LTC681x
LTC681x.cpp@0:c1ea93720ab4, 2017-11-12 (annotated)
- Committer:
- roger5641
- Date:
- Sun Nov 12 01:21:42 2017 +0000
- Revision:
- 0:c1ea93720ab4
ver1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
roger5641 | 0:c1ea93720ab4 | 1 | /*! |
roger5641 | 0:c1ea93720ab4 | 2 | General BMS Library |
roger5641 | 0:c1ea93720ab4 | 3 | @verbatim |
roger5641 | 0:c1ea93720ab4 | 4 | |
roger5641 | 0:c1ea93720ab4 | 5 | @endverbatim |
roger5641 | 0:c1ea93720ab4 | 6 | REVISION HISTORY |
roger5641 | 0:c1ea93720ab4 | 7 | $Revision: 7139 $ |
roger5641 | 0:c1ea93720ab4 | 8 | $Date: 2017-4 |
roger5641 | 0:c1ea93720ab4 | 9 | |
roger5641 | 0:c1ea93720ab4 | 10 | Copyright (c) 2017, Linear Technology Corp.(LTC) |
roger5641 | 0:c1ea93720ab4 | 11 | All rights reserved. |
roger5641 | 0:c1ea93720ab4 | 12 | |
roger5641 | 0:c1ea93720ab4 | 13 | Redistribution and use in source and binary forms, with or without |
roger5641 | 0:c1ea93720ab4 | 14 | modification, are permitted provided that the following conditions are met: |
roger5641 | 0:c1ea93720ab4 | 15 | |
roger5641 | 0:c1ea93720ab4 | 16 | 1. Redistributions of source code must retain the above copyright notice, this |
roger5641 | 0:c1ea93720ab4 | 17 | list of conditions and the following disclaimer. |
roger5641 | 0:c1ea93720ab4 | 18 | 2. Redistributions in binary form must reproduce the above copyright notice, |
roger5641 | 0:c1ea93720ab4 | 19 | this list of conditions and the following disclaimer in the documentation |
roger5641 | 0:c1ea93720ab4 | 20 | and/or other materials provided with the distribution. |
roger5641 | 0:c1ea93720ab4 | 21 | |
roger5641 | 0:c1ea93720ab4 | 22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
roger5641 | 0:c1ea93720ab4 | 23 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
roger5641 | 0:c1ea93720ab4 | 24 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
roger5641 | 0:c1ea93720ab4 | 25 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
roger5641 | 0:c1ea93720ab4 | 26 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
roger5641 | 0:c1ea93720ab4 | 27 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
roger5641 | 0:c1ea93720ab4 | 28 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
roger5641 | 0:c1ea93720ab4 | 29 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
roger5641 | 0:c1ea93720ab4 | 30 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
roger5641 | 0:c1ea93720ab4 | 31 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
roger5641 | 0:c1ea93720ab4 | 32 | |
roger5641 | 0:c1ea93720ab4 | 33 | The views and conclusions contained in the software and documentation are those |
roger5641 | 0:c1ea93720ab4 | 34 | of the authors and should not be interpreted as representing official policies, |
roger5641 | 0:c1ea93720ab4 | 35 | either expressed or implied, of Linear Technology Corp. |
roger5641 | 0:c1ea93720ab4 | 36 | |
roger5641 | 0:c1ea93720ab4 | 37 | The Linear Technology Linduino is not affiliated with the official Arduino team. |
roger5641 | 0:c1ea93720ab4 | 38 | However, the Linduino is only possible because of the Arduino team's commitment |
roger5641 | 0:c1ea93720ab4 | 39 | to the open-source community. Please, visit http://www.arduino.cc and |
roger5641 | 0:c1ea93720ab4 | 40 | http://store.arduino.cc , and consider a purchase that will help fund their |
roger5641 | 0:c1ea93720ab4 | 41 | ongoing work. |
roger5641 | 0:c1ea93720ab4 | 42 | |
roger5641 | 0:c1ea93720ab4 | 43 | Copyright 2017 Linear Technology Corp. (LTC) |
roger5641 | 0:c1ea93720ab4 | 44 | ***********************************************************/ |
roger5641 | 0:c1ea93720ab4 | 45 | #include "LTC681x.h" |
roger5641 | 0:c1ea93720ab4 | 46 | |
roger5641 | 0:c1ea93720ab4 | 47 | void wakeup_idle(uint8_t total_ic) |
roger5641 | 0:c1ea93720ab4 | 48 | { |
roger5641 | 0:c1ea93720ab4 | 49 | for (int i =0; i<total_ic; i++) |
roger5641 | 0:c1ea93720ab4 | 50 | { |
roger5641 | 0:c1ea93720ab4 | 51 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 52 | //delayMicroseconds(2); //Guarantees the isoSPI will be in ready mode |
roger5641 | 0:c1ea93720ab4 | 53 | spi_read_byte(0xff); |
roger5641 | 0:c1ea93720ab4 | 54 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 55 | } |
roger5641 | 0:c1ea93720ab4 | 56 | } |
roger5641 | 0:c1ea93720ab4 | 57 | |
roger5641 | 0:c1ea93720ab4 | 58 | //Generic wakeup commannd to wake the LTC6813 from sleep |
roger5641 | 0:c1ea93720ab4 | 59 | void wakeup_sleep(uint8_t total_ic) |
roger5641 | 0:c1ea93720ab4 | 60 | { |
roger5641 | 0:c1ea93720ab4 | 61 | for (int i =0; i<total_ic; i++) |
roger5641 | 0:c1ea93720ab4 | 62 | { |
roger5641 | 0:c1ea93720ab4 | 63 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 64 | wait_ms(300); // Guarantees the LTC6813 will be in standby |
roger5641 | 0:c1ea93720ab4 | 65 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 66 | wait_ms(10); |
roger5641 | 0:c1ea93720ab4 | 67 | } |
roger5641 | 0:c1ea93720ab4 | 68 | } |
roger5641 | 0:c1ea93720ab4 | 69 | |
roger5641 | 0:c1ea93720ab4 | 70 | //Generic function to write 68xx commands. Function calculated PEC for tx_cmd data |
roger5641 | 0:c1ea93720ab4 | 71 | void cmd_68(uint8_t tx_cmd[2]) |
roger5641 | 0:c1ea93720ab4 | 72 | { |
roger5641 | 0:c1ea93720ab4 | 73 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 74 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 75 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 76 | |
roger5641 | 0:c1ea93720ab4 | 77 | cmd[0] = tx_cmd[0]; |
roger5641 | 0:c1ea93720ab4 | 78 | cmd[1] = tx_cmd[1]; |
roger5641 | 0:c1ea93720ab4 | 79 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 80 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 81 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 82 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 83 | spi_write_array(4,cmd); |
roger5641 | 0:c1ea93720ab4 | 84 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 85 | } |
roger5641 | 0:c1ea93720ab4 | 86 | |
roger5641 | 0:c1ea93720ab4 | 87 | //Generic function to write 68xx commands and write payload data. Function calculated PEC for tx_cmd data |
roger5641 | 0:c1ea93720ab4 | 88 | void write_68(uint8_t total_ic , uint8_t tx_cmd[2], uint8_t data[]) |
roger5641 | 0:c1ea93720ab4 | 89 | { |
roger5641 | 0:c1ea93720ab4 | 90 | const uint8_t BYTES_IN_REG = 6; |
roger5641 | 0:c1ea93720ab4 | 91 | const uint8_t CMD_LEN = 4+(8*total_ic); |
roger5641 | 0:c1ea93720ab4 | 92 | uint8_t *cmd; |
roger5641 | 0:c1ea93720ab4 | 93 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 94 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 95 | uint8_t cmd_index; |
roger5641 | 0:c1ea93720ab4 | 96 | |
roger5641 | 0:c1ea93720ab4 | 97 | cmd = (uint8_t *)malloc(CMD_LEN*sizeof(uint8_t)); |
roger5641 | 0:c1ea93720ab4 | 98 | cmd[0] = tx_cmd[0]; |
roger5641 | 0:c1ea93720ab4 | 99 | cmd[1] = tx_cmd[1]; |
roger5641 | 0:c1ea93720ab4 | 100 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 101 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 102 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 103 | cmd_index = 4; |
roger5641 | 0:c1ea93720ab4 | 104 | for (uint8_t current_ic = total_ic; current_ic > 0; current_ic--) // executes for each LTC681x in daisy chain, this loops starts with |
roger5641 | 0:c1ea93720ab4 | 105 | { |
roger5641 | 0:c1ea93720ab4 | 106 | // the last IC on the stack. The first configuration written is |
roger5641 | 0:c1ea93720ab4 | 107 | // received by the last IC in the daisy chain |
roger5641 | 0:c1ea93720ab4 | 108 | |
roger5641 | 0:c1ea93720ab4 | 109 | for (uint8_t current_byte = 0; current_byte < BYTES_IN_REG; current_byte++) |
roger5641 | 0:c1ea93720ab4 | 110 | { |
roger5641 | 0:c1ea93720ab4 | 111 | cmd[cmd_index] = data[((current_ic-1)*6)+current_byte]; |
roger5641 | 0:c1ea93720ab4 | 112 | cmd_index = cmd_index + 1; |
roger5641 | 0:c1ea93720ab4 | 113 | } |
roger5641 | 0:c1ea93720ab4 | 114 | |
roger5641 | 0:c1ea93720ab4 | 115 | data_pec = (uint16_t)pec15_calc(BYTES_IN_REG, &data[(current_ic-1)*6]); // calculating the PEC for each Iss configuration register data |
roger5641 | 0:c1ea93720ab4 | 116 | cmd[cmd_index] = (uint8_t)(data_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 117 | cmd[cmd_index + 1] = (uint8_t)data_pec; |
roger5641 | 0:c1ea93720ab4 | 118 | cmd_index = cmd_index + 2; |
roger5641 | 0:c1ea93720ab4 | 119 | } |
roger5641 | 0:c1ea93720ab4 | 120 | |
roger5641 | 0:c1ea93720ab4 | 121 | |
roger5641 | 0:c1ea93720ab4 | 122 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 123 | spi_write_array(CMD_LEN, cmd); |
roger5641 | 0:c1ea93720ab4 | 124 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 125 | free(cmd); |
roger5641 | 0:c1ea93720ab4 | 126 | } |
roger5641 | 0:c1ea93720ab4 | 127 | |
roger5641 | 0:c1ea93720ab4 | 128 | //Generic function to write 68xx commands and read data. Function calculated PEC for tx_cmd data |
roger5641 | 0:c1ea93720ab4 | 129 | int8_t read_68( uint8_t total_ic, uint8_t tx_cmd[2], uint8_t *rx_data) |
roger5641 | 0:c1ea93720ab4 | 130 | { |
roger5641 | 0:c1ea93720ab4 | 131 | const uint8_t BYTES_IN_REG = 8; |
roger5641 | 0:c1ea93720ab4 | 132 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 133 | uint8_t data[256]; |
roger5641 | 0:c1ea93720ab4 | 134 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 135 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 136 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 137 | uint16_t received_pec; |
roger5641 | 0:c1ea93720ab4 | 138 | |
roger5641 | 0:c1ea93720ab4 | 139 | // data = (uint8_t *) malloc((8*total_ic)*sizeof(uint8_t)); // This is a problem because it can fail |
roger5641 | 0:c1ea93720ab4 | 140 | |
roger5641 | 0:c1ea93720ab4 | 141 | cmd[0] = tx_cmd[0]; |
roger5641 | 0:c1ea93720ab4 | 142 | cmd[1] = tx_cmd[1]; |
roger5641 | 0:c1ea93720ab4 | 143 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 144 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 145 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 146 | |
roger5641 | 0:c1ea93720ab4 | 147 | |
roger5641 | 0:c1ea93720ab4 | 148 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 149 | spi_write_read(cmd, 4, data, (BYTES_IN_REG*total_ic)); //Read the configuration data of all ICs on the daisy chain into |
roger5641 | 0:c1ea93720ab4 | 150 | CS_PIN = 1; //rx_data[] array |
roger5641 | 0:c1ea93720ab4 | 151 | |
roger5641 | 0:c1ea93720ab4 | 152 | for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++) //executes for each LTC681x in the daisy chain and packs the data |
roger5641 | 0:c1ea93720ab4 | 153 | { |
roger5641 | 0:c1ea93720ab4 | 154 | //into the r_comm array as well as check the received Config data |
roger5641 | 0:c1ea93720ab4 | 155 | //for any bit errors |
roger5641 | 0:c1ea93720ab4 | 156 | for (uint8_t current_byte = 0; current_byte < BYTES_IN_REG; current_byte++) |
roger5641 | 0:c1ea93720ab4 | 157 | { |
roger5641 | 0:c1ea93720ab4 | 158 | rx_data[(current_ic*8)+current_byte] = data[current_byte + (current_ic*BYTES_IN_REG)]; |
roger5641 | 0:c1ea93720ab4 | 159 | } |
roger5641 | 0:c1ea93720ab4 | 160 | received_pec = (rx_data[(current_ic*8)+6]<<8) + rx_data[(current_ic*8)+7]; |
roger5641 | 0:c1ea93720ab4 | 161 | data_pec = pec15_calc(6, &rx_data[current_ic*8]); |
roger5641 | 0:c1ea93720ab4 | 162 | if (received_pec != data_pec) |
roger5641 | 0:c1ea93720ab4 | 163 | { |
roger5641 | 0:c1ea93720ab4 | 164 | pec_error = -1; |
roger5641 | 0:c1ea93720ab4 | 165 | } |
roger5641 | 0:c1ea93720ab4 | 166 | } |
roger5641 | 0:c1ea93720ab4 | 167 | |
roger5641 | 0:c1ea93720ab4 | 168 | |
roger5641 | 0:c1ea93720ab4 | 169 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 170 | } |
roger5641 | 0:c1ea93720ab4 | 171 | |
roger5641 | 0:c1ea93720ab4 | 172 | |
roger5641 | 0:c1ea93720ab4 | 173 | /* |
roger5641 | 0:c1ea93720ab4 | 174 | Calculates and returns the CRC15 |
roger5641 | 0:c1ea93720ab4 | 175 | */ |
roger5641 | 0:c1ea93720ab4 | 176 | uint16_t pec15_calc(uint8_t len, //Number of bytes that will be used to calculate a PEC |
roger5641 | 0:c1ea93720ab4 | 177 | uint8_t *data //Array of data that will be used to calculate a PEC |
roger5641 | 0:c1ea93720ab4 | 178 | ) |
roger5641 | 0:c1ea93720ab4 | 179 | { |
roger5641 | 0:c1ea93720ab4 | 180 | uint16_t remainder,addr; |
roger5641 | 0:c1ea93720ab4 | 181 | |
roger5641 | 0:c1ea93720ab4 | 182 | remainder = 16;//initialize the PEC |
roger5641 | 0:c1ea93720ab4 | 183 | for (uint8_t i = 0; i<len; i++) // loops for each byte in data array |
roger5641 | 0:c1ea93720ab4 | 184 | { |
roger5641 | 0:c1ea93720ab4 | 185 | addr = ((remainder>>7)^data[i])&0xff;//calculate PEC table address |
roger5641 | 0:c1ea93720ab4 | 186 | |
roger5641 | 0:c1ea93720ab4 | 187 | remainder = (remainder<<8)^crc15Table[addr]; |
roger5641 | 0:c1ea93720ab4 | 188 | } |
roger5641 | 0:c1ea93720ab4 | 189 | return(remainder*2);//The CRC15 has a 0 in the LSB so the remainder must be multiplied by 2 |
