Mike Pollock / Mbed 2 deprecated GT_Tuner2

Slight modifications to original for different LCD and mbed pin outs

Dependencies:   mbed

Fork of GT_Tuner by Andrew Durand

ADC_full/adc.h@2:0b7bf57470c4, 2016-12-16 (annotated)

Committer:
mptapton
Date:
Fri Dec 16 10:15:01 2016 +0000
Revision:
2:0b7bf57470c4
Parent:
0:490e67fb09c2 
Original code modified for a different LCD and mbed pin out. Additional output to LCD for real time input signal value

Who changed what in which revision?

UserRevisionLine numberNew contents of line
adurand 0:490e67fb09c2 1 /* mbed Library - ADC
adurand 0:490e67fb09c2 2 * Copyright (c) 2010, sblandford
adurand 0:490e67fb09c2 3 * released under MIT license http://mbed.org/licence/mit
adurand 0:490e67fb09c2 4 */
adurand 0:490e67fb09c2 5
adurand 0:490e67fb09c2 6 #ifndef MBED_ADC_H
adurand 0:490e67fb09c2 7 #define MBED_ADC_H
adurand 0:490e67fb09c2 8
adurand 0:490e67fb09c2 9 #include "mbed.h"
adurand 0:490e67fb09c2 10 #define XTAL_FREQ 12000000
adurand 0:490e67fb09c2 11 #define MAX_ADC_CLOCK 13000000
adurand 0:490e67fb09c2 12 #define CLKS_PER_SAMPLE 64
adurand 0:490e67fb09c2 13
adurand 0:490e67fb09c2 14 class ADC {
adurand 0:490e67fb09c2 15 public:
adurand 0:490e67fb09c2 16
adurand 0:490e67fb09c2 17 //Initialize ADC with ADC maximum sample rate of
adurand 0:490e67fb09c2 18 //sample_rate and system clock divider of cclk_div
adurand 0:490e67fb09c2 19 //Maximum recommened sample rate is 184000
adurand 0:490e67fb09c2 20 ADC(int sample_rate, int cclk_div);
adurand 0:490e67fb09c2 21
adurand 0:490e67fb09c2 22 //Enable/disable ADC on pin according to state
adurand 0:490e67fb09c2 23 //and also select/de-select for next conversion
adurand 0:490e67fb09c2 24 void setup(PinName pin, int state);
adurand 0:490e67fb09c2 25
adurand 0:490e67fb09c2 26 //Return enabled/disabled state of ADC on pin
adurand 0:490e67fb09c2 27 int setup(PinName pin);
adurand 0:490e67fb09c2 28
adurand 0:490e67fb09c2 29 //Enable/disable burst mode according to state
adurand 0:490e67fb09c2 30 void burst(int state);
adurand 0:490e67fb09c2 31
adurand 0:490e67fb09c2 32 //Select channel already setup
adurand 0:490e67fb09c2 33 void select(PinName pin);
adurand 0:490e67fb09c2 34
adurand 0:490e67fb09c2 35 //Return burst mode enabled/disabled
adurand 0:490e67fb09c2 36 int burst(void);
adurand 0:490e67fb09c2 37
adurand 0:490e67fb09c2 38 /*Set start condition and edge according to mode:
adurand 0:490e67fb09c2 39 0 - No start (this value should be used when clearing PDN to 0).
adurand 0:490e67fb09c2 40 1 - Start conversion now.
adurand 0:490e67fb09c2 41 2 - Start conversion when the edge selected by bit 27 occurs on the P2.10 / EINT0 / NMI pin.
adurand 0:490e67fb09c2 42 3 - Start conversion when the edge selected by bit 27 occurs on the P1.27 / CLKOUT /
adurand 0:490e67fb09c2 43 USB_OVRCRn / CAP0.1 pin.
adurand 0:490e67fb09c2 44 4 - Start conversion when the edge selected by bit 27 occurs on MAT0.1. Note that this does
adurand 0:490e67fb09c2 45 not require that the MAT0.1 function appear on a device pin.
adurand 0:490e67fb09c2 46 5 - Start conversion when the edge selected by bit 27 occurs on MAT0.3. Note that it is not
adurand 0:490e67fb09c2 47 possible to cause the MAT0.3 function to appear on a device pin.
adurand 0:490e67fb09c2 48 6 - Start conversion when the edge selected by bit 27 occurs on MAT1.0. Note that this does
adurand 0:490e67fb09c2 49 not require that the MAT1.0 function appear on a device pin.
adurand 0:490e67fb09c2 50 7 - Start conversion when the edge selected by bit 27 occurs on MAT1.1. Note that this does
adurand 0:490e67fb09c2 51 not require that the MAT1.1 function appear on a device pin.
adurand 0:490e67fb09c2 52 When mode >= 2, conversion is triggered by edge:
adurand 0:490e67fb09c2 53 0 - Rising edge
