amiro-lld / source / alld_vcnl4020.c @ 21076167
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1 | d6728c5b | Thomas Schöpping | /*
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2 | AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
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3 | f125ae07 | Thomas Schöpping | Copyright (C) 2016..2019 Thomas Schöpping et al.
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4 | d6728c5b | Thomas Schöpping | |
5 | This program is free software: you can redistribute it and/or modify
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6 | f0ca400f | Thomas Schöpping | it under the terms of the GNU Lesser General Public License as published by
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7 | d6728c5b | Thomas Schöpping | 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 | f0ca400f | Thomas Schöpping | GNU Lesser General Public License for more details.
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14 | d6728c5b | Thomas Schöpping | |
15 | f0ca400f | Thomas Schöpping | You should have received a copy of the GNU Lesser General Public License
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16 | d6728c5b | Thomas Schöpping | along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 | |||
19 | 5e2f673b | Marc Rothmann | /**
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20 | * @file alld_vcnl4020.c
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21 | * @brief Proximity Sensor function implementations.
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22 | *
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23 | * @addtogroup lld_proximity
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24 | * @{
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25 | */
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26 | |||
27 | d6728c5b | Thomas Schöpping | #include <alld_vcnl4020.h> |
28 | |||
29 | #if defined(AMIROLLD_CFG_USE_VCNL4020) || defined(__DOXYGEN__)
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30 | |||
31 | ef078306 | Thomas Schöpping | /******************************************************************************/
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32 | /* LOCAL DEFINITIONS */
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33 | /******************************************************************************/
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34 | |||
35 | /******************************************************************************/
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36 | /* EXPORTED VARIABLES */
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37 | /******************************************************************************/
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38 | |||
39 | /******************************************************************************/
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40 | /* LOCAL TYPES */
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41 | /******************************************************************************/
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42 | |||
43 | /******************************************************************************/
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44 | /* LOCAL VARIABLES */
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45 | /******************************************************************************/
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46 | |||
47 | /******************************************************************************/
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48 | /* LOCAL FUNCTIONS */
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49 | /******************************************************************************/
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50 | |||
51 | /******************************************************************************/
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52 | /* EXPORTED FUNCTIONS */
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53 | /******************************************************************************/
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54 | |||
55 | /* general single register access */
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56 | d6728c5b | Thomas Schöpping | |
57 | /**
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58 | * @brief Read the 8-bit data from any register.
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59 | * @param[in] vcnld The VCNL402 driver to use.
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60 | * @param[in] reg The register to read.
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61 | * @param[out] data The data read from the VCNL4020.
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62 | * @param[in] timeout Timeout for the function to return (in microseconds)
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63 | *
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64 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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65 | */
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66 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readreg(const VCNL4020Driver* const vcnld, const vcnl4020_lld_regaddr_t reg, uint8_t* const data, const apalTime_t timeout) |
67 | d6728c5b | Thomas Schöpping | { |
68 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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69 | apalDbgAssert(data != NULL);
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70 | |||
71 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, (uint8_t*)®, 1, data, 1, timeout); |
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72 | } |
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73 | |||
74 | /**
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75 | * @brief Write data to any 8-bit register.
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76 | * @param[in] vcnld The VCNL402 driver to use.
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77 | * @param[in] reg The register to write to.
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78 | * @param[in] data The data to write.
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79 | * @param[in] timeout Timeout for the function to return (in microseconds)
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80 | *
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81 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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82 | */
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83 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writereg(const VCNL4020Driver* const vcnld, const vcnl4020_lld_regaddr_t reg, const uint8_t data, const apalTime_t timeout) |
84 | d6728c5b | Thomas Schöpping | { |
85 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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86 | |||
87 | uint8_t txbuf[2] = { reg, data };
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88 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 2, NULL, 0, timeout); |
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89 | } |
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90 | |||
91 | ef078306 | Thomas Schöpping | /* sensor result access */
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92 | d6728c5b | Thomas Schöpping | |
93 | /**
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94 | * @brief Read the result of the latest ambient light measurement.
