foxBMS - Unit Tests
1.2.1
The foxBMS Unit Tests API Documentation
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Driver for the MAX17841B ASCI and MAX1785x monitoring chip. More...
#include "mxm_17841b.h"
#include "mxm_41b_register_map.h"
#include "mxm_bitextract.h"
#include "os.h"
Go to the source code of this file.
Macros | |
#define | MXM_41B_BIT_SHIFT_HALF_BYTE (4u) |
#define | MXM_41B_BIT_MASK_LOW_NIBBLE (0xFu) |
#define | MXM_41B_BIT_MASK_HIGH_NIBBLE (0xF0u) |
#define | MXM_41B_BIT_MASK_ONE_BYTE (0xFFu) |
#define | MXM_41B_WAIT_COUNTER_THRESHOLD (75u) |
#define | MXM_41B_BRIDGE_RESET_TIME_MS (100u) |
#define | MXM_41B_CONFIG_REGISTER_LENGTH (7u) |
Functions | |
static STD_RETURN_TYPE_e | MXM_41BRegisterWrite (MXM_41B_INSTANCE_s *pInstance, MXM_41B_REG_ADD_t command, const uint8_t *const kpkPayload, uint8_t lengthPayload) |
Write one or multiple registers of MAX17841B. More... | |
static STD_RETURN_TYPE_e | MXM_41BRegisterRead (MXM_41B_INSTANCE_s *pInstance, MXM_41B_REG_ADD_t command, uint16_t *pRxBuffer, uint8_t length) |
Read one or multiple registers of MAX17841B. More... | |
static STD_RETURN_TYPE_e | MXM_41BConfigRegisterWrite (MXM_41B_INSTANCE_s *pInstance) |
Write the config register of MAX17841B. More... | |
static STD_RETURN_TYPE_e | MXM_41BBufferWrite (MXM_41B_INSTANCE_s *pInstance, const uint16_t *const kpkMessage, uint8_t messageLength, uint8_t extendMessage) |
Write a buffer transaction to MAX17841B. More... | |
static void | MXM_41BTransitionToIdleSuccess (MXM_41B_INSTANCE_s *pInstance) |
Transition into idle, mark as successfull. More... | |
static void | MXM_41BTransitionToIdleError (MXM_41B_INSTANCE_s *pInstance) |
Transition into idle, mark as an error occurred. More... | |
static void | MXM_41BInitializeRegisterCopies (MXM_41B_INSTANCE_s *pInstance) |
Reset register copies to default. More... | |
static void | MXM_41BStateHandlerInit (MXM_41B_INSTANCE_s *pInstance) |
init state handler More... | |
static void | MXM_41BStateHandlerGetVersion (MXM_41B_INSTANCE_s *pInstance) |
state handler for "get version" More... | |
static void | MXM_41BStateHandlerIdle (MXM_41B_INSTANCE_s *pInstance) |
state handler for "idle" More... | |
static void | MXM_41BStateHandlerWriteConfAndIntRegister (MXM_41B_INSTANCE_s *pInstance) |
state handler for "write conf and int register" More... | |
static void | MXM_41BStateHandlerReadStatusRegister (MXM_41B_INSTANCE_s *pInstance) |
state handler for "read status register" More... | |
static void | MXM_41BStateHandlerUartTransaction (MXM_41B_INSTANCE_s *pInstance) |
state handler for "uart transaction" More... | |
static void | MXM_41BStateHandlerCheckFmea (MXM_41B_INSTANCE_s *pInstance) |
state handler for "check fmea" More... | |
static void | MXM_41BStateHandlerClearReceiveBuffer (MXM_41B_INSTANCE_s *pInstance) |
state handler for "clear receive buffer" More... | |
static void | MXM_41BStateHandlerClearTransmitBuffer (MXM_41B_INSTANCE_s *pInstance) |
state handler for "clear transmit buffer" More... | |
STD_RETURN_TYPE_e | MXM_41BSetStateRequest (MXM_41B_INSTANCE_s *pInstance, MXM_STATEMACH_41B_e state, uint16_t *pPayload, uint8_t payloadLength, uint8_t extendMessageBytes, uint16_t *pRxBuffer, uint16_t rxBufferLength, MXM_41B_STATE_REQUEST_STATUS_e *processed) |
Set state transition for MAX17841B-state-machine. More... | |
STD_RETURN_TYPE_e | MXM_41BWriteRegisterFunction (MXM_41B_INSTANCE_s *pInstance, MXM_41B_REG_FUNCTION_e registerFunction, MXM_41B_REG_BIT_VALUE value) |
Write a register function. More... | |
STD_RETURN_TYPE_e | MXM_41BReadRegisterFunction (const MXM_41B_INSTANCE_s *const kpkInstance, MXM_41B_REG_FUNCTION_e registerFunction, MXM_41B_REG_BIT_VALUE *pValue) |
Read the value of a register function. More... | |
void | MXM_41BStateMachine (MXM_41B_INSTANCE_s *pInstance) |
Execute state-machine for the MAX17841B. More... | |
void | MXM_41BInitializeStateStruct (MXM_41B_INSTANCE_s *pInstance) |
Initializes the state struct with default values. More... | |
Driver for the MAX17841B ASCI and MAX1785x monitoring chip.
