library for MAX14661 16:2 mux
Dependents: ard2pmod MAX14661_Demo
max14661.cpp@0:c770ad7363c8, 2014-11-17 (annotated)
- Committer:
- j3
- Date:
- Mon Nov 17 21:22:48 2014 +0000
- Revision:
- 0:c770ad7363c8
- Child:
- 1:c1fdfe4c2354
first release, JJJ
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 0:c770ad7363c8 | 1 | /******************************************************************//** |
j3 | 0:c770ad7363c8 | 2 | * @file max14661.cpp |
j3 | 0:c770ad7363c8 | 3 | * |
j3 | 0:c770ad7363c8 | 4 | * @author Justin Jordan |
j3 | 0:c770ad7363c8 | 5 | * |
j3 | 0:c770ad7363c8 | 6 | * @version 0.0 |
j3 | 0:c770ad7363c8 | 7 | * |
j3 | 0:c770ad7363c8 | 8 | * Started: 11NOV14 |
j3 | 0:c770ad7363c8 | 9 | * |
j3 | 0:c770ad7363c8 | 10 | * Updated: |
j3 | 0:c770ad7363c8 | 11 | * |
j3 | 0:c770ad7363c8 | 12 | * @brief Source file for MAX14661 class |
j3 | 0:c770ad7363c8 | 13 | * |
j3 | 0:c770ad7363c8 | 14 | *********************************************************************** |
j3 | 0:c770ad7363c8 | 15 | * |
j3 | 0:c770ad7363c8 | 16 | * @copyright |
j3 | 0:c770ad7363c8 | 17 | * Copyright (C) 2013 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 0:c770ad7363c8 | 18 | * |
j3 | 0:c770ad7363c8 | 19 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 0:c770ad7363c8 | 20 | * copy of this software and associated documentation files (the "Software"), |
j3 | 0:c770ad7363c8 | 21 | * to deal in the Software without restriction, including without limitation |
j3 | 0:c770ad7363c8 | 22 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 0:c770ad7363c8 | 23 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 0:c770ad7363c8 | 24 | * Software is furnished to do so, subject to the following conditions: |
j3 | 0:c770ad7363c8 | 25 | * |
j3 | 0:c770ad7363c8 | 26 | * The above copyright notice and this permission notice shall be included |
j3 | 0:c770ad7363c8 | 27 | * in all copies or substantial portions of the Software. |
j3 | 0:c770ad7363c8 | 28 | * |
j3 | 0:c770ad7363c8 | 29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 0:c770ad7363c8 | 30 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 0:c770ad7363c8 | 31 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 0:c770ad7363c8 | 32 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 0:c770ad7363c8 | 33 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 0:c770ad7363c8 | 34 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 0:c770ad7363c8 | 35 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 0:c770ad7363c8 | 36 | * |
j3 | 0:c770ad7363c8 | 37 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 0:c770ad7363c8 | 38 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 0:c770ad7363c8 | 39 | * Products, Inc. Branding Policy. |
j3 | 0:c770ad7363c8 | 40 | * |
j3 | 0:c770ad7363c8 | 41 | * The mere transfer of this software does not imply any licenses |
j3 | 0:c770ad7363c8 | 42 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 0:c770ad7363c8 | 43 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 0:c770ad7363c8 | 44 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 0:c770ad7363c8 | 45 | * ownership rights. |
j3 | 0:c770ad7363c8 | 46 | **********************************************************************/ |
j3 | 0:c770ad7363c8 | 47 | |
j3 | 0:c770ad7363c8 | 48 | |
j3 | 0:c770ad7363c8 | 49 | #include "max14661.h" |