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95 | *
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96 | * @param[in] vcnld The VCNL402 driver to use.
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97 | * @param[out] als Result of the latest ambient light measuremenet.
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98 | * @param[in] timeout Timeout for the function to return (in microseconds).
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99 | *
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100 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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101 | */
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102 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readals(const VCNL4020Driver* const vcnld, uint16_t* const als, const apalTime_t timeout) |
103 | d6728c5b | Thomas Schöpping | { |
104 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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105 | apalDbgAssert(als != NULL);
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106 | |||
107 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_ALRES_HIGH };
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108 | uint8_t rxbuf[2];
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109 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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110 | *als = (rxbuf[0] << 8) | rxbuf[1]; |
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111 | return status;
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112 | } |
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113 | |||
114 | /**
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115 | * @brief Read the result of the latest proximity measurement.
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116 | *
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117 | * @param[in] vcnld The VCNL402 driver to use.
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118 | * @param[out] prox Result of the latest proximity measuremenet.
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119 | * @param[in] timeout Timeout for the function to return (in microseconds).
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120 | *
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121 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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122 | */
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123 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readprox(const VCNL4020Driver* const vcnld, uint16_t* const prox, const apalTime_t timeout) |
124 | d6728c5b | Thomas Schöpping | { |
125 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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126 | apalDbgAssert(prox != NULL);
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127 | |||
128 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_PROXRES_HIGH };
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129 | uint8_t rxbuf[2];
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130 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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131 | *prox = (rxbuf[0] << 8) | rxbuf[1]; |
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132 | return status;
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133 | } |
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134 | |||
135 | /**
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136 | * @brief Read the results of the latest ambient light and proximity measurements.
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137 | *
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138 | * @param[in] vcnld The VCNL402 driver to use.
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139 | * @param[out] als Result of the latest ambient light measuremenet.
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140 | * @param[out] prox Result of the latest proximity measuremenet.
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141 | * @param[in] timeout Timeout for the function to return (in microseconds).
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142 | *
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143 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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144 | */
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145 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readalsandprox(const VCNL4020Driver* const vcnld, uint16_t* const als, uint16_t* const prox, const apalTime_t timeout) |
146 | d6728c5b | Thomas Schöpping | { |
147 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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148 | apalDbgAssert(als != NULL);
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149 | apalDbgAssert(prox != NULL);
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150 | |||
151 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_ALRES_HIGH };
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152 | uint8_t rxbuf[4];
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153 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 4, timeout); |
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154 | *als = (rxbuf[0] << 8) | rxbuf[1]; |
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155 | *prox = (rxbuf[2] << 8) | rxbuf[3]; |
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156 | return status;
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157 | } |
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158 | |||
159 | /*============================================================================*/
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160 | /* threshold register access */
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161 | /*============================================================================*/
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162 | |||
163 | /**
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164 | * @brief Read the current value of the low threshold.
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165 | *
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166 | * @param[in] vcnld The VCNL402 driver to use.
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167 | * @param[out] th Current value of the low threshold.
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168 | * @param[in] timeout Timeout for the function to return (in microseconds).
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169 | *
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170 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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171 | */
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172 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readlth(const VCNL4020Driver* const vcnld, uint16_t* const th, const apalTime_t timeout) |
173 | d6728c5b | Thomas Schöpping | { |
174 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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175 | apalDbgAssert(th != NULL);
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176 | |||
177 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_LTH_HIGH };
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178 | uint8_t rxbuf[2];
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179 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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180 | *th = (rxbuf[0] << 8) | rxbuf[1]; |
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181 | return status;
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182 | } |
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183 | |||
184 | /**
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185 | * @brief Read the current value of the high threshold.
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186 | *
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187 | * @param[in] vcnld The VCNL402 driver to use.
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188 | * @param[out] th Current value of the high threshold.
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189 | * @param[in] timeout Timeout for the function to return (in microseconds).
