Public function

Functions
void	c2x5wamp_cfg_setup (c2x5wamp_cfg_t *cfg)
	Config Object Initialization function.
C2X5WAMP_RETVAL	c2x5wamp_init (c2x5wamp_t *ctx, c2x5wamp_cfg_t *cfg)
	Initialization function.
void	c2x5wamp_default_cfg (c2x5wamp_t *ctx)
	Click Default Configuration function.
uint8_t	c2x5wamp_set_mode (c2x5wamp_t *ctx, uint8_t select_mode)
	Set mode selection of the amplifier function.
uint8_t	c2x5wamp_set_gain (c2x5wamp_t *ctx, uint8_t select_gain)
	Set gain resistors of the amplifier function.
uint8_t	c2x5wamp_check_input (c2x5wamp_t *ctx)
	Check input impedance function.

Detailed Description

Function Documentation

c2x5wamp_cfg_setup()

void c2x5wamp_cfg_setup

(

c2x5wamp_cfg_t *

cfg

)

Config Object Initialization function.

Parameters

cfg	Click configuration structure.

@description This function initializes click configuration structure to init state.

Note

All used pins will be set to unconnected state.

c2x5wamp_check_input()

uint8_t c2x5wamp_check_input

(

c2x5wamp_t *

ctx

)

Check input impedance function.

Parameters

ctx	Click object.

Returns

• 0 : Protection is not activated.
• 1 : Protection is activated.

@description Function checks input impedance is undervoltage, or is overcurrent or is thermal protection activated of the TDA7491LP chip on 2x5W Amp Click.

c2x5wamp_default_cfg()

void c2x5wamp_default_cfg

(

c2x5wamp_t *

ctx

)

Click Default Configuration function.

Parameters

ctx	Click object.

@description This function executes default configuration for 2x5W AMP click.

Note

Set Standby mode

Set amplifier gain to 20dB

c2x5wamp_init()

C2X5WAMP_RETVAL c2x5wamp_init	(	c2x5wamp_t *	ctx,
		c2x5wamp_cfg_t *	cfg )

Initialization function.

Parameters

ctx	Click object.
cfg	Click configuration structure.

@description This function initializes all necessary pins and peripherals used for this click.

c2x5wamp_set_gain()

uint8_t c2x5wamp_set_gain	(	c2x5wamp_t *	ctx,
		uint8_t	select_gain )

Set gain resistors of the amplifier function.

Parameters

ctx	Click object.
select_gain	0 : 20dB. 1 : 26dB. 2 : 30dB. 3 : 32dB.

Returns

• 0 : ERROR, nominal amplifier gain is not set.
• 1 : OK, nominal amplifier gain is set.

@description Function set amplifier gain resistors of the amplifier by setting the TDA7491LP chip on 2x5W Amp Click.

c2x5wamp_set_mode()

uint8_t c2x5wamp_set_mode	(	c2x5wamp_t *	ctx,
		uint8_t	select_mode )

Set mode selection of the amplifier function.

Parameters

ctx	Click object.
select_mode	0 : Standby mode, all circuits are turned off, very low current consumption. 1 : Mute mode, inputs are connected to ground and the positive and negative PWM outputs are at 50% duty cycle. 2 : Play mode, the amplifiers are active.

Returns

• 0 : ERROR, there is no desired mode.
• 1 : OK, the desired mode is selected.

@description Function set one of the three operating mode of the amplifier by setting the TDA7491LP chip on 2x5W Amp Click.