MCP9808.h File Reference

MCP9808 Driver. More...

#include "sarmfsw.h"
#include "I2C_component.h"
#include "I2C_peripheral.h"
#include "MCP9808_proc.h"
#include "MCP9808_ex.h"

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Data Structures
union	uMCP9808_REG__CFG
	Union for CFG of MCP9808. More...
union	uMCP9808_REG__TEMP_LIM
	Union for Temperature Limit registers of MCP9808. More...
union	uMCP9808_REG__TEMP_AMB
	Union for Ambient temperature register of MCP9808. More...

Macros
#define	I2C_MCP9808_NB   1U
	Number of MCP9808 peripherals.
#define	MCP9808_ADDR   0x18U
	MCP9808 address.
#define	MCP9808_BASE_ADDR   MCP9808_ADDR
	MCP9808 Base address.

Enumerations
enum	MCP9808_reg {   MCP9808__RFU = 0U , MCP9808__CONFIGURATION , MCP9808__ALERT_UPPER , MCP9808__ALERT_LOWER ,   MCP9808__CRITICAL_TEMP_TRIP , MCP9808__TEMPERATURE , MCP9808__MANUFACTURER_ID , MCP9808__DEVICE_ID ,   MCP9808__RESOLUTION }
	Register map enum of MCP9808. More...
enum	MCP9808_res { MCP9808__RES_0_5 = 0U , MCP9808__RES_0_25 , MCP9808__RES_0_125 , MCP9808__RES_0_0625 }
	Resolution enum of MCP9808. More...
enum	MCP9808_hyst { MCP9808__HYST_0 = 0U , MCP9808__HYST_1_5 , MCP9808__HYST_3_0 , MCP9808__HYST_6_0 }
	Resolution enum of MCP9808. More...

Functions
FctERR	MCP9808_Init (const uint8_t idx, I2C_HandleTypeDef *const hi2c, const uint16_t devAddress)
	Initialization of the MCP9808 peripheral.
FctERR	MCP9808_Init_Single (void)
	Initialization for MCP9808 peripheral.
FctERR	MCP9808_Write (I2C_slave_t *const pSlave, const uint16_t *data, const uint16_t addr, const uint16_t nb)
	I2C Write function for MCP9808.
FctERR	MCP9808_Read (I2C_slave_t *const pSlave, uint16_t *data, const uint16_t addr, const uint16_t nb)
	I2C Read function for MCP9808.

Detailed Description

MCP9808 Driver.

Author

SMFSW

Copyright

MIT (c) 2017-2026, SMFSW

MCP9808: +/-0.5C Maximum Accuracy Digital Temperature Sensor

Macro Definition Documentation

I2C_MCP9808_NB

#define I2C_MCP9808_NB   1U

Number of MCP9808 peripherals.

Note

Define I2C_MCP9808_NB to enable multiple peripherals of this type

MCP9808_ADDR

#define MCP9808_ADDR   0x18U

MCP9808 address.

MCP9808_BASE_ADDR

#define MCP9808_BASE_ADDR   MCP9808_ADDR

MCP9808 Base address.

Note

Define MCP9808_BASE_ADDR to change default device base address

Enumeration Type Documentation

MCP9808_hyst

enum MCP9808_hyst

Resolution enum of MCP9808.

Enumerator
MCP9808__HYST_0	Hysteresis +0.0 Celsius degrees.
MCP9808__HYST_1_5	Hysteresis +1.5 Celsius degrees.
MCP9808__HYST_3_0	Hysteresis +3.0 Celsius degrees.
MCP9808__HYST_6_0	Hysteresis +6.0 Celsius degrees.

MCP9808_reg

enum MCP9808_reg

Register map enum of MCP9808.

Enumerator
MCP9808__RFU	RFU, Reserved for Future Use (Read-Only register)
MCP9808__CONFIGURATION	Configuration register (CONFIG)
MCP9808__ALERT_UPPER	Alert Temperature Upper Boundary Trip register (T UPPER)
MCP9808__ALERT_LOWER	Alert Temperature Lower Boundary Trip register (T LOWER)
MCP9808__CRITICAL_TEMP_TRIP	Critical Temperature Trip register (T CRIT)
MCP9808__TEMPERATURE	Temperature register (T A)
MCP9808__MANUFACTURER_ID	Manufacturer ID register.
MCP9808__DEVICE_ID	Device ID/Revision register.
MCP9808__RESOLUTION	Resolution register.

MCP9808_res

enum MCP9808_res

Resolution enum of MCP9808.

Enumerator
MCP9808__RES_0_5	Resolution +0.5 Celsius degrees.
MCP9808__RES_0_25	Resolution +0.25 Celsius degrees.
MCP9808__RES_0_125	Resolution +0.125 Celsius degrees.
MCP9808__RES_0_0625	Resolution +0.0625 Celsius degrees.

Function Documentation

MCP9808_Init()

FctERR MCP9808_Init	(	const uint8_t	idx,
		I2C_HandleTypeDef *const	hi2c,
		const uint16_t	devAddress )

Initialization of the MCP9808 peripheral.

Parameters

[in]	idx	- MCP9808 index
[in]	hi2c	- pointer to MCP9808 I2C instance
[in]	devAddress	- MCP9808 device address

Returns

FctERR - error code

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MCP9808_Init_Single()

FctERR MCP9808_Init_Single

(

void

)

Initialization for MCP9808 peripheral.

Warning

In case multiple devices (defined by I2C_MCP9808_NB > 1), you shall use MCP9808_Init instead

Returns

FctERR - error code

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MCP9808_Read()

FctERR MCP9808_Read	(	I2C_slave_t *const	pSlave,
		uint16_t *	data,
		const uint16_t	addr,
		const uint16_t	nb )

I2C Read function for MCP9808.

Parameters

[in,out]	pSlave	- Pointer to I2C slave instance
[in,out]	data	- pointer to read to (16b type pointer)
[in]	addr	- Address to read from
[in]	nb	- Number of bytes to read

Returns

FctERR - error code

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MCP9808_Write()

FctERR MCP9808_Write	(	I2C_slave_t *const	pSlave,
		const uint16_t *	data,
		const uint16_t	addr,
		const uint16_t	nb )

I2C Write function for MCP9808.

Parameters

[in,out]	pSlave	- Pointer to I2C slave instance
[in]	data	- pointer to write from (16b type pointer)
[in]	addr	- Address to write to
[in]	nb	- Number of bytes to write

Returns

FctERR - error code

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