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190 | *
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191 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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192 | */
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193 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readhth(const VCNL4020Driver* const vcnld, uint16_t* const th, const apalTime_t timeout) |
194 | d6728c5b | Thomas Schöpping | { |
195 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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196 | apalDbgAssert(th != NULL);
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197 | |||
198 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_HTH_HIGH };
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199 | uint8_t rxbuf[2];
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200 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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201 | *th = (rxbuf[0] << 8) | rxbuf[1]; |
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202 | return status;
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203 | } |
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204 | |||
205 | /**
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206 | * @brief Read the current value of both (high and low) thresholds.
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207 | *
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208 | * @param[in] vcnld The VCNL402 driver to use.
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209 | * @param[out] lth Current value of the low threshold.
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210 | * @param[out] hth Current value of the high threshold.
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211 | * @param[in] timeout Timeout for the function to return (in microseconds).
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212 | *
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213 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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214 | */
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215 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readth(const VCNL4020Driver* const vcnld, uint16_t* const lth, uint16_t* const hth, const apalTime_t timeout) |
216 | d6728c5b | Thomas Schöpping | { |
217 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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218 | apalDbgAssert(lth != NULL);
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219 | apalDbgAssert(hth != NULL);
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220 | |||
221 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_LTH_HIGH };
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222 | uint8_t rxbuf[4];
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223 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 4, timeout); |
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224 | *lth = (rxbuf[0] << 8) | rxbuf[1]; |
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225 | *hth = (rxbuf[2] << 8) | rxbuf[3]; |
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226 | return status;
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227 | } |
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228 | |||
229 | /**
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230 | * @brief Set the low threshold value.
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231 | *
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232 | * @param[in] vcnld The VCNL402 driver to use.
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233 | * @param[in] th The new threshold value to write.
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234 | * @param[in] timeout Timeout for the function to return (in microseconds).
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235 | *
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236 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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237 | */
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238 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writelth(const VCNL4020Driver* const vcnld, const uint16_t th, const apalTime_t timeout) |
239 | d6728c5b | Thomas Schöpping | { |
240 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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241 | |||
242 | uint8_t txbuf[3] = { VCNL4020_LLD_REGADDR_LTH_HIGH ,(th & 0xFF00u) >> 8, th & 0x00FFu }; |
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243 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 3, NULL, 0, timeout); |
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244 | } |
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245 | |||
246 | /**
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247 | * @brief Set the high threshold value.
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248 | *
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249 | * @param[in] vcnld The VCNL402 driver to use.
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250 | * @param[in] th The new threshold value to write.
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251 | * @param[in] timeout Timeout for the function to return (in microseconds).
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252 | *
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253 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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254 | */
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255 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writehth(const VCNL4020Driver* const vcnld, const uint16_t th, const apalTime_t timeout) |
256 | d6728c5b | Thomas Schöpping | { |
257 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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258 | |||
259 | uint8_t txbuf[3] = { VCNL4020_LLD_REGADDR_HTH_HIGH, (th & 0xFF00u) >> 8, th & 0x00FFu }; |
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260 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 3, NULL, 0, timeout); |
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261 | } |
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262 | |||
263 | /**
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264 | * @brief Set both (high and low) threshold values.
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265 | *
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266 | * @param[in] vcnld The VCNL402 driver to use.
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267 | * @param[in] lth The new value of the low threshold.
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268 | * @param[in] hth The new value of the high threshold.
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269 | * @param[in] timeout Timeout for the function to return (in microseconds).
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270 | *
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271 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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272 | */
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273 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writeth(const VCNL4020Driver* const vcnld, const uint16_t lth, const uint16_t hth, const apalTime_t timeout) |
274 | d6728c5b | Thomas Schöpping | { |
275 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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276 | |||
277 | uint8_t txbuf[5] = { VCNL4020_LLD_REGADDR_LTH_HIGH, (lth & 0xFF00u) >> 8, lth & 0x00FFu, (hth & 0xFF00u) >> 8, hth & 0x00FFu }; |
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278 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 5, NULL, 0, timeout); |
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279 | } |
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280 | |||
281 | #endif /* defined(AMIROLLD_CFG_USE_VCNL4020) */ |
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282 | 5e2f673b | Marc Rothmann | |
283 | /** @} */ |