CN112365906A

CN112365906A - Method for processing various CHIME sounds of automobile by BSP module based on SOC (system on chip)

Info

Publication number: CN112365906A
Application number: CN202011515489.8A
Authority: CN
Inventors: 刘锐; 王瑞; 王万荣; 俞海滨; 韩美龙; 张博
Original assignee: SAIC Maxus Vehicle Co Ltd
Current assignee: SAIC Maxus Vehicle Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-02-12

Abstract

A BSP module based on SOC processes various CHIME sounds of an automobile, comprising the following steps of S1, triggering various CHIME sounds to be transmitted to an MCU after A/D conversion; step S2, the MCU transmits the received chime sound to the SOC; step S3, carrying out audio arbitration on the chip sound through a sub-module BSP of the SOC, and sending an arbitration result to the MCU through an spi protocol; and step S4, the MCU sends the received arbitration result to the DSP, and the DSP plays the chime audio data after D/A conversion. The method utilizes the soc to process various chip tones and transmits the processed audio data to the dsp for playing, thereby overcoming the defect that the prior system can only play single-frequency tones, reducing the cost and needing no high-performance dsp chip for processing.

Description

Method for processing various CHIME sounds of automobile by BSP module based on SOC (system on chip)

Technical Field

The invention belongs to the technical field of audio frequency, and particularly relates to a method for processing various CHIME sounds of an automobile by a BSP module based on SOC.

Background

Based on the processing of various chip sounds on a vehicle-mounted entertainment system, the MCU is used for controlling and then handing over various automobile chip sounds in a specific DSP, such as plugging and unplugging safety seat sounds, low-power reminding sounds, various alarming chips are provided with a DSP for sounding, the DSP sounding characteristic is sensed by a DSP chip, most DSP chips can only send single-frequency tone, split ends and the like, and the method is difficult to accept or not pleasant for users and has no better effect of reminding the users of various alarms.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a method for processing various CHIME sounds of an automobile by a BSP module based on SOC, wherein the CHIME sounds are processed by the SOC and then transmitted to a DSP for sounding, so that various CHIME sounds can be better distinguished.

The invention provides a method for processing various CHIME sounds of an automobile by a BSP module based on SOC (system on chip), which comprises the following steps,

step S1, triggering various types of chime sounds to be transmitted to the MCU after A/D conversion;

step S2, the MCU transmits the received chime sound to the SOC;

step S3, carrying out audio arbitration on the chip sound through a sub-module BSP of the SOC, and sending an arbitration result to the MCU through an spi protocol;

and step S4, the MCU sends the received arbitration result to the DSP, and the DSP plays the chime audio data after D/A conversion.

As a further technical scheme of the invention, an audio ALSA module of the SP carries out arbitration processing on the chime sound, and the ALSA module adopts a two-dimensional matrix algorithm.

Further, the MCU processes information of the chime sound of each electronic unit and then sends the information to the SOC through the SPI.

Further, the MCU transmits the CHIME tone to the BSP module of the SOC through the SPI or the UART.

The method has the advantages that various chip tones are processed by the soc, and the processed audio data are transmitted to the dsp for playing, so that the defect that the conventional system can only play single-frequency tones is overcome, the cost is reduced, and the dsp chip with high performance is not required for processing.

Drawings

FIG. 1 is a schematic flow diagram of the process of the present invention;

fig. 2 is a chip audio playing operation state diagram of the present invention.

Detailed Description

Referring to fig. 1 and 2, the present embodiment provides a method for processing various CHIME sounds of a vehicle by a BSP module based on SOC, including the following steps,

step S2, the MCU transmits the received chime sound to the SOC;

And an audio ALSA module of the SP carries out arbitration processing on the chime sound, and the ALSA module adopts a two-dimensional matrix algorithm.

And the MCU performs information processing on the chime sound of each electronic unit and then sends the chime sound to the SOC through the SPI.

The MCU transmits CHIME tone communication to the BSP module of the SOC through the SPI or the UART.

The MCU communicates various CHIME sounds to the BSP module of the SOC for processing through SPI or UART communication, the BSP module carries out sound source arbitration after receiving the MESSAGE of the CHIME of each electronic unit, the sound is firstly sounded with high priority, the sound is secondly sounded with low priority, and the sound can be sounded simultaneously if sound mixing is carried out, which is agreed by an automobile manufacturer. Then BSP can deliver the MESSAGE of various CHIMEs, the submodule drives ALSA processing, the audio data processed by ALSA is communicated to MCU through SPI or UART, MCU is communicated to DSP, thus the played audio is not single frequency sound, finally the user can hear various different CHIME sounds, namely the warning effect is achieved, and the user can experience well.

The MCU module is deployed on each automobile, the MCU module is responsible for information processing of electronic units related to various automobiles, the DSP module is mainly responsible for sound related mainly related to power amplifier sound effect, namely mounted external amplifier, and the key point is the BSP module of the SOC.

The mixing processing of Alsa to various chimes is also one of the main implementation, and a two-dimensional matrix algorithm is required, because for various chimes, the following results are obtained, such as chime1 and chime2, which are two kinds of audio, chime1 is the current playing sound, chime2 is the new request, and through the two-dimensional matrix algorithm, the following results are obtained: u.chime1 continues playing, chime2 ignores, v.chime1 pauses playing, chime2 sound starts playing, w.chime1 and chime2 sound mixes playing.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for processing various CHIME sounds of an automobile by a BSP module based on SOC is characterized by comprising the following steps,

step S2, the MCU transmits the received chime sound to the SOC;

2. The method of claim 1, wherein the CHIME sounds are arbitrated by an audio ALSA module of the BSP, and the ALSA module employs a two-dimensional matrix algorithm.

3. The method of claim 1, wherein the MCU processes information of the CHIME sounds of the electronic units and transmits the processed CHIME sounds to the SOC through the SPI.

4. The method of claim 1, wherein the MCU transmits CHIME tones to the BSP module of the SOC through the SPI or UART.