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updated for STM driver compatability
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dyl committed Oct 25, 2023
1 parent fb6c67f commit cfdecfd
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Showing 2 changed files with 66 additions and 54 deletions.
14 changes: 10 additions & 4 deletions general/include/ltc68041.h
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Original file line number Diff line number Diff line change
Expand Up @@ -50,10 +50,19 @@ Copyright 2013 Linear Technology Corp. (LTC)
#ifndef LTC68041_H
#define LTC68041_H

#include "stm32f4xx_hal.h"
#include "stm32f4xx_hal_spi.h"

#define LTC_MAX_RETRIES 10
#define LTC_BAD_READ 0xFEEEEEEE

#include <nerduino.h>
typedef struct
{
SPI_HandleTypeDef *spi;
GPIO_TypeDef *gpio;
uint8_t cs_pin;

} ltc_config;

/*
Pre computed crc15 table used for the LTC6804 PEC calculation
Expand Down Expand Up @@ -182,9 +191,6 @@ static const unsigned int crc15Table[256] = {0x0,0xc599, 0xceab, 0xb32, 0xd8cf,
#define DCP_DISABLED 0
#define DCP_ENABLED 1

#define CS_PIN 10


void LTC6804_initialize();

void set_adc(uint8_t MD, uint8_t DCP, uint8_t CH, uint8_t CHG);
Expand Down
106 changes: 56 additions & 50 deletions general/src/ltc68041.c
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Original file line number Diff line number Diff line change
Expand Up @@ -68,9 +68,8 @@ Copyright 2013 Linear Technology Corp. (LTC)

#include <stdint.h>
#include "LTC68041.h"
#include <SPI.h>
#include <nerduino.h>

ltc_config *ltcconfig;
const SPISettings ltcSPISettings = SPISettings(1000000, MSBFIRST, SPI_MODE3);

/*!
Expand All @@ -88,10 +87,13 @@ uint8_t ADAX[2]; //!< GPIO conversion command.
the Normal ADC mode.
*/

void LTC6804_initialize()
void LTC6804_initialize(SPI_HandleTypeDef *hspi, GPIO_TypeDef *hgpio, uint8_t cs_pin)
{
NERduino.enableSPI1();
set_adc(MD_NORMAL,DCP_DISABLED,CELL_CH_ALL,AUX_CH_ALL);
ltcconfig->spi = hspi;
ltcconfig->gpio = hgpio;
ltcconfig->cs_pin = cs_pin;
// NERduino.enableSPI1();
// set_adc(MD_NORMAL,DCP_DISABLED,CELL_CH_ALL,AUX_CH_ALL);
}

/*!*******************************************************************************************************************
Expand Down Expand Up @@ -168,9 +170,9 @@ void LTC6804_adcv()
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake. This command can be removed.

//4
digitalWrite(SPI1_CS, LOW);
NERduino.writeSPI1(cmd, 4, ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);

}
/*
Expand Down Expand Up @@ -213,9 +215,9 @@ void LTC6804_adax()
cmd[3] = (uint8_t)(cmd_pec);

wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake. This command can be removed.
digitalWrite(SPI1_CS, LOW);
NERduino.writeSPI1(cmd, 4, ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);

}
/*
Expand Down Expand Up @@ -445,10 +447,10 @@ void LTC6804_rdcv_reg(uint8_t reg, //Determines which cell voltage register is r
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake. This command can be removed.

//4
digitalWrite(SPI1_CS, LOW);
NERduino.writereadSPI1(cmd,4,data,(REG_LEN*total_ic), ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);

HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
HAL_SPI_Receive(ltcconfig->spi, data, (REG_LEN*total_ic), HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}
/*
LTC6804_rdcv_reg Function Process:
Expand Down Expand Up @@ -685,9 +687,10 @@ void LTC6804_rdaux_reg(uint8_t reg, //Determines which GPIO voltage register is
//3
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake, this command can be removed.
//4
digitalWrite(SPI1_CS, LOW);
NERduino.writereadSPI1(cmd,4,data,(REG_LEN*total_ic), ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
HAL_SPI_Receive(ltcconfig->spi, data, (REG_LEN*total_ic), HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}
/*
LTC6804_rdaux_reg Function Process:
Expand Down Expand Up @@ -730,10 +733,13 @@ void LTC6804_clrcell()
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake. This command can be removed.

