SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH

Command Set

2.7.8 Audio Boost WAV File – 42hex - B ascii

Commands (host)

3 bytes

1.- 0x41 (hex), A (ascii). *Audio Command.

2.- 0x42 (hex), B (ascii).

3.- Boost State: OFF 0x00(hex) or

ON 0x01(hex).

Responses (device)

1 byte

1.- 0x4F (hex), O (ascii) – success ACK or

0x46 (hex), F (ascii) – fail NAK.

Description

Command needed to turn ON or turn OFF the audio

output boost (refer to datasheet to learn more about

this feature).

The OFF boost state is recommended for

headphones, and the ON boost state is

recommended for external amplifiers or speakers with

amplifier.

Default reset or power on state of the Audio Boost

is 0x00(hex) boost OFF.

This command could be called anytime, however is

recommended to be called in a non-playing state to

avoid clicks in the audio outputs.

Example (sent commands)

Example 1:

<41,42,01> Turn ON audio boost.

Example 2:

<41,42,00> Turn OFF audio boost.

All data is in hex.