CI13241 & CI13242 Development Kit¶

Overview¶

The CI13241 & CI13242 development board consists of a module board (CI-F241GS01S/CI-F242GS01S, CI-F24XGS01S), a universal baseboard (CI-B02-MB), a microphone, and a speaker. The CI13241 & CI13242 development kit includes the CI1324X development board, a serial debug tool, an audio capture board, a USB cable, and DuPont wires. The CI13241 & CI13242 development board comes with standard firmware pre-installed, allowing wake-up and recognition using the wake word “Smart Butler.” New firmware can also be downloaded using the serial debug tool included in the development kit. This document provides a progressive introduction from basic to advanced topics, covering the composition and concepts of the development board and kit, differences between CI13241 and CI13242 development kits, introduction to the universal baseboard, features of the development kit, and application examples. First, let’s briefly explain the composition and concepts of the development board and kit.

The composition of the CI13241 & CI13242 development board is shown below:

Figure 1 CI13LC Development Board Composition

The composition of the CI13241 & CI13242 development kit is shown below:

Figure 2 CI13241 & CI13242 Development Kit Composition

Development Board Model Differences¶

The main difference between the CI13241 and CI13242 development boards lies in their main chips. There are two chip models: CI13241 and CI13242. The specific differences are shown in the table below:

No.	Development Board Model	Main Chip Model	FLASH Size	Difference Description
1	CI