differential input adc board K64F Compatible hal freescale K64F
Dependents: trms_helloworld AnalogIn_Diff_helloworld
Fork of AnalogIn_Diff by
AnalogIn_Diff.h@6:f39be15f056c, 2016-01-07 (annotated)
- Committer:
- fblanc
- Date:
- Thu Jan 07 08:34:27 2016 +0000
- Revision:
- 6:f39be15f056c
- Parent:
- 5:c24df4d64aa1
clean code
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 | 3:d17541ceae12 | 20 | #include "mbed.h" |
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 | 5:c24df4d64aa1 | 31 | #include "fsl_interrupt_manager.h" |
fblanc | 2:ea5a4c22bd53 | 32 | |
fblanc | 6:f39be15f056c | 33 | #define VERSION_ADC_DIFF "2016_01_07" |
fblanc | 5:c24df4d64aa1 | 34 | #define MAX_ADC 2 |
fblanc | 2:ea5a4c22bd53 | 35 | #if FSL_FEATURE_ADC_HAS_DIFF_MODE |
fblanc | 2:ea5a4c22bd53 | 36 | |
fblanc | 2:ea5a4c22bd53 | 37 | #define MAX_FADC 6000000 |
fblanc | 2:ea5a4c22bd53 | 38 | #define ADC_DIFF(adc,ch) (((adc)<<1) | (ch)) |
fblanc | 2:ea5a4c22bd53 | 39 | //adc ch -> ADC Diff pin+ ADC<adc>_DP<ch> and pin- ADC<adc>_DM<ch> |
fblanc | 2:ea5a4c22bd53 | 40 | |
JimCarver | 0:0f6f4be28e21 | 41 | |
fblanc | 2:ea5a4c22bd53 | 42 | /** class of AnalogIn_Diff for K64F |
fblanc | 2:ea5a4c22bd53 | 43 | * Example: |
fblanc | 2:ea5a4c22bd53 | 44 | * @code |
fblanc | 2:ea5a4c22bd53 | 45 | * #include "mbed.h" |
fblanc | 2:ea5a4c22bd53 | 46 | * #include "AnalogIn_Diff.h" |
fblanc | 2:ea5a4c22bd53 | 47 | * Ticker flipperADC; |
fblanc | 2:ea5a4c22bd53 | 48 | * bool flag_TX=false; |
fblanc | 2:ea5a4c22bd53 | 49 | * void flipADC() |
fblanc | 2:ea5a4c22bd53 | 50 | * { |
fblanc | 2:ea5a4c22bd53 | 51 | * flag_TX=true; |
fblanc | 2:ea5a4c22bd53 | 52 | * } |
fblanc | 2:ea5a4c22bd53 | 53 | * int main() |
fblanc | 2:ea5a4c22bd53 | 54 | * { |
fblanc | 2:ea5a4c22bd53 | 55 | * flipperADC.attach(&flipADC, 1.0); |
fblanc | 2:ea5a4c22bd53 | 56 | * AnalogIn_Diff adc_diff(ADC_DIFF(0,1)); // ADC Diff pin+ ADC0_DP1 and pin- ADC0_DM1 |
fblanc | 2:ea5a4c22bd53 | 57 | * while (true) { |
fblanc | 2:ea5a4c22bd53 | 58 | * if(flag_TX) { |
fblanc | 2:ea5a4c22bd53 | 59 | * 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 | 60 | * flag_TX=false; |
fblanc | 2:ea5a4c22bd53 | 61 | * } |
fblanc | 2:ea5a4c22bd53 | 62 | * } |
fblanc | 2:ea5a4c22bd53 | 63 | * } |
fblanc | 2:ea5a4c22bd53 | 64 | * @endcode |
fblanc | 2:ea5a4c22bd53 | 65 | */ |
JimCarver | 0:0f6f4be28e21 | 66 | |
JimCarver | 0:0f6f4be28e21 | 67 | class AnalogIn_Diff |
JimCarver | 0:0f6f4be28e21 | 68 | { |
fblanc | 2:ea5a4c22bd53 | 69 | |
JimCarver | 0:0f6f4be28e21 | 70 | public: |
fblanc | 2:ea5a4c22bd53 | 71 | /** Create an AnalogIn_Diff |
fblanc | 2:ea5a4c22bd53 | 72 | * |
fblanc | 2:ea5a4c22bd53 | 73 | * @param adc_ch is ADC_DIFF(#adc, #ch) |
