KT/LFP_48V_mBMS_FW
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
c52dc2f348e0b58d3526bc55a5d67fef38759ada
LFP_48V_mBMS_FW/APP_R3323/App/Hardware/ltc6813.c

949 lines
27 KiB
C
Raw Blame History

/*! LTC6813: Multicell Battery Monitors
*
*@verbatim
*The LTC6813 is multicell battery stack monitor that measures up to 18 series
*connected battery cells with a total measurement error of less than 2.2mV.
*The cell measurement range of 0V to 5V makes the LTC6813 suitable for most
*battery chemistries. All 18 cell voltages can be captured in 290uS, and lower
*data acquisition rates can be selected for high noise reduction.
*Using the LTC6813-1, multiple devices are connected in a daisy-chain with one
*host processor connection for all devices, permitting simultaneous cell monitoring
*of long, high voltage battery strings.
*@endverbatim
*
* https://www.analog.com/en/products/ltc6813-1.html
* https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/dc2350a-b.html
*
*********************************************************************************
* Copyright 2019(c) Analog Devices, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Analog Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* - The use of this software may or may not infringe the patent rights
* of one or more patent holders. This license does not release you
* from the requirement that you obtain separate licenses from these
* patent holders to use this software.
* - Use of the software either in source or binary form, must be run
* on or directly connected to an Analog Devices Inc. component.
*
* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
//! @ingroup BMS
//! @{
//! @defgroup LTC6813-1 LTC6813-1: Multicell Battery Monitor
//! @}
/*! @file
@ingroup LTC6813-1
Library for LTC6813-1 Multicell Battery Monitor
*/
#include <includes.h>
#include "stdint.h"
#include "spi.h"
#include "LTC681x.h"
#include "LTC6813.h"
#include "delay.h"
//Helper function to initialize register limits.
void LTC6813_init_reg_limits(uint8_t total_ic, cell_asic *ic)
{
for (uint8_t cic = 0; cic < total_ic; cic++)
{
ic[cic].ic_reg.cell_channels = 18;
ic[cic].ic_reg.stat_channels = 4;
ic[cic].ic_reg.aux_channels = 9;
ic[cic].ic_reg.num_cv_reg = 6;
ic[cic].ic_reg.num_gpio_reg = 4;
ic[cic].ic_reg.num_stat_reg = 2;
}
}
//Helper function to initialize CFG variables.
void LTC6813_init_cfg(uint8_t total_ic, cell_asic *ic)
{
bool REFON = true;
bool ADCOPT = false;
uint8_t gpioBits = 0x1F; // {true, true, true, true, true};
uint16_t dccBits = 0;
for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++)
{
for (int j =0; j < 6; j++)
{
ic[current_ic].config.tx_data[j] = 0;
ic[current_ic].configb.tx_data[j] = 0;
}
LTC6813_set_cfgr(current_ic , ic, REFON, ADCOPT, gpioBits, dccBits, 0, 0, 0);
}
}
//Helper function to set CFGR variable
void LTC6813_set_cfgr(uint8_t nIC, cell_asic *ic, bool refon, bool adcopt, uint8_t gpio, uint16_t dcc, uint8_t dcto, uint16_t uv, uint16_t ov)
{
LTC6813_set_cfgr_refon (nIC, ic, refon );
LTC6813_set_cfgr_adcopt(nIC, ic, adcopt);
LTC6813_set_cfgr_gpio (nIC, ic, gpio );
LTC6813_set_cfgr_dis (nIC, ic, dcc );
LTC6813_set_cfgr_dcto (nIC, ic, dcto );
LTC6813_set_cfgr_uv (nIC, ic, uv );
LTC6813_set_cfgr_ov (nIC, ic, ov );
}
//Helper function to set the REFON bit
void LTC6813_set_cfgr_refon(uint8_t nIC, cell_asic *ic, bool refon)
{