//4
digitalWrite(SPI1_CS, LOW);
NERduino.writereadSPI1(cmd,4,0,0, ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);

HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
//NOTE: prev iteration had write + read, but didnt read anything? unless im missing something no point in reading
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}

/*
LTC6804_clrcell Function sequence:
Expand Down Expand Up @@ -776,9 +782,10 @@ void LTC6804_clraux()
//3
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake.This command can be removed.
//4
digitalWrite(SPI1_CS, LOW);
NERduino.writereadSPI1(cmd,4,0,0, ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
//NOTE: prev iteration had write + read, but didnt read anything? unless im missing something no point in reading
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}
/*
LTC6804_clraux Function sequence:
Expand Down Expand Up @@ -860,9 +867,10 @@ void LTC6804_wrcfg(uint8_t total_ic, //The number of ICs being written to
//4
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake.This command can be removed.
//5
digitalWrite(SPI1_CS, LOW);
NERduino.writeSPI1(cmd, CMD_LEN, ltcSPISettings);
digitalWrite(SPI1_CS, HIGH);

HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, CMD_LEN, HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
free(cmd);
}
/*
Expand Down Expand Up @@ -930,9 +938,12 @@ int8_t LTC6804_rdcfg(uint8_t total_ic, //Number of ICs in the system
//2
wakeup_idle (); //This will guarantee that the LTC6804 isoSPI port is awake. This command can be removed.
//3
digitalWrite(SPI1_CS, LOW);
NERduino.writereadSPI1(cmd, 4, rx_data, (BYTES_IN_REG*total_ic), ltcSPISettings); //Read the configuration data of all ICs on the daisy chain into
digitalWrite(SPI1_CS, HIGH); //rx_data[] array
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
HAL_SPI_Receive(ltcconfig->spi, rx_data, (BYTES_IN_REG*total_ic), HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
//Read the configuration data of all ICs on the daisy chain into
//rx_data[] array
for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++) //executes for each LTC6804 in the daisy chain and packs the data
{
//into the r_config array as well as check the received Config data
Expand Down Expand Up @@ -978,9 +989,9 @@ int8_t LTC6804_rdcfg(uint8_t total_ic, //Number of ICs in the system
*****************************************************/
void wakeup_idle()
{
digitalWrite(SPI1_CS, LOW);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
delayMicroseconds(2); //Guarantees the isoSPI will be in ready mode
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}

/*!****************************************************
Expand All @@ -990,9 +1001,9 @@ void wakeup_idle()
*****************************************************/
void wakeup_sleep()
{
digitalWrite(SPI1_CS, LOW);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
delay(1); // Guarantees the LTC6804 will be in standby
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}
/*!**********************************************************
\brief calaculates and returns the CRC15
Expand Down Expand Up @@ -1055,9 +1066,10 @@ void write_68(uint8_t total_ic, //Number of ICs to be written to
}

wakeup_idle();
digitalWrite(SPI1_CS, LOW);
NERduino.writeSPI1(cmd, CMD_LEN, ltcSPISettings);
digitalWrite(SPI1_CS, HIGH); //this was originally low

HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, CMD_LEN, HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);

free(cmd);
}
Expand Down Expand Up @@ -1128,9 +1140,10 @@ int8_t read_68( uint8_t total_ic, // Number of ICs in the system
cmd[2] = (uint8_t)(cmd_pec >> 8);
cmd[3] = (uint8_t)(cmd_pec);

digitalWrite(SPI1_CS, LOW);
NERduino.writereadSPI1(cmd, 4, data, (BYTES_IN_REG*total_ic), ltcSPISettings); //Transmits the command and reads the configuration data of all ICs on the daisy chain into rx_data[] array
digitalWrite(SPI1_CS, HIGH);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(ltcconfig->spi, cmd, 4, HAL_MAX_DELAY);
HAL_SPI_Receieve(ltcconfig->spi, data, (BYTES_IN_REG*total_ic), HAL_MAX_DELAY);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);

for (uint8_t current_ic = 0; current_ic < total_ic; current_ic++) //Executes for each LTC681x in the daisy chain and packs the data
{ //into the rx_data array as well as check the received data for any bit errors
Expand Down Expand Up @@ -1165,19 +1178,12 @@ void LTC6804_stcomm(uint8_t len) //Length of data to be transmitted
cmd[3] = (uint8_t)(cmd_pec);

wakeup_idle();
digitalWrite(SPI1_CS, LOW);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_RESET);
NERduino.writeSPI1(cmd, 4, ltcSPISettings);
for (int i = 0; i<len*3; i++)
{
spi_read_byte(0xFF);
HAL_SPI_Transmit(ltcconfig->spi, 0xFF 1, HAL_MAX_DELAY);
}
digitalWrite(SPI1_CS, HIGH);
}

uint8_t spi_read_byte(uint8_t tx_dat)
{
uint8_t data;
data = (uint8_t)SPI.transfer(0xFF);
return(data);
HAL_GPIO_WritePin(ltcfonig->gpio, ltcconfig->cs_pin, GPIO_PIN_SET);
}

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