roger5641 | 0:c1ea93720ab4 | 190 | } |
roger5641 | 0:c1ea93720ab4 | 191 | |
roger5641 | 0:c1ea93720ab4 | 192 | //Starts cell voltage conversion |
roger5641 | 0:c1ea93720ab4 | 193 | void LTC681x_adcv( |
roger5641 | 0:c1ea93720ab4 | 194 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 195 | uint8_t DCP, //Discharge Permit |
roger5641 | 0:c1ea93720ab4 | 196 | uint8_t CH //Cell Channels to be measured |
roger5641 | 0:c1ea93720ab4 | 197 | ) |
roger5641 | 0:c1ea93720ab4 | 198 | { |
roger5641 | 0:c1ea93720ab4 | 199 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 200 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 201 | |
roger5641 | 0:c1ea93720ab4 | 202 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 203 | cmd[0] = md_bits + 0x02; |
roger5641 | 0:c1ea93720ab4 | 204 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 205 | cmd[1] = md_bits + 0x60 + (DCP<<4) + CH; |
roger5641 | 0:c1ea93720ab4 | 206 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 207 | } |
roger5641 | 0:c1ea93720ab4 | 208 | |
roger5641 | 0:c1ea93720ab4 | 209 | |
roger5641 | 0:c1ea93720ab4 | 210 | //Starts cell voltage and SOC conversion |
roger5641 | 0:c1ea93720ab4 | 211 | void LTC681x_adcvsc( |
roger5641 | 0:c1ea93720ab4 | 212 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 213 | uint8_t DCP //Discharge Permit |
roger5641 | 0:c1ea93720ab4 | 214 | ) |
roger5641 | 0:c1ea93720ab4 | 215 | { |
roger5641 | 0:c1ea93720ab4 | 216 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 217 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 218 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 219 | cmd[0] = md_bits | 0x04; |
roger5641 | 0:c1ea93720ab4 | 220 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 221 | cmd[1] = md_bits | 0x60 | (DCP<<4) | 0x07; |
roger5641 | 0:c1ea93720ab4 | 222 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 223 | |
roger5641 | 0:c1ea93720ab4 | 224 | } |
roger5641 | 0:c1ea93720ab4 | 225 | |
roger5641 | 0:c1ea93720ab4 | 226 | // Starts cell voltage and GPIO 1&2 conversion |
roger5641 | 0:c1ea93720ab4 | 227 | void LTC681x_adcvax( |
roger5641 | 0:c1ea93720ab4 | 228 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 229 | uint8_t DCP //Discharge Permit |
roger5641 | 0:c1ea93720ab4 | 230 | ) |
roger5641 | 0:c1ea93720ab4 | 231 | { |
roger5641 | 0:c1ea93720ab4 | 232 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 233 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 234 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 235 | cmd[0] = md_bits | 0x04; |
roger5641 | 0:c1ea93720ab4 | 236 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 237 | cmd[1] = md_bits | ((DCP&0x01)<<4) + 0x6F; |
roger5641 | 0:c1ea93720ab4 | 238 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 239 | } |
roger5641 | 0:c1ea93720ab4 | 240 | |
roger5641 | 0:c1ea93720ab4 | 241 | //Starts cell voltage overlap conversion |
roger5641 | 0:c1ea93720ab4 | 242 | void LTC681x_adol( |
roger5641 | 0:c1ea93720ab4 | 243 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 244 | uint8_t DCP //Discharge Permit |
roger5641 | 0:c1ea93720ab4 | 245 | ) |
roger5641 | 0:c1ea93720ab4 | 246 | { |
roger5641 | 0:c1ea93720ab4 | 247 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 248 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 249 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 250 | cmd[0] = md_bits + 0x02; |
roger5641 | 0:c1ea93720ab4 | 251 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 252 | cmd[1] = md_bits + (DCP<<4) +0x01; |
roger5641 | 0:c1ea93720ab4 | 253 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 254 | } |
roger5641 | 0:c1ea93720ab4 | 255 | |
roger5641 | 0:c1ea93720ab4 | 256 | //Starts cell voltage self test conversion |
roger5641 | 0:c1ea93720ab4 | 257 | void LTC681x_cvst( |
roger5641 | 0:c1ea93720ab4 | 258 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 259 | uint8_t ST //Self Test |
roger5641 | 0:c1ea93720ab4 | 260 | ) |
roger5641 | 0:c1ea93720ab4 | 261 | { |
roger5641 | 0:c1ea93720ab4 | 262 | uint8_t cmd[2]; |
roger5641 | 0:c1ea93720ab4 | 263 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 264 | |
roger5641 | 0:c1ea93720ab4 | 265 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 266 | cmd[0] = md_bits + 0x02; |
roger5641 | 0:c1ea93720ab4 | 267 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 268 | cmd[1] = md_bits + ((ST)<<5) +0x07; |
roger5641 | 0:c1ea93720ab4 | 269 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 270 | |
roger5641 | 0:c1ea93720ab4 | 271 | } |
roger5641 | 0:c1ea93720ab4 | 272 | |
roger5641 | 0:c1ea93720ab4 | 273 | //Start an Auxiliary Register Self Test Conversion |
roger5641 | 0:c1ea93720ab4 | 274 | void LTC681x_axst( |
roger5641 | 0:c1ea93720ab4 | 275 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 276 | uint8_t ST //Self Test |
roger5641 | 0:c1ea93720ab4 | 277 | ) |
roger5641 | 0:c1ea93720ab4 | 278 | { |
roger5641 | 0:c1ea93720ab4 | 279 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 280 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 281 | |
roger5641 | 0:c1ea93720ab4 | 282 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 283 | cmd[0] = md_bits + 0x04; |
roger5641 | 0:c1ea93720ab4 | 284 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 285 | cmd[1] = md_bits + ((ST&0x03)<<5) +0x07; |
roger5641 | 0:c1ea93720ab4 | 286 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 287 | |
roger5641 | 0:c1ea93720ab4 | 288 | } |
roger5641 | 0:c1ea93720ab4 | 289 | |
roger5641 | 0:c1ea93720ab4 | 290 | //Start a Status Register Self Test Conversion |
roger5641 | 0:c1ea93720ab4 | 291 | void LTC681x_statst( |
roger5641 | 0:c1ea93720ab4 | 292 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 293 | uint8_t ST //Self Test |
roger5641 | 0:c1ea93720ab4 | 294 | ) |
roger5641 | 0:c1ea93720ab4 | 295 | { |
roger5641 | 0:c1ea93720ab4 | 296 | uint8_t cmd[2]; |
roger5641 | 0:c1ea93720ab4 | 297 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 298 | |
roger5641 | 0:c1ea93720ab4 | 299 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 300 | cmd[0] = md_bits + 0x04; |
roger5641 | 0:c1ea93720ab4 | 301 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 302 | cmd[1] = md_bits + ((ST&0x03)<<5) +0x0F; |
roger5641 | 0:c1ea93720ab4 | 303 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 304 | |
roger5641 | 0:c1ea93720ab4 | 305 | } |
roger5641 | 0:c1ea93720ab4 | 306 | |
roger5641 | 0:c1ea93720ab4 | 307 | //Sends the poll adc command |
roger5641 | 0:c1ea93720ab4 | 308 | uint8_t LTC681x_pladc() |
roger5641 | 0:c1ea93720ab4 | 309 | { |
roger5641 | 0:c1ea93720ab4 | 310 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 311 | uint8_t adc_state = 0xFF; |
roger5641 | 0:c1ea93720ab4 | 312 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 313 | |
roger5641 | 0:c1ea93720ab4 | 314 | cmd[0] = 0x07; |
roger5641 | 0:c1ea93720ab4 | 315 | cmd[1] = 0x14; |
roger5641 | 0:c1ea93720ab4 | 316 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 317 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 318 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 319 | |
roger5641 | 0:c1ea93720ab4 | 320 | |
roger5641 | 0:c1ea93720ab4 | 321 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 322 | spi_write_array(4,cmd); |
roger5641 | 0:c1ea93720ab4 | 323 | // adc_state = spi_read_byte(0xFF); |
roger5641 | 0:c1ea93720ab4 | 324 | |
roger5641 | 0:c1ea93720ab4 | 325 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 326 | return(adc_state); |
roger5641 | 0:c1ea93720ab4 | 327 | } |
roger5641 | 0:c1ea93720ab4 | 328 | |
roger5641 | 0:c1ea93720ab4 | 329 | //This function will block operation until the ADC has finished it's conversion |
roger5641 | 0:c1ea93720ab4 | 330 | uint32_t LTC681x_pollAdc() |
roger5641 | 0:c1ea93720ab4 | 331 | { |
roger5641 | 0:c1ea93720ab4 | 332 | uint32_t counter = 0; |
roger5641 | 0:c1ea93720ab4 | 333 | uint8_t finished = 0; |
roger5641 | 0:c1ea93720ab4 | 334 | uint8_t current_time = 0; |
roger5641 | 0:c1ea93720ab4 | 335 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 336 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 337 | |
roger5641 | 0:c1ea93720ab4 | 338 | |
roger5641 | 0:c1ea93720ab4 | 339 | cmd[0] = 0x07; |
roger5641 | 0:c1ea93720ab4 | 340 | cmd[1] = 0x14; |
roger5641 | 0:c1ea93720ab4 | 341 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 342 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 343 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 344 | |
roger5641 | 0:c1ea93720ab4 | 345 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 346 | spi_write_array(4,cmd); |
roger5641 | 0:c1ea93720ab4 | 347 | |
roger5641 | 0:c1ea93720ab4 | 348 | while ((counter<200000)&&(finished == 0)) |
roger5641 | 0:c1ea93720ab4 | 349 | { |
roger5641 | 0:c1ea93720ab4 | 350 | current_time = spi_read_byte(0xff); |
roger5641 | 0:c1ea93720ab4 | 351 | if (current_time>0) |
roger5641 | 0:c1ea93720ab4 | 352 | { |
roger5641 | 0:c1ea93720ab4 | 353 | finished = 1; |
roger5641 | 0:c1ea93720ab4 | 354 | } |
roger5641 | 0:c1ea93720ab4 | 355 | else |
roger5641 | 0:c1ea93720ab4 | 356 | { |
roger5641 | 0:c1ea93720ab4 | 357 | counter = counter + 10; |
roger5641 | 0:c1ea93720ab4 | 358 | } |
roger5641 | 0:c1ea93720ab4 | 359 | } |
roger5641 | 0:c1ea93720ab4 | 360 | |
roger5641 | 0:c1ea93720ab4 | 361 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 362 | |
roger5641 | 0:c1ea93720ab4 | 363 | |
roger5641 | 0:c1ea93720ab4 | 364 | return(counter); |
roger5641 | 0:c1ea93720ab4 | 365 | } |
roger5641 | 0:c1ea93720ab4 | 366 | |
roger5641 | 0:c1ea93720ab4 | 367 | //Start a GPIO and Vref2 Conversion |
roger5641 | 0:c1ea93720ab4 | 368 | void LTC681x_adax( |
roger5641 | 0:c1ea93720ab4 | 369 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 370 | uint8_t CHG //GPIO Channels to be measured) |
roger5641 | 0:c1ea93720ab4 | 371 | ) |
roger5641 | 0:c1ea93720ab4 | 372 | { |
roger5641 | 0:c1ea93720ab4 | 373 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 374 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 375 | |
roger5641 | 0:c1ea93720ab4 | 376 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 377 | cmd[0] = md_bits + 0x04; |
roger5641 | 0:c1ea93720ab4 | 378 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 379 | cmd[1] = md_bits + 0x60 + CHG ; |
roger5641 | 0:c1ea93720ab4 | 380 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 381 | |
roger5641 | 0:c1ea93720ab4 | 382 | } |
roger5641 | 0:c1ea93720ab4 | 383 | |
roger5641 | 0:c1ea93720ab4 | 384 | //Start an GPIO Redundancy test |
roger5641 | 0:c1ea93720ab4 | 385 | void LTC681x_adaxd( |
roger5641 | 0:c1ea93720ab4 | 386 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 387 | uint8_t CHG //GPIO Channels to be measured) |
roger5641 | 0:c1ea93720ab4 | 388 | ) |
roger5641 | 0:c1ea93720ab4 | 389 | { |
roger5641 | 0:c1ea93720ab4 | 390 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 391 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 392 | |
roger5641 | 0:c1ea93720ab4 | 393 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 394 | cmd[0] = md_bits + 0x04; |
roger5641 | 0:c1ea93720ab4 | 395 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 396 | cmd[1] = md_bits + CHG ; |
roger5641 | 0:c1ea93720ab4 | 397 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 398 | } |
roger5641 | 0:c1ea93720ab4 | 399 | |
roger5641 | 0:c1ea93720ab4 | 400 | //Start a Status ADC Conversion |
roger5641 | 0:c1ea93720ab4 | 401 | void LTC681x_adstat( |
roger5641 | 0:c1ea93720ab4 | 402 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 403 | uint8_t CHST //GPIO Channels to be measured |
roger5641 | 0:c1ea93720ab4 | 404 | ) |
roger5641 | 0:c1ea93720ab4 | 405 | { |
roger5641 | 0:c1ea93720ab4 | 406 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 407 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 408 | |
roger5641 | 0:c1ea93720ab4 | 409 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 410 | cmd[0] = md_bits + 0x04; |
roger5641 | 0:c1ea93720ab4 | 411 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 412 | cmd[1] = md_bits + 0x68 + CHST ; |
roger5641 | 0:c1ea93720ab4 | 413 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 414 | } |
roger5641 | 0:c1ea93720ab4 | 415 | |
roger5641 | 0:c1ea93720ab4 | 416 | // Start a Status register redundancy test Conversion |
roger5641 | 0:c1ea93720ab4 | 417 | void LTC681x_adstatd( |
roger5641 | 0:c1ea93720ab4 | 418 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 419 | uint8_t CHST //GPIO Channels to be measured |
roger5641 | 0:c1ea93720ab4 | 420 | ) |
roger5641 | 0:c1ea93720ab4 | 421 | { |
roger5641 | 0:c1ea93720ab4 | 422 | uint8_t cmd[2]; |
roger5641 | 0:c1ea93720ab4 | 423 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 424 | |
roger5641 | 0:c1ea93720ab4 | 425 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 426 | cmd[0] = md_bits + 0x04; |
