Welcome to ROSMASTER R2 repository

1. Introduction of voice module

1.1. Voice Interaction Module Introduction

The CI1302 is a new-generation, high-performance neural network intelligent voice chip developed by Qiyingtailun. It integrates Qiyingtailun's proprietary brain neural network processor, the BNPU V3, and a CPU core. It boasts a system clock speed of up to 220MHz, built-in SRAM of up to 640KB, a power management unit (PMU) and an RC oscillator, a dual-channel, high-performance, low-power audio codec, and multiple peripheral control interfaces such as UART, IIC, IIS, PWM, GPIO, and PDM. Requiring only a small number of peripheral components such as resistors and capacitors, the chip can implement hardware solutions for various intelligent voice products, offering an extremely high cost-effectiveness.

Utilizing third-generation hardware BNPU technology, it supports neural networks such as DNN, TDNN, RNN, and CNN, as well as parallel vector operations. It enables voice recognition, voiceprint recognition, command word self-learning, voice detection, and deep learning noise reduction. This chip solution also supports multiple global languages, including Chinese, English, and Japanese. It can be widely used in home appliances, lighting, toys, wearable devices, industrial, and automotive products, enabling voice interaction and control, as well as various intelligent voice solutions.

The CI1302 chip features a Brain Neural Network Processing Unit (BNPU) core, supporting offline NN acceleration and hardware acceleration for voice signal processing. The CPU clock speed can reach 220MHz, enabling offline far-field voice recognition. It also has 2MB of built-in FLASH memory and supports 300 command words.

1.2 Operating Principle

This module uses a command-based wakeup mode. The user must speak the preset wakeup word to activate the voice interaction module. Once activated, voice recognition will begin. The default wakeup keyword in the factory firmware is "Xiao Ya Xiao Ya." If no voice is recognized after 20 seconds, the module enters sleep mode and must be reactivated upon further use.

When the CI1302 chip recognizes a corresponding voice entry, it transmits it through the serial port and IIC interface and reports it back. The IIC chip stores the received voice command and transmits it via the IIC slave protocol.

The module supports modifying wake-up words, command words, and customizing entries. Learn how to do this in the tutorials "2. Modifying Wake-Up and Command Words" and "3. Creating Custom Protocol Entry."

1.3. Notes

• Use a 5V power supply. Voltages exceeding 5V will damage the module.
• Use in a quiet environment; noisy environments will affect recognition performance.
• When speaking a term, speak loudly and slowly. It is recommended to stay within 5 meters of the module.

1.4. Hardware Interface Description

1.5 Using the Voice Module

1.2.1 Wiring

The module connects to the ROSMASTER main control unit (or hub board) via a universal Type-C data cable.

1.2.2 Wake-up Word

The wake-up word is "Hi,yahboom." When waking up, speak slowly; speaking too quickly will prevent the module from recognizing you. Only after waking up the module can it recognize other command words. Within 20 seconds of waking up, there's no need to wake up again; simply speak the command word.

1.2.3 Command Words

1) Voice Control of Car Movement

2) Voice Control RGB Light Strip Effect

3) Voice Control Color Recognition

4) Voice Control Color Tracking

5) Voice-controlled autonomous driving (line patrol)

6) Voice-controlled multi-point navigation