amiro-lld / drivers / VCNL4020 / v1 / alld_VCNL4020.c @ e7af07e7
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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 | 9466e34d | Thomas Schöpping | * @file alld_VCNL4020.c
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| 21 | 5e2f673b | Marc Rothmann | * @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 | 1d5bcc82 | Thomas Schöpping | #include <alld_VCNL4020.h> |
| 28 | d6728c5b | Thomas Schöpping | |
| 29 | ef078306 | Thomas Schöpping | /******************************************************************************/
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| 30 | /* LOCAL DEFINITIONS */
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| 31 | /******************************************************************************/
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| 32 | |||
| 33 | /******************************************************************************/
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| 34 | /* EXPORTED VARIABLES */
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| 35 | /******************************************************************************/
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| 36 | |||
| 37 | /******************************************************************************/
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| 38 | /* LOCAL TYPES */
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| 39 | /******************************************************************************/
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| 40 | |||
| 41 | /******************************************************************************/
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| 42 | /* LOCAL VARIABLES */
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| 43 | /******************************************************************************/
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| 44 | |||
| 45 | /******************************************************************************/
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| 46 | /* LOCAL FUNCTIONS */
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| 47 | /******************************************************************************/
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| 48 | |||
| 49 | /******************************************************************************/
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| 50 | /* EXPORTED FUNCTIONS */
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| 51 | /******************************************************************************/
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| 52 | |||
| 53 | /* general single register access */
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| 54 | d6728c5b | Thomas Schöpping | |
| 55 | /**
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| 56 | * @brief Read the 8-bit data from any register.
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| 57 | * @param[in] vcnld The VCNL402 driver to use.
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| 58 | * @param[in] reg The register to read.
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| 59 | * @param[out] data The data read from the VCNL4020.
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| 60 | * @param[in] timeout Timeout for the function to return (in microseconds)
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| 61 | *
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| 62 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 63 | */
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| 64 | 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) |
| 65 | d6728c5b | Thomas Schöpping | {
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| 66 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 67 | apalDbgAssert(data != NULL);
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| 68 | |||
| 69 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, (uint8_t*)®, 1, data, 1, timeout); |
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| 70 | } |
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| 71 | |||
| 72 | /**
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| 73 | * @brief Write data to any 8-bit register.
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| 74 | * @param[in] vcnld The VCNL402 driver to use.
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| 75 | * @param[in] reg The register to write to.
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| 76 | * @param[in] data The data to write.
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| 77 | * @param[in] timeout Timeout for the function to return (in microseconds)
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| 78 | *
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| 79 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 80 | */
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| 81 | 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) |
| 82 | d6728c5b | Thomas Schöpping | {
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| 83 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 84 | |||
| 85 | uint8_t txbuf[2] = { reg, data };
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| 86 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 2, NULL, 0, timeout); |
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| 87 | } |
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| 88 | |||
| 89 | ef078306 | Thomas Schöpping | /* sensor result access */
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| 90 | d6728c5b | Thomas Schöpping | |
| 91 | /**
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| 92 | * @brief Read the result of the latest ambient light measurement.
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| 93 | *
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| 94 | * @param[in] vcnld The VCNL402 driver to use.
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| 95 | * @param[out] als Result of the latest ambient light measuremenet.
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| 96 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 97 | *
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| 98 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 99 | */
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| 100 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readals(const VCNL4020Driver* const vcnld, uint16_t* const als, const apalTime_t timeout) |
| 101 | d6728c5b | Thomas Schöpping | {
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| 102 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 103 | apalDbgAssert(als != NULL);
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| 104 | |||
| 105 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_ALRES_HIGH };
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| 106 | uint8_t rxbuf[2];
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| 107 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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| 108 | *als = (rxbuf[0] << 8) | rxbuf[1]; |
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| 109 | return status;
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| 110 | } |
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| 111 | |||
| 112 | /**
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| 113 | * @brief Read the result of the latest proximity measurement.
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| 114 | *
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| 115 | * @param[in] vcnld The VCNL402 driver to use.