roger5641 | 0:c1ea93720ab4 | 427 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 428 | cmd[1] = md_bits + 0x08 + CHST ; |
roger5641 | 0:c1ea93720ab4 | 429 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 430 | |
roger5641 | 0:c1ea93720ab4 | 431 | } |
roger5641 | 0:c1ea93720ab4 | 432 | |
roger5641 | 0:c1ea93720ab4 | 433 | |
roger5641 | 0:c1ea93720ab4 | 434 | // Start an open wire Conversion |
roger5641 | 0:c1ea93720ab4 | 435 | void LTC681x_adow( |
roger5641 | 0:c1ea93720ab4 | 436 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 437 | uint8_t PUP //Discharge Permit |
roger5641 | 0:c1ea93720ab4 | 438 | ) |
roger5641 | 0:c1ea93720ab4 | 439 | { |
roger5641 | 0:c1ea93720ab4 | 440 | uint8_t cmd[2]; |
roger5641 | 0:c1ea93720ab4 | 441 | uint8_t md_bits; |
roger5641 | 0:c1ea93720ab4 | 442 | md_bits = (MD & 0x02) >> 1; |
roger5641 | 0:c1ea93720ab4 | 443 | cmd[0] = md_bits + 0x02; |
roger5641 | 0:c1ea93720ab4 | 444 | md_bits = (MD & 0x01) << 7; |
roger5641 | 0:c1ea93720ab4 | 445 | cmd[1] = md_bits + 0x28 + (PUP<<6) ;//+ CH; |
roger5641 | 0:c1ea93720ab4 | 446 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 447 | } |
roger5641 | 0:c1ea93720ab4 | 448 | |
roger5641 | 0:c1ea93720ab4 | 449 | // Reads the raw cell voltage register data |
roger5641 | 0:c1ea93720ab4 | 450 | void LTC681x_rdcv_reg(uint8_t reg, //Determines which cell voltage register is read back |
roger5641 | 0:c1ea93720ab4 | 451 | uint8_t total_ic, //the number of ICs in the |
roger5641 | 0:c1ea93720ab4 | 452 | uint8_t *data //An array of the unparsed cell codes |
roger5641 | 0:c1ea93720ab4 | 453 | ) |
roger5641 | 0:c1ea93720ab4 | 454 | { |
roger5641 | 0:c1ea93720ab4 | 455 | const uint8_t REG_LEN = 8; //number of bytes in each ICs register + 2 bytes for the PEC |
roger5641 | 0:c1ea93720ab4 | 456 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 457 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 458 | |
roger5641 | 0:c1ea93720ab4 | 459 | if (reg == 1) //1: RDCVA |
roger5641 | 0:c1ea93720ab4 | 460 | { |
roger5641 | 0:c1ea93720ab4 | 461 | cmd[1] = 0x04; |
roger5641 | 0:c1ea93720ab4 | 462 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 463 | } |
roger5641 | 0:c1ea93720ab4 | 464 | else if (reg == 2) //2: RDCVB |
roger5641 | 0:c1ea93720ab4 | 465 | { |
roger5641 | 0:c1ea93720ab4 | 466 | cmd[1] = 0x06; |
roger5641 | 0:c1ea93720ab4 | 467 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 468 | } |
roger5641 | 0:c1ea93720ab4 | 469 | else if (reg == 3) //3: RDCVC |
roger5641 | 0:c1ea93720ab4 | 470 | { |
roger5641 | 0:c1ea93720ab4 | 471 | cmd[1] = 0x08; |
roger5641 | 0:c1ea93720ab4 | 472 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 473 | } |
roger5641 | 0:c1ea93720ab4 | 474 | else if (reg == 4) //4: RDCVD |
roger5641 | 0:c1ea93720ab4 | 475 | { |
roger5641 | 0:c1ea93720ab4 | 476 | cmd[1] = 0x0A; |
roger5641 | 0:c1ea93720ab4 | 477 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 478 | } |
roger5641 | 0:c1ea93720ab4 | 479 | else if (reg == 5) //4: RDCVE |
roger5641 | 0:c1ea93720ab4 | 480 | { |
roger5641 | 0:c1ea93720ab4 | 481 | cmd[1] = 0x09; |
roger5641 | 0:c1ea93720ab4 | 482 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 483 | } |
roger5641 | 0:c1ea93720ab4 | 484 | else if (reg == 6) //4: RDCVF |
roger5641 | 0:c1ea93720ab4 | 485 | { |
roger5641 | 0:c1ea93720ab4 | 486 | cmd[1] = 0x0B; |
roger5641 | 0:c1ea93720ab4 | 487 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 488 | } |
roger5641 | 0:c1ea93720ab4 | 489 | |
roger5641 | 0:c1ea93720ab4 | 490 | |
roger5641 | 0:c1ea93720ab4 | 491 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 492 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 493 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 494 | |
roger5641 | 0:c1ea93720ab4 | 495 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 496 | spi_write_read(cmd,4,data,(REG_LEN*total_ic)); |
roger5641 | 0:c1ea93720ab4 | 497 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 498 | |
roger5641 | 0:c1ea93720ab4 | 499 | } |
roger5641 | 0:c1ea93720ab4 | 500 | |
roger5641 | 0:c1ea93720ab4 | 501 | //helper function that parses voltage measurement registers |
roger5641 | 0:c1ea93720ab4 | 502 | int8_t parse_cells(uint8_t current_ic, uint8_t cell_reg, uint8_t cell_data[], uint16_t *cell_codes, uint8_t *ic_pec) |
roger5641 | 0:c1ea93720ab4 | 503 | { |
roger5641 | 0:c1ea93720ab4 | 504 | |
roger5641 | 0:c1ea93720ab4 | 505 | const uint8_t BYT_IN_REG = 6; |
roger5641 | 0:c1ea93720ab4 | 506 | const uint8_t CELL_IN_REG = 3; |
roger5641 | 0:c1ea93720ab4 | 507 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 508 | uint16_t parsed_cell; |
roger5641 | 0:c1ea93720ab4 | 509 | uint16_t received_pec; |
roger5641 | 0:c1ea93720ab4 | 510 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 511 | uint8_t data_counter = current_ic*NUM_RX_BYT; //data counter |
roger5641 | 0:c1ea93720ab4 | 512 | |
roger5641 | 0:c1ea93720ab4 | 513 | |
roger5641 | 0:c1ea93720ab4 | 514 | for (uint8_t current_cell = 0; current_cell<CELL_IN_REG; current_cell++) // This loop parses the read back data into cell voltages, it |
roger5641 | 0:c1ea93720ab4 | 515 | { |
roger5641 | 0:c1ea93720ab4 | 516 | // loops once for each of the 3 cell voltage codes in the register |
roger5641 | 0:c1ea93720ab4 | 517 | |
roger5641 | 0:c1ea93720ab4 | 518 | parsed_cell = cell_data[data_counter] + (cell_data[data_counter + 1] << 8);//Each cell code is received as two bytes and is combined to |
roger5641 | 0:c1ea93720ab4 | 519 | // create the parsed cell voltage code |
roger5641 | 0:c1ea93720ab4 | 520 | cell_codes[current_cell + ((cell_reg - 1) * CELL_IN_REG)] = parsed_cell; |
roger5641 | 0:c1ea93720ab4 | 521 | data_counter = data_counter + 2; //Because cell voltage codes are two bytes the data counter |
roger5641 | 0:c1ea93720ab4 | 522 | //must increment by two for each parsed cell code |
roger5641 | 0:c1ea93720ab4 | 523 | } |
roger5641 | 0:c1ea93720ab4 | 524 | |
roger5641 | 0:c1ea93720ab4 | 525 | received_pec = (cell_data[data_counter] << 8) | cell_data[data_counter+1]; //The received PEC for the current_ic is transmitted as the 7th and 8th |
roger5641 | 0:c1ea93720ab4 | 526 | //after the 6 cell voltage data bytes |
roger5641 | 0:c1ea93720ab4 | 527 | data_pec = pec15_calc(BYT_IN_REG, &cell_data[(current_ic) * NUM_RX_BYT]); |
roger5641 | 0:c1ea93720ab4 | 528 | |
roger5641 | 0:c1ea93720ab4 | 529 | if (received_pec != data_pec) |
roger5641 | 0:c1ea93720ab4 | 530 | { |
roger5641 | 0:c1ea93720ab4 | 531 | pec_error = 1; //The pec_error variable is simply set negative if any PEC errors |
roger5641 | 0:c1ea93720ab4 | 532 | ic_pec[cell_reg-1]=1; |
roger5641 | 0:c1ea93720ab4 | 533 | } |
roger5641 | 0:c1ea93720ab4 | 534 | else |
roger5641 | 0:c1ea93720ab4 | 535 | { |
roger5641 | 0:c1ea93720ab4 | 536 | ic_pec[cell_reg-1]=0; |
roger5641 | 0:c1ea93720ab4 | 537 | } |
roger5641 | 0:c1ea93720ab4 | 538 | data_counter=data_counter+2; |
roger5641 | 0:c1ea93720ab4 | 539 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 540 | } |
roger5641 | 0:c1ea93720ab4 | 541 | |
roger5641 | 0:c1ea93720ab4 | 542 | /* |
roger5641 | 0:c1ea93720ab4 | 543 | The function reads a single GPIO voltage register and stores thre read data |
roger5641 | 0:c1ea93720ab4 | 544 | in the *data point as a byte array. This function is rarely used outside of |
roger5641 | 0:c1ea93720ab4 | 545 | the LTC6811_rdaux() command. |
roger5641 | 0:c1ea93720ab4 | 546 | */ |
roger5641 | 0:c1ea93720ab4 | 547 | void LTC681x_rdaux_reg(uint8_t reg, //Determines which GPIO voltage register is read back |
roger5641 | 0:c1ea93720ab4 | 548 | uint8_t total_ic, //The number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 549 | uint8_t *data //Array of the unparsed auxiliary codes |
roger5641 | 0:c1ea93720ab4 | 550 | ) |
roger5641 | 0:c1ea93720ab4 | 551 | { |
roger5641 | 0:c1ea93720ab4 | 552 | const uint8_t REG_LEN = 8; // number of bytes in the register + 2 bytes for the PEC |
roger5641 | 0:c1ea93720ab4 | 553 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 554 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 555 | |
roger5641 | 0:c1ea93720ab4 | 556 | |
roger5641 | 0:c1ea93720ab4 | 557 | if (reg == 1) //Read back auxiliary group A |
roger5641 | 0:c1ea93720ab4 | 558 | { |
roger5641 | 0:c1ea93720ab4 | 559 | cmd[1] = 0x0C; |
roger5641 | 0:c1ea93720ab4 | 560 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 561 | } |
roger5641 | 0:c1ea93720ab4 | 562 | else if (reg == 2) //Read back auxiliary group B |
roger5641 | 0:c1ea93720ab4 | 563 | { |
roger5641 | 0:c1ea93720ab4 | 564 | cmd[1] = 0x0e; |
roger5641 | 0:c1ea93720ab4 | 565 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 566 | } |
roger5641 | 0:c1ea93720ab4 | 567 | else if (reg == 3) //Read back auxiliary group C |
roger5641 | 0:c1ea93720ab4 | 568 | { |
roger5641 | 0:c1ea93720ab4 | 569 | cmd[1] = 0x0D; |
roger5641 | 0:c1ea93720ab4 | 570 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 571 | } |
roger5641 | 0:c1ea93720ab4 | 572 | else if (reg == 4) //Read back auxiliary group D |
roger5641 | 0:c1ea93720ab4 | 573 | { |
roger5641 | 0:c1ea93720ab4 | 574 | cmd[1] = 0x0F; |
roger5641 | 0:c1ea93720ab4 | 575 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 576 | } |
roger5641 | 0:c1ea93720ab4 | 577 | else //Read back auxiliary group A |
roger5641 | 0:c1ea93720ab4 | 578 | { |
roger5641 | 0:c1ea93720ab4 | 579 | cmd[1] = 0x0C; |
roger5641 | 0:c1ea93720ab4 | 580 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 581 | } |
roger5641 | 0:c1ea93720ab4 | 582 | |
roger5641 | 0:c1ea93720ab4 | 583 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 584 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 585 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 586 | |
roger5641 | 0:c1ea93720ab4 | 587 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 588 | spi_write_read(cmd,4,data,(REG_LEN*total_ic)); |
roger5641 | 0:c1ea93720ab4 | 589 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 590 | |
roger5641 | 0:c1ea93720ab4 | 591 | } |
roger5641 | 0:c1ea93720ab4 | 592 | |
roger5641 | 0:c1ea93720ab4 | 593 | /* |
roger5641 | 0:c1ea93720ab4 | 594 | The function reads a single stat register and stores the read data |
roger5641 | 0:c1ea93720ab4 | 595 | in the *data point as a byte array. This function is rarely used outside of |
roger5641 | 0:c1ea93720ab4 | 596 | the LTC6811_rdstat() command. |
roger5641 | 0:c1ea93720ab4 | 597 | */ |
roger5641 | 0:c1ea93720ab4 | 598 | void LTC681x_rdstat_reg(uint8_t reg, //Determines which stat register is read back |
roger5641 | 0:c1ea93720ab4 | 599 | uint8_t total_ic, //The number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 600 | uint8_t *data //Array of the unparsed stat codes |
roger5641 | 0:c1ea93720ab4 | 601 | ) |
roger5641 | 0:c1ea93720ab4 | 602 | { |
roger5641 | 0:c1ea93720ab4 | 603 | const uint8_t REG_LEN = 8; // number of bytes in the register + 2 bytes for the PEC |
roger5641 | 0:c1ea93720ab4 | 604 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 605 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 606 | |
roger5641 | 0:c1ea93720ab4 | 607 | |
roger5641 | 0:c1ea93720ab4 | 608 | if (reg == 1) //Read back statiliary group A |
roger5641 | 0:c1ea93720ab4 | 609 | { |
roger5641 | 0:c1ea93720ab4 | 610 | cmd[1] = 0x10; |
roger5641 | 0:c1ea93720ab4 | 611 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 612 | } |
roger5641 | 0:c1ea93720ab4 | 613 | else if (reg == 2) //Read back statiliary group B |
roger5641 | 0:c1ea93720ab4 | 614 | { |
roger5641 | 0:c1ea93720ab4 | 615 | cmd[1] = 0x12; |
roger5641 | 0:c1ea93720ab4 | 616 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 617 | } |
roger5641 | 0:c1ea93720ab4 | 618 | |
roger5641 | 0:c1ea93720ab4 | 619 | else //Read back statiliary group A |
roger5641 | 0:c1ea93720ab4 | 620 | { |
roger5641 | 0:c1ea93720ab4 | 621 | cmd[1] = 0x10; |
roger5641 | 0:c1ea93720ab4 | 622 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 623 | } |
roger5641 | 0:c1ea93720ab4 | 624 | |
roger5641 | 0:c1ea93720ab4 | 625 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 626 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 627 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 628 | |
roger5641 | 0:c1ea93720ab4 | 629 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 630 | spi_write_read(cmd,4,data,(REG_LEN*total_ic)); |
roger5641 | 0:c1ea93720ab4 | 631 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 632 | |
roger5641 | 0:c1ea93720ab4 | 633 | } |
roger5641 | 0:c1ea93720ab4 | 634 | |
roger5641 | 0:c1ea93720ab4 | 635 | /* |
roger5641 | 0:c1ea93720ab4 | 636 | The command clears the cell voltage registers and intiallizes |
roger5641 | 0:c1ea93720ab4 | 637 | all values to 1. The register will read back hexadecimal 0xFF |
roger5641 | 0:c1ea93720ab4 | 638 | after the command is sent. |
