Nikolay Sergeev / Mbed 2 deprecated audio_FFT

Ura

Dependencies:   mbed

Fork of audio_FFT by James Cobb

ADC_full/adc.h@1:9935872e58f9, 2014-10-07 (annotated)

Committer:
Sergeev
Date:
Tue Oct 07 15:07:44 2014 +0000
Revision:
1:9935872e58f9
Parent:
0:5b7b619f59cd 
Uraaaaa!!!!

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jcobb 0:5b7b619f59cd 1 /* mbed Library - ADC
jcobb 0:5b7b619f59cd 2 * Copyright (c) 2010, sblandford
jcobb 0:5b7b619f59cd 3 * released under MIT license http://mbed.org/licence/mit
jcobb 0:5b7b619f59cd 4 */
jcobb 0:5b7b619f59cd 5
jcobb 0:5b7b619f59cd 6 #ifndef MBED_ADC_H
jcobb 0:5b7b619f59cd 7 #define MBED_ADC_H
jcobb 0:5b7b619f59cd 8
jcobb 0:5b7b619f59cd 9 #include "mbed.h"
jcobb 0:5b7b619f59cd 10 #define XTAL_FREQ 12000000
jcobb 0:5b7b619f59cd 11 #define MAX_ADC_CLOCK 13000000
jcobb 0:5b7b619f59cd 12 #define CLKS_PER_SAMPLE 64
jcobb 0:5b7b619f59cd 13
jcobb 0:5b7b619f59cd 14 class ADC {
jcobb 0:5b7b619f59cd 15 public:
jcobb 0:5b7b619f59cd 16
jcobb 0:5b7b619f59cd 17 //Initialize ADC with ADC maximum sample rate of
jcobb 0:5b7b619f59cd 18 //sample_rate and system clock divider of cclk_div
jcobb 0:5b7b619f59cd 19 //Maximum recommened sample rate is 184000
jcobb 0:5b7b619f59cd 20 ADC(int sample_rate, int cclk_div);
jcobb 0:5b7b619f59cd 21
jcobb 0:5b7b619f59cd 22 //Enable/disable ADC on pin according to state
jcobb 0:5b7b619f59cd 23 //and also select/de-select for next conversion
jcobb 0:5b7b619f59cd 24 void setup(PinName pin, int state);
jcobb 0:5b7b619f59cd 25
jcobb 0:5b7b619f59cd 26 //Return enabled/disabled state of ADC on pin
jcobb 0:5b7b619f59cd 27 int setup(PinName pin);
jcobb 0:5b7b619f59cd 28
jcobb 0:5b7b619f59cd 29 //Enable/disable burst mode according to state
jcobb 0:5b7b619f59cd 30 void burst(int state);
jcobb 0:5b7b619f59cd 31
jcobb 0:5b7b619f59cd 32 //Select channel already setup
jcobb 0:5b7b619f59cd 33 void select(PinName pin);
jcobb 0:5b7b619f59cd 34
jcobb 0:5b7b619f59cd 35 //Return burst mode enabled/disabled
jcobb 0:5b7b619f59cd 36 int burst(void);
jcobb 0:5b7b619f59cd 37
jcobb 0:5b7b619f59cd 38 /*Set start condition and edge according to mode:
jcobb 0:5b7b619f59cd 39 0 - No start (this value should be used when clearing PDN to 0).
jcobb 0:5b7b619f59cd 40 1 - Start conversion now.
jcobb 0:5b7b619f59cd 41 2 - Start conversion when the edge selected by bit 27 occurs on the P2.10 / EINT0 / NMI pin.
jcobb 0:5b7b619f59cd 42 3 - Start conversion when the edge selected by bit 27 occurs on the P1.27 / CLKOUT /
jcobb 0:5b7b619f59cd 43 USB_OVRCRn / CAP0.1 pin.
jcobb 0:5b7b619f59cd 44 4 - Start conversion when the edge selected by bit 27 occurs on MAT0.1. Note that this does
jcobb 0:5b7b619f59cd 45 not require that the MAT0.1 function appear on a device pin.
jcobb 0:5b7b619f59cd 46 5 - Start conversion when the edge selected by bit 27 occurs on MAT0.3. Note that it is not
jcobb 0:5b7b619f59cd 47 possible to cause the MAT0.3 function to appear on a device pin.
jcobb 0:5b7b619f59cd 48 6 - Start conversion when the edge selected by bit 27 occurs on MAT1.0. Note that this does
jcobb 0:5b7b619f59cd 49 not require that the MAT1.0 function appear on a device pin.
jcobb 0:5b7b619f59cd 50 7 - Start conversion when the edge selected by bit 27 occurs on MAT1.1. Note that this does
jcobb 0:5b7b619f59cd 51 not require that the MAT1.1 function appear on a device pin.
jcobb 0:5b7b619f59cd 52 When mode >= 2, conversion is triggered by edge:
jcobb 0:5b7b619f59cd 53 0 - Rising edge
jcobb 0:5b7b619f59cd 54 1 - Falling edge
jcobb 0:5b7b619f59cd 55 */
