Fan Control

The Fan control device layer is a proprietary user code utilized for configuring the fan control properties. More...

Collaboration diagram for Fan Control:

Files
file	dev_fan.c
	Contains fan initialization and execution functions.
file	dev_fan.h
	fan device driver

Functions
void	Dev_Fan_Initialize (void)
	This function initializes the fan object.
void	Dev_Fan_Task_100ms (void)
	this function needs to be called every 100ms it contains the code to update the status of the fan
void	Dev_Fan_Task_1s (void)
	This function needs to be called every 1s to keep the temperature of the board at a certain temperature.
void	Dev_Fan_Set_Override (void)
	Sets the fan override bit and the fan speed.
void	Dev_Fan_Set_Speed (uint8_t target_speed_percent)
	Sets the fan speed.
static uint16_t	Convert_From_Percentage (uint8_t percentage_value)
	Converts the percentage value to number of ticks.
static void	Override_Speed (void)
	Override the fan speed with maximum speed.
static void	Calculate_Speed (void)
	Calculates the fan speed.
static void	Update_Speed (void)
	Update the fan speed.

Variables
FAN_DATA_t	devFanData
	Data Object of fan.

Detailed Description

Function Documentation

Calculate_Speed()

static void Calculate_Speed ( void  )

static

Returns

void

This function calculates the fan speed.

Definition at line 200 of file dev_fan.c.

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Convert_From_Percentage()

static uint16_t Convert_From_Percentage ( uint8_t  percentage_value )

static

Returns

void

This function converts the percent value to the duty cycle value as per MULTIPLIER.

Definition at line 175 of file dev_fan.c.

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Dev_Fan_Initialize()

void Dev_Fan_Initialize

(

void

)

Returns

void

This function initializes fan data objects including the initial fan speed, the maximum allowable speed, and the increment/decrement step of the fan speed.

Definition at line 49 of file dev_fan.c.

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Dev_Fan_Set_Override()

void Dev_Fan_Set_Override

(

void

)

Returns

void

This function sets the fan override flag bit to true and sets the fan target speed to maximum speed.

Definition at line 145 of file dev_fan.c.

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Dev_Fan_Set_Speed()

void Dev_Fan_Set_Speed

(

uint8_t

target_speed_percent

)

Returns

void

This function sets the fan speed when the target speed does not exceed the maximum fan speed.

Definition at line 159 of file dev_fan.c.

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Dev_Fan_Task_100ms()

void Dev_Fan_Task_100ms

(

void

)

Returns

void

This function needs to be called every 100ms. This modulates the speed of fan depending on the initialized parameters in the fan object.

Note

This is called in a rather slow 100ms object, as the speed modulation is not so critical.

Definition at line 76 of file dev_fan.c.

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Dev_Fan_Task_1s()

void Dev_Fan_Task_1s

(

void

)

Returns

void

This function needs to be called every 1s. This modulates the speed of fan depending on the initialized parameters in the fan object. To keep the temperature of the board at around 40 degrees Celcius, the fan speed is increased/decreased depending on the temperature.

Note

This is called in a rather slow 1s object, as the speed modulation is not so critical.

Definition at line 110 of file dev_fan.c.

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Override_Speed()

static void Override_Speed ( void  )

static

Returns

void

This function changes the target speed value to maximum.

Definition at line 187 of file dev_fan.c.

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Update_Speed()

static void Update_Speed ( void  )

static

Returns

void

This functions updates the fan speed.

Definition at line 230 of file dev_fan.c.

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Variable Documentation

devFanData

FAN_DATA_t devFanData

The 'FAN_DATA_t' data object holds the access to all the fan control and monitoring values.

Definition at line 21 of file dev_fan.c.