j3 | 0:c770ad7363c8 | 50 | |
j3 | 0:c770ad7363c8 | 51 | |
j3 | 0:c770ad7363c8 | 52 | /******************************************************************//** |
j3 | 0:c770ad7363c8 | 53 | * Instantiates object and attaches MAX14661 to I2C buss |
j3 | 0:c770ad7363c8 | 54 | * |
j3 | 0:c770ad7363c8 | 55 | * On Entry: |
j3 | 0:c770ad7363c8 | 56 | * @param[in] p_i2c - pointer to I2C object for bus |
j3 | 0:c770ad7363c8 | 57 | * @param[in] i2c_adrs - 7-bit slave address of MAX14661 |
j3 | 0:c770ad7363c8 | 58 | * |
j3 | 0:c770ad7363c8 | 59 | * On Exit: |
j3 | 0:c770ad7363c8 | 60 | * @return none |
j3 | 0:c770ad7363c8 | 61 | * |
j3 | 0:c770ad7363c8 | 62 | * Example: |
j3 | 0:c770ad7363c8 | 63 | * @code |
j3 | 0:c770ad7363c8 | 64 | * |
j3 | 0:c770ad7363c8 | 65 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 66 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 67 | * |
j3 | 0:c770ad7363c8 | 68 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 69 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 70 | * |
j3 | 0:c770ad7363c8 | 71 | * @endcode |
j3 | 0:c770ad7363c8 | 72 | **********************************************************************/ |
j3 | 0:c770ad7363c8 | 73 | Max14661::Max14661(I2C* ptr_i2c_bus, max14661_i2c_adrs_t i2c_adrs) |
j3 | 0:c770ad7363c8 | 74 | { |
j3 | 0:c770ad7363c8 | 75 | p_i2c = ptr_i2c_bus; |
j3 | 0:c770ad7363c8 | 76 | w_adrs = (i2c_adrs << 1); |
j3 | 0:c770ad7363c8 | 77 | r_adrs = (w_adrs | 0x01); |
j3 | 0:c770ad7363c8 | 78 | } |
j3 | 0:c770ad7363c8 | 79 | |
j3 | 0:c770ad7363c8 | 80 | |
j3 | 0:c770ad7363c8 | 81 | /******************************************************************//** |
j3 | 0:c770ad7363c8 | 82 | * Writes given commands to CMD_A and CMD_B |
j3 | 0:c770ad7363c8 | 83 | * |
j3 | 0:c770ad7363c8 | 84 | * On Entry: |
j3 | 0:c770ad7363c8 | 85 | * @param[in] cmdA - command for CMD_A |
j3 | 0:c770ad7363c8 | 86 | * @param[in] cmdB - command for CMD_B |
j3 | 0:c770ad7363c8 | 87 | * |
j3 | 0:c770ad7363c8 | 88 | * On Exit: |
j3 | 0:c770ad7363c8 | 89 | * @return return value = 0 on success, non-0 on failure |
j3 | 0:c770ad7363c8 | 90 | * |
j3 | 0:c770ad7363c8 | 91 | * Example: |
j3 | 0:c770ad7363c8 | 92 | * @code |
j3 | 0:c770ad7363c8 | 93 | * |
j3 | 0:c770ad7363c8 | 94 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 95 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 96 | * |
j3 | 0:c770ad7363c8 | 97 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 98 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 99 | * |
j3 | 0:c770ad7363c8 | 100 | * uint16_t rtn_val; |
j3 | 0:c770ad7363c8 | 101 | * |
j3 | 0:c770ad7363c8 | 102 | * rtn_val = mux.wrt_cmd_registers(DISABLE_BANK, DISABLE_BANK); |
j3 | 0:c770ad7363c8 | 103 | * |
j3 | 0:c770ad7363c8 | 104 | * @endcode |
j3 | 0:c770ad7363c8 | 105 | **********************************************************************/ |
j3 | 0:c770ad7363c8 | 106 | uint16_t Max14661::wrt_cmd_registers(max14661_cmds_t cmdA, |
j3 | 0:c770ad7363c8 | 107 | max14661_cmds_t cmdB) |
j3 | 0:c770ad7363c8 | 108 | { |
j3 | 0:c770ad7363c8 | 109 | uint8_t data[3]; |
j3 | 0:c770ad7363c8 | 110 | uint8_t data_length = 0; |
j3 | 0:c770ad7363c8 | 111 | uint16_t rtn_val = 1; |
j3 | 0:c770ad7363c8 | 112 | |
j3 | 0:c770ad7363c8 | 113 | //build packet |
j3 | 0:c770ad7363c8 | 114 | data[data_length++] = CMD_A; |