if (refon) ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0] | 0x04;
else ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0] & 0xFB;
}
//Helper function to set the adcopt bit
void LTC6813_set_cfgr_adcopt(uint8_t nIC, cell_asic *ic, bool adcopt)
{
if (adcopt) ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0] | 0x01;
else ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0] & 0xFE;
}
//Helper function to set GPIO bits
void LTC6813_set_cfgr_gpio(uint8_t nIC, cell_asic *ic, uint8_t gpio)
{
for (int i = 0; i < 5; i++)
{
if ((gpio >> i) & 0x01) ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0] | ( 0x01 << (i + 3));
else ic[nIC].config.tx_data[0] = ic[nIC].config.tx_data[0] & (~(0x01 << (i + 3)));
}
}
//Helper function to control discharge
void LTC6813_set_cfgr_dis(uint8_t nIC, cell_asic *ic, uint16_t dcc)
{
for (int i = 0; i < 8; i++)
{
if ((dcc >> i) & 0x0001) ic[nIC].config.tx_data[4] = ic[nIC].config.tx_data[4] | (0x01 << i);
else ic[nIC].config.tx_data[4] = ic[nIC].config.tx_data[4] & (~(0x01 << i));
}
for (int i = 0; i < 4; i++)
{
if ((dcc >> (8 + i)) & 0x0001) ic[nIC].config.tx_data[5] = ic[nIC].config.tx_data[5] | (0x01 << i);
else ic[nIC].config.tx_data[5] = ic[nIC].config.tx_data[5] & (~(0x01 << i));
}
}
//Helper Function to set dcto value in CFG register
void LTC6813_set_cfgr_dcto(uint8_t nIC, cell_asic *ic, uint8_t dcto)
{
ic[nIC].config.tx_data[5] &= 0x0F;
ic[nIC].config.tx_data[5] |= (uint8_t)((dcto << 4) & 0xF0);
}
//Helper Function to set uv value in CFG register
void LTC6813_set_cfgr_uv(uint8_t nIC, cell_asic *ic,uint16_t uv)
{
ic[nIC].config.tx_data[1] = (uint8_t)((uv >> 0) & 0xFF);
ic[nIC].config.tx_data[2] &= 0xF0;
ic[nIC].config.tx_data[2] |= (uint8_t)((uv >> 8) & 0x0F);
}
//Helper function to set OV value in CFG register
void LTC6813_set_cfgr_ov(uint8_t nIC, cell_asic *ic, uint16_t ov)
{
ic[nIC].config.tx_data[2] &= 0x0F;
ic[nIC].config.tx_data[2] |= (uint8_t)((ov << 4) & 0xF0);
ic[nIC].config.tx_data[3] = (uint8_t)((ov >> 4) & 0xFF);
}
/***************************** CFGRB *********************************/
//Helper Function to initialize the CFGRB data structures
void LTC6813_init_cfgb(uint8_t total_ic,cell_asic *ic)
{
for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++)
{
for(int j = 0; j < 6; j++)
{
ic[current_ic].configb.tx_data[j] = 0;
}
}
}
//Helper Function to set the configuration register B
void LTC6813_set_cfgrb(uint8_t nIC, cell_asic *ic, bool fdrf, bool dtmen, bool ps[2], uint8_t gpiobits, uint16_t dccbits)
{
LTC6813_set_cfgrb_fdrf (nIC, ic, fdrf);
LTC6813_set_cfgrb_dtmen (nIC, ic, dtmen);
LTC6813_set_cfgrb_ps (nIC, ic, ps);
LTC6813_set_cfgrb_gpio_b(nIC, ic, gpiobits);
LTC6813_set_cfgrb_dcc_b (nIC, ic, dccbits);
}
//Helper function to set the FDRF bit
void LTC6813_set_cfgrb_fdrf(uint8_t nIC, cell_asic *ic, bool fdrf)
{
if(fdrf) ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1]|0x40;
else ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1]&0xBF;
}
//Helper function to set the DTMEN bit
void LTC6813_set_cfgrb_dtmen(uint8_t nIC, cell_asic *ic, bool dtmen)
{
if(dtmen) ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1]|0x08;
else ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1]&0xF7;
}
//Helper function to set the PATH SELECT bit
void LTC6813_set_cfgrb_ps(uint8_t nIC, cell_asic *ic, bool ps[])
{
for(int i =0;i<2;i++)