roger5641 | 0:c1ea93720ab4 | 639 | */ |
roger5641 | 0:c1ea93720ab4 | 640 | void LTC681x_clrcell() |
roger5641 | 0:c1ea93720ab4 | 641 | { |
roger5641 | 0:c1ea93720ab4 | 642 | uint8_t cmd[2]= {0x07 , 0x11}; |
roger5641 | 0:c1ea93720ab4 | 643 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 644 | } |
roger5641 | 0:c1ea93720ab4 | 645 | |
roger5641 | 0:c1ea93720ab4 | 646 | |
roger5641 | 0:c1ea93720ab4 | 647 | /* |
roger5641 | 0:c1ea93720ab4 | 648 | The command clears the Auxiliary registers and initializes |
roger5641 | 0:c1ea93720ab4 | 649 | all values to 1. The register will read back hexadecimal 0xFF |
roger5641 | 0:c1ea93720ab4 | 650 | after the command is sent. |
roger5641 | 0:c1ea93720ab4 | 651 | */ |
roger5641 | 0:c1ea93720ab4 | 652 | void LTC681x_clraux() |
roger5641 | 0:c1ea93720ab4 | 653 | { |
roger5641 | 0:c1ea93720ab4 | 654 | uint8_t cmd[2]= {0x07 , 0x12}; |
roger5641 | 0:c1ea93720ab4 | 655 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 656 | } |
roger5641 | 0:c1ea93720ab4 | 657 | |
roger5641 | 0:c1ea93720ab4 | 658 | |
roger5641 | 0:c1ea93720ab4 | 659 | /* |
roger5641 | 0:c1ea93720ab4 | 660 | The command clears the Stat registers and intiallizes |
roger5641 | 0:c1ea93720ab4 | 661 | all values to 1. The register will read back hexadecimal 0xFF |
roger5641 | 0:c1ea93720ab4 | 662 | after the command is sent. |
roger5641 | 0:c1ea93720ab4 | 663 | |
roger5641 | 0:c1ea93720ab4 | 664 | */ |
roger5641 | 0:c1ea93720ab4 | 665 | void LTC681x_clrstat() |
roger5641 | 0:c1ea93720ab4 | 666 | { |
roger5641 | 0:c1ea93720ab4 | 667 | uint8_t cmd[2]= {0x07 , 0x13}; |
roger5641 | 0:c1ea93720ab4 | 668 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 669 | } |
roger5641 | 0:c1ea93720ab4 | 670 | /* |
roger5641 | 0:c1ea93720ab4 | 671 | The command clears the Sctrl registers and initializes |
roger5641 | 0:c1ea93720ab4 | 672 | all values to 0. The register will read back hexadecimal 0x00 |
roger5641 | 0:c1ea93720ab4 | 673 | after the command is sent. |
roger5641 | 0:c1ea93720ab4 | 674 | */ |
roger5641 | 0:c1ea93720ab4 | 675 | void LTC681x_clrsctrl() |
roger5641 | 0:c1ea93720ab4 | 676 | { |
roger5641 | 0:c1ea93720ab4 | 677 | uint8_t cmd[2]= {0x00 , 0x18}; |
roger5641 | 0:c1ea93720ab4 | 678 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 679 | } |
roger5641 | 0:c1ea93720ab4 | 680 | //Starts the Mux Decoder diagnostic self test |
roger5641 | 0:c1ea93720ab4 | 681 | void LTC681x_diagn() |
roger5641 | 0:c1ea93720ab4 | 682 | { |
roger5641 | 0:c1ea93720ab4 | 683 | uint8_t cmd[2] = {0x07 , 0x15}; |
roger5641 | 0:c1ea93720ab4 | 684 | cmd_68(cmd); |
roger5641 | 0:c1ea93720ab4 | 685 | } |
roger5641 | 0:c1ea93720ab4 | 686 | |
roger5641 | 0:c1ea93720ab4 | 687 | //Reads and parses the LTC681x cell voltage registers. |
roger5641 | 0:c1ea93720ab4 | 688 | uint8_t LTC681x_rdcv(uint8_t reg, // Controls which cell voltage register is read back. |
roger5641 | 0:c1ea93720ab4 | 689 | uint8_t total_ic, // the number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 690 | cell_asic ic[] // Array of the parsed cell codes |
roger5641 | 0:c1ea93720ab4 | 691 | ) |
roger5641 | 0:c1ea93720ab4 | 692 | { |
roger5641 | 0:c1ea93720ab4 | 693 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 694 | uint8_t *cell_data; |
roger5641 | 0:c1ea93720ab4 | 695 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 696 | cell_data = (uint8_t *) malloc((NUM_RX_BYT*total_ic)*sizeof(uint8_t)); |
roger5641 | 0:c1ea93720ab4 | 697 | |
roger5641 | 0:c1ea93720ab4 | 698 | if (reg == 0) |
roger5641 | 0:c1ea93720ab4 | 699 | { |
roger5641 | 0:c1ea93720ab4 | 700 | for (uint8_t cell_reg = 1; cell_reg<ic[0].ic_reg.num_cv_reg+1; cell_reg++) //executes once for each of the LTC6811 cell voltage registers |
roger5641 | 0:c1ea93720ab4 | 701 | { |
roger5641 | 0:c1ea93720ab4 | 702 | LTC681x_rdcv_reg(cell_reg, total_ic,cell_data ); |
roger5641 | 0:c1ea93720ab4 | 703 | for (int current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 704 | { |
roger5641 | 0:c1ea93720ab4 | 705 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 706 | { |
roger5641 | 0:c1ea93720ab4 | 707 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 708 | } |
roger5641 | 0:c1ea93720ab4 | 709 | else |
roger5641 | 0:c1ea93720ab4 | 710 | { |
roger5641 | 0:c1ea93720ab4 | 711 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 712 | } |
roger5641 | 0:c1ea93720ab4 | 713 | pec_error = pec_error + parse_cells(current_ic,cell_reg, cell_data, |
roger5641 | 0:c1ea93720ab4 | 714 | &ic[c_ic].cells.c_codes[0], |
roger5641 | 0:c1ea93720ab4 | 715 | &ic[c_ic].cells.pec_match[0]); |
roger5641 | 0:c1ea93720ab4 | 716 | } |
roger5641 | 0:c1ea93720ab4 | 717 | } |
roger5641 | 0:c1ea93720ab4 | 718 | } |
roger5641 | 0:c1ea93720ab4 | 719 | |
roger5641 | 0:c1ea93720ab4 | 720 | else |
roger5641 | 0:c1ea93720ab4 | 721 | { |
roger5641 | 0:c1ea93720ab4 | 722 | LTC681x_rdcv_reg(reg, total_ic,cell_data); |
roger5641 | 0:c1ea93720ab4 | 723 | |
roger5641 | 0:c1ea93720ab4 | 724 | for (int current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 725 | { |
roger5641 | 0:c1ea93720ab4 | 726 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 727 | { |
roger5641 | 0:c1ea93720ab4 | 728 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 729 | } |
roger5641 | 0:c1ea93720ab4 | 730 | else |
roger5641 | 0:c1ea93720ab4 | 731 | { |
roger5641 | 0:c1ea93720ab4 | 732 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 733 | } |
roger5641 | 0:c1ea93720ab4 | 734 | pec_error = pec_error + parse_cells(current_ic,reg, &cell_data[8*c_ic], |
roger5641 | 0:c1ea93720ab4 | 735 | &ic[c_ic].cells.c_codes[0], |
roger5641 | 0:c1ea93720ab4 | 736 | &ic[c_ic].cells.pec_match[0]); |
roger5641 | 0:c1ea93720ab4 | 737 | } |
roger5641 | 0:c1ea93720ab4 | 738 | } |
roger5641 | 0:c1ea93720ab4 | 739 | LTC681x_check_pec(total_ic,CELL,ic); |
roger5641 | 0:c1ea93720ab4 | 740 | free(cell_data); |
roger5641 | 0:c1ea93720ab4 | 741 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 742 | } |
roger5641 | 0:c1ea93720ab4 | 743 | |
roger5641 | 0:c1ea93720ab4 | 744 | |
roger5641 | 0:c1ea93720ab4 | 745 | |
roger5641 | 0:c1ea93720ab4 | 746 | /* |
roger5641 | 0:c1ea93720ab4 | 747 | The function is used |
roger5641 | 0:c1ea93720ab4 | 748 | to read the parsed GPIO codes of the LTC6811. This function will send the requested |
roger5641 | 0:c1ea93720ab4 | 749 | read commands parse the data and store the gpio voltages in aux_codes variable |
roger5641 | 0:c1ea93720ab4 | 750 | */ |
roger5641 | 0:c1ea93720ab4 | 751 | int8_t LTC681x_rdaux(uint8_t reg, //Determines which GPIO voltage register is read back. |
roger5641 | 0:c1ea93720ab4 | 752 | uint8_t total_ic,//the number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 753 | cell_asic ic[]//A two dimensional array of the gpio voltage codes. |
roger5641 | 0:c1ea93720ab4 | 754 | ) |
roger5641 | 0:c1ea93720ab4 | 755 | { |
roger5641 | 0:c1ea93720ab4 | 756 | uint8_t *data; |
roger5641 | 0:c1ea93720ab4 | 757 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 758 | uint8_t c_ic =0; |
roger5641 | 0:c1ea93720ab4 | 759 | data = (uint8_t *) malloc((NUM_RX_BYT*total_ic)*sizeof(uint8_t)); |
roger5641 | 0:c1ea93720ab4 | 760 | |
roger5641 | 0:c1ea93720ab4 | 761 | if (reg == 0) |
roger5641 | 0:c1ea93720ab4 | 762 | { |
roger5641 | 0:c1ea93720ab4 | 763 | for (uint8_t gpio_reg = 1; gpio_reg<ic[0].ic_reg.num_gpio_reg+1; gpio_reg++) //executes once for each of the LTC6811 aux voltage registers |
roger5641 | 0:c1ea93720ab4 | 764 | { |
roger5641 | 0:c1ea93720ab4 | 765 | LTC681x_rdaux_reg(gpio_reg, total_ic,data); //Reads the raw auxiliary register data into the data[] array |
roger5641 | 0:c1ea93720ab4 | 766 | for (int current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 767 | { |
roger5641 | 0:c1ea93720ab4 | 768 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 769 | { |
roger5641 | 0:c1ea93720ab4 | 770 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 771 | } |
roger5641 | 0:c1ea93720ab4 | 772 | else |
roger5641 | 0:c1ea93720ab4 | 773 | { |
roger5641 | 0:c1ea93720ab4 | 774 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 775 | } |
roger5641 | 0:c1ea93720ab4 | 776 | pec_error = parse_cells(current_ic,gpio_reg, data, |
roger5641 | 0:c1ea93720ab4 | 777 | &ic[c_ic].aux.a_codes[0], |
roger5641 | 0:c1ea93720ab4 | 778 | &ic[c_ic].aux.pec_match[0]); |
roger5641 | 0:c1ea93720ab4 | 779 | |
roger5641 | 0:c1ea93720ab4 | 780 | } |
roger5641 | 0:c1ea93720ab4 | 781 | } |
roger5641 | 0:c1ea93720ab4 | 782 | } |
roger5641 | 0:c1ea93720ab4 | 783 | else |
roger5641 | 0:c1ea93720ab4 | 784 | { |
roger5641 | 0:c1ea93720ab4 | 785 | LTC681x_rdaux_reg(reg, total_ic, data); |
roger5641 | 0:c1ea93720ab4 | 786 | |
roger5641 | 0:c1ea93720ab4 | 787 | for (int current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 788 | { |
roger5641 | 0:c1ea93720ab4 | 789 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 790 | { |
roger5641 | 0:c1ea93720ab4 | 791 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 792 | } |
roger5641 | 0:c1ea93720ab4 | 793 | else |
roger5641 | 0:c1ea93720ab4 | 794 | { |
roger5641 | 0:c1ea93720ab4 | 795 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 796 | } |
roger5641 | 0:c1ea93720ab4 | 797 | pec_error = parse_cells(current_ic,reg, data, |
roger5641 | 0:c1ea93720ab4 | 798 | &ic[c_ic].aux.a_codes[0], |
roger5641 | 0:c1ea93720ab4 | 799 | &ic[c_ic].aux.pec_match[0]); |
roger5641 | 0:c1ea93720ab4 | 800 | } |
roger5641 | 0:c1ea93720ab4 | 801 | |
roger5641 | 0:c1ea93720ab4 | 802 | } |
roger5641 | 0:c1ea93720ab4 | 803 | LTC681x_check_pec(total_ic,AUX,ic); |
roger5641 | 0:c1ea93720ab4 | 804 | free(data); |
roger5641 | 0:c1ea93720ab4 | 805 | return (pec_error); |
roger5641 | 0:c1ea93720ab4 | 806 | } |
roger5641 | 0:c1ea93720ab4 | 807 | |
roger5641 | 0:c1ea93720ab4 | 808 | // Reads and parses the LTC681x stat registers. |
roger5641 | 0:c1ea93720ab4 | 809 | int8_t LTC681x_rdstat(uint8_t reg, //Determines which Stat register is read back. |
roger5641 | 0:c1ea93720ab4 | 810 | uint8_t total_ic,//the number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 811 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 812 | ) |
roger5641 | 0:c1ea93720ab4 | 813 | |
roger5641 | 0:c1ea93720ab4 | 814 | { |
roger5641 | 0:c1ea93720ab4 | 815 | |
roger5641 | 0:c1ea93720ab4 | 816 | const uint8_t BYT_IN_REG = 6; |
roger5641 | 0:c1ea93720ab4 | 817 | const uint8_t GPIO_IN_REG = 3; |
roger5641 | 0:c1ea93720ab4 | 818 | |
roger5641 | 0:c1ea93720ab4 | 819 | uint8_t *data; |
roger5641 | 0:c1ea93720ab4 | 820 | uint8_t data_counter = 0; |
roger5641 | 0:c1ea93720ab4 | 821 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 822 | uint16_t parsed_stat; |
roger5641 | 0:c1ea93720ab4 | 823 | uint16_t received_pec; |
roger5641 | 0:c1ea93720ab4 | 824 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 825 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 826 | data = (uint8_t *) malloc((NUM_RX_BYT*total_ic)*sizeof(uint8_t)); |
roger5641 | 0:c1ea93720ab4 | 827 | |
roger5641 | 0:c1ea93720ab4 | 828 | if (reg == 0) |
roger5641 | 0:c1ea93720ab4 | 829 | { |
roger5641 | 0:c1ea93720ab4 | 830 | |
roger5641 | 0:c1ea93720ab4 | 831 | for (uint8_t stat_reg = 1; stat_reg< 3; stat_reg++) //executes once for each of the LTC6811 stat voltage registers |
roger5641 | 0:c1ea93720ab4 | 832 | { |
roger5641 | 0:c1ea93720ab4 | 833 | data_counter = 0; |
roger5641 | 0:c1ea93720ab4 | 834 | LTC681x_rdstat_reg(stat_reg, total_ic,data); //Reads the raw statiliary register data into the data[] array |
roger5641 | 0:c1ea93720ab4 | 835 | |
roger5641 | 0:c1ea93720ab4 | 836 | for (uint8_t current_ic = 0 ; current_ic < total_ic; current_ic++) // executes for every LTC6811 in the daisy chain |
roger5641 | 0:c1ea93720ab4 | 837 | { |
roger5641 | 0:c1ea93720ab4 | 838 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 839 | { |
roger5641 | 0:c1ea93720ab4 | 840 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 841 | } |
roger5641 | 0:c1ea93720ab4 | 842 | else |
roger5641 | 0:c1ea93720ab4 | 843 | { |
roger5641 | 0:c1ea93720ab4 | 844 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 845 | } |
roger5641 | 0:c1ea93720ab4 | 846 | // current_ic is used as the IC counter |
roger5641 | 0:c1ea93720ab4 | 847 | if (stat_reg ==1) |
roger5641 | 0:c1ea93720ab4 | 848 | { |
roger5641 | 0:c1ea93720ab4 | 849 | for (uint8_t current_gpio = 0; current_gpio< GPIO_IN_REG; current_gpio++) // This loop parses the read back data into GPIO voltages, it |
roger5641 | 0:c1ea93720ab4 | 850 | { |
roger5641 | 0:c1ea93720ab4 | 851 | // loops once for each of the 3 gpio voltage codes in the register |
roger5641 | 0:c1ea93720ab4 | 852 | |
roger5641 | 0:c1ea93720ab4 | 853 | parsed_stat = data[data_counter] + (data[data_counter+1]<<8); //Each gpio codes is received as two bytes and is combined to |