j3 | 0:c770ad7363c8 | 115 | data[data_length++] = cmdA; |
j3 | 0:c770ad7363c8 | 116 | data[data_length++] = cmdB; |
j3 | 0:c770ad7363c8 | 117 | |
j3 | 0:c770ad7363c8 | 118 | rtn_val = p_i2c->write(w_adrs,(const char*) data, data_length); |
j3 | 0:c770ad7363c8 | 119 | |
j3 | 0:c770ad7363c8 | 120 | return(rtn_val); |
j3 | 0:c770ad7363c8 | 121 | } |
j3 | 0:c770ad7363c8 | 122 | |
j3 | 0:c770ad7363c8 | 123 | |
j3 | 0:c770ad7363c8 | 124 | /******************************************************************//** |
j3 | 0:c770ad7363c8 | 125 | * Writes data pointed at by 'data' to shadow registers |
j3 | 0:c770ad7363c8 | 126 | * |
j3 | 0:c770ad7363c8 | 127 | * On Entry: |
j3 | 0:c770ad7363c8 | 128 | * @param[in] data - pointer to data |
j3 | 0:c770ad7363c8 | 129 | * |
j3 | 0:c770ad7363c8 | 130 | * On Exit: |
j3 | 0:c770ad7363c8 | 131 | * @return return value = 0 on success, non-0 on failure |
j3 | 0:c770ad7363c8 | 132 | * |
j3 | 0:c770ad7363c8 | 133 | * Example: |
j3 | 0:c770ad7363c8 | 134 | * @code |
j3 | 0:c770ad7363c8 | 135 | * |
j3 | 0:c770ad7363c8 | 136 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 137 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 138 | * |
j3 | 0:c770ad7363c8 | 139 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 140 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 141 | * |
j3 | 0:c770ad7363c8 | 142 | * uint8_t data[] = {1, 2, 3, 4}; |
j3 | 0:c770ad7363c8 | 143 | * uint16_t rtn_val; |
j3 | 0:c770ad7363c8 | 144 | * |
j3 | 0:c770ad7363c8 | 145 | * //wite shadow registers |
j3 | 0:c770ad7363c8 | 146 | * rtn_val = mux.wrt_shadow_registers(data); |
j3 | 0:c770ad7363c8 | 147 | * |
j3 | 0:c770ad7363c8 | 148 | * @endcode |
j3 | 0:c770ad7363c8 | 149 | **********************************************************************/ |
j3 | 0:c770ad7363c8 | 150 | uint16_t Max14661::wrt_shadow_registers(uint8_t* data) |
j3 | 0:c770ad7363c8 | 151 | { |
j3 | 0:c770ad7363c8 | 152 | uint8_t local_data[5]; |
j3 | 0:c770ad7363c8 | 153 | uint8_t data_length = 0; |
j3 | 0:c770ad7363c8 | 154 | uint16_t rtn_val = 1; |
j3 | 0:c770ad7363c8 | 155 | |
j3 | 0:c770ad7363c8 | 156 | local_data[data_length++] = SHDW0; |
j3 | 0:c770ad7363c8 | 157 | |
j3 | 0:c770ad7363c8 | 158 | for(; data_length < 5; data_length++) |
j3 | 0:c770ad7363c8 | 159 | { |
j3 | 0:c770ad7363c8 | 160 | local_data[data_length] = data[data_length-1]; |
j3 | 0:c770ad7363c8 | 161 | } |
j3 | 0:c770ad7363c8 | 162 | |
j3 | 0:c770ad7363c8 | 163 | rtn_val = p_i2c->write(w_adrs,(const char*) local_data, data_length); |
j3 | 0:c770ad7363c8 | 164 | |
j3 | 0:c770ad7363c8 | 165 | return(rtn_val); |
j3 | 0:c770ad7363c8 | 166 | } |
j3 | 0:c770ad7363c8 | 167 | |
j3 | 0:c770ad7363c8 | 168 | |
j3 | 0:c770ad7363c8 | 169 | /******************************************************************//** |
j3 | 0:c770ad7363c8 | 170 | * Writes data pointed at by 'data' to direct access registers |
j3 | 0:c770ad7363c8 | 171 | * |
j3 | 0:c770ad7363c8 | 172 | * On Entry: |
j3 | 0:c770ad7363c8 | 173 | * @param[in] data - pointer to data to be written |
j3 | 0:c770ad7363c8 | 174 | * |
j3 | 0:c770ad7363c8 | 175 | * On Exit: |
j3 | 0:c770ad7363c8 | 176 | * @return return value = 0 on success, non-0 on failure |
j3 | 0:c770ad7363c8 | 177 | * |
j3 | 0:c770ad7363c8 | 178 | * Example: |
j3 | 0:c770ad7363c8 | 179 | * @code |