SPDX-License-Identifier: BSD-3-Clause
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def
Definition in file mxm_17841b.c.
#define MXM_41B_BIT_MASK_HIGH_NIBBLE (0xF0u) |
high nibble (of uint8_t) bit mask
Definition at line 71 of file mxm_17841b.c.
#define MXM_41B_BIT_MASK_LOW_NIBBLE (0xFu) |
low nibble (of uint8_t) bit mask
Definition at line 68 of file mxm_17841b.c.
#define MXM_41B_BIT_MASK_ONE_BYTE (0xFFu) |
(uint8_t) one byte bit mask
Definition at line 74 of file mxm_17841b.c.
#define MXM_41B_BIT_SHIFT_HALF_BYTE (4u) |
bit shift half byte length
Definition at line 65 of file mxm_17841b.c.
#define MXM_41B_BRIDGE_RESET_TIME_MS (100u) |
time interval that shall ensure that the bridge IC is completely reset in ms
Definition at line 85 of file mxm_17841b.c.
#define MXM_41B_CONFIG_REGISTER_LENGTH (7u) |
default config register bank length
Length of the array that writes the registers referenced in mxm_41B_reg_default_values in MXM_41BStateHandlerInit().
Definition at line 92 of file mxm_17841b.c.
#define MXM_41B_WAIT_COUNTER_THRESHOLD (75u) |
threshold above which a reset in this driver occurs in case of hangup
Definition at line 77 of file mxm_17841b.c.
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Write a buffer transaction to MAX17841B.
Writes into the load-queue-buffer. The supplied-message-length marks the length of the Battery Management Protocol message without any stuffing-bytes for read-commands. The extendMessage parameter describes with how much bytes the command shall be stretched. This number will be added to the length of the command and written into the length field of the buffer. After this action the user has to select the next load queue with the appropriate command in order to mark the load queue as sendable.
[in,out] | pInstance | pointer to the state of the MAX17841B-state-machine |
[in] | kpkMessage | pointer to an array containing the message |
[in] | messageLength | length of the supplied array |
[in] | extendMessage | stretch the message by number of bytes |
Definition at line 362 of file mxm_17841b.c.
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Write the config register of MAX17841B.
This functions writes the config registers with the values from the local register copies. It puts together a buffer from these register values and calls MXM_41BRegisterWrite() with this data.
[in,out] | pInstance | state pointer |
Definition at line 342 of file mxm_17841b.c.
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Reset register copies to default.
[out] | pInstance | pointer to the state-struct |
Definition at line 410 of file mxm_17841b.c.
void MXM_41BInitializeStateStruct | ( | MXM_41B_INSTANCE_s * | pInstance | ) |
Initializes the state struct with default values.
This function is called through the startup of the driver in order to ensure proper default values.
[out] | pInstance | instance of the state struct that shall be initialized |
Definition at line 956 of file mxm_17841b.c.
STD_RETURN_TYPE_e MXM_41BReadRegisterFunction | ( | const MXM_41B_INSTANCE_s *const | kpkInstance, |
MXM_41B_REG_FUNCTION_e | registerFunction, | ||
MXM_41B_REG_BIT_VALUE * | pValue | ||
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Read the value of a register function.
Corresponding read-function to MXM_41BWriteRegisterFunction(). This function reads a value from the register-copy of MAX17841B and writes it into a supplied pointer. The register function is specified by the corresponding MXM_41B_REG_FUNCTION_e value.
This function implements only the needed subset of register functions.
[in,out] | kpkInstance | pointer to the state of the MAX17841B-state-machine |
[in] | registerFunction | name of the function that shall be written |
[out] | pValue | pointer to a variable in which the bits shall be written |
Definition at line 875 of file mxm_17841b.c.
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Read one or multiple registers of MAX17841B.
This function puts together a SPI message consisting of command and bit-stuffing and writes it to the assigned SPI-interface.
The command should be one of the MXM_41B_REG_ADD_t commands. The function checks whether the chosen command is a read command.