roger5641 | 0:c1ea93720ab4 | 854 | ic[c_ic].stat.stat_codes[current_gpio] = parsed_stat; |
roger5641 | 0:c1ea93720ab4 | 855 | data_counter=data_counter+2; //Because gpio voltage codes are two bytes the data counter |
roger5641 | 0:c1ea93720ab4 | 856 | |
roger5641 | 0:c1ea93720ab4 | 857 | } |
roger5641 | 0:c1ea93720ab4 | 858 | } |
roger5641 | 0:c1ea93720ab4 | 859 | else if (stat_reg == 2) |
roger5641 | 0:c1ea93720ab4 | 860 | { |
roger5641 | 0:c1ea93720ab4 | 861 | parsed_stat = data[data_counter] + (data[data_counter+1]<<8); //Each gpio codes is received as two bytes and is combined to |
roger5641 | 0:c1ea93720ab4 | 862 | data_counter = data_counter +2; |
roger5641 | 0:c1ea93720ab4 | 863 | ic[c_ic].stat.stat_codes[3] = parsed_stat; |
roger5641 | 0:c1ea93720ab4 | 864 | ic[c_ic].stat.flags[0] = data[data_counter++]; |
roger5641 | 0:c1ea93720ab4 | 865 | ic[c_ic].stat.flags[1] = data[data_counter++]; |
roger5641 | 0:c1ea93720ab4 | 866 | ic[c_ic].stat.flags[2] = data[data_counter++]; |
roger5641 | 0:c1ea93720ab4 | 867 | ic[c_ic].stat.mux_fail[0] = (data[data_counter] & 0x02)>>1; |
roger5641 | 0:c1ea93720ab4 | 868 | ic[c_ic].stat.thsd[0] = data[data_counter++] & 0x01; |
roger5641 | 0:c1ea93720ab4 | 869 | } |
roger5641 | 0:c1ea93720ab4 | 870 | |
roger5641 | 0:c1ea93720ab4 | 871 | received_pec = (data[data_counter]<<8)+ data[data_counter+1]; //The received PEC for the current_ic is transmitted as the 7th and 8th |
roger5641 | 0:c1ea93720ab4 | 872 | //after the 6 gpio voltage data bytes |
roger5641 | 0:c1ea93720ab4 | 873 | data_pec = pec15_calc(BYT_IN_REG, &data[current_ic*NUM_RX_BYT]); |
roger5641 | 0:c1ea93720ab4 | 874 | |
roger5641 | 0:c1ea93720ab4 | 875 | if (received_pec != data_pec) |
roger5641 | 0:c1ea93720ab4 | 876 | { |
roger5641 | 0:c1ea93720ab4 | 877 | pec_error = -1; //The pec_error variable is simply set negative if any PEC errors |
roger5641 | 0:c1ea93720ab4 | 878 | ic[c_ic].stat.pec_match[stat_reg-1]=1; |
roger5641 | 0:c1ea93720ab4 | 879 | //are detected in the received serial data |
roger5641 | 0:c1ea93720ab4 | 880 | } |
roger5641 | 0:c1ea93720ab4 | 881 | else |
roger5641 | 0:c1ea93720ab4 | 882 | { |
roger5641 | 0:c1ea93720ab4 | 883 | ic[c_ic].stat.pec_match[stat_reg-1]=0; |
roger5641 | 0:c1ea93720ab4 | 884 | } |
roger5641 | 0:c1ea93720ab4 | 885 | |
roger5641 | 0:c1ea93720ab4 | 886 | data_counter=data_counter+2; //Because the transmitted PEC code is 2 bytes long the data_counter |
roger5641 | 0:c1ea93720ab4 | 887 | //must be incremented by 2 bytes to point to the next ICs gpio voltage data |
roger5641 | 0:c1ea93720ab4 | 888 | } |
roger5641 | 0:c1ea93720ab4 | 889 | |
roger5641 | 0:c1ea93720ab4 | 890 | |
roger5641 | 0:c1ea93720ab4 | 891 | } |
roger5641 | 0:c1ea93720ab4 | 892 | |
roger5641 | 0:c1ea93720ab4 | 893 | } |
roger5641 | 0:c1ea93720ab4 | 894 | else |
roger5641 | 0:c1ea93720ab4 | 895 | { |
roger5641 | 0:c1ea93720ab4 | 896 | |
roger5641 | 0:c1ea93720ab4 | 897 | LTC681x_rdstat_reg(reg, total_ic, data); |
roger5641 | 0:c1ea93720ab4 | 898 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) // executes for every LTC6811 in the daisy chain |
roger5641 | 0:c1ea93720ab4 | 899 | { |
roger5641 | 0:c1ea93720ab4 | 900 | // current_ic is used as an IC counter |
roger5641 | 0:c1ea93720ab4 | 901 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 902 | { |
roger5641 | 0:c1ea93720ab4 | 903 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 904 | } |
roger5641 | 0:c1ea93720ab4 | 905 | else |
roger5641 | 0:c1ea93720ab4 | 906 | { |
roger5641 | 0:c1ea93720ab4 | 907 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 908 | } |
roger5641 | 0:c1ea93720ab4 | 909 | if (reg ==1) |
roger5641 | 0:c1ea93720ab4 | 910 | { |
roger5641 | 0:c1ea93720ab4 | 911 | for (uint8_t current_gpio = 0; current_gpio< GPIO_IN_REG; current_gpio++) // This loop parses the read back data into GPIO voltages, it |
roger5641 | 0:c1ea93720ab4 | 912 | { |
roger5641 | 0:c1ea93720ab4 | 913 | // loops once for each of the 3 gpio voltage codes in the register |
roger5641 | 0:c1ea93720ab4 | 914 | parsed_stat = data[data_counter] + (data[data_counter+1]<<8); //Each gpio codes is received as two bytes and is combined to |
roger5641 | 0:c1ea93720ab4 | 915 | // create the parsed gpio voltage code |
roger5641 | 0:c1ea93720ab4 | 916 | |
roger5641 | 0:c1ea93720ab4 | 917 | ic[c_ic].stat.stat_codes[current_gpio] = parsed_stat; |
roger5641 | 0:c1ea93720ab4 | 918 | data_counter=data_counter+2; //Because gpio voltage codes are two bytes the data counter |
roger5641 | 0:c1ea93720ab4 | 919 | //must increment by two for each parsed gpio voltage code |
roger5641 | 0:c1ea93720ab4 | 920 | |
roger5641 | 0:c1ea93720ab4 | 921 | } |
roger5641 | 0:c1ea93720ab4 | 922 | } |
roger5641 | 0:c1ea93720ab4 | 923 | else if (reg == 2) |
roger5641 | 0:c1ea93720ab4 | 924 | { |
roger5641 | 0:c1ea93720ab4 | 925 | parsed_stat = data[data_counter++] + (data[data_counter++]<<8); //Each gpio codes is received as two bytes and is combined to |
roger5641 | 0:c1ea93720ab4 | 926 | ic[c_ic].stat.stat_codes[3] = parsed_stat; |
roger5641 | 0:c1ea93720ab4 | 927 | ic[c_ic].stat.flags[0] = data[data_counter++]; |
roger5641 | 0:c1ea93720ab4 | 928 | ic[c_ic].stat.flags[1] = data[data_counter++]; |
roger5641 | 0:c1ea93720ab4 | 929 | ic[c_ic].stat.flags[2] = data[data_counter++]; |
roger5641 | 0:c1ea93720ab4 | 930 | ic[c_ic].stat.mux_fail[0] = (data[data_counter] & 0x02)>>1; |
roger5641 | 0:c1ea93720ab4 | 931 | ic[c_ic].stat.thsd[0] = data[data_counter++] & 0x01; |
roger5641 | 0:c1ea93720ab4 | 932 | } |
roger5641 | 0:c1ea93720ab4 | 933 | |
roger5641 | 0:c1ea93720ab4 | 934 | |
roger5641 | 0:c1ea93720ab4 | 935 | received_pec = (data[data_counter]<<8)+ data[data_counter+1]; //The received PEC for the current_ic is transmitted as the 7th and 8th |
roger5641 | 0:c1ea93720ab4 | 936 | //after the 6 gpio voltage data bytes |
roger5641 | 0:c1ea93720ab4 | 937 | data_pec = pec15_calc(BYT_IN_REG, &data[current_ic*NUM_RX_BYT]); |
roger5641 | 0:c1ea93720ab4 | 938 | if (received_pec != data_pec) |
roger5641 | 0:c1ea93720ab4 | 939 | { |
roger5641 | 0:c1ea93720ab4 | 940 | pec_error = -1; //The pec_error variable is simply set negative if any PEC errors |
roger5641 | 0:c1ea93720ab4 | 941 | ic[c_ic].stat.pec_match[reg-1]=1; |
roger5641 | 0:c1ea93720ab4 | 942 | |
roger5641 | 0:c1ea93720ab4 | 943 | } |
roger5641 | 0:c1ea93720ab4 | 944 | |
roger5641 | 0:c1ea93720ab4 | 945 | data_counter=data_counter+2; |
roger5641 | 0:c1ea93720ab4 | 946 | } |
roger5641 | 0:c1ea93720ab4 | 947 | } |
roger5641 | 0:c1ea93720ab4 | 948 | LTC681x_check_pec(total_ic,STAT,ic); |
roger5641 | 0:c1ea93720ab4 | 949 | free(data); |
roger5641 | 0:c1ea93720ab4 | 950 | return (pec_error); |
roger5641 | 0:c1ea93720ab4 | 951 | } |
roger5641 | 0:c1ea93720ab4 | 952 | |
roger5641 | 0:c1ea93720ab4 | 953 | //Write the LTC681x CFGRA |
roger5641 | 0:c1ea93720ab4 | 954 | void LTC681x_wrcfg(uint8_t total_ic, //The number of ICs being written to |
roger5641 | 0:c1ea93720ab4 | 955 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 956 | ) |
roger5641 | 0:c1ea93720ab4 | 957 | { |
roger5641 | 0:c1ea93720ab4 | 958 | uint8_t cmd[2] = {0x00 , 0x01} ; |
roger5641 | 0:c1ea93720ab4 | 959 | uint8_t write_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 960 | uint8_t write_count = 0; |
roger5641 | 0:c1ea93720ab4 | 961 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 962 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 963 | { |
roger5641 | 0:c1ea93720ab4 | 964 | if (ic->isospi_reverse == true) |
roger5641 | 0:c1ea93720ab4 | 965 | { |
roger5641 | 0:c1ea93720ab4 | 966 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 967 | } |
roger5641 | 0:c1ea93720ab4 | 968 | else |
roger5641 | 0:c1ea93720ab4 | 969 | { |
roger5641 | 0:c1ea93720ab4 | 970 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 971 | } |
roger5641 | 0:c1ea93720ab4 | 972 | |
roger5641 | 0:c1ea93720ab4 | 973 | for (uint8_t data = 0; data<6; data++) |
roger5641 | 0:c1ea93720ab4 | 974 | { |
roger5641 | 0:c1ea93720ab4 | 975 | write_buffer[write_count] = ic[c_ic].config.tx_data[data]; |
roger5641 | 0:c1ea93720ab4 | 976 | write_count++; |
roger5641 | 0:c1ea93720ab4 | 977 | } |
roger5641 | 0:c1ea93720ab4 | 978 | } |
roger5641 | 0:c1ea93720ab4 | 979 | write_68(total_ic, cmd, write_buffer); |
roger5641 | 0:c1ea93720ab4 | 980 | } |
roger5641 | 0:c1ea93720ab4 | 981 | |
roger5641 | 0:c1ea93720ab4 | 982 | //Write the LTC681x CFGRB |
roger5641 | 0:c1ea93720ab4 | 983 | void LTC681x_wrcfgb(uint8_t total_ic, //The number of ICs being written to |
roger5641 | 0:c1ea93720ab4 | 984 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 985 | ) |
roger5641 | 0:c1ea93720ab4 | 986 | { |
roger5641 | 0:c1ea93720ab4 | 987 | uint8_t cmd[2] = {0x00 , 0x24} ; |
roger5641 | 0:c1ea93720ab4 | 988 | uint8_t write_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 989 | uint8_t write_count = 0; |
roger5641 | 0:c1ea93720ab4 | 990 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 991 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 992 | { |
roger5641 | 0:c1ea93720ab4 | 993 | if (ic->isospi_reverse == true) |
roger5641 | 0:c1ea93720ab4 | 994 | { |
roger5641 | 0:c1ea93720ab4 | 995 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 996 | } |
roger5641 | 0:c1ea93720ab4 | 997 | else |
roger5641 | 0:c1ea93720ab4 | 998 | { |
roger5641 | 0:c1ea93720ab4 | 999 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1000 | } |
roger5641 | 0:c1ea93720ab4 | 1001 | |
roger5641 | 0:c1ea93720ab4 | 1002 | for (uint8_t data = 0; data<6; data++) |
roger5641 | 0:c1ea93720ab4 | 1003 | { |
roger5641 | 0:c1ea93720ab4 | 1004 | write_buffer[write_count] = ic[c_ic].configb.tx_data[data]; |
roger5641 | 0:c1ea93720ab4 | 1005 | write_count++; |
roger5641 | 0:c1ea93720ab4 | 1006 | } |
roger5641 | 0:c1ea93720ab4 | 1007 | } |
roger5641 | 0:c1ea93720ab4 | 1008 | write_68(total_ic, cmd, write_buffer); |
roger5641 | 0:c1ea93720ab4 | 1009 | } |
roger5641 | 0:c1ea93720ab4 | 1010 | |
roger5641 | 0:c1ea93720ab4 | 1011 | //Read CFGA |
roger5641 | 0:c1ea93720ab4 | 1012 | int8_t LTC681x_rdcfg(uint8_t total_ic, //Number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 1013 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 1014 | ) |
roger5641 | 0:c1ea93720ab4 | 1015 | { |
roger5641 | 0:c1ea93720ab4 | 1016 | uint8_t cmd[2]= {0x00 , 0x02}; |
roger5641 | 0:c1ea93720ab4 | 1017 | uint8_t read_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 1018 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 1019 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 1020 | uint16_t calc_pec; |
roger5641 | 0:c1ea93720ab4 | 1021 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 1022 | pec_error = read_68(total_ic, cmd, read_buffer); |
roger5641 | 0:c1ea93720ab4 | 1023 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1024 | { |
roger5641 | 0:c1ea93720ab4 | 1025 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 1026 | { |
roger5641 | 0:c1ea93720ab4 | 1027 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 1028 | } |
roger5641 | 0:c1ea93720ab4 | 1029 | else |
roger5641 | 0:c1ea93720ab4 | 1030 | { |
roger5641 | 0:c1ea93720ab4 | 1031 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1032 | } |
roger5641 | 0:c1ea93720ab4 | 1033 | |
roger5641 | 0:c1ea93720ab4 | 1034 | for (int byte=0; byte<8; byte++) |
roger5641 | 0:c1ea93720ab4 | 1035 | { |
roger5641 | 0:c1ea93720ab4 | 1036 | ic[c_ic].config.rx_data[byte] = read_buffer[byte+(8*current_ic)]; |
roger5641 | 0:c1ea93720ab4 | 1037 | } |
roger5641 | 0:c1ea93720ab4 | 1038 | calc_pec = pec15_calc(6,&read_buffer[8*current_ic]); |
roger5641 | 0:c1ea93720ab4 | 1039 | data_pec = read_buffer[7+(8*current_ic)] | (read_buffer[6+(8*current_ic)]<<8); |
roger5641 | 0:c1ea93720ab4 | 1040 | if (calc_pec != data_pec ) |
roger5641 | 0:c1ea93720ab4 | 1041 | { |
roger5641 | 0:c1ea93720ab4 | 1042 | ic[c_ic].config.rx_pec_match = 1; |
roger5641 | 0:c1ea93720ab4 | 1043 | } |
roger5641 | 0:c1ea93720ab4 | 1044 | else ic[c_ic].config.rx_pec_match = 0; |
roger5641 | 0:c1ea93720ab4 | 1045 | } |
roger5641 | 0:c1ea93720ab4 | 1046 | LTC681x_check_pec(total_ic,CFGR,ic); |
roger5641 | 0:c1ea93720ab4 | 1047 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 1048 | } |
roger5641 | 0:c1ea93720ab4 | 1049 | |
roger5641 | 0:c1ea93720ab4 | 1050 | //Reads CFGB |
roger5641 | 0:c1ea93720ab4 | 1051 | int8_t LTC681x_rdcfgb(uint8_t total_ic, //Number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 1052 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 1053 | ) |
roger5641 | 0:c1ea93720ab4 | 1054 | { |
roger5641 | 0:c1ea93720ab4 | 1055 | uint8_t cmd[2]= {0x00 , 0x26}; |
roger5641 | 0:c1ea93720ab4 | 1056 | uint8_t read_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 1057 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 1058 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 1059 | uint16_t calc_pec; |
