Bit extraction function for MXM_17841b. More...

#include "general.h"

Include dependency graph for mxm_bitextract.h:

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Macros
#define	MXM_41B_REG_FALSE ((MXM_41B_REG_BIT_VALUE)0x00u)

#define	MXM_41B_REG_TRUE ((MXM_41B_REG_BIT_VALUE)0x01u)

#define	MXM_41B_REG_BAUD_RATE_500KBPS ((MXM_41B_REG_BIT_VALUE)0x00u)

#define	MXM_41B_REG_BAUD_RATE_500KBPS_ALT ((MXM_41B_REG_BIT_VALUE)0x01u)

#define	MXM_41B_REG_BAUD_RATE_1MBPS ((MXM_41B_REG_BIT_VALUE)0x02u)

#define	MXM_41B_REG_BAUD_RATE_2MBPS ((MXM_41B_REG_BIT_VALUE)0x03u)

#define	MXM_41B_REG_KEEP_ALIVE_0US ((MXM_41B_REG_BIT_VALUE)0x00u)

#define	MXM_41B_REG_KEEP_ALIVE_10US ((MXM_41B_REG_BIT_VALUE)0x01u)

#define	MXM_41B_REG_KEEP_ALIVE_20US ((MXM_41B_REG_BIT_VALUE)0x02u)

#define	MXM_41B_REG_KEEP_ALIVE_40US ((MXM_41B_REG_BIT_VALUE)0x03u)

#define	MXM_41B_REG_KEEP_ALIVE_80US ((MXM_41B_REG_BIT_VALUE)0x04u)

#define	MXM_41B_REG_KEEP_ALIVE_160US ((MXM_41B_REG_BIT_VALUE)0x05u)

#define	MXM_41B_REG_KEEP_ALIVE_320US ((MXM_41B_REG_BIT_VALUE)0x06u)

#define	MXM_41B_REG_KEEP_ALIVE_640US ((MXM_41B_REG_BIT_VALUE)0x07u)

#define	MXM_41B_REG_KEEP_ALIVE_1280US ((MXM_41B_REG_BIT_VALUE)0x08u)

#define	MXM_41B_REG_KEEP_ALIVE_2560US ((MXM_41B_REG_BIT_VALUE)0x09u)

#define	MXM_41B_REG_KEEP_ALIVE_5120US ((MXM_41B_REG_BIT_VALUE)0x0Au)

#define	MXM_41B_REG_KEEP_ALIVE_10240US ((MXM_41B_REG_BIT_VALUE)0x0Bu)

#define	MXM_41B_REG_KEEP_ALIVE_INF_DLY ((MXM_41B_REG_BIT_VALUE)0x0Fu)

#define	MXM_REG_MASK(start, end) (((1u << ((end) - (start) + 1u)) - 1u) << (start))
	define for creating a bitmask More...

#define	MXM_41B_TX_PREAMBLES ((MXM_41B_REG_BITS)5u)

#define	MXM_41B_KEEP_ALIVE ((MXM_41B_REG_BITS)0u)

#define	MXM_41B_RX_ERROR ((MXM_41B_REG_BITS)7u)

#define	MXM_41B_RX_BUSY_STATUS ((MXM_41B_REG_BITS)5u)

#define	MXM_41B_RX_OVERFLOW_INT_ENABLE ((MXM_41B_REG_BITS)3u)

#define	MXM_41B_RX_STOP_STATUS ((MXM_41B_REG_BITS)1u)

#define	MXM_41B_RX_EMPTY_STATUS ((MXM_41B_REG_BITS)0u)

Typedefs
typedef uint8_t	MXM_41B_REG_BIT_VALUE
	Bit-values for registers. More...

typedef uint8_t	MXM_41B_REG_BITS

Functions
MXM_41B_REG_BIT_VALUE	mxm_41bWriteValue (MXM_41B_REG_BIT_VALUE value, uint8_t numberOfBits, MXM_41B_REG_BITS shift, uint8_t reg)
	write a value to a register supplied as variable More...

MXM_41B_REG_BIT_VALUE	mxm_41bReadValue (uint8_t reg, uint8_t numberOfBits, MXM_41B_REG_BITS position)
	read a value from a register supplied as variable More...