jcobb 0:5b7b619f59cd 56 void startmode(int mode, int edge);
jcobb 0:5b7b619f59cd 57
jcobb 0:5b7b619f59cd 58 //Return startmode state according to mode_edge=0: mode and mode_edge=1: edge
jcobb 0:5b7b619f59cd 59 int startmode(int mode_edge);
jcobb 0:5b7b619f59cd 60
jcobb 0:5b7b619f59cd 61 //Start ADC conversion
jcobb 0:5b7b619f59cd 62 void start(void);
jcobb 0:5b7b619f59cd 63
jcobb 0:5b7b619f59cd 64 //Set interrupt enable/disable for pin to state
jcobb 0:5b7b619f59cd 65 void interrupt_state(PinName pin, int state);
jcobb 0:5b7b619f59cd 66
jcobb 0:5b7b619f59cd 67 //Return enable/disable state of interrupt for pin
jcobb 0:5b7b619f59cd 68 int interrupt_state(PinName pin);
jcobb 0:5b7b619f59cd 69
jcobb 0:5b7b619f59cd 70 //Attach custom interrupt handler replacing default
jcobb 0:5b7b619f59cd 71 void attach(void(*fptr)(void));
jcobb 0:5b7b619f59cd 72
jcobb 0:5b7b619f59cd 73 //Restore default interrupt handler
jcobb 0:5b7b619f59cd 74 void detach(void);
jcobb 0:5b7b619f59cd 75
jcobb 0:5b7b619f59cd 76 //Append custom interrupt handler for pin
jcobb 0:5b7b619f59cd 77 void append(PinName pin, void(*fptr)(uint32_t value));
jcobb 0:5b7b619f59cd 78
jcobb 0:5b7b619f59cd 79 //Unappend custom interrupt handler for pin
jcobb 0:5b7b619f59cd 80 void unappend(PinName pin);
jcobb 0:5b7b619f59cd 81
jcobb 0:5b7b619f59cd 82 //Append custom global interrupt handler
jcobb 0:5b7b619f59cd 83 void append(void(*fptr)(int chan, uint32_t value));
jcobb 0:5b7b619f59cd 84
jcobb 0:5b7b619f59cd 85 //Unappend custom global interrupt handler
jcobb 0:5b7b619f59cd 86 void unappend(void);
jcobb 0:5b7b619f59cd 87
jcobb 0:5b7b619f59cd 88 //Set ADC offset to a value 0-7
jcobb 0:5b7b619f59cd 89 void offset(int offset);
jcobb 0:5b7b619f59cd 90
jcobb 0:5b7b619f59cd 91 //Return current ADC offset
jcobb 0:5b7b619f59cd 92 int offset(void);
jcobb 0:5b7b619f59cd 93
jcobb 0:5b7b619f59cd 94 //Return value of ADC on pin
jcobb 0:5b7b619f59cd 95 int read(PinName pin);
jcobb 0:5b7b619f59cd 96
jcobb 0:5b7b619f59cd 97 //Return DONE flag of ADC on pin
jcobb 0:5b7b619f59cd 98 int done(PinName pin);
jcobb 0:5b7b619f59cd 99
jcobb 0:5b7b619f59cd 100 //Return OVERRUN flag of ADC on pin
jcobb 0:5b7b619f59cd 101 int overrun(PinName pin);
jcobb 0:5b7b619f59cd 102
jcobb 0:5b7b619f59cd 103 //Return actual ADC clock
jcobb 0:5b7b619f59cd 104 int actual_adc_clock(void);
jcobb 0:5b7b619f59cd 105
jcobb 0:5b7b619f59cd 106 //Return actual maximum sample rate
jcobb 0:5b7b619f59cd 107 int actual_sample_rate(void);
jcobb 0:5b7b619f59cd 108
jcobb 0:5b7b619f59cd 109 //Return pin ID of ADC channel
jcobb 0:5b7b619f59cd 110 PinName channel_to_pin(int chan);
jcobb 0:5b7b619f59cd 111
jcobb 0:5b7b619f59cd 112 //Return pin number of ADC channel
jcobb 0:5b7b619f59cd 113 int channel_to_pin_number(int chan);
jcobb 0:5b7b619f59cd 114
jcobb 0:5b7b619f59cd 115
jcobb 0:5b7b619f59cd 116 private:
jcobb 0:5b7b619f59cd 117 int _pin_to_channel(PinName pin);
jcobb 0:5b7b619f59cd 118 uint32_t _data_of_pin(PinName pin);
jcobb 0:5b7b619f59cd 119
jcobb 0:5b7b619f59cd 120 int _adc_clk_freq;
jcobb 0:5b7b619f59cd 121 void adcisr(void);
jcobb 0:5b7b619f59cd 122 static void _adcisr(void);
jcobb 0:5b7b619f59cd 123 static ADC *instance;
jcobb 0:5b7b619f59cd 124
jcobb 0:5b7b619f59cd 125 uint32_t _adc_data[8];
jcobb 0:5b7b619f59cd 126 void(*_adc_isr[8])(uint32_t value);
jcobb 0:5b7b619f59cd 127 void(*_adc_g_isr)(int chan, uint32_t value);
jcobb 0:5b7b619f59cd 128 void(*_adc_m_isr)(void);
jcobb 0:5b7b619f59cd 129 };
jcobb 0:5b7b619f59cd 130
jcobb 0:5b7b619f59cd 131 #endif