The RX buffer length has to be consistent with the RX buffer. RX buffer lengths of one will read one register only. Longer RX buffers will read also from adjacent registers. Please see the MAX17841B data sheet for reference.
[in,out] | pInstance | pointer to the state of the MAX17841B-state-machine |
[in] | command | register command of MXM_41B_REG_ADD_t |
[out] | pRxBuffer | pointer to an array into which read data will be written |
[in] | length | length of the RX buffer array |
Definition at line 316 of file mxm_17841b.c.
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Write one or multiple registers of MAX17841B.
This function puts together a SPI message consisting of command and payload and writes it to the assigned SPI interface.
The command should be one of the MXM_41B_REG_ADD_t commands. The function checks whether the chosen command is a write command.
The payload-length has to be consistent with the payload. Payload-lengths of one will write to one register only. Longer payloads will write to adjacent registers. Please see the MAX17841B data sheet for reference.
[in,out] | pInstance | pointer to the state of the MAX17841B-state-machine |
[in] | command | register command of MXM_41B_REG_ADD_t |
[in] | kpkPayload | pointer to an array of data to be written |
[in] | lengthPayload | length of the payload array |
Definition at line 282 of file mxm_17841b.c.
STD_RETURN_TYPE_e MXM_41BSetStateRequest | ( | MXM_41B_INSTANCE_s * | pInstance, |
MXM_STATEMACH_41B_e | state, | ||
uint16_t * | pPayload, | ||
uint8_t | payloadLength, | ||
uint8_t | extendMessageBytes, | ||
uint16_t * | pRxBuffer, | ||
uint16_t | rxBufferLength, | ||
MXM_41B_STATE_REQUEST_STATUS_e * | processed | ||
) |
Set state transition for MAX17841B-state-machine.
This function is used to transition into another state of the state-machine which is handled in MXM_41BStateMachine(). The user sets a state that should be transitioned into. For most states a payload and a payload-length can be supplied. The payload-length has to be consistent with the length in payload. Typically, this supplied payload describes the byte-sequence that should be written into the load-queue.
For the case of a e.g. READALL-command the message-length has to be stretched by the number of connected monitoring ICs times two. This is achieved by passing on extendMessageBytes.
In case that the state generates data that has to be handled in the higher layers, the pointer pRxBuffer will be used. Please make sure that the length of pRxBuffer is also consistent.
In order to determine success or failure of the requested state, the higher layer supplies a pointer into which the current status of the requested state will be written.
[in,out] | pInstance | pointer to the state of the MAX17841B-state-machine |
[in] | state | state into which the state-machine shall transition |
[in] | pPayload | pointer to an array with data that will be processed in the requested state |
[in] | payloadLength | length of the payload-array |
[in] | extendMessageBytes | number of bytes that shall be appended by the ASCI |
[out] | pRxBuffer | pointer to an array that will be filled by the requested state with data that has to be processed in higher layers |
[in] | rxBufferLength | length of the RX buffer array |
[out] | processed | pointer of the status of the requested state |
Definition at line 775 of file mxm_17841b.c.
void MXM_41BStateMachine | ( | MXM_41B_INSTANCE_s * | pInstance | ) |
Execute state-machine for the MAX17841B.
This function executes the state-machine that communicates with the MAX17841B over SPI.
Definition at line 910 of file mxm_17841b.c.
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Transition into idle, mark as an error occurred.
[out] | pInstance | pointer to the state-struct |
Definition at line 401 of file mxm_17841b.c.
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Transition into idle, mark as successfull.
[out] | pInstance | pointer to the state-struct |
Definition at line 392 of file mxm_17841b.c.
STD_RETURN_TYPE_e MXM_41BWriteRegisterFunction | ( | MXM_41B_INSTANCE_s * | pInstance, |
MXM_41B_REG_FUNCTION_e | registerFunction, | ||
MXM_41B_REG_BIT_VALUE | value | ||
) |
Write a register function.
Functions of the ASCI are mapped onto parts of the register. This function is used to write the proper values into the register copy of the ASCI that is inside the driver. In order to use the function, provide the name of the ASCI function that you want to write (MXM_41B_REG_FUNCTION_e) and the value that should be written (MXM_41B_REG_BIT_VALUE). Currently, only a relevant subset of the ASCI features is implemented.
After updating the register copy, it has to be written to the ASCI memory. For the configuration registers this is done with the function MXM_41BConfigRegisterWrite(). This function is for example called in state MXM_STATEMACH_41B_WRITE_CONF_AND_INT_REGISTER.
[in,out] | pInstance | pointer to the state of the MAX17841B-state-machine |
[in] | registerFunction | name of the function that shall be written |
[in] | value | value of the bits that shall be written |
Definition at line 831 of file mxm_17841b.c.