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| 116 | * @param[out] prox Result of the latest proximity measuremenet.
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| 117 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 118 | *
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| 119 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 120 | */
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| 121 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readprox(const VCNL4020Driver* const vcnld, uint16_t* const prox, const apalTime_t timeout) |
| 122 | d6728c5b | Thomas Schöpping | {
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| 123 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 124 | apalDbgAssert(prox != NULL);
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| 125 | |||
| 126 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_PROXRES_HIGH };
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| 127 | uint8_t rxbuf[2];
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| 128 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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| 129 | *prox = (rxbuf[0] << 8) | rxbuf[1]; |
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| 130 | return status;
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| 131 | } |
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| 132 | |||
| 133 | /**
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| 134 | * @brief Read the results of the latest ambient light and proximity measurements.
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| 135 | *
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| 136 | * @param[in] vcnld The VCNL402 driver to use.
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| 137 | * @param[out] als Result of the latest ambient light measuremenet.
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| 138 | * @param[out] prox Result of the latest proximity measuremenet.
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| 139 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 140 | *
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| 141 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 142 | */
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| 143 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readalsandprox(const VCNL4020Driver* const vcnld, uint16_t* const als, uint16_t* const prox, const apalTime_t timeout) |
| 144 | d6728c5b | Thomas Schöpping | {
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| 145 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 146 | apalDbgAssert(als != NULL);
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| 147 | apalDbgAssert(prox != NULL);
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| 148 | |||
| 149 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_ALRES_HIGH };
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| 150 | uint8_t rxbuf[4];
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| 151 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 4, timeout); |
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| 152 | *als = (rxbuf[0] << 8) | rxbuf[1]; |
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| 153 | *prox = (rxbuf[2] << 8) | rxbuf[3]; |
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| 154 | return status;
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| 155 | } |
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| 156 | |||
| 157 | /*============================================================================*/
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| 158 | /* threshold register access */
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| 159 | /*============================================================================*/
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| 160 | |||
| 161 | /**
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| 162 | * @brief Read the current value of the low threshold.
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| 163 | *
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| 164 | * @param[in] vcnld The VCNL402 driver to use.
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| 165 | * @param[out] th Current value of the low threshold.
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| 166 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 167 | *
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| 168 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 169 | */
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| 170 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readlth(const VCNL4020Driver* const vcnld, uint16_t* const th, const apalTime_t timeout) |
| 171 | d6728c5b | Thomas Schöpping | {
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| 172 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 173 | apalDbgAssert(th != NULL);
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| 174 | |||
| 175 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_LTH_HIGH };
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| 176 | uint8_t rxbuf[2];
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| 177 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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| 178 | *th = (rxbuf[0] << 8) | rxbuf[1]; |
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| 179 | return status;
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| 180 | } |
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| 181 | |||
| 182 | /**
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| 183 | * @brief Read the current value of the high threshold.
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| 184 | *
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| 185 | * @param[in] vcnld The VCNL402 driver to use.
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| 186 | * @param[out] th Current value of the high threshold.
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| 187 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 188 | *
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| 189 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 190 | */
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| 191 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readhth(const VCNL4020Driver* const vcnld, uint16_t* const th, const apalTime_t timeout) |
| 192 | d6728c5b | Thomas Schöpping | {
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| 193 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 194 | apalDbgAssert(th != NULL);
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| 195 | |||
| 196 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_HTH_HIGH };
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| 197 | uint8_t rxbuf[2];
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| 198 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 2, timeout); |
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| 199 | *th = (rxbuf[0] << 8) | rxbuf[1]; |
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| 200 | return status;
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| 201 | } |
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| 202 | |||
| 203 | /**
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| 204 | * @brief Read the current value of both (high and low) thresholds.
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| 205 | *
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| 206 | * @param[in] vcnld The VCNL402 driver to use.
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| 207 | * @param[out] lth Current value of the low threshold.
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| 208 | * @param[out] hth Current value of the high threshold.