{
if(ps[i])ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1]|(0x01<<(i+4));
else ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1]&(~(0x01<<(i+4)));
}
}
// Helper function to set the gpio bits in configb b register
void LTC6813_set_cfgrb_gpio_b(uint8_t nIC, cell_asic *ic, uint8_t gpiobits)
{
for (int i = 0; i < 4; i++)
{
if ((gpiobits >> 1) & 0x01) ic[nIC].configb.tx_data[0] = ic[nIC].configb.tx_data[0] | ( 0x01 << i);
else ic[nIC].configb.tx_data[0] = ic[nIC].configb.tx_data[0] & (~(0x01 << i));
}
}
// Helper function to set the dcc bits in configb b register
void LTC6813_set_cfgrb_dcc_b(uint8_t nIC, cell_asic *ic, uint16_t dccbits)
{
for (int i = 0; i < 7; i++)
{
if (i < 4)
{
// DCC 13, 14, 15, 16
if ((dccbits >> i) & 0x0001) ic[nIC].configb.tx_data[0] = ic[nIC].configb.tx_data[0] | (0x01 << (i + 4));
else ic[nIC].configb.tx_data[0] = ic[nIC].configb.tx_data[0] & (~(0x01 << (i + 4)));
}
if (i >= 4 && i < 6)
{
if ((dccbits >> i) & 0x0001) ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1] | (0x01 << (i - 4));
else ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1] & (~(0x01 << (i - 4)));
}
if (i == 6)
{
if ((dccbits >> i) & 0x0001) ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1] | 0x04;
else ic[nIC].configb.tx_data[1] = ic[nIC].configb.tx_data[1] & (~0x04); //0xFB;
}
}
}
/*
This command will write the configuration registers of the LTC6813-1s
connected in a daisy chain stack. The configuration is written in descending
order so the last device's configuration is written first.
*/
void LTC6813_wrcfg(uint8_t total_ic, //The number of ICs being written to
cell_asic *ic //A two dimensional array of the configuration data that will be written
)
{
LTC681x_wrcfg(total_ic,ic);
}
/*
This command will write the configuration b registers of the LTC6813-1s
connected in a daisy chain stack. The configuration is written in descending
order so the last device's configuration is written first.
*/
void LTC6813_wrcfgb(uint8_t total_ic, //The number of ICs being written to
cell_asic *ic //A two dimensional array of the configuration data that will be written
)
{
LTC681x_wrcfgb(total_ic, ic);
}
// Reads configuration registers of a LTC6813 daisy chain
int8_t LTC6813_rdcfg(uint8_t total_ic, //Number of ICs in the system
cell_asic *ic //A two dimensional array that the function stores the read configuration data.
)
{
uint8_t cmd[2] = {0x00, 0x02};
uint8_t read_buffer[10];
int8_t pec_error = 0;
uint16_t data_pec;
uint16_t calc_pec;
uint8_t c_ic = 0;
pec_error = read_68(total_ic, cmd, read_buffer);
for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++)
{
if (ic->isospi_reverse == false)
{
c_ic = current_ic;
}
else
{
c_ic = total_ic - current_ic - 1;
}
for (int byte = 0; byte < 8; byte++)
{
ic[c_ic].config.rx_data[byte] = read_buffer[byte+(8*current_ic)];
}
calc_pec = pec15_calc(6,&read_buffer[8*current_ic]);
data_pec = read_buffer[7+(8*current_ic)] | (read_buffer[6+(8*current_ic)]<<8);
if (calc_pec != data_pec )
{
ic[c_ic].config.rx_pec_match = 1;
}
else ic[c_ic].config.rx_pec_match = 0;
}
LTC681x_check_pec(total_ic,CFGR,ic);
return(pec_error);
}
//Reads configuration b registers of a LTC6813 daisy chain
int8_t LTC6813_rdcfgb(uint8_t total_ic, //Number of ICs in the system
cell_asic *ic //A two dimensional array that the function stores the read configuration data.