Detailed Description

Bit extraction function for MXM_17841b.

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Author: foxBMS Team

Date: 2019-01-15 (date of creation)

Updated: 2020-05-14 (date of last update)

Prefix: MXM

This module supplies a specific bit extraction functionality to read & write into status registers. The different statuses that are read from or write into are indicated in the enum. Battery monitoring driver for MAX1785x battery monitoring ICs.

Definition in file mxm_bitextract.h.

Macro Definition Documentation

◆ MXM_41B_KEEP_ALIVE

#define MXM_41B_KEEP_ALIVE ((MXM_41B_REG_BITS)0u)

bit for the feature Keep Alive

Definition at line 119 of file mxm_bitextract.h.

◆ MXM_41B_REG_BAUD_RATE_1MBPS

#define MXM_41B_REG_BAUD_RATE_1MBPS ((MXM_41B_REG_BIT_VALUE)0x02u)

bit sequence for baud rate 1MBps

Definition at line 79 of file mxm_bitextract.h.

◆ MXM_41B_REG_BAUD_RATE_2MBPS

#define MXM_41B_REG_BAUD_RATE_2MBPS ((MXM_41B_REG_BIT_VALUE)0x03u)

bit sequence for baud rate 2MBps

Definition at line 81 of file mxm_bitextract.h.

◆ MXM_41B_REG_BAUD_RATE_500KBPS

#define MXM_41B_REG_BAUD_RATE_500KBPS ((MXM_41B_REG_BIT_VALUE)0x00u)

bit sequence for baud rate 500KBps

Definition at line 75 of file mxm_bitextract.h.

◆ MXM_41B_REG_BAUD_RATE_500KBPS_ALT

#define MXM_41B_REG_BAUD_RATE_500KBPS_ALT ((MXM_41B_REG_BIT_VALUE)0x01u)

alternative bit sequence for baud rate 500KBps

Definition at line 77 of file mxm_bitextract.h.

◆ MXM_41B_REG_FALSE

#define MXM_41B_REG_FALSE ((MXM_41B_REG_BIT_VALUE)0x00u)

one bit, 0u

Definition at line 71 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_0US

#define MXM_41B_REG_KEEP_ALIVE_0US ((MXM_41B_REG_BIT_VALUE)0x00u)

bit sequence for a keep alive period of 0µs

Definition at line 83 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_10240US

#define MXM_41B_REG_KEEP_ALIVE_10240US ((MXM_41B_REG_BIT_VALUE)0x0Bu)

bit sequence for a keep alive period of 10240µs

Definition at line 105 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_10US

#define MXM_41B_REG_KEEP_ALIVE_10US ((MXM_41B_REG_BIT_VALUE)0x01u)

bit sequence for a keep alive period of 10µs

Definition at line 85 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_1280US

#define MXM_41B_REG_KEEP_ALIVE_1280US ((MXM_41B_REG_BIT_VALUE)0x08u)

bit sequence for a keep alive period of 1280µs

Definition at line 99 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_160US

#define MXM_41B_REG_KEEP_ALIVE_160US ((MXM_41B_REG_BIT_VALUE)0x05u)

bit sequence for a keep alive period of 160µs

Definition at line 93 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_20US

#define MXM_41B_REG_KEEP_ALIVE_20US ((MXM_41B_REG_BIT_VALUE)0x02u)

bit sequence for a keep alive period of 20µs

Definition at line 87 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_2560US

#define MXM_41B_REG_KEEP_ALIVE_2560US ((MXM_41B_REG_BIT_VALUE)0x09u)

bit sequence for a keep alive period of 2560µs

Definition at line 101 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_320US

#define MXM_41B_REG_KEEP_ALIVE_320US ((MXM_41B_REG_BIT_VALUE)0x06u)

bit sequence for a keep alive period of 320µs

Definition at line 95 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_40US

#define MXM_41B_REG_KEEP_ALIVE_40US ((MXM_41B_REG_BIT_VALUE)0x03u)

bit sequence for a keep alive period of 40µs

Definition at line 89 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_5120US

#define MXM_41B_REG_KEEP_ALIVE_5120US ((MXM_41B_REG_BIT_VALUE)0x0Au)

bit sequence for a keep alive period of 5120µs

Definition at line 103 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_640US

#define MXM_41B_REG_KEEP_ALIVE_640US ((MXM_41B_REG_BIT_VALUE)0x07u)

bit sequence for a keep alive period of 640µs

Definition at line 97 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_80US

#define MXM_41B_REG_KEEP_ALIVE_80US ((MXM_41B_REG_BIT_VALUE)0x04u)

bit sequence for a keep alive period of 80µs

Definition at line 91 of file mxm_bitextract.h.

