1 | /** |
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2 | * @file adc-defs.h |
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3 | * |
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4 | * @ingroup lpc176x |
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5 | * |
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6 | * @brief ADC library for the lpc176x bsp. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2014 Taller Technologies. |
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11 | * |
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12 | * @author Diaz Marcos (marcos.diaz@tallertechnologies.com) |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.org/license/LICENSE. |
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17 | */ |
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18 | #ifndef LPC176X_ADC_DEFS_H |
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19 | #define LPC176X_ADC_DEFS_H |
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20 | |
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21 | #include <bsp.h> |
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22 | #include <bsp/io.h> |
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23 | #include <bsp/lpc176x.h> |
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24 | #include <bsp/adc.h> |
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25 | |
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26 | #ifdef __cplusplus |
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27 | extern "C" { |
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28 | #endif /* __cplusplus */ |
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29 | |
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30 | /** |
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31 | * @brief The ADC inputs of the board. |
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32 | */ |
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33 | typedef enum { |
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34 | ADC_0, |
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35 | ADC_1, |
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36 | ADC_2, |
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37 | ADC_3, |
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38 | ADC_4, |
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39 | ADC_5, |
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40 | ADC_6, |
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41 | ADC_7, |
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42 | ADC_DEVICES_COUNT |
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43 | } lpc176x_adc_number; |
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44 | |
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45 | #define MAX_ADC_CLK 13000000u |
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46 | |
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47 | #define ADC_RANGE 0xFFFu |
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48 | |
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49 | #define ADC_NUMBER_VALID( number ) ( ( (uint32_t) number ) < \ |
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50 | ADC_DEVICES_COUNT ) |
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51 | |
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52 | #define ADC_CR_SEL( val ) BSP_FLD32( val, 0, 7 ) |
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53 | #define ADC_CR_SEL_GET( val ) BSP_FLD32GET( val, 0, 7 ) |
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54 | #define ADC_CR_SEL_SET( reg, val ) BSP_FLD32SET( reg, val, 0, 7 ) |
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55 | #define ADC_CR_CLKDIV( val ) BSP_FLD32( val, 8, 15 ) |
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56 | #define ADC_CR_CLKDIV_GET( reg ) BSP_FLD32GET( reg, 8, 15 ) |
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57 | #define ADC_CR_CLKDIV_SET( reg, val ) BSP_FLD32SET( reg, val, 8, 15 ) |
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58 | #define ADC_CR_BURST BSP_BIT32( 16 ) |
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59 | #define ADC_CR_CLKS( val ) BSP_FLD32( val, 17, 19 ) |
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60 | #define ADC_CR_PDN BSP_BIT32( 21 ) |
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61 | #define ADC_CR_START_NOW BSP_BIT32( 24 ) |
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62 | #define ADC_CR_START( val ) BSP_FLD32( val, 24, 26 ) |
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63 | #define ADC_CR_EDGE BSP_BIT32( 27 ) |
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64 | |
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65 | #define ADC_DR_VALUE( reg ) BSP_FLD32GET( reg, 4, 15 ) |
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66 | #define ADC_DR_OVERRUN BSP_BIT32( 30 ) |
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67 | #define ADC_DR_DONE BSP_BIT32( 31 ) |
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68 | |
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69 | #define ADC_DATA_CONVERSION_DONE( val ) ( ( val & ADC_DR_DONE ) != 0u ) |
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70 | |
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71 | /** |
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72 | * @brief The ADC low-level device. |
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73 | */ |
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74 | typedef struct { |
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75 | volatile uint32_t ADCR; |
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76 | volatile uint32_t ADGDR; |
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77 | volatile uint32_t RESERVED0; |
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78 | volatile uint32_t ADINTEN; |
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79 | volatile uint32_t ADDR[ ADC_DEVICES_COUNT ]; |
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80 | volatile uint32_t ADSTAT; |
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81 | volatile uint32_t ADTRM; |
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82 | } lpc176x_adc_device; |
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83 | |
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84 | /** |
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85 | * @brief Represents the pin and function for each ADC input. |
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86 | */ |
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87 | typedef struct { |
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88 | uint32_t pin_number; |
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89 | lpc176x_pin_function pin_function; |
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90 | } lpc176x_adc_pin_map; |
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91 | |
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92 | #ifdef __cplusplus |
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93 | } |
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94 | #endif /* __cplusplus */ |
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95 | |
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96 | #endif |
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