fblanc | 2:ea5a4c22bd53 | 74 | * |
fblanc | 2:ea5a4c22bd53 | 75 | */ |
fblanc | 2:ea5a4c22bd53 | 76 | AnalogIn_Diff(int adc_ch); |
fblanc | 2:ea5a4c22bd53 | 77 | |
fblanc | 3:d17541ceae12 | 78 | |
fblanc | 2:ea5a4c22bd53 | 79 | /** Destroy an AnalogIn_Diff |
fblanc | 2:ea5a4c22bd53 | 80 | */ |
fblanc | 2:ea5a4c22bd53 | 81 | ~AnalogIn_Diff(); |
fblanc | 2:ea5a4c22bd53 | 82 | |
fblanc | 2:ea5a4c22bd53 | 83 | /** Read the input voltage, represented as a float range [-0.5 ; 0.5] |
fblanc | 2:ea5a4c22bd53 | 84 | * |
fblanc | 2:ea5a4c22bd53 | 85 | * @returns A floating-point value representing the current input voltage, measured as a percentage |
fblanc | 2:ea5a4c22bd53 | 86 | */ |
fblanc | 2:ea5a4c22bd53 | 87 | float read(); |
JimCarver | 0:0f6f4be28e21 | 88 | |
fblanc | 2:ea5a4c22bd53 | 89 | /** Read the input voltage, represented as an 16-bit Signed 2's complement |
fblanc | 2:ea5a4c22bd53 | 90 | * |
fblanc | 2:ea5a4c22bd53 | 91 | * @returns |
fblanc | 2:ea5a4c22bd53 | 92 | * 16-bit signed representing the current input voltage, normalised to a 16-bit signed |
fblanc | 2:ea5a4c22bd53 | 93 | */ |
fblanc | 2:ea5a4c22bd53 | 94 | int16_t read_raws16(); |
fblanc | 2:ea5a4c22bd53 | 95 | |
fblanc | 2:ea5a4c22bd53 | 96 | #ifdef MBED_OPERATORS |
fblanc | 2:ea5a4c22bd53 | 97 | /** An operator shorthand for read() |
fblanc | 2:ea5a4c22bd53 | 98 | * |
fblanc | 2:ea5a4c22bd53 | 99 | * The float() operator can be used as a shorthand for read() to simplify common code sequences |
fblanc | 2:ea5a4c22bd53 | 100 | * |
fblanc | 2:ea5a4c22bd53 | 101 | * Example: |
fblanc | 2:ea5a4c22bd53 | 102 | * @code |
fblanc | 2:ea5a4c22bd53 | 103 | * float x = volume.read(); |
fblanc | 2:ea5a4c22bd53 | 104 | * float x = volume; |
fblanc | 2:ea5a4c22bd53 | 105 | * |
fblanc | 2:ea5a4c22bd53 | 106 | * if(volume.read() > 0.25) { ... } |
fblanc | 2:ea5a4c22bd53 | 107 | * if(volume > 0.25) { ... } |
fblanc | 2:ea5a4c22bd53 | 108 | * @endcode |
fblanc | 2:ea5a4c22bd53 | 109 | */ |
fblanc | 2:ea5a4c22bd53 | 110 | operator float() { |
fblanc | 2:ea5a4c22bd53 | 111 | return read(); |
fblanc | 2:ea5a4c22bd53 | 112 | } |
fblanc | 2:ea5a4c22bd53 | 113 | |
fblanc | 2:ea5a4c22bd53 | 114 | #endif //MBED_OPERATORS |
fblanc | 2:ea5a4c22bd53 | 115 | |
JimCarver | 0:0f6f4be28e21 | 116 | private: |
fblanc | 2:ea5a4c22bd53 | 117 | uint8_t chnNum; |
fblanc | 2:ea5a4c22bd53 | 118 | uint32_t instance ; |
fblanc | 5:c24df4d64aa1 | 119 | uint32_t adc_addrs[MAX_ADC]; |
JimCarver | 0:0f6f4be28e21 | 120 | }; |
JimCarver | 0:0f6f4be28e21 | 121 | |
fblanc | 2:ea5a4c22bd53 | 122 | #endif //FSL_FEATURE_ADC_HAS_DIFF_MODE |
fblanc | 2:ea5a4c22bd53 | 123 | #endif //ANALOGIN_DIFF_H |
fblanc | 2:ea5a4c22bd53 | 124 | |
fblanc | 2:ea5a4c22bd53 | 125 |