j3 | 0:c770ad7363c8 | 180 | * |
j3 | 0:c770ad7363c8 | 181 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 182 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 183 | * |
j3 | 0:c770ad7363c8 | 184 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 185 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 186 | * |
j3 | 0:c770ad7363c8 | 187 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 188 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 189 | * |
j3 | 0:c770ad7363c8 | 190 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 191 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 192 | * |
j3 | 0:c770ad7363c8 | 193 | * uint8_t data[] = {1, 2, 3, 4}; |
j3 | 0:c770ad7363c8 | 194 | * uint16_t rtn_val; |
j3 | 0:c770ad7363c8 | 195 | * |
j3 | 0:c770ad7363c8 | 196 | * //wite shadow registers |
j3 | 0:c770ad7363c8 | 197 | * rtn_val = mux.wrt_shadow_registers(data); |
j3 | 0:c770ad7363c8 | 198 | * |
j3 | 0:c770ad7363c8 | 199 | * @endcode |
j3 | 0:c770ad7363c8 | 200 | **********************************************************************/ |
j3 | 0:c770ad7363c8 | 201 | uint16_t Max14661::wrt_dir_registers(uint8_t* data) |
j3 | 0:c770ad7363c8 | 202 | { |
j3 | 0:c770ad7363c8 | 203 | uint8_t local_data[5]; |
j3 | 0:c770ad7363c8 | 204 | uint8_t data_length = 0; |
j3 | 0:c770ad7363c8 | 205 | uint16_t rtn_val = 1; |
j3 | 0:c770ad7363c8 | 206 | |
j3 | 0:c770ad7363c8 | 207 | local_data[data_length++] = DIR0; |
j3 | 0:c770ad7363c8 | 208 | |
j3 | 0:c770ad7363c8 | 209 | for(; data_length < 5; data_length++) |
j3 | 0:c770ad7363c8 | 210 | { |
j3 | 0:c770ad7363c8 | 211 | local_data[data_length] = data[data_length-1]; |
j3 | 0:c770ad7363c8 | 212 | } |
j3 | 0:c770ad7363c8 | 213 | |
j3 | 0:c770ad7363c8 | 214 | rtn_val = p_i2c->write(w_adrs,(const char*) local_data, data_length); |
j3 | 0:c770ad7363c8 | 215 | |
j3 | 0:c770ad7363c8 | 216 | return(rtn_val); |
j3 | 0:c770ad7363c8 | 217 | } |
j3 | 0:c770ad7363c8 | 218 | |
j3 | 0:c770ad7363c8 | 219 | |
j3 | 0:c770ad7363c8 | 220 | /**********************************************************//** |
j3 | 0:c770ad7363c8 | 221 | * Reads data from direct access registers starting at DIR0 and |
j3 | 0:c770ad7363c8 | 222 | * stores it in byte array pointed at by 'data' |
j3 | 0:c770ad7363c8 | 223 | * |
j3 | 0:c770ad7363c8 | 224 | * On Entry: |
j3 | 0:c770ad7363c8 | 225 | * @param[in] data - pointer to byte array for storing data |
j3 | 0:c770ad7363c8 | 226 | * |
j3 | 0:c770ad7363c8 | 227 | * On Exit: |
j3 | 0:c770ad7363c8 | 228 | * @param[out] data - data buffer now contains data read |
j3 | 0:c770ad7363c8 | 229 | * from dir registers |
j3 | 0:c770ad7363c8 | 230 | * @return return value = 0 on success, non-0 on failure |
j3 | 0:c770ad7363c8 | 231 | * |
j3 | 0:c770ad7363c8 | 232 | * Example: |
j3 | 0:c770ad7363c8 | 233 | * @code |
j3 | 0:c770ad7363c8 | 234 | * |
j3 | 0:c770ad7363c8 | 235 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 236 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 237 | * |
j3 | 0:c770ad7363c8 | 238 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 239 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 240 | * |
j3 | 0:c770ad7363c8 | 241 | * uint16_t rtn_val; |
j3 | 0:c770ad7363c8 | 242 | * uint8_t data[4]; |
j3 | 0:c770ad7363c8 | 243 | * |
j3 | 0:c770ad7363c8 | 244 | * //read direct access registers |