◆ MXM_41B_REG_KEEP_ALIVE_INF_DLY

#define MXM_41B_REG_KEEP_ALIVE_INF_DLY ((MXM_41B_REG_BIT_VALUE)0x0Fu)

bit sequence for a infinite keep alive period (disabled)

Definition at line 107 of file mxm_bitextract.h.

◆ MXM_41B_REG_TRUE

#define MXM_41B_REG_TRUE ((MXM_41B_REG_BIT_VALUE)0x01u)

one bit, 1u

Definition at line 73 of file mxm_bitextract.h.

◆ MXM_41B_RX_BUSY_STATUS

#define MXM_41B_RX_BUSY_STATUS ((MXM_41B_REG_BITS)5u)

bit for the RX Busy Status

Definition at line 123 of file mxm_bitextract.h.

◆ MXM_41B_RX_EMPTY_STATUS

#define MXM_41B_RX_EMPTY_STATUS ((MXM_41B_REG_BITS)0u)

bit for the RX Empty Status

Definition at line 129 of file mxm_bitextract.h.

◆ MXM_41B_RX_ERROR

#define MXM_41B_RX_ERROR ((MXM_41B_REG_BITS)7u)

bit for the RX Error

Definition at line 121 of file mxm_bitextract.h.

◆ MXM_41B_RX_OVERFLOW_INT_ENABLE

#define MXM_41B_RX_OVERFLOW_INT_ENABLE ((MXM_41B_REG_BITS)3u)

bit for the feature RX Overflow Interrupt

Definition at line 125 of file mxm_bitextract.h.

◆ MXM_41B_RX_STOP_STATUS

#define MXM_41B_RX_STOP_STATUS ((MXM_41B_REG_BITS)1u)

bit for the RX Stop Status

Definition at line 127 of file mxm_bitextract.h.

◆ MXM_41B_TX_PREAMBLES

#define MXM_41B_TX_PREAMBLES ((MXM_41B_REG_BITS)5u)

bit for the feature TX Preambles

Definition at line 117 of file mxm_bitextract.h.

◆ MXM_REG_MASK

#define MXM_REG_MASK	(	start,
		end
	)	(((1u << ((end) - (start) + 1u)) - 1u) << (start))

define for creating a bitmask

Definition at line 112 of file mxm_bitextract.h.

Typedef Documentation

◆ MXM_41B_REG_BIT_VALUE

typedef uint8_t MXM_41B_REG_BIT_VALUE

Bit-values for registers.

Definition at line 69 of file mxm_bitextract.h.

◆ MXM_41B_REG_BITS

typedef uint8_t MXM_41B_REG_BITS

types for bits in the register of MAX17841B

Definition at line 115 of file mxm_bitextract.h.

Function Documentation

◆ mxm_41bReadValue()

MXM_41B_REG_BIT_VALUE mxm_41bReadValue	(	uint8_t	reg,
		uint8_t	numberOfBits,
		MXM_41B_REG_BITS	position
	)

read a value from a register supplied as variable

This function takes a register (reg), and extracts the data described by its length in bits (numberOfBits) and position (pos). This value is then returned.

Parameters

[in]	reg	value of the register to be read
[in]	numberOfBits	length og the bit sequence in bits
[in]	position	start position of the bit sequence

Returns: the isolated and shifted bit value

Definition at line 101 of file mxm_bitextract.c.

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◆ mxm_41bWriteValue()

MXM_41B_REG_BIT_VALUE mxm_41bWriteValue	(	MXM_41B_REG_BIT_VALUE	value,
		uint8_t	numberOfBits,
		MXM_41B_REG_BITS	shift,
		uint8_t	reg
	)

write a value to a register supplied as variable

This function takes a register (reg), writes the data described by numberOFBits, shift and value to the register value and returns the updated register.