)
{
uint8_t cmd[2]= {0x00 , 0x26};
uint8_t read_buffer[256];
int8_t pec_error = 0;
uint16_t data_pec;
uint16_t calc_pec;
uint8_t c_ic = 0;
pec_error = read_68(total_ic, cmd, read_buffer);
for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++)
{
if (ic->isospi_reverse == false)
{
c_ic = current_ic;
}
else
{
c_ic = total_ic - current_ic - 1;
}
for (int byte = 0; byte < 8; byte++)
{
ic[c_ic].configb.rx_data[byte] = read_buffer[byte + (8 * current_ic)];
}
calc_pec = pec15_calc(6, &read_buffer[8 * current_ic]);
data_pec = read_buffer[7 + (8 * current_ic)] | (read_buffer[6 + (8 * current_ic)] << 8);
if (calc_pec != data_pec )
{
ic[c_ic].configb.rx_pec_match = 1;
}
else ic[c_ic].configb.rx_pec_match = 0;
}
LTC681x_check_pec(total_ic,CFGR,ic);
return(pec_error);
}
//Starts cell voltage conversion
void LTC6813_adcv(uint8_t MD, //ADC Mode
uint8_t DCP, //Discharge Permit
uint8_t CH //Cell Channels to be measured
)
{
uint8_t cmd[4];
uint8_t md_bits;
md_bits = (MD & 0x02) >> 1;
cmd[0] = md_bits + 0x02;
md_bits = (MD & 0x01) << 7;
cmd[1] = md_bits + 0x60 + (DCP << 4) + CH;
cmd_68(cmd);
}
// Reads and parses the LTC6813 cell voltage registers.
uint8_t LTC6813_rdcv(uint8_t reg, // Controls which cell voltage register is read back.
uint8_t total_ic, // the number of ICs in the system
cell_asic *ic // Array of the parsed cell codes
)
{
int8_t pec_error = 0;
pec_error = LTC681x_rdcv(reg,total_ic,ic);
return(pec_error);
}
//Start a GPIO and Vref2 Conversion
void LTC6813_adax(uint8_t MD, //ADC Mode
uint8_t CHG //GPIO Channels to be measured)
)
{
uint8_t cmd[4];
uint8_t md_bits;
md_bits = (MD & 0x02) >> 1;
cmd[0] = md_bits + 0x04;
md_bits = (MD & 0x01) << 7;
cmd[1] = md_bits + 0x60 + CHG ;
cmd_68(cmd);
}
/*
The function is used
to read the parsed GPIO codes of the LTC6813. This function will send the requested
read commands parse the data and store the gpio voltages in aux_codes variable
*/
int8_t LTC6813_rdaux(uint8_t reg, //Determines which GPIO voltage register is read back.
uint8_t total_ic,//the number of ICs in the system
cell_asic *ic//A two dimensional array of the gpio voltage codes.