adurand 0:490e67fb09c2 54 1 - Falling edge
adurand 0:490e67fb09c2 55 */
adurand 0:490e67fb09c2 56 void startmode(int mode, int edge);
adurand 0:490e67fb09c2 57
adurand 0:490e67fb09c2 58 //Return startmode state according to mode_edge=0: mode and mode_edge=1: edge
adurand 0:490e67fb09c2 59 int startmode(int mode_edge);
adurand 0:490e67fb09c2 60
adurand 0:490e67fb09c2 61 //Start ADC conversion
adurand 0:490e67fb09c2 62 void start(void);
adurand 0:490e67fb09c2 63
adurand 0:490e67fb09c2 64 //Set interrupt enable/disable for pin to state
adurand 0:490e67fb09c2 65 void interrupt_state(PinName pin, int state);
adurand 0:490e67fb09c2 66
adurand 0:490e67fb09c2 67 //Return enable/disable state of interrupt for pin
adurand 0:490e67fb09c2 68 int interrupt_state(PinName pin);
adurand 0:490e67fb09c2 69
adurand 0:490e67fb09c2 70 //Attach custom interrupt handler replacing default
adurand 0:490e67fb09c2 71 void attach(void(*fptr)(void));
adurand 0:490e67fb09c2 72
adurand 0:490e67fb09c2 73 //Restore default interrupt handler
adurand 0:490e67fb09c2 74 void detach(void);
adurand 0:490e67fb09c2 75
adurand 0:490e67fb09c2 76 //Append custom interrupt handler for pin
adurand 0:490e67fb09c2 77 void append(PinName pin, void(*fptr)(uint32_t value));
adurand 0:490e67fb09c2 78
adurand 0:490e67fb09c2 79 //Unappend custom interrupt handler for pin
adurand 0:490e67fb09c2 80 void unappend(PinName pin);
adurand 0:490e67fb09c2 81
adurand 0:490e67fb09c2 82 //Append custom global interrupt handler
adurand 0:490e67fb09c2 83 void append(void(*fptr)(int chan, uint32_t value));
adurand 0:490e67fb09c2 84
adurand 0:490e67fb09c2 85 //Unappend custom global interrupt handler
adurand 0:490e67fb09c2 86 void unappend(void);
adurand 0:490e67fb09c2 87
adurand 0:490e67fb09c2 88 //Set ADC offset to a value 0-7
adurand 0:490e67fb09c2 89 void offset(int offset);
adurand 0:490e67fb09c2 90
adurand 0:490e67fb09c2 91 //Return current ADC offset
adurand 0:490e67fb09c2 92 int offset(void);
adurand 0:490e67fb09c2 93
adurand 0:490e67fb09c2 94 //Return value of ADC on pin
adurand 0:490e67fb09c2 95 int read(PinName pin);
adurand 0:490e67fb09c2 96
adurand 0:490e67fb09c2 97 //Return DONE flag of ADC on pin
adurand 0:490e67fb09c2 98 int done(PinName pin);
adurand 0:490e67fb09c2 99
adurand 0:490e67fb09c2 100 //Return OVERRUN flag of ADC on pin
adurand 0:490e67fb09c2 101 int overrun(PinName pin);
adurand 0:490e67fb09c2 102
adurand 0:490e67fb09c2 103 //Return actual ADC clock
adurand 0:490e67fb09c2 104 int actual_adc_clock(void);
adurand 0:490e67fb09c2 105
adurand 0:490e67fb09c2 106 //Return actual maximum sample rate
adurand 0:490e67fb09c2 107 int actual_sample_rate(void);
adurand 0:490e67fb09c2 108
adurand 0:490e67fb09c2 109 //Return pin ID of ADC channel
adurand 0:490e67fb09c2 110 PinName channel_to_pin(int chan);
adurand 0:490e67fb09c2 111
adurand 0:490e67fb09c2 112 //Return pin number of ADC channel
adurand 0:490e67fb09c2 113 int channel_to_pin_number(int chan);
adurand 0:490e67fb09c2 114
adurand 0:490e67fb09c2 115
adurand 0:490e67fb09c2 116 private:
adurand 0:490e67fb09c2 117 int _pin_to_channel(PinName pin);
adurand 0:490e67fb09c2 118 uint32_t _data_of_pin(PinName pin);
adurand 0:490e67fb09c2 119
adurand 0:490e67fb09c2 120 int _adc_clk_freq;
adurand 0:490e67fb09c2 121 void adcisr(void);
adurand 0:490e67fb09c2 122 static void _adcisr(void);
adurand 0:490e67fb09c2 123 static ADC *instance;
adurand 0:490e67fb09c2 124
adurand 0:490e67fb09c2 125 uint32_t _adc_data[8];
adurand 0:490e67fb09c2 126 void(*_adc_isr[8])(uint32_t value);
adurand 0:490e67fb09c2 127 void(*_adc_g_isr)(int chan, uint32_t value);
adurand 0:490e67fb09c2 128 void(*_adc_m_isr)(void);
adurand 0:490e67fb09c2 129 };
adurand 0:490e67fb09c2 130
adurand 0:490e67fb09c2 131 #endif