 | 75 | AnalogIn_Diff(int adc_ch); |
fblanc | 2:ea5a4c22bd53 | 76 | |
fblanc | 2:ea5a4c22bd53 | 77 | /** Destroy an AnalogIn_Diff |
fblanc | 2:ea5a4c22bd53 | 78 | */ |
fblanc | 2:ea5a4c22bd53 | 79 | ~AnalogIn_Diff(); |
fblanc | 2:ea5a4c22bd53 | 80 | |
fblanc | 2:ea5a4c22bd53 | 81 | /** Read the input voltage, represented as a float range [-0.5 ; 0.5] |
fblanc | 2:ea5a4c22bd53 | 82 | * |
fblanc | 2:ea5a4c22bd53 | 83 | * @returns A floating-point value representing the current input voltage, measured as a percentage |
fblanc | 2:ea5a4c22bd53 | 84 | */ |
fblanc | 2:ea5a4c22bd53 | 85 | float read(); |
JimCarver | 0:0f6f4be28e21 | 86 | |
fblanc | 2:ea5a4c22bd53 | 87 | /** Read the input voltage, represented as an 16-bit Signed 2's complement |
fblanc | 2:ea5a4c22bd53 | 88 | * |
fblanc | 2:ea5a4c22bd53 | 89 | * @returns |
fblanc | 2:ea5a4c22bd53 | 90 | * 16-bit signed representing the current input voltage, normalised to a 16-bit signed |
fblanc | 2:ea5a4c22bd53 | 91 | */ |
fblanc | 2:ea5a4c22bd53 | 92 | int16_t read_raws16(); |
fblanc | 2:ea5a4c22bd53 | 93 | |
fblanc | 2:ea5a4c22bd53 | 94 | #ifdef MBED_OPERATORS |
fblanc | 2:ea5a4c22bd53 | 95 | /** An operator shorthand for read() |
fblanc | 2:ea5a4c22bd53 | 96 | * |
fblanc | 2:ea5a4c22bd53 | 97 | * The float() operator can be used as a shorthand for read() to simplify common code sequences |
fblanc | 2:ea5a4c22bd53 | 98 | * |
fblanc | 2:ea5a4c22bd53 | 99 | * Example: |
fblanc | 2:ea5a4c22bd53 | 100 | * @code |
fblanc | 2:ea5a4c22bd53 | 101 | * float x = volume.read(); |
fblanc | 2:ea5a4c22bd53 | 102 | * float x = volume; |
fblanc | 2:ea5a4c22bd53 | 103 | * |
fblanc | 2:ea5a4c22bd53 | 104 | * if(volume.read() > 0.25) { ... } |
fblanc | 2:ea5a4c22bd53 | 105 | * if(volume > 0.25) { ... } |
fblanc | 2:ea5a4c22bd53 | 106 | * @endcode |
fblanc | 2:ea5a4c22bd53 | 107 | */ |
fblanc | 2:ea5a4c22bd53 | 108 | operator float() { |
fblanc | 2:ea5a4c22bd53 | 109 | return read(); |
fblanc | 2:ea5a4c22bd53 | 110 | } |
fblanc | 2:ea5a4c22bd53 | 111 | |
fblanc | 2:ea5a4c22bd53 | 112 | #endif //MBED_OPERATORS |
fblanc | 2:ea5a4c22bd53 | 113 | |
JimCarver | 0:0f6f4be28e21 | 114 | private: |
fblanc | 2:ea5a4c22bd53 | 115 | uint8_t chnNum; |
fblanc | 2:ea5a4c22bd53 | 116 | uint32_t instance ; |
fblanc | 2:ea5a4c22bd53 | 117 | uint32_t adc_addrs[]; |
JimCarver | 0:0f6f4be28e21 | 118 | }; |
JimCarver | 0:0f6f4be28e21 | 119 | |
fblanc | 2:ea5a4c22bd53 | 120 | #endif //FSL_FEATURE_ADC_HAS_DIFF_MODE |
fblanc | 2:ea5a4c22bd53 | 121 | #endif //ANALOGIN_DIFF_H |
fblanc | 2:ea5a4c22bd53 | 122 | |
fblanc | 2:ea5a4c22bd53 | 123 |