j3 | 0:c770ad7363c8 | 245 | * rtn_val = mux.rd_dir_registers(data); |
j3 | 0:c770ad7363c8 | 246 | * |
j3 | 0:c770ad7363c8 | 247 | * @endcode |
j3 | 0:c770ad7363c8 | 248 | **********************************************************************/ |
j3 | 0:c770ad7363c8 | 249 | uint16_t Max14661::rd_dir_registers(uint8_t* data) |
j3 | 0:c770ad7363c8 | 250 | { |
j3 | 0:c770ad7363c8 | 251 | uint16_t rtn_val = 1; |
j3 | 0:c770ad7363c8 | 252 | uint8_t local_data = DIR0; |
j3 | 0:c770ad7363c8 | 253 | |
j3 | 0:c770ad7363c8 | 254 | rtn_val = p_i2c->write(w_adrs,(const char*) local_data, 1); |
j3 | 0:c770ad7363c8 | 255 | |
j3 | 0:c770ad7363c8 | 256 | if(!rtn_val) |
j3 | 0:c770ad7363c8 | 257 | { |
j3 | 0:c770ad7363c8 | 258 | rtn_val = p_i2c->read(r_adrs,(char*) data, 4); |
j3 | 0:c770ad7363c8 | 259 | } |
j3 | 0:c770ad7363c8 | 260 | |
j3 | 0:c770ad7363c8 | 261 | return(rtn_val); |
j3 | 0:c770ad7363c8 | 262 | } |
j3 | 0:c770ad7363c8 | 263 | |
j3 | 0:c770ad7363c8 | 264 | |
j3 | 0:c770ad7363c8 | 265 | /**********************************************************//** |
j3 | 0:c770ad7363c8 | 266 | * Reads data from shadow registers starting at SHDW0 and stores |
j3 | 0:c770ad7363c8 | 267 | * it in byte array pointed at by 'data' |
j3 | 0:c770ad7363c8 | 268 | * |
j3 | 0:c770ad7363c8 | 269 | * On Entry: |
j3 | 0:c770ad7363c8 | 270 | * @param[in] data - pointer to byte array for storing data |
j3 | 0:c770ad7363c8 | 271 | * |
j3 | 0:c770ad7363c8 | 272 | * On Exit: |
j3 | 0:c770ad7363c8 | 273 | * @param[out] data - data buffer now contains data read |
j3 | 0:c770ad7363c8 | 274 | * from shadow registers |
j3 | 0:c770ad7363c8 | 275 | * @return return value = 0 on success, non-0 on failure |
j3 | 0:c770ad7363c8 | 276 | * |
j3 | 0:c770ad7363c8 | 277 | * Example: |
j3 | 0:c770ad7363c8 | 278 | * @code |
j3 | 0:c770ad7363c8 | 279 | * |
j3 | 0:c770ad7363c8 | 280 | * I2C i2c_bus(D14, D15); //instantiate I2C bus |
j3 | 0:c770ad7363c8 | 281 | * I2C * p_i2c_bus = &i2c_bus; //create pointer to bus |
j3 | 0:c770ad7363c8 | 282 | * |
j3 | 0:c770ad7363c8 | 283 | * //instantiate mux object |
j3 | 0:c770ad7363c8 | 284 | * Max14661 mux(p_i2c_bus, MAX14661_I2C_ADRS0); |
j3 | 0:c770ad7363c8 | 285 | * |
j3 | 0:c770ad7363c8 | 286 | * uint16_t rtn_val; |
j3 | 0:c770ad7363c8 | 287 | * uint8_t data[4]; |
j3 | 0:c770ad7363c8 | 288 | * |
j3 | 0:c770ad7363c8 | 289 | * //read shadow registers |
j3 | 0:c770ad7363c8 | 290 | * rtn_val = mux.rd_shadow_registers(data); |
j3 | 0:c770ad7363c8 | 291 | * |
j3 | 0:c770ad7363c8 | 292 | * @endcode |
j3 | 0:c770ad7363c8 | 293 | **************************************************************/ |
j3 | 0:c770ad7363c8 | 294 | uint16_t Max14661::rd_shadow_registers(uint8_t* data) |
j3 | 0:c770ad7363c8 | 295 | { |
j3 | 0:c770ad7363c8 | 296 | uint16_t rtn_val = 1; |
j3 | 0:c770ad7363c8 | 297 | uint8_t local_data = SHDW0; |
j3 | 0:c770ad7363c8 | 298 | |
j3 | 0:c770ad7363c8 | 299 | rtn_val = p_i2c->write(w_adrs,(const char*) local_data, 1); |
j3 | 0:c770ad7363c8 | 300 | |
j3 | 0:c770ad7363c8 | 301 | if(!rtn_val) |
j3 | 0:c770ad7363c8 | 302 | { |
j3 | 0:c770ad7363c8 | 303 | rtn_val = p_i2c->read(r_adrs,(char*) data, 4); |
j3 | 0:c770ad7363c8 | 304 | } |
j3 | 0:c770ad7363c8 | 305 | |
j3 | 0:c770ad7363c8 | 306 | return(rtn_val); |
j3 | 0:c770ad7363c8 | 307 | } |