Configuring the Firmware#

The default application performs as described in the Overview. There are numerous compile time options that can be added to change the example design without requiring code changes. To change the options explained in the table below, add the desired configuration variables to the APP_COMPILE_DEFINITIONS cmake variable located here.

If options are changed, the application firmware must be rebuilt.

Table 2 FFD Compile Options#

Compile Option

Description

Default Value

appconfINTENT_ENABLED

Enables/disables the intent engine, primarily for debug.

1

appconfINTENT_RESET_DELAY_MS

Sets the period after the wake up phrase has been heard for a valid command phrase

5000

appconfINTENT_RAW_OUTPUT

Set to 1 to output all keywords found, skipping the internal wake up and command state machine

0

appconfAUDIO_PLAYBACK_ENABLED

Enables/disables the audio playback command response

1

appconfINTENT_UART_OUTPUT_ENABLED

Enables/disables the UART intent message

1

appconfINTENT_I2C_OUTPUT_ENABLED

Enables/disables the I2C intent message

1

appconfUART_BAUD_RATE

Sets the baud rate for the UART tx intent interface

9600

appconfINTENT_I2C_OUTPUT_DEVICE_ADDR

Sets the I2C slave address to transmit the intent to

0x01

appconfINTENT_TRANSPORT_DELAY_MS

Sets the delay between host wake up requested and I2C and UART keyword code transmission

50

appconfINTENT_QUEUE_LEN

Sets the maximum number of detected intents to hold while waiting for the host to wake up

10

appconfINTENT_WAKEUP_EDGE_TYPE

Sets the host wake up pin GPIO edge type. 0 for rising edge, 1 for falling edge

0

appconfAUDIO_PIPELINE_SKIP_IC_AND_VNR

Enables/disables the IC and VNR

0

appconfAUDIO_PIPELINE_SKIP_NS

Enables/disables the NS

0

appconfAUDIO_PIPELINE_SKIP_AGC

Enables/disables the AGC

0