roger5641 | 0:c1ea93720ab4 | 1060 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 1061 | pec_error = read_68(total_ic, cmd, read_buffer); |
roger5641 | 0:c1ea93720ab4 | 1062 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1063 | { |
roger5641 | 0:c1ea93720ab4 | 1064 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 1065 | { |
roger5641 | 0:c1ea93720ab4 | 1066 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 1067 | } |
roger5641 | 0:c1ea93720ab4 | 1068 | else |
roger5641 | 0:c1ea93720ab4 | 1069 | { |
roger5641 | 0:c1ea93720ab4 | 1070 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1071 | } |
roger5641 | 0:c1ea93720ab4 | 1072 | |
roger5641 | 0:c1ea93720ab4 | 1073 | for (int byte=0; byte<8; byte++) |
roger5641 | 0:c1ea93720ab4 | 1074 | { |
roger5641 | 0:c1ea93720ab4 | 1075 | ic[c_ic].configb.rx_data[byte] = read_buffer[byte+(8*current_ic)]; |
roger5641 | 0:c1ea93720ab4 | 1076 | } |
roger5641 | 0:c1ea93720ab4 | 1077 | calc_pec = pec15_calc(6,&read_buffer[8*current_ic]); |
roger5641 | 0:c1ea93720ab4 | 1078 | data_pec = read_buffer[7+(8*current_ic)] | (read_buffer[6+(8*current_ic)]<<8); |
roger5641 | 0:c1ea93720ab4 | 1079 | if (calc_pec != data_pec ) |
roger5641 | 0:c1ea93720ab4 | 1080 | { |
roger5641 | 0:c1ea93720ab4 | 1081 | ic[c_ic].configb.rx_pec_match = 1; |
roger5641 | 0:c1ea93720ab4 | 1082 | } |
roger5641 | 0:c1ea93720ab4 | 1083 | else ic[c_ic].configb.rx_pec_match = 0; |
roger5641 | 0:c1ea93720ab4 | 1084 | } |
roger5641 | 0:c1ea93720ab4 | 1085 | LTC681x_check_pec(total_ic,CFGRB,ic); |
roger5641 | 0:c1ea93720ab4 | 1086 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 1087 | } |
roger5641 | 0:c1ea93720ab4 | 1088 | |
roger5641 | 0:c1ea93720ab4 | 1089 | //Looks up the result pattern for digital filter self test |
roger5641 | 0:c1ea93720ab4 | 1090 | uint16_t LTC681x_st_lookup( |
roger5641 | 0:c1ea93720ab4 | 1091 | uint8_t MD, //ADC Mode |
roger5641 | 0:c1ea93720ab4 | 1092 | uint8_t ST //Self Test |
roger5641 | 0:c1ea93720ab4 | 1093 | ) |
roger5641 | 0:c1ea93720ab4 | 1094 | { |
roger5641 | 0:c1ea93720ab4 | 1095 | uint16_t test_pattern = 0; |
roger5641 | 0:c1ea93720ab4 | 1096 | if (MD == 1) |
roger5641 | 0:c1ea93720ab4 | 1097 | { |
roger5641 | 0:c1ea93720ab4 | 1098 | if (ST == 1) |
roger5641 | 0:c1ea93720ab4 | 1099 | { |
roger5641 | 0:c1ea93720ab4 | 1100 | test_pattern = 0x9565; |
roger5641 | 0:c1ea93720ab4 | 1101 | } |
roger5641 | 0:c1ea93720ab4 | 1102 | else |
roger5641 | 0:c1ea93720ab4 | 1103 | { |
roger5641 | 0:c1ea93720ab4 | 1104 | test_pattern = 0x6A9A; |
roger5641 | 0:c1ea93720ab4 | 1105 | } |
roger5641 | 0:c1ea93720ab4 | 1106 | } |
roger5641 | 0:c1ea93720ab4 | 1107 | else |
roger5641 | 0:c1ea93720ab4 | 1108 | { |
roger5641 | 0:c1ea93720ab4 | 1109 | if (ST == 1) |
roger5641 | 0:c1ea93720ab4 | 1110 | { |
roger5641 | 0:c1ea93720ab4 | 1111 | test_pattern = 0x9555; |
roger5641 | 0:c1ea93720ab4 | 1112 | } |
roger5641 | 0:c1ea93720ab4 | 1113 | else |
roger5641 | 0:c1ea93720ab4 | 1114 | { |
roger5641 | 0:c1ea93720ab4 | 1115 | test_pattern = 0x6AAA; |
roger5641 | 0:c1ea93720ab4 | 1116 | } |
roger5641 | 0:c1ea93720ab4 | 1117 | } |
roger5641 | 0:c1ea93720ab4 | 1118 | return(test_pattern); |
roger5641 | 0:c1ea93720ab4 | 1119 | } |
roger5641 | 0:c1ea93720ab4 | 1120 | |
roger5641 | 0:c1ea93720ab4 | 1121 | //Clears all of the DCC bits in the configuration registers |
roger5641 | 0:c1ea93720ab4 | 1122 | void clear_discharge(uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1123 | { |
roger5641 | 0:c1ea93720ab4 | 1124 | for (int i=0; i<total_ic; i++) |
roger5641 | 0:c1ea93720ab4 | 1125 | { |
roger5641 | 0:c1ea93720ab4 | 1126 | ic[i].config.tx_data[4] = 0; |
roger5641 | 0:c1ea93720ab4 | 1127 | ic[i].config.tx_data[5] = 0; |
roger5641 | 0:c1ea93720ab4 | 1128 | } |
roger5641 | 0:c1ea93720ab4 | 1129 | } |
roger5641 | 0:c1ea93720ab4 | 1130 | |
roger5641 | 0:c1ea93720ab4 | 1131 | // Runs the Digital Filter Self Test |
roger5641 | 0:c1ea93720ab4 | 1132 | int16_t LTC681x_run_cell_adc_st(uint8_t adc_reg,uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1133 | { |
roger5641 | 0:c1ea93720ab4 | 1134 | int16_t error = 0; |
roger5641 | 0:c1ea93720ab4 | 1135 | uint16_t expected_result = 0; |
roger5641 | 0:c1ea93720ab4 | 1136 | for (int self_test = 1; self_test<3; self_test++) |
roger5641 | 0:c1ea93720ab4 | 1137 | { |
roger5641 | 0:c1ea93720ab4 | 1138 | |
roger5641 | 0:c1ea93720ab4 | 1139 | expected_result = LTC681x_st_lookup(2,self_test); |
roger5641 | 0:c1ea93720ab4 | 1140 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1141 | switch (adc_reg) |
roger5641 | 0:c1ea93720ab4 | 1142 | { |
roger5641 | 0:c1ea93720ab4 | 1143 | case CELL: |
roger5641 | 0:c1ea93720ab4 | 1144 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1145 | LTC681x_clrcell(); |
roger5641 | 0:c1ea93720ab4 | 1146 | LTC681x_cvst(2,self_test); |
roger5641 | 0:c1ea93720ab4 | 1147 | LTC681x_pollAdc();//this isn't working |
roger5641 | 0:c1ea93720ab4 | 1148 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1149 | error = LTC681x_rdcv(0, total_ic,ic); |
roger5641 | 0:c1ea93720ab4 | 1150 | for (int cic = 0; cic < total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1151 | { |
roger5641 | 0:c1ea93720ab4 | 1152 | for (int channel=0; channel< ic[cic].ic_reg.cell_channels; channel++) |
roger5641 | 0:c1ea93720ab4 | 1153 | { |
roger5641 | 0:c1ea93720ab4 | 1154 | if (ic[cic].cells.c_codes[channel] != expected_result) |
roger5641 | 0:c1ea93720ab4 | 1155 | { |
roger5641 | 0:c1ea93720ab4 | 1156 | error = error+1; |
roger5641 | 0:c1ea93720ab4 | 1157 | } |
roger5641 | 0:c1ea93720ab4 | 1158 | } |
roger5641 | 0:c1ea93720ab4 | 1159 | } |
roger5641 | 0:c1ea93720ab4 | 1160 | break; |
roger5641 | 0:c1ea93720ab4 | 1161 | case AUX: |
roger5641 | 0:c1ea93720ab4 | 1162 | error = 0; |
roger5641 | 0:c1ea93720ab4 | 1163 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1164 | LTC681x_clraux(); |
roger5641 | 0:c1ea93720ab4 | 1165 | LTC681x_axst(2,self_test); |
roger5641 | 0:c1ea93720ab4 | 1166 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1167 | wait_ms(10); |
roger5641 | 0:c1ea93720ab4 | 1168 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1169 | LTC681x_rdaux(0, total_ic,ic); |
roger5641 | 0:c1ea93720ab4 | 1170 | for (int cic = 0; cic < total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1171 | { |
roger5641 | 0:c1ea93720ab4 | 1172 | for (int channel=0; channel< ic[cic].ic_reg.aux_channels; channel++) |
roger5641 | 0:c1ea93720ab4 | 1173 | { |
roger5641 | 0:c1ea93720ab4 | 1174 | if (ic[cic].aux.a_codes[channel] != expected_result) |
roger5641 | 0:c1ea93720ab4 | 1175 | { |
roger5641 | 0:c1ea93720ab4 | 1176 | error = error+1; |
roger5641 | 0:c1ea93720ab4 | 1177 | } |
roger5641 | 0:c1ea93720ab4 | 1178 | } |
roger5641 | 0:c1ea93720ab4 | 1179 | } |
roger5641 | 0:c1ea93720ab4 | 1180 | break; |
roger5641 | 0:c1ea93720ab4 | 1181 | case STAT: |
roger5641 | 0:c1ea93720ab4 | 1182 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1183 | LTC681x_clrstat(); |
roger5641 | 0:c1ea93720ab4 | 1184 | LTC681x_statst(2,self_test); |
roger5641 | 0:c1ea93720ab4 | 1185 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1186 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1187 | error = LTC681x_rdstat(0,total_ic,ic); |
roger5641 | 0:c1ea93720ab4 | 1188 | for (int cic = 0; cic < total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1189 | { |
roger5641 | 0:c1ea93720ab4 | 1190 | for (int channel=0; channel< ic[cic].ic_reg.stat_channels; channel++) |
roger5641 | 0:c1ea93720ab4 | 1191 | { |
roger5641 | 0:c1ea93720ab4 | 1192 | if (ic[cic].stat.stat_codes[channel] != expected_result) |
roger5641 | 0:c1ea93720ab4 | 1193 | { |
roger5641 | 0:c1ea93720ab4 | 1194 | error = error+1; |
roger5641 | 0:c1ea93720ab4 | 1195 | } |
roger5641 | 0:c1ea93720ab4 | 1196 | } |
roger5641 | 0:c1ea93720ab4 | 1197 | } |
roger5641 | 0:c1ea93720ab4 | 1198 | break; |
roger5641 | 0:c1ea93720ab4 | 1199 | |
roger5641 | 0:c1ea93720ab4 | 1200 | default: |
roger5641 | 0:c1ea93720ab4 | 1201 | error = -1; |
roger5641 | 0:c1ea93720ab4 | 1202 | break; |
roger5641 | 0:c1ea93720ab4 | 1203 | } |
roger5641 | 0:c1ea93720ab4 | 1204 | } |
roger5641 | 0:c1ea93720ab4 | 1205 | return(error); |
roger5641 | 0:c1ea93720ab4 | 1206 | } |
roger5641 | 0:c1ea93720ab4 | 1207 | |
roger5641 | 0:c1ea93720ab4 | 1208 | //runs the redundancy self test |
roger5641 | 0:c1ea93720ab4 | 1209 | int16_t LTC681x_run_adc_redundancy_st(uint8_t adc_mode, uint8_t adc_reg, uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1210 | { |
roger5641 | 0:c1ea93720ab4 | 1211 | int16_t error = 0; |
roger5641 | 0:c1ea93720ab4 | 1212 | for (int self_test = 1; self_test<3; self_test++) |
roger5641 | 0:c1ea93720ab4 | 1213 | { |
roger5641 | 0:c1ea93720ab4 | 1214 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1215 | switch (adc_reg) |
roger5641 | 0:c1ea93720ab4 | 1216 | { |
roger5641 | 0:c1ea93720ab4 | 1217 | case AUX: |
roger5641 | 0:c1ea93720ab4 | 1218 | LTC681x_clraux(); |
roger5641 | 0:c1ea93720ab4 | 1219 | LTC681x_adaxd(adc_mode,AUX_CH_ALL); |
roger5641 | 0:c1ea93720ab4 | 1220 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1221 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1222 | error = LTC681x_rdaux(0, total_ic,ic); |
roger5641 | 0:c1ea93720ab4 | 1223 | for (int cic = 0; cic < total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1224 | { |
roger5641 | 0:c1ea93720ab4 | 1225 | for (int channel=0; channel< ic[cic].ic_reg.aux_channels; channel++) |
roger5641 | 0:c1ea93720ab4 | 1226 | { |
roger5641 | 0:c1ea93720ab4 | 1227 | if (ic[cic].aux.a_codes[channel] >= 65280) |
roger5641 | 0:c1ea93720ab4 | 1228 | { |
roger5641 | 0:c1ea93720ab4 | 1229 | error = error+1; |
roger5641 | 0:c1ea93720ab4 | 1230 | } |
roger5641 | 0:c1ea93720ab4 | 1231 | } |
roger5641 | 0:c1ea93720ab4 | 1232 | } |
roger5641 | 0:c1ea93720ab4 | 1233 | break; |
roger5641 | 0:c1ea93720ab4 | 1234 | case STAT: |
roger5641 | 0:c1ea93720ab4 | 1235 | LTC681x_clrstat(); |
roger5641 | 0:c1ea93720ab4 | 1236 | LTC681x_adstatd(adc_mode,STAT_CH_ALL); |
roger5641 | 0:c1ea93720ab4 | 1237 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1238 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1239 | error = LTC681x_rdstat(0,total_ic,ic); |
roger5641 | 0:c1ea93720ab4 | 1240 | for (int cic = 0; cic < total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1241 | { |
roger5641 | 0:c1ea93720ab4 | 1242 | for (int channel=0; channel< ic[cic].ic_reg.stat_channels; channel++) |
roger5641 | 0:c1ea93720ab4 | 1243 | { |
roger5641 | 0:c1ea93720ab4 | 1244 | if (ic[cic].stat.stat_codes[channel] >= 65280) |
roger5641 | 0:c1ea93720ab4 | 1245 | { |
roger5641 | 0:c1ea93720ab4 | 1246 | error = error+1; |
roger5641 | 0:c1ea93720ab4 | 1247 | } |
roger5641 | 0:c1ea93720ab4 | 1248 | } |
roger5641 | 0:c1ea93720ab4 | 1249 | } |
roger5641 | 0:c1ea93720ab4 | 1250 | break; |
roger5641 | 0:c1ea93720ab4 | 1251 | |
roger5641 | 0:c1ea93720ab4 | 1252 | default: |
roger5641 | 0:c1ea93720ab4 | 1253 | error = -1; |
roger5641 | 0:c1ea93720ab4 | 1254 | break; |
roger5641 | 0:c1ea93720ab4 | 1255 | } |
roger5641 | 0:c1ea93720ab4 | 1256 | } |
roger5641 | 0:c1ea93720ab4 | 1257 | return(error); |
roger5641 | 0:c1ea93720ab4 | 1258 | } |
roger5641 | 0:c1ea93720ab4 | 1259 | |
roger5641 | 0:c1ea93720ab4 | 1260 | //Runs the datasheet algorithm for open wire |
roger5641 | 0:c1ea93720ab4 | 1261 | void LTC681x_run_openwire(uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1262 | { |
roger5641 | 0:c1ea93720ab4 | 1263 | uint16_t OPENWIRE_THRESHOLD = 4000; |
roger5641 | 0:c1ea93720ab4 | 1264 | const uint8_t N_CHANNELS = ic[0].ic_reg.cell_channels; |
roger5641 | 0:c1ea93720ab4 | 1265 | |
roger5641 | 0:c1ea93720ab4 | 1266 | cell_asic pullUp_cell_codes[total_ic]; |
roger5641 | 0:c1ea93720ab4 | 1267 | cell_asic pullDwn_cell_codes[total_ic]; |
roger5641 | 0:c1ea93720ab4 | 1268 | cell_asic openWire_delta[total_ic]; |
roger5641 | 0:c1ea93720ab4 | 1269 | int8_t error; |
roger5641 | 0:c1ea93720ab4 | 1270 | |
roger5641 | 0:c1ea93720ab4 | 1271 | wakeup_sleep(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1272 | LTC681x_adow(MD_7KHZ_3KHZ,PULL_UP_CURRENT); |
roger5641 | 0:c1ea93720ab4 | 1273 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1274 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1275 | LTC681x_adow(MD_7KHZ_3KHZ,PULL_UP_CURRENT); |
roger5641 | 0:c1ea93720ab4 | 1276 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1277 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1278 | error = LTC681x_rdcv(0, total_ic,pullUp_cell_codes); |
roger5641 | 0:c1ea93720ab4 | 1279 | |
roger5641 | 0:c1ea93720ab4 | 1280 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1281 | LTC681x_adow(MD_7KHZ_3KHZ,PULL_DOWN_CURRENT); |