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| 209 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 210 | *
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| 211 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 212 | */
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| 213 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_readth(const VCNL4020Driver* const vcnld, uint16_t* const lth, uint16_t* const hth, const apalTime_t timeout) |
| 214 | d6728c5b | Thomas Schöpping | {
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| 215 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 216 | apalDbgAssert(lth != NULL);
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| 217 | apalDbgAssert(hth != NULL);
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| 218 | |||
| 219 | uint8_t txbuf[1] = { VCNL4020_LLD_REGADDR_LTH_HIGH };
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| 220 | uint8_t rxbuf[4];
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| 221 | apalExitStatus_t status = apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 1, rxbuf, 4, timeout); |
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| 222 | *lth = (rxbuf[0] << 8) | rxbuf[1]; |
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| 223 | *hth = (rxbuf[2] << 8) | rxbuf[3]; |
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| 224 | return status;
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| 225 | } |
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| 226 | |||
| 227 | /**
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| 228 | * @brief Set the low threshold value.
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| 229 | *
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| 230 | * @param[in] vcnld The VCNL402 driver to use.
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| 231 | * @param[in] th The new threshold value to write.
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| 232 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 233 | *
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| 234 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 235 | */
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| 236 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writelth(const VCNL4020Driver* const vcnld, const uint16_t th, const apalTime_t timeout) |
| 237 | d6728c5b | Thomas Schöpping | {
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| 238 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 239 | |||
| 240 | uint8_t txbuf[3] = { VCNL4020_LLD_REGADDR_LTH_HIGH ,(th & 0xFF00u) >> 8, th & 0x00FFu }; |
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| 241 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 3, NULL, 0, timeout); |
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| 242 | } |
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| 243 | |||
| 244 | /**
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| 245 | * @brief Set the high threshold value.
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| 246 | *
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| 247 | * @param[in] vcnld The VCNL402 driver to use.
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| 248 | * @param[in] th The new threshold value to write.
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| 249 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 250 | *
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| 251 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 252 | */
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| 253 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writehth(const VCNL4020Driver* const vcnld, const uint16_t th, const apalTime_t timeout) |
| 254 | d6728c5b | Thomas Schöpping | {
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| 255 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 256 | |||
| 257 | uint8_t txbuf[3] = { VCNL4020_LLD_REGADDR_HTH_HIGH, (th & 0xFF00u) >> 8, th & 0x00FFu }; |
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| 258 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 3, NULL, 0, timeout); |
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| 259 | } |
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| 260 | |||
| 261 | /**
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| 262 | * @brief Set both (high and low) threshold values.
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| 263 | *
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| 264 | * @param[in] vcnld The VCNL402 driver to use.
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| 265 | * @param[in] lth The new value of the low threshold.
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| 266 | * @param[in] hth The new value of the high threshold.
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| 267 | * @param[in] timeout Timeout for the function to return (in microseconds).
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| 268 | *
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| 269 | * @return The return status indicates whether the function call was succesfull or a timeout occurred.
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| 270 | */
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| 271 | 21076167 | Thomas Schöpping | apalExitStatus_t vcnl4020_lld_writeth(const VCNL4020Driver* const vcnld, const uint16_t lth, const uint16_t hth, const apalTime_t timeout) |
| 272 | d6728c5b | Thomas Schöpping | {
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| 273 | apalDbgAssert(vcnld != NULL && vcnld->i2cd != NULL); |
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| 274 | |||
| 275 | uint8_t txbuf[5] = { VCNL4020_LLD_REGADDR_LTH_HIGH, (lth & 0xFF00u) >> 8, lth & 0x00FFu, (hth & 0xFF00u) >> 8, hth & 0x00FFu }; |
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| 276 | return apalI2CMasterTransmit(vcnld->i2cd, (apalI2Caddr_t)VCNL4020_LLD_I2C_ADDR, txbuf, 5, NULL, 0, timeout); |
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| 277 | } |
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| 278 | |||
| 279 | 5e2f673b | Marc Rothmann | /** @} */
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