)
{
uint8_t *data;
int8_t pec_error = 0;
uint8_t c_ic =0;
data = (uint8_t *) malloc((NUM_RX_BYT * total_ic) * sizeof(uint8_t));
if (reg == 0)
{
for (uint8_t gpio_reg = 1; gpio_reg < ic[0].ic_reg.num_gpio_reg + 1; gpio_reg++) //executes once for each of the LTC6813 aux voltage registers
{
LTC681x_rdaux_reg(gpio_reg, total_ic, data); //Reads the raw auxiliary register data into the data[] array
for (int current_ic = 0; current_ic < total_ic; current_ic++)
{
if (ic->isospi_reverse == false)
{
c_ic = current_ic;
}
else
{
c_ic = total_ic - current_ic - 1;
}
pec_error = parse_auxs(current_ic, gpio_reg, data,
&ic[c_ic].aux.a_codes[0],
&ic[c_ic].aux.pec_match[0]);
}
}
}
else
{
LTC681x_rdaux_reg(reg, total_ic, data);
for (int current_ic = 0; current_ic<total_ic; current_ic++)
{
if (ic->isospi_reverse == false)
{
c_ic = current_ic;
}
else
{
c_ic = total_ic - current_ic - 1;
}
pec_error = parse_cells(current_ic,reg, data,
&ic[c_ic].aux.a_codes[0],
&ic[c_ic].aux.pec_match[0]);
}
}
LTC681x_check_pec(total_ic,AUX,ic);
free(data);
return (pec_error);
}
//Start a Status ADC Conversion
void LTC6813_adstat(uint8_t MD, //ADC Mode
uint8_t CHST //GPIO Channels to be measured
)
{
LTC681x_adstat(MD,CHST);
}
/*
Reads and parses the LTC6813 stat registers.
The function is used
to read the parsed stat codes of the LTC6813. This function will send the requested
read commands parse the data and store the stat voltages in stat_codes variable
*/
int8_t LTC6813_rdstat(uint8_t reg, //Determines which Stat register is read back.
uint8_t total_ic,//the number of ICs in the system
cell_asic *ic
)
{
int8_t pec_error = 0;
pec_error = LTC681x_rdstat(reg,total_ic,ic);
return (pec_error);
}
// Starts cell voltage and GPIO 1&2 conversion
void LTC6813_adcvax(uint8_t MD, //ADC Mode
uint8_t DCP //Discharge Permit
)
{
// LTC681x_adcvax(MD,DCP);
}
//Starts cell voltage and SOC conversion
void LTC6813_adcvsc( uint8_t MD, //ADC Mode
uint8_t DCP //Discharge Permit
)
{
// LTC681x_adcvsc(MD,DCP);
}
//Starts the Mux Decoder diagnostic self test
void LTC6813_diagn()
{
LTC681x_diagn();
}
//Starts cell voltage self test conversion
void LTC6813_cvst(uint8_t MD, //ADC Mode
uint8_t ST //Self Test
)
{
LTC681x_cvst(MD,ST);
}
//Start an Auxiliary Register Self Test Conversion
void LTC6813_axst(uint8_t MD, //ADC Mode
uint8_t ST //Self Test
)
{
LTC681x_axst(MD,ST);
}
//Start a Status Register Self Test Conversion
void LTC6813_statst(uint8_t MD, //ADC Mode
uint8_t ST //Self Test
)
{
LTC681x_statst(MD,ST);
}
// Runs the Digital Filter Self Test
int16_t LTC6813_run_cell_adc_st(uint8_t adc_reg,uint8_t total_ic, cell_asic *ic,uint8_t md,bool adcopt)
{
int16_t error = 0;
// error = LTC681x_run_cell_adc_st(adc_reg,total_ic,ic,md,adcopt);
return(error);
}
//Starts cell voltage overlap conversion
void LTC6813_adol(uint8_t MD, //ADC Mode
uint8_t DCP //Discharge Permit
)
{
LTC681x_adol(MD,DCP);
}
// Runs the ADC overlap test for the IC
uint16_t LTC6813_run_adc_overlap(uint8_t total_ic, cell_asic *ic)
{
uint16_t error = 0;
int32_t measure_delta =0;
int16_t failure_pos_limit = 20;