roger5641 | 0:c1ea93720ab4 | 1282 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1283 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1284 | LTC681x_adow(MD_7KHZ_3KHZ,PULL_DOWN_CURRENT); |
roger5641 | 0:c1ea93720ab4 | 1285 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1286 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1287 | error = LTC681x_rdcv(0, total_ic,pullDwn_cell_codes); |
roger5641 | 0:c1ea93720ab4 | 1288 | |
roger5641 | 0:c1ea93720ab4 | 1289 | for (int cic=0; cic<total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1290 | { |
roger5641 | 0:c1ea93720ab4 | 1291 | ic[cic].system_open_wire =0; |
roger5641 | 0:c1ea93720ab4 | 1292 | for (int cell=0; cell<N_CHANNELS; cell++) |
roger5641 | 0:c1ea93720ab4 | 1293 | { |
roger5641 | 0:c1ea93720ab4 | 1294 | if (pullDwn_cell_codes[cic].cells.c_codes[cell]>pullUp_cell_codes[cic].cells.c_codes[cell]) |
roger5641 | 0:c1ea93720ab4 | 1295 | { |
roger5641 | 0:c1ea93720ab4 | 1296 | openWire_delta[cic].cells.c_codes[cell] = pullDwn_cell_codes[cic].cells.c_codes[cell] - pullUp_cell_codes[cic].cells.c_codes[cell] ; |
roger5641 | 0:c1ea93720ab4 | 1297 | } |
roger5641 | 0:c1ea93720ab4 | 1298 | else |
roger5641 | 0:c1ea93720ab4 | 1299 | { |
roger5641 | 0:c1ea93720ab4 | 1300 | openWire_delta[cic].cells.c_codes[cell] = 0; |
roger5641 | 0:c1ea93720ab4 | 1301 | } |
roger5641 | 0:c1ea93720ab4 | 1302 | |
roger5641 | 0:c1ea93720ab4 | 1303 | } |
roger5641 | 0:c1ea93720ab4 | 1304 | } |
roger5641 | 0:c1ea93720ab4 | 1305 | for (int cic=0; cic<total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1306 | { |
roger5641 | 0:c1ea93720ab4 | 1307 | for (int cell=1; cell<N_CHANNELS; cell++) |
roger5641 | 0:c1ea93720ab4 | 1308 | { |
roger5641 | 0:c1ea93720ab4 | 1309 | |
roger5641 | 0:c1ea93720ab4 | 1310 | if (openWire_delta[cic].cells.c_codes[cell]>OPENWIRE_THRESHOLD) |
roger5641 | 0:c1ea93720ab4 | 1311 | { |
roger5641 | 0:c1ea93720ab4 | 1312 | ic[cic].system_open_wire += (1<<cell); |
roger5641 | 0:c1ea93720ab4 | 1313 | |
roger5641 | 0:c1ea93720ab4 | 1314 | } |
roger5641 | 0:c1ea93720ab4 | 1315 | } |
roger5641 | 0:c1ea93720ab4 | 1316 | if (pullUp_cell_codes[cic].cells.c_codes[0] == 0) |
roger5641 | 0:c1ea93720ab4 | 1317 | { |
roger5641 | 0:c1ea93720ab4 | 1318 | ic[cic].system_open_wire += 1; |
roger5641 | 0:c1ea93720ab4 | 1319 | } |
roger5641 | 0:c1ea93720ab4 | 1320 | if (pullUp_cell_codes[cic].cells.c_codes[N_CHANNELS-1] == 0) |
roger5641 | 0:c1ea93720ab4 | 1321 | { |
roger5641 | 0:c1ea93720ab4 | 1322 | ic[cic].system_open_wire += (1<<(N_CHANNELS)); |
roger5641 | 0:c1ea93720ab4 | 1323 | } |
roger5641 | 0:c1ea93720ab4 | 1324 | } |
roger5641 | 0:c1ea93720ab4 | 1325 | } |
roger5641 | 0:c1ea93720ab4 | 1326 | |
roger5641 | 0:c1ea93720ab4 | 1327 | // Runs the ADC overlap test for the IC |
roger5641 | 0:c1ea93720ab4 | 1328 | uint16_t LTC681x_run_adc_overlap(uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1329 | { |
roger5641 | 0:c1ea93720ab4 | 1330 | uint16_t error = 0; |
roger5641 | 0:c1ea93720ab4 | 1331 | int32_t measure_delta =0; |
roger5641 | 0:c1ea93720ab4 | 1332 | int16_t failure_pos_limit = 20; |
roger5641 | 0:c1ea93720ab4 | 1333 | int16_t failure_neg_limit = -20; |
roger5641 | 0:c1ea93720ab4 | 1334 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1335 | LTC681x_adol(MD_7KHZ_3KHZ,DCP_DISABLED); |
roger5641 | 0:c1ea93720ab4 | 1336 | LTC681x_pollAdc(); |
roger5641 | 0:c1ea93720ab4 | 1337 | wakeup_idle(total_ic); |
roger5641 | 0:c1ea93720ab4 | 1338 | error = LTC681x_rdcv(0, total_ic,ic); |
roger5641 | 0:c1ea93720ab4 | 1339 | for (int cic = 0; cic<total_ic; cic++) |
roger5641 | 0:c1ea93720ab4 | 1340 | { |
roger5641 | 0:c1ea93720ab4 | 1341 | measure_delta = (int32_t)ic[cic].cells.c_codes[6]-(int32_t)ic[cic].cells.c_codes[7]; |
roger5641 | 0:c1ea93720ab4 | 1342 | if ((measure_delta>failure_pos_limit) || (measure_delta<failure_neg_limit)) |
roger5641 | 0:c1ea93720ab4 | 1343 | { |
roger5641 | 0:c1ea93720ab4 | 1344 | error = error | (1<<(cic-1)); |
roger5641 | 0:c1ea93720ab4 | 1345 | } |
roger5641 | 0:c1ea93720ab4 | 1346 | } |
roger5641 | 0:c1ea93720ab4 | 1347 | return(error); |
roger5641 | 0:c1ea93720ab4 | 1348 | } |
roger5641 | 0:c1ea93720ab4 | 1349 | |
roger5641 | 0:c1ea93720ab4 | 1350 | //Helper function that increments PEC counters |
roger5641 | 0:c1ea93720ab4 | 1351 | void LTC681x_check_pec(uint8_t total_ic,uint8_t reg, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1352 | { |
roger5641 | 0:c1ea93720ab4 | 1353 | switch (reg) |
roger5641 | 0:c1ea93720ab4 | 1354 | { |
roger5641 | 0:c1ea93720ab4 | 1355 | case CFGR: |
roger5641 | 0:c1ea93720ab4 | 1356 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1357 | { |
roger5641 | 0:c1ea93720ab4 | 1358 | ic[current_ic].crc_count.pec_count = ic[current_ic].crc_count.pec_count + ic[current_ic].config.rx_pec_match; |
roger5641 | 0:c1ea93720ab4 | 1359 | ic[current_ic].crc_count.cfgr_pec = ic[current_ic].crc_count.cfgr_pec + ic[current_ic].config.rx_pec_match; |
roger5641 | 0:c1ea93720ab4 | 1360 | } |
roger5641 | 0:c1ea93720ab4 | 1361 | break; |
roger5641 | 0:c1ea93720ab4 | 1362 | |
roger5641 | 0:c1ea93720ab4 | 1363 | case CFGRB: |
roger5641 | 0:c1ea93720ab4 | 1364 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1365 | { |
roger5641 | 0:c1ea93720ab4 | 1366 | ic[current_ic].crc_count.pec_count = ic[current_ic].crc_count.pec_count + ic[current_ic].configb.rx_pec_match; |
roger5641 | 0:c1ea93720ab4 | 1367 | ic[current_ic].crc_count.cfgr_pec = ic[current_ic].crc_count.cfgr_pec + ic[current_ic].configb.rx_pec_match; |
roger5641 | 0:c1ea93720ab4 | 1368 | } |
roger5641 | 0:c1ea93720ab4 | 1369 | break; |
roger5641 | 0:c1ea93720ab4 | 1370 | case CELL: |
roger5641 | 0:c1ea93720ab4 | 1371 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1372 | { |
roger5641 | 0:c1ea93720ab4 | 1373 | for (int i=0; i<ic[0].ic_reg.num_cv_reg; i++) |
roger5641 | 0:c1ea93720ab4 | 1374 | { |
roger5641 | 0:c1ea93720ab4 | 1375 | ic[current_ic].crc_count.pec_count = ic[current_ic].crc_count.pec_count + ic[current_ic].cells.pec_match[i]; |
roger5641 | 0:c1ea93720ab4 | 1376 | ic[current_ic].crc_count.cell_pec[i] = ic[current_ic].crc_count.cell_pec[i] + ic[current_ic].cells.pec_match[i]; |
roger5641 | 0:c1ea93720ab4 | 1377 | } |
roger5641 | 0:c1ea93720ab4 | 1378 | } |
roger5641 | 0:c1ea93720ab4 | 1379 | break; |
roger5641 | 0:c1ea93720ab4 | 1380 | case AUX: |
roger5641 | 0:c1ea93720ab4 | 1381 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1382 | { |
roger5641 | 0:c1ea93720ab4 | 1383 | for (int i=0; i<ic[0].ic_reg.num_gpio_reg; i++) |
roger5641 | 0:c1ea93720ab4 | 1384 | { |
roger5641 | 0:c1ea93720ab4 | 1385 | ic[current_ic].crc_count.pec_count = ic[current_ic].crc_count.pec_count + (ic[current_ic].aux.pec_match[i]); |
roger5641 | 0:c1ea93720ab4 | 1386 | ic[current_ic].crc_count.aux_pec[i] = ic[current_ic].crc_count.aux_pec[i] + (ic[current_ic].aux.pec_match[i]); |
roger5641 | 0:c1ea93720ab4 | 1387 | } |
roger5641 | 0:c1ea93720ab4 | 1388 | } |
roger5641 | 0:c1ea93720ab4 | 1389 | |
roger5641 | 0:c1ea93720ab4 | 1390 | break; |
roger5641 | 0:c1ea93720ab4 | 1391 | case STAT: |
roger5641 | 0:c1ea93720ab4 | 1392 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1393 | { |
roger5641 | 0:c1ea93720ab4 | 1394 | |
roger5641 | 0:c1ea93720ab4 | 1395 | for (int i=0; i<ic[0].ic_reg.num_stat_reg-1; i++) |
roger5641 | 0:c1ea93720ab4 | 1396 | { |
roger5641 | 0:c1ea93720ab4 | 1397 | ic[current_ic].crc_count.pec_count = ic[current_ic].crc_count.pec_count + ic[current_ic].stat.pec_match[i]; |
roger5641 | 0:c1ea93720ab4 | 1398 | ic[current_ic].crc_count.stat_pec[i] = ic[current_ic].crc_count.stat_pec[i] + ic[current_ic].stat.pec_match[i]; |
roger5641 | 0:c1ea93720ab4 | 1399 | } |
roger5641 | 0:c1ea93720ab4 | 1400 | } |
roger5641 | 0:c1ea93720ab4 | 1401 | break; |
roger5641 | 0:c1ea93720ab4 | 1402 | default: |
roger5641 | 0:c1ea93720ab4 | 1403 | break; |
roger5641 | 0:c1ea93720ab4 | 1404 | } |
roger5641 | 0:c1ea93720ab4 | 1405 | } |
roger5641 | 0:c1ea93720ab4 | 1406 | |
roger5641 | 0:c1ea93720ab4 | 1407 | //Helper Function to reset PEC counters |
roger5641 | 0:c1ea93720ab4 | 1408 | void LTC681x_reset_crc_count(uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1409 | { |
roger5641 | 0:c1ea93720ab4 | 1410 | for (int current_ic = 0 ; current_ic < total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1411 | { |
roger5641 | 0:c1ea93720ab4 | 1412 | ic[current_ic].crc_count.pec_count = 0; |
roger5641 | 0:c1ea93720ab4 | 1413 | ic[current_ic].crc_count.cfgr_pec = 0; |
roger5641 | 0:c1ea93720ab4 | 1414 | for (int i=0; i<6; i++) |
roger5641 | 0:c1ea93720ab4 | 1415 | { |
roger5641 | 0:c1ea93720ab4 | 1416 | ic[current_ic].crc_count.cell_pec[i]=0; |
roger5641 | 0:c1ea93720ab4 | 1417 | |
roger5641 | 0:c1ea93720ab4 | 1418 | } |
roger5641 | 0:c1ea93720ab4 | 1419 | for (int i=0; i<4; i++) |
roger5641 | 0:c1ea93720ab4 | 1420 | { |
roger5641 | 0:c1ea93720ab4 | 1421 | ic[current_ic].crc_count.aux_pec[i]=0; |
roger5641 | 0:c1ea93720ab4 | 1422 | } |
roger5641 | 0:c1ea93720ab4 | 1423 | for (int i=0; i<2; i++) |
roger5641 | 0:c1ea93720ab4 | 1424 | { |
roger5641 | 0:c1ea93720ab4 | 1425 | ic[current_ic].crc_count.stat_pec[i]=0; |
roger5641 | 0:c1ea93720ab4 | 1426 | } |
roger5641 | 0:c1ea93720ab4 | 1427 | } |
roger5641 | 0:c1ea93720ab4 | 1428 | } |
roger5641 | 0:c1ea93720ab4 | 1429 | |
roger5641 | 0:c1ea93720ab4 | 1430 | //Helper function to intialize CFG variables. |
roger5641 | 0:c1ea93720ab4 | 1431 | void LTC681x_init_cfg(uint8_t total_ic, cell_asic ic[]) |
roger5641 | 0:c1ea93720ab4 | 1432 | { |
roger5641 | 0:c1ea93720ab4 | 1433 | bool REFON = true; |
roger5641 | 0:c1ea93720ab4 | 1434 | bool ADCOPT = false; |
roger5641 | 0:c1ea93720ab4 | 1435 | bool gpioBits[5] = {true,true,true,true,true}; |
roger5641 | 0:c1ea93720ab4 | 1436 | bool dccBits[12] = {false,false,false,false,false,false,false,false,false,false,false,false}; |
roger5641 | 0:c1ea93720ab4 | 1437 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1438 | { |
roger5641 | 0:c1ea93720ab4 | 1439 | for (int j =0; j<6; j++) |
roger5641 | 0:c1ea93720ab4 | 1440 | { |
roger5641 | 0:c1ea93720ab4 | 1441 | ic[current_ic].config.tx_data[j] = 0; |
roger5641 | 0:c1ea93720ab4 | 1442 | ic[current_ic].configb.tx_data[j] = 0; |
roger5641 | 0:c1ea93720ab4 | 1443 | } |
roger5641 | 0:c1ea93720ab4 | 1444 | LTC681x_set_cfgr(current_ic ,ic,REFON,ADCOPT,gpioBits,dccBits); |
roger5641 | 0:c1ea93720ab4 | 1445 | |
roger5641 | 0:c1ea93720ab4 | 1446 | } |
roger5641 | 0:c1ea93720ab4 | 1447 | } |
roger5641 | 0:c1ea93720ab4 | 1448 | |
roger5641 | 0:c1ea93720ab4 | 1449 | //Helper function to set CFGR variable |
roger5641 | 0:c1ea93720ab4 | 1450 | void LTC681x_set_cfgr(uint8_t nIC, cell_asic ic[], bool refon, bool adcopt, bool gpio[5],bool dcc[12]) |
roger5641 | 0:c1ea93720ab4 | 1451 | { |
roger5641 | 0:c1ea93720ab4 | 1452 | LTC681x_set_cfgr_refon(nIC,ic,refon); |
roger5641 | 0:c1ea93720ab4 | 1453 | LTC681x_set_cfgr_adcopt(nIC,ic,adcopt); |
roger5641 | 0:c1ea93720ab4 | 1454 | LTC681x_set_cfgr_gpio(nIC,ic,gpio); |
roger5641 | 0:c1ea93720ab4 | 1455 | LTC681x_set_cfgr_dis(nIC,ic,dcc); |
roger5641 | 0:c1ea93720ab4 | 1456 | } |
roger5641 | 0:c1ea93720ab4 | 1457 | |
roger5641 | 0:c1ea93720ab4 | 1458 | //Helper function to set the REFON bit |
roger5641 | 0:c1ea93720ab4 | 1459 | void LTC681x_set_cfgr_refon(uint8_t nIC, cell_asic ic[], bool refon) |
roger5641 | 0:c1ea93720ab4 | 1460 | { |
roger5641 | 0:c1ea93720ab4 | 1461 | if (refon) ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0]|0x04; |
roger5641 | 0:c1ea93720ab4 | 1462 | else ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0]&0xFB; |
roger5641 | 0:c1ea93720ab4 | 1463 | } |
roger5641 | 0:c1ea93720ab4 | 1464 | |
roger5641 | 0:c1ea93720ab4 | 1465 | //Helper function to set the adcopt bit |
roger5641 | 0:c1ea93720ab4 | 1466 | void LTC681x_set_cfgr_adcopt(uint8_t nIC, cell_asic ic[], bool adcopt) |
roger5641 | 0:c1ea93720ab4 | 1467 | { |
roger5641 | 0:c1ea93720ab4 | 1468 | if (adcopt) ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0]|0x01; |
roger5641 | 0:c1ea93720ab4 | 1469 | else ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0]&0xFE; |
roger5641 | 0:c1ea93720ab4 | 1470 | } |
roger5641 | 0:c1ea93720ab4 | 1471 | |
roger5641 | 0:c1ea93720ab4 | 1472 | //Helper function to set GPIO bits |
roger5641 | 0:c1ea93720ab4 | 1473 | void LTC681x_set_cfgr_gpio(uint8_t nIC, cell_asic ic[],bool gpio[5]) |
roger5641 | 0:c1ea93720ab4 | 1474 | { |
roger5641 | 0:c1ea93720ab4 | 1475 | for (int i =0; i<5; i++) |
roger5641 | 0:c1ea93720ab4 | 1476 | { |
roger5641 | 0:c1ea93720ab4 | 1477 | if (gpio[i])ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0]|(0x01<<(i+3)); |
roger5641 | 0:c1ea93720ab4 | 1478 | else ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0]&(~(0x01<<(i+3))); |
roger5641 | 0:c1ea93720ab4 | 1479 | } |
roger5641 | 0:c1ea93720ab4 | 1480 | } |
roger5641 | 0:c1ea93720ab4 | 1481 | |
