amiro-lld / drivers / P9221R / v1 / alld_P9221R.c @ 0b0996ce
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1 | 6ef38c23 | Julia Niermann | /*
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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 | Copyright (C) 2016..2019 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 Lesser 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 Lesser General Public License for more details.
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14 | |||
15 | You should have received a copy of the GNU Lesser 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 | /**
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20 | e7af07e7 | Julia Niermann | * @file alld_P9221R.c
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21 | 6ef38c23 | Julia Niermann | *
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22 | 0b0996ce | Julia Niermann | * @brief qi charger
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23 | 6ef38c23 | Julia Niermann | *
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24 | * @addtogroup lld_power
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25 | * @{
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26 | */
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27 | |||
28 | 0b0996ce | Julia Niermann | |
29 | 54dbb62d | Julia Niermann | #include <alld_P9221R.h> |
30 | 6ef38c23 | Julia Niermann | |
31 | /******************************************************************************/
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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 | /**
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56 | * @brief Read the value of one or more of the registers.
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57 | * @param[in] i2cd i2c driver
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58 | * @param[in] PRd p9221r driver
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59 | * @param[in] addr register address
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60 | * @param[out] data register content
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61 | * @param[in] num number of subsequent registers to read
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62 | * @param[in] timeout timeout
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63 | * @return An indicator whether the call was successfull
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64 | */
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65 | 9797f02a | Julia Niermann | apalExitStatus_t p9221r_lld_read_register(const P9221RDriver* const p9221r, const p9221r_lld_register_t addr, uint8_t* const data, const uint8_t num, const apalTime_t timeout) |
66 | 6ef38c23 | Julia Niermann | { |
67 | apalDbgAssert(p9221r != NULL);
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68 | apalDbgAssert(p9221r->i2cd != NULL);
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69 | apalDbgAssert(data != NULL);
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70 | |||
71 | 73345246 | Julia Niermann | uint8_t tx[2] = {(addr & 0xFF00) >> 8, addr & 0x00FF}; |
72 | |||
73 | apalExitStatus_t status = apalI2CMasterTransmit(p9221r->i2cd, (P9221R_LLD_I2C_ADDR_FIXED | p9221r->addr), tx, 2, data, num, timeout);
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74 | c4db2363 | Julia Niermann | |
75 | 6ef38c23 | Julia Niermann | return status;
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76 | } |
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77 | |||
78 | /**
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79 | * @brief Write the value of one or more of the registers.
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80 | * @param[in] i2cd i2c driver
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81 | * @param[in] PRd p9221r driver
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82 | * @param[in] addr register address
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83 | * @param[in] data data to write
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84 | * @param[in] num number of subsequent registers to read
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85 | * @param[in] timeout timeout
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86 | * @return An indicator whether the call was successfull
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87 | */
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88 | 2344a771 | Julia Niermann | apalExitStatus_t p9221r_lld_write_register(const P9221RDriver* const p9221r, const p9221r_lld_register_t addr, const uint16_t* const data, const uint8_t num, const apalTime_t timeout) |
89 | 6ef38c23 | Julia Niermann | { |
90 | apalDbgAssert(p9221r != NULL);
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91 | apalDbgAssert(p9221r->i2cd != NULL);
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92 | apalDbgAssert(data != NULL);
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93 | |||
94 | uint8_t buffer[1+2*num]; |
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95 | buffer[0] = addr;
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96 | for (uint8_t dataIdx = 0; dataIdx < num; dataIdx++) { |
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97 | buffer[dataIdx*2+1] = data[dataIdx] >> 8; |
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98 | buffer[dataIdx*2+2] = data[dataIdx] & (0x00FFu); |
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99 | } |
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100 | 2344a771 | Julia Niermann | return apalI2CMasterTransmit(p9221r->i2cd, (P9221R_LLD_I2C_ADDR_FIXED | p9221r->addr), buffer, 1+2*num, NULL, 0, timeout); |
101 | 6ef38c23 | Julia Niermann | } |
102 | |||
103 | 9797f02a | Julia Niermann | /**
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104 | 9be47646 | Julia Niermann | * @brief Read the alignment.
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105 | 9797f02a | Julia Niermann | * @param[in] PRd p9221r driver
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106 | 9be47646 | Julia Niermann | * @param[out] alignment alignment register content
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107 | 9797f02a | Julia Niermann | * @param[in] timeout timeout
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108 | * @return An indicator whether the call was successfull
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109 | */
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110 | 9be47646 | Julia Niermann | apalExitStatus_t p9221r_lld_read_alignment(const P9221RDriver* const p9221r, int8_t* const alignment, const apalTime_t timeout) |
111 | 9797f02a | Julia Niermann | { |
112 | 9be47646 | Julia Niermann | apalExitStatus_t status = p9221r_lld_read_register(p9221r, P9221R_LLD_REGISTER_ALIGNMENT_X, (uint8_t*) alignment, 2, timeout);
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113 | 9797f02a | Julia Niermann | |
114 | return status;
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115 | } |
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116 | |||
117 | /**
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118 | * @brief Read the voltage.
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119 | * @param[in] i2cd i2c driver
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120 | * @param[in] PRd p9221r driver
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121 | * @param[out] voltage voltage register content
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122 | * @param[in] timeout timeout
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123 | * @return An indicator whether the call was successfull
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124 | */
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125 | c89b966e | Ruben Lipperts | apalExitStatus_t p9221r_lld_read_voltage(const P9221RDriver* const p9221r, float* const voltage, const apalTime_t timeout) |
126 | 9797f02a | Julia Niermann | { |
127 | c89b966e | Ruben Lipperts | uint8_t buffer[2];
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128 | uint16_t value; |
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129 | |||
130 | 9be47646 | Julia Niermann | apalExitStatus_t status = p9221r_lld_read_register(p9221r, P9221R_LLD_I2C_ADDR_FIXED, buffer, 2, timeout);
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131 | |||
132 | 247b3413 | Julia Niermann | value = ((buffer[1] & 0x0F) << 8) | buffer[0]; // 4MSB are in buffer[1] so we shift and mask, 8LSB are in buffer[0] |
133 | *voltage = (((float) value) * 6 * 2.1f)/4095.0f; |
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134 | 9797f02a | Julia Niermann | |
135 | return status;
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136 | } |
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137 | |||
138 | /**
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139 | * @brief Read the current.
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140 | * @param[in] i2cd i2c driver
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141 | * @param[in] PRd p9221r driver
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142 | * @param[out] current register content
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143 | * @param[in] timeout timeout
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144 | * @return An indicator whether the call was successfull
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145 | */
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146 | c89b966e | Ruben Lipperts | apalExitStatus_t p9221r_lld_read_current(const P9221RDriver* const p9221r, float* const current, const apalTime_t timeout) |
147 | 9797f02a | Julia Niermann | { |
148 | c89b966e | Ruben Lipperts | uint8_t buffer[2];
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149 | uint16_t value; |
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150 | |||
151 | 9be47646 | Julia Niermann | apalExitStatus_t status = p9221r_lld_read_register(p9221r, P9221R_LLD_REGISTER_IOUT_CURRENT_LSB, buffer, 2, timeout);
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152 | c89b966e | Ruben Lipperts | value = (buffer[1] << 8) | buffer[0]; // 8MSB are in buffer[1] so we shift, 8LSB are in buffer[0] |
153 | 247b3413 | Julia Niermann | *current = (((float) value) * 2 * 2.1f)/4095.0f; |
154 | 9797f02a | Julia Niermann | |
155 | return status;
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156 | } |
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157 | |||
158 | e7af07e7 | Julia Niermann | /** @} */
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