int16_t failure_neg_limit = -20;
uint32_t conv_time=0;
wakeup_idle(total_ic);
LTC681x_adol(MD_7KHZ_3KHZ, DCP_DISABLED);
conv_time = LTC6813_pollAdc();
conv_time = conv_time;
wakeup_idle(total_ic);
error = LTC681x_rdcv(0, total_ic,ic);
for (int cic = 0; cic<total_ic; cic++)
{
measure_delta = (int32_t)ic[cic].cells.c_codes[6]-(int32_t)ic[cic].cells.c_codes[7];
if ((measure_delta>failure_pos_limit) || (measure_delta<failure_neg_limit))
{
error = error | (1<<(cic-1));
}
measure_delta = (int32_t)ic[cic].cells.c_codes[12]-(int32_t)ic[cic].cells.c_codes[13];
if ((measure_delta>failure_pos_limit) || (measure_delta<failure_neg_limit))
{
error = error | (1<<(cic-1));
}
}
return(error);
}
//Start GPIOs open wire ADC conversion
void LTC6813_axow(uint8_t MD, //ADC Mode
uint8_t PUP //Discharge Permit
)
{
// LTC681x_axow(MD, PUP);
}
// Start an open wire Conversion
void LTC6813_adow(uint8_t MD,uint8_t PUP,uint8_t CH,uint8_t DCP)
{
// LTC681x_adow(MD,PUP,CH,DCP);
}
//Runs open wire for GPIOs
void LTC6813_run_gpio_openwire(uint8_t total_ic,
cell_asic *ic
)
{
// LTC681x_run_gpio_openwire(total_ic, ic);
}
//Runs the data sheet algorithm for open wire for single cell detection
void LTC6813_run_openwire_single(uint8_t total_ic, cell_asic *ic)
{
// LTC681x_run_openwire_single(total_ic, ic);
}
//Runs the data sheet algorithm for open wire for multiple cell and two consecutive cells detection
void LTC6813_run_openwire_multi(uint8_t total_ic, cell_asic *ic)
{
// LTC681x_run_openwire_multi( total_ic, ic);
}
//Start an GPIO Redundancy test
void LTC6813_adaxd(uint8_t MD, //ADC Mode
uint8_t CHG //GPIO Channels to be measured)
)
{
LTC681x_adaxd(MD,CHG);
}
// Start a Status register redundancy test Conversion
void LTC6813_adstatd(uint8_t MD, //ADC Mode
uint8_t CHST //GPIO Channels to be measured
)
{
LTC681x_adstatd(MD,CHST);
}
//Runs the redundancy self test
int16_t LTC6813_run_adc_redundancy_st(uint8_t adc_mode, uint8_t adc_reg, uint8_t total_ic, cell_asic *ic)
{
int16_t error = 0;
LTC681x_run_adc_redundancy_st(adc_mode,adc_reg,total_ic,ic);
return(error);
}
//Sends the poll ADC command
uint8_t LTC6813_pladc()
{
// return(LTC681x_pladc());
return(0);
}
//This function will block operation until the ADC has finished it's conversion
uint32_t LTC6813_pollAdc()
{
uint32_t counter = 0;
uint8_t finished = 0;
uint8_t current_time = 0;
uint8_t cmd[4];
uint16_t cmd_pec;
cmd[0] = 0x07;
cmd[1] = 0x14;
cmd_pec = pec15_calc(2, cmd);
cmd[2] = (uint8_t)(cmd_pec >> 8);
cmd[3] = (uint8_t)(cmd_pec);
CS_PIN_LOW();
spi_write_array(4,cmd);
while ((counter < 200000) && (finished == 0))
{
current_time = spi_read_byte(0xff);
if (current_time > 0)
finished = 1;
else
counter = counter + 10;
delay_os_ms(1);
}
CS_PIN_HIGH();
return(counter);
}
/*
The command clears the cell voltage registers and initializes
all values to 1. The register will read back hexadecimal 0xFF
after the command is sent.
*/
void LTC6813_clrcell()
{
LTC681x_clrcell();
}
/*
The command clears the Auxiliary registers and initializes
all values to 1. The register will read back hexadecimal 0xFF
after the command is sent.
*/
void LTC6813_clraux()
{
LTC681x_clraux();
}
/*
The command clears the Stat registers and initializes
all values to 1. The register will read back hexadecimal 0xFF
after the command is sent.
*/
void LTC6813_clrstat()
{
LTC681x_clrstat();
}
//Writes the pwm registers of a LTC6813 daisy chain
void LTC6813_wrpwm(uint8_t total_ic,
uint8_t pwmReg, //The number of ICs being written to
cell_asic *ic //A two dimensional array of the configuration data that will be written
)
{
// LTC681x_wrpwm(total_ic,pwmReg,ic);
}
//Reads pwm registers of a LTC6813 daisy chain
int8_t LTC6813_rdpwm(uint8_t total_ic, //Number of ICs in the system
uint8_t pwmReg,
cell_asic *ic //A two dimensional array that the function stores the read configuration data.
)
{
int8_t pec_error =0;
// pec_error = LTC681x_rdpwm(total_ic,pwmReg,ic);
return(pec_error);
}
//Writes data in S control register the ltc6813-1 connected in a daisy chain stack.
void LTC6813_wrsctrl(uint8_t total_ic, //< number of ICs in the daisy chain
uint8_t sctrl_reg,
cell_asic *ic
)
{
// LTC681x_wrsctrl(total_ic, sctrl_reg, ic);
}
// Reads sctrl registers of a ltc6812 daisy chain
int8_t LTC6813_rdsctrl(uint8_t total_ic, //< number of ICs in the daisy chain
uint8_t sctrl_reg,
cell_asic *ic //< a two dimensional array that the function stores the read pwm data
)
{
// LTC681x_rdsctrl( total_ic, sctrl_reg,ic );
return 0;
}
/* Start Sctrl data communication
This command will start the sctrl pulse communication over the spins
*/
void LTC6813_stsctrl()
{
// LTC681x_stsctrl();
}
/*
The command clears the Sctrl registers and initializes
all values to 0. The register will read back hexadecimal 0x00
after the command is sent.
*/
void LTC6813_clrsctrl()
{
// LTC681x_clrsctrl();
}
//Writes the COMM registers of a LTC6813 daisy chain
void LTC6813_wrcomm(uint8_t total_ic, //The number of ICs being written to
cell_asic *ic //A two dimensional array of the comm data that will be written
)
{
// LTC681x_wrcomm(total_ic,ic);
}
// Reads COMM registers of a LTC6813 daisy chain
int8_t LTC6813_rdcomm(uint8_t total_ic, //Number of ICs in the system
cell_asic *ic //A two dimensional array that the function stores the read configuration data.
)
{
int8_t pec_error = 0;
// LTC681x_rdcomm(total_ic, ic);
return(pec_error);
}
// Shifts data in COMM register out over LTC6813 SPI/I2C port
void LTC6813_stcomm()
{
// LTC681x_stcomm();
}
//Helper function to set discharge bit in CFG register
void LTC6813_set_discharge(int Cell, uint8_t total_ic, cell_asic *ic)
{
for (int i=0; i<total_ic; i++)
{
if (Cell==0)
{
ic[i].configb.tx_data[1] = ic[i].configb.tx_data[1] |(0x04);
}
else if (Cell<9)
{
ic[i].config.tx_data[4] = ic[i].config.tx_data[4] | (1<<(Cell-1));
}
else if (Cell < 13)
{
ic[i].config.tx_data[5] = ic[i].config.tx_data[5] | (1<<(Cell-9));
}
else if (Cell<17)
{
ic[i].configb.tx_data[0] = ic[i].configb.tx_data[0] | (1<<(Cell-9));
}
else if (Cell<19)
{
ic[i].configb.tx_data[1] = ic[i].configb.tx_data[1] | (1<<(Cell-17));
}
else
{
break;
}
}
}
//Clears all of the DCC bits in the configuration registers
void LTC6813_clear_discharge(uint8_t total_ic,
cell_asic *ic)
{
// LTC681x_clear_discharge(total_ic,ic);
}
//Helper function that increments PEC counters
void LTC6813_check_pec(uint8_t total_ic,uint8_t reg, cell_asic *ic)
{
LTC681x_check_pec(total_ic,reg,ic);
}
//Helper Function to reset PEC counters
void LTC6813_reset_crc_count(uint8_t total_ic, cell_asic *ic)
{
LTC681x_reset_crc_count(total_ic,ic);
}
// Write the 6813 PWM/S ctrl Register B
void LTC6813_wrpsb(uint8_t total_ic,cell_asic *ic)
{
uint8_t cmd[2];
uint8_t write_buffer[256];
uint8_t c_ic = 0;
cmd[0] = 0x00;
cmd[1] = 0x1C;
for(uint8_t current_ic = 0; current_ic<total_ic;current_ic++)
{
if(ic->isospi_reverse == true){c_ic = current_ic;}
else{c_ic = total_ic - current_ic - 1;}
write_buffer[0] = ic[c_ic].pwmb.tx_data[0];
write_buffer[1] = ic[c_ic].pwmb.tx_data[1];
write_buffer[2]= ic[c_ic].pwmb.tx_data[2];
write_buffer[3] = ic[c_ic].sctrlb.tx_data[3];
write_buffer[4] = ic[c_ic].sctrlb.tx_data[4];
write_buffer[5]= ic[c_ic].sctrlb.tx_data[5];
}
write_68(total_ic, cmd, write_buffer);
}
//Reading pwm/s control register b
uint8_t LTC6813_rdpsb(uint8_t total_ic, //< number of ICs in the daisy chain
cell_asic *ic //< a two dimensional array that the function stores the read pwm data
)
{
uint8_t cmd[4];
uint8_t read_buffer[256];
int8_t pec_error = 0;
uint16_t data_pec;
uint16_t calc_pec;
uint8_t c_ic = 0;
cmd[0] = 0x00;
cmd[1] = 0x1E;
pec_error = read_68(total_ic, cmd, read_buffer);
for(uint8_t current_ic =0; current_ic<total_ic; current_ic++)
{
if(ic->isospi_reverse == false){c_ic = current_ic;}
else{c_ic = total_ic - current_ic - 1;}
for(int byte=0; byte<3;byte++)
{
ic[c_ic].pwmb.rx_data[byte] = read_buffer[byte+(8*current_ic)];
}
for(int byte=3; byte<6;byte++)
{
ic[c_ic].sctrlb.rx_data[byte] = read_buffer[byte+(8*current_ic)];
}
for(int byte=6; byte<8;byte++)
{
ic[c_ic].pwmb.rx_data[byte] = read_buffer[byte+(8*current_ic)];
ic[c_ic].sctrlb.rx_data[byte] = read_buffer[byte+(8*current_ic)];
}
calc_pec = pec15_calc(6,&read_buffer[8*current_ic]);
data_pec = read_buffer[7+(8*current_ic)] | (read_buffer[6+(8*current_ic)]<<8);
if(calc_pec != data_pec )
{
ic[c_ic].pwmb.rx_pec_match = 1;
ic[c_ic].sctrlb.rx_pec_match = 1;
}
else
{
ic[c_ic].pwmb.rx_pec_match = 0;
ic[c_ic].sctrlb.rx_pec_match = 0;
}
}
return(pec_error);
}
//Mutes the LTC6813 discharge transistors
void LTC6813_mute()
{
uint8_t cmd[2];
cmd[0] = 0x00;
cmd[1] = 0x28;
cmd_68(cmd);
}
//Clears the LTC6813 Mute Discharge
void LTC6813_unmute()
{
uint8_t cmd[2];
cmd[0] = 0x00;
cmd[1] = 0x29;
cmd_68(cmd);
}
Reference in New Issue View Git Blame Copy Permalink