roger5641 | 0:c1ea93720ab4 | 1482 | //Helper function to control discharge |
roger5641 | 0:c1ea93720ab4 | 1483 | void LTC681x_set_cfgr_dis(uint8_t nIC, cell_asic ic[],bool dcc[12]) |
roger5641 | 0:c1ea93720ab4 | 1484 | { |
roger5641 | 0:c1ea93720ab4 | 1485 | for (int i =0; i<8; i++) |
roger5641 | 0:c1ea93720ab4 | 1486 | { |
roger5641 | 0:c1ea93720ab4 | 1487 | if (dcc[i])ic[nIC].config.tx_data[4] = ic[nIC].config.tx_data[4]|(0x01<<i); |
roger5641 | 0:c1ea93720ab4 | 1488 | else ic[nIC].config.tx_data[4] = ic[nIC].config.tx_data[4]& (~(0x01<<i)); |
roger5641 | 0:c1ea93720ab4 | 1489 | } |
roger5641 | 0:c1ea93720ab4 | 1490 | for (int i =0; i<4; i++) |
roger5641 | 0:c1ea93720ab4 | 1491 | { |
roger5641 | 0:c1ea93720ab4 | 1492 | if (dcc[i+8])ic[nIC].config.tx_data[5] = ic[nIC].config.tx_data[5]|(0x01<<i); |
roger5641 | 0:c1ea93720ab4 | 1493 | else ic[nIC].config.tx_data[5] = ic[nIC].config.tx_data[5]&(~(0x01<<i)); |
roger5641 | 0:c1ea93720ab4 | 1494 | } |
roger5641 | 0:c1ea93720ab4 | 1495 | } |
roger5641 | 0:c1ea93720ab4 | 1496 | |
roger5641 | 0:c1ea93720ab4 | 1497 | //Helper Function to set uv value in CFG register |
roger5641 | 0:c1ea93720ab4 | 1498 | void LTC681x_set_cfgr_uv(uint8_t nIC, cell_asic ic[],uint16_t uv) |
roger5641 | 0:c1ea93720ab4 | 1499 | { |
roger5641 | 0:c1ea93720ab4 | 1500 | uint16_t tmp = (uv/16)-1; |
roger5641 | 0:c1ea93720ab4 | 1501 | ic[nIC].config.tx_data[1] = 0x00FF & tmp; |
roger5641 | 0:c1ea93720ab4 | 1502 | ic[nIC].config.tx_data[2] = ic[nIC].config.tx_data[2]&0xF0; |
roger5641 | 0:c1ea93720ab4 | 1503 | ic[nIC].config.tx_data[2] = ic[nIC].config.tx_data[2]|((0x0F00 & tmp)>>8); |
roger5641 | 0:c1ea93720ab4 | 1504 | } |
roger5641 | 0:c1ea93720ab4 | 1505 | |
roger5641 | 0:c1ea93720ab4 | 1506 | //helper function to set OV value in CFG register |
roger5641 | 0:c1ea93720ab4 | 1507 | void LTC681x_set_cfgr_ov(uint8_t nIC, cell_asic ic[],uint16_t ov) |
roger5641 | 0:c1ea93720ab4 | 1508 | { |
roger5641 | 0:c1ea93720ab4 | 1509 | uint16_t tmp = (ov/16); |
roger5641 | 0:c1ea93720ab4 | 1510 | ic[nIC].config.tx_data[3] = 0x00FF & (tmp>>4); |
roger5641 | 0:c1ea93720ab4 | 1511 | ic[nIC].config.tx_data[2] = ic[nIC].config.tx_data[2]&0x0F; |
roger5641 | 0:c1ea93720ab4 | 1512 | ic[nIC].config.tx_data[2] = ic[nIC].config.tx_data[2]|((0x000F & tmp)<<4); |
roger5641 | 0:c1ea93720ab4 | 1513 | } |
roger5641 | 0:c1ea93720ab4 | 1514 | |
roger5641 | 0:c1ea93720ab4 | 1515 | //Writes the comm register |
roger5641 | 0:c1ea93720ab4 | 1516 | void LTC681x_wrcomm(uint8_t total_ic, //The number of ICs being written to |
roger5641 | 0:c1ea93720ab4 | 1517 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 1518 | ) |
roger5641 | 0:c1ea93720ab4 | 1519 | { |
roger5641 | 0:c1ea93720ab4 | 1520 | uint8_t cmd[2]= {0x07 , 0x21}; |
roger5641 | 0:c1ea93720ab4 | 1521 | uint8_t write_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 1522 | uint8_t write_count = 0; |
roger5641 | 0:c1ea93720ab4 | 1523 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 1524 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1525 | { |
roger5641 | 0:c1ea93720ab4 | 1526 | if (ic->isospi_reverse == true) |
roger5641 | 0:c1ea93720ab4 | 1527 | { |
roger5641 | 0:c1ea93720ab4 | 1528 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 1529 | } |
roger5641 | 0:c1ea93720ab4 | 1530 | else |
roger5641 | 0:c1ea93720ab4 | 1531 | { |
roger5641 | 0:c1ea93720ab4 | 1532 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1533 | } |
roger5641 | 0:c1ea93720ab4 | 1534 | |
roger5641 | 0:c1ea93720ab4 | 1535 | for (uint8_t data = 0; data<6; data++) |
roger5641 | 0:c1ea93720ab4 | 1536 | { |
roger5641 | 0:c1ea93720ab4 | 1537 | write_buffer[write_count] = ic[c_ic].com.tx_data[data]; |
roger5641 | 0:c1ea93720ab4 | 1538 | write_count++; |
roger5641 | 0:c1ea93720ab4 | 1539 | } |
roger5641 | 0:c1ea93720ab4 | 1540 | } |
roger5641 | 0:c1ea93720ab4 | 1541 | write_68(total_ic, cmd, write_buffer); |
roger5641 | 0:c1ea93720ab4 | 1542 | } |
roger5641 | 0:c1ea93720ab4 | 1543 | |
roger5641 | 0:c1ea93720ab4 | 1544 | /* |
roger5641 | 0:c1ea93720ab4 | 1545 | Reads COMM registers of a LTC6811 daisy chain |
roger5641 | 0:c1ea93720ab4 | 1546 | */ |
roger5641 | 0:c1ea93720ab4 | 1547 | int8_t LTC681x_rdcomm(uint8_t total_ic, //Number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 1548 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 1549 | ) |
roger5641 | 0:c1ea93720ab4 | 1550 | { |
roger5641 | 0:c1ea93720ab4 | 1551 | uint8_t cmd[2]= {0x07 , 0x22}; |
roger5641 | 0:c1ea93720ab4 | 1552 | uint8_t read_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 1553 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 1554 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 1555 | uint16_t calc_pec; |
roger5641 | 0:c1ea93720ab4 | 1556 | uint8_t c_ic=0; |
roger5641 | 0:c1ea93720ab4 | 1557 | pec_error = read_68(total_ic, cmd, read_buffer); |
roger5641 | 0:c1ea93720ab4 | 1558 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1559 | { |
roger5641 | 0:c1ea93720ab4 | 1560 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 1561 | { |
roger5641 | 0:c1ea93720ab4 | 1562 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 1563 | } |
roger5641 | 0:c1ea93720ab4 | 1564 | else |
roger5641 | 0:c1ea93720ab4 | 1565 | { |
roger5641 | 0:c1ea93720ab4 | 1566 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1567 | } |
roger5641 | 0:c1ea93720ab4 | 1568 | |
roger5641 | 0:c1ea93720ab4 | 1569 | for (int byte=0; byte<8; byte++) |
roger5641 | 0:c1ea93720ab4 | 1570 | { |
roger5641 | 0:c1ea93720ab4 | 1571 | ic[c_ic].com.rx_data[byte] = read_buffer[byte+(8*current_ic)]; |
roger5641 | 0:c1ea93720ab4 | 1572 | } |
roger5641 | 0:c1ea93720ab4 | 1573 | calc_pec = pec15_calc(6,&read_buffer[8*current_ic]); |
roger5641 | 0:c1ea93720ab4 | 1574 | data_pec = read_buffer[7+(8*current_ic)] | (read_buffer[6+(8*current_ic)]<<8); |
roger5641 | 0:c1ea93720ab4 | 1575 | if (calc_pec != data_pec ) |
roger5641 | 0:c1ea93720ab4 | 1576 | { |
roger5641 | 0:c1ea93720ab4 | 1577 | ic[c_ic].com.rx_pec_match = 1; |
roger5641 | 0:c1ea93720ab4 | 1578 | } |
roger5641 | 0:c1ea93720ab4 | 1579 | else ic[c_ic].com.rx_pec_match = 0; |
roger5641 | 0:c1ea93720ab4 | 1580 | } |
roger5641 | 0:c1ea93720ab4 | 1581 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 1582 | } |
roger5641 | 0:c1ea93720ab4 | 1583 | |
roger5641 | 0:c1ea93720ab4 | 1584 | /* |
roger5641 | 0:c1ea93720ab4 | 1585 | Shifts data in COMM register out over LTC6811 SPI/I2C port |
roger5641 | 0:c1ea93720ab4 | 1586 | */ |
roger5641 | 0:c1ea93720ab4 | 1587 | void LTC681x_stcomm() |
roger5641 | 0:c1ea93720ab4 | 1588 | { |
roger5641 | 0:c1ea93720ab4 | 1589 | |
roger5641 | 0:c1ea93720ab4 | 1590 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 1591 | uint16_t cmd_pec; |
roger5641 | 0:c1ea93720ab4 | 1592 | |
roger5641 | 0:c1ea93720ab4 | 1593 | cmd[0] = 0x07; |
roger5641 | 0:c1ea93720ab4 | 1594 | cmd[1] = 0x23; |
roger5641 | 0:c1ea93720ab4 | 1595 | cmd_pec = pec15_calc(2, cmd); |
roger5641 | 0:c1ea93720ab4 | 1596 | cmd[2] = (uint8_t)(cmd_pec >> 8); |
roger5641 | 0:c1ea93720ab4 | 1597 | cmd[3] = (uint8_t)(cmd_pec); |
roger5641 | 0:c1ea93720ab4 | 1598 | |
roger5641 | 0:c1ea93720ab4 | 1599 | CS_PIN = 0; |
roger5641 | 0:c1ea93720ab4 | 1600 | spi_write_array(4,cmd); |
roger5641 | 0:c1ea93720ab4 | 1601 | for (int i = 0; i<9; i++) |
roger5641 | 0:c1ea93720ab4 | 1602 | { |
roger5641 | 0:c1ea93720ab4 | 1603 | spi_read_byte(0xFF); |
roger5641 | 0:c1ea93720ab4 | 1604 | } |
roger5641 | 0:c1ea93720ab4 | 1605 | CS_PIN = 1; |
roger5641 | 0:c1ea93720ab4 | 1606 | |
roger5641 | 0:c1ea93720ab4 | 1607 | } |
roger5641 | 0:c1ea93720ab4 | 1608 | |
roger5641 | 0:c1ea93720ab4 | 1609 | // Writes the pwm register |
roger5641 | 0:c1ea93720ab4 | 1610 | void LTC681x_wrpwm(uint8_t total_ic, |
roger5641 | 0:c1ea93720ab4 | 1611 | uint8_t pwmReg, |
roger5641 | 0:c1ea93720ab4 | 1612 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 1613 | ) |
roger5641 | 0:c1ea93720ab4 | 1614 | { |
roger5641 | 0:c1ea93720ab4 | 1615 | uint8_t cmd[2]; |
roger5641 | 0:c1ea93720ab4 | 1616 | uint8_t write_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 1617 | uint8_t write_count = 0; |
roger5641 | 0:c1ea93720ab4 | 1618 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 1619 | if (pwmReg == 0) |
roger5641 | 0:c1ea93720ab4 | 1620 | { |
roger5641 | 0:c1ea93720ab4 | 1621 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 1622 | cmd[1] = 0x20; |
roger5641 | 0:c1ea93720ab4 | 1623 | } |
roger5641 | 0:c1ea93720ab4 | 1624 | else |
roger5641 | 0:c1ea93720ab4 | 1625 | { |
roger5641 | 0:c1ea93720ab4 | 1626 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 1627 | cmd[1] = 0x1C; |
roger5641 | 0:c1ea93720ab4 | 1628 | } |
roger5641 | 0:c1ea93720ab4 | 1629 | |
roger5641 | 0:c1ea93720ab4 | 1630 | for (uint8_t current_ic = 0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1631 | { |
roger5641 | 0:c1ea93720ab4 | 1632 | if (ic->isospi_reverse == true) |
roger5641 | 0:c1ea93720ab4 | 1633 | { |
roger5641 | 0:c1ea93720ab4 | 1634 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 1635 | } |
roger5641 | 0:c1ea93720ab4 | 1636 | else |
roger5641 | 0:c1ea93720ab4 | 1637 | { |
roger5641 | 0:c1ea93720ab4 | 1638 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1639 | } |
roger5641 | 0:c1ea93720ab4 | 1640 | for (uint8_t data = 0; data<6; data++) |
roger5641 | 0:c1ea93720ab4 | 1641 | { |
roger5641 | 0:c1ea93720ab4 | 1642 | write_buffer[write_count] = ic[c_ic].pwm.tx_data[data]; |
roger5641 | 0:c1ea93720ab4 | 1643 | write_count++; |
roger5641 | 0:c1ea93720ab4 | 1644 | } |
roger5641 | 0:c1ea93720ab4 | 1645 | } |
roger5641 | 0:c1ea93720ab4 | 1646 | write_68(total_ic, cmd, write_buffer); |
roger5641 | 0:c1ea93720ab4 | 1647 | } |
roger5641 | 0:c1ea93720ab4 | 1648 | |
roger5641 | 0:c1ea93720ab4 | 1649 | |
roger5641 | 0:c1ea93720ab4 | 1650 | /* |
roger5641 | 0:c1ea93720ab4 | 1651 | Reads pwm registers of a LTC6811 daisy chain |
roger5641 | 0:c1ea93720ab4 | 1652 | */ |
roger5641 | 0:c1ea93720ab4 | 1653 | int8_t LTC681x_rdpwm(uint8_t total_ic, //Number of ICs in the system |
roger5641 | 0:c1ea93720ab4 | 1654 | uint8_t pwmReg, |
roger5641 | 0:c1ea93720ab4 | 1655 | cell_asic ic[] |
roger5641 | 0:c1ea93720ab4 | 1656 | ) |
roger5641 | 0:c1ea93720ab4 | 1657 | { |
roger5641 | 0:c1ea93720ab4 | 1658 | const uint8_t BYTES_IN_REG = 8; |
roger5641 | 0:c1ea93720ab4 | 1659 | |
roger5641 | 0:c1ea93720ab4 | 1660 | uint8_t cmd[4]; |
roger5641 | 0:c1ea93720ab4 | 1661 | uint8_t read_buffer[256]; |
roger5641 | 0:c1ea93720ab4 | 1662 | int8_t pec_error = 0; |
roger5641 | 0:c1ea93720ab4 | 1663 | uint16_t data_pec; |
roger5641 | 0:c1ea93720ab4 | 1664 | uint16_t calc_pec; |
roger5641 | 0:c1ea93720ab4 | 1665 | uint8_t c_ic = 0; |
roger5641 | 0:c1ea93720ab4 | 1666 | |
roger5641 | 0:c1ea93720ab4 | 1667 | if (pwmReg == 0) |
roger5641 | 0:c1ea93720ab4 | 1668 | { |
roger5641 | 0:c1ea93720ab4 | 1669 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 1670 | cmd[1] = 0x22; |
roger5641 | 0:c1ea93720ab4 | 1671 | } |
roger5641 | 0:c1ea93720ab4 | 1672 | else |
roger5641 | 0:c1ea93720ab4 | 1673 | { |
roger5641 | 0:c1ea93720ab4 | 1674 | cmd[0] = 0x00; |
roger5641 | 0:c1ea93720ab4 | 1675 | cmd[1] = 0x1E; |
roger5641 | 0:c1ea93720ab4 | 1676 | } |
roger5641 | 0:c1ea93720ab4 | 1677 | |
roger5641 | 0:c1ea93720ab4 | 1678 | |
roger5641 | 0:c1ea93720ab4 | 1679 | pec_error = read_68(total_ic, cmd, read_buffer); |
roger5641 | 0:c1ea93720ab4 | 1680 | for (uint8_t current_ic =0; current_ic<total_ic; current_ic++) |
roger5641 | 0:c1ea93720ab4 | 1681 | { |
roger5641 | 0:c1ea93720ab4 | 1682 | if (ic->isospi_reverse == false) |
roger5641 | 0:c1ea93720ab4 | 1683 | { |
roger5641 | 0:c1ea93720ab4 | 1684 | c_ic = current_ic; |
roger5641 | 0:c1ea93720ab4 | 1685 | } |
roger5641 | 0:c1ea93720ab4 | 1686 | else |
roger5641 | 0:c1ea93720ab4 | 1687 | { |
roger5641 | 0:c1ea93720ab4 | 1688 | c_ic = total_ic - current_ic - 1; |
roger5641 | 0:c1ea93720ab4 | 1689 | } |
roger5641 | 0:c1ea93720ab4 | 1690 | for (int byte=0; byte<8; byte++) |
roger5641 | 0:c1ea93720ab4 | 1691 | { |
roger5641 | 0:c1ea93720ab4 | 1692 | ic[c_ic].pwm.rx_data[byte] = read_buffer[byte+(8*current_ic)]; |
roger5641 | 0:c1ea93720ab4 | 1693 | } |
roger5641 | 0:c1ea93720ab4 | 1694 | calc_pec = pec15_calc(6,&read_buffer[8*current_ic]); |
roger5641 | 0:c1ea93720ab4 | 1695 | data_pec = read_buffer[7+(8*current_ic)] | (read_buffer[6+(8*current_ic)]<<8); |
roger5641 | 0:c1ea93720ab4 | 1696 | if (calc_pec != data_pec ) |
roger5641 | 0:c1ea93720ab4 | 1697 | { |
roger5641 | 0:c1ea93720ab4 | 1698 | ic[c_ic].pwm.rx_pec_match = 1; |
roger5641 | 0:c1ea93720ab4 | 1699 | } |
roger5641 | 0:c1ea93720ab4 | 1700 | else ic[c_ic].pwm.rx_pec_match = 0; |
roger5641 | 0:c1ea93720ab4 | 1701 | } |
roger5641 | 0:c1ea93720ab4 | 1702 | return(pec_error); |
roger5641 | 0:c1ea93720ab4 | 1703 | } |