amiro-os / os / hal / include / hal_qei.h @ b6b45e4c
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1 | e545e620 | Thomas Schöpping | /*
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2 | AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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3 | Copyright (C) 2016..2018 Thomas Schöpping et al.
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4 | |||
5 | This program is free software: you can redistribute it and/or modify
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6 | it under the terms of the GNU General Public License as published by
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7 | the Free Software Foundation, either version 3 of the License, or
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8 | (at your option) any later version.
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9 | |||
10 | This program is distributed in the hope that it will be useful,
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | GNU General Public License for more details.
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14 | |||
15 | You should have received a copy of the GNU General Public License
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16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 | |||
19 | 3f899f5d | Thomas Schöpping | /**
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20 | e545e620 | Thomas Schöpping | * @file hal_qei.h
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21 | 3f899f5d | Thomas Schöpping | * @brief QEI Driver macros and structures.
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22 | *
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23 | * @addtogroup QEI
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24 | * @{
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25 | */
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26 | |||
27 | e545e620 | Thomas Schöpping | #ifndef _HAL_QEI_H_
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28 | #define _HAL_QEI_H_
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29 | 58fe0e0b | Thomas Schöpping | |
30 | #if HAL_USE_QEI || defined(__DOXYGEN__)
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31 | |||
32 | /*===========================================================================*/
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33 | /* Driver constants. */
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34 | /*===========================================================================*/
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35 | |||
36 | /*===========================================================================*/
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37 | /* Driver pre-compile time settings. */
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38 | /*===========================================================================*/
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39 | |||
40 | /*===========================================================================*/
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41 | /* Derived constants and error checks. */
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42 | /*===========================================================================*/
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43 | |||
44 | /*===========================================================================*/
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45 | /* Driver data structures and types. */
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46 | /*===========================================================================*/
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47 | |||
48 | /**
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49 | * @brief Driver state machine possible states.
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50 | */
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51 | typedef enum { |
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52 | QEI_UNINIT = 0, /**< Not initialized. */ |
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53 | QEI_STOP = 1, /**< Stopped. */ |
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54 | QEI_READY = 2, /**< Ready. */ |
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55 | QEI_ACTIVE = 4, /**< Active. */ |
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56 | } qeistate_t; |
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57 | |||
58 | /**
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59 | * @brief Type of a structure representing an QEI driver.
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60 | */
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61 | typedef struct QEIDriver QEIDriver; |
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62 | |||
63 | e545e620 | Thomas Schöpping | #include "hal_qei_lld.h" |
64 | 58fe0e0b | Thomas Schöpping | |
65 | /*===========================================================================*/
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66 | /* Driver macros. */
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67 | /*===========================================================================*/
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68 | |||
69 | /**
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70 | * @name Macro Functions
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71 | * @{
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72 | */
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73 | /**
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74 | * @brief Enables the quadrature encoder.
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75 | *
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76 | * @param[in] qeip pointer to the @p QEIDriver object
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77 | *
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78 | * @iclass
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79 | */
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80 | #define qeiEnableI(qeip) qei_lld_enable(qeip)
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81 | |||
82 | /**
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83 | * @brief Disables the quadrature encoder.
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84 | *
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85 | * @param[in] qeip pointer to the @p QEIDriver object
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86 | *
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87 | * @iclass
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88 | */
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89 | #define qeiDisableI(qeip) qei_lld_disable(qeip)
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90 | |||
91 | /**
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92 | * @brief Returns the direction of the last transition.
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93 | * @details The direction is defined as boolean and is
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94 | * calculated at each transition on any input.
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95 | *
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96 | * @param[in] qeip pointer to the @p QEIDriver object
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97 | * @return The request direction.
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98 | * @retval FALSE Position counted up.
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99 | * @retval TRUE Position counted down.
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100 | * @iclass
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101 | */
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102 | #define qeiGetDirectionI(qeip) qei_lld_get_direction(qeip)
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103 | |||
104 | /**
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105 | * @brief Returns the position of the encoder.
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106 | * @details The position is defined as number of pulses since last reset.
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107 | *
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108 | * @param[in] qeip pointer to the @p QEIDriver object
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109 | * @return The number of pulses.
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110 | *
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111 | * @iclass
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112 | */
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113 | #define qeiGetPositionI(qeip) qei_lld_get_position(qeip)
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114 | |||
115 | /**
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116 | * @brief Returns the range of the encoder.
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117 | * @details The range is defined as number of maximum pulse count.
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118 | *
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119 | * @param[in] qeip pointer to the @p QEIDriver object
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120 | * @return The number of pulses.
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121 | *
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122 | * @iclass
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123 | */
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124 | #define qeiGetRangeI(qeip) qei_lld_get_range(qeip)
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125 | /** @} */
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126 | |||
127 | /*===========================================================================*/
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128 | /* External declarations. */
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129 | /*===========================================================================*/
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130 | |||
131 | #ifdef __cplusplus
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132 | extern "C" { |
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133 | #endif
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134 | void qeiInit(void); |
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135 | void qeiObjectInit(QEIDriver *qeip);
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136 | void qeiStart(QEIDriver *qeip, const QEIConfig *config); |
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137 | void qeiStop(QEIDriver *qeip);
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138 | void qeiEnable(QEIDriver *qeip);
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139 | void qeiDisable(QEIDriver *qeip);
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140 | #ifdef __cplusplus
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141 | } |
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142 | #endif
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143 | |||
144 | #endif /* HAL_USE_QEI */ |
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145 | |||
146 | e545e620 | Thomas Schöpping | #endif /* _HAL_QEI_H_ */ |
147 | 3f899f5d | Thomas Schöpping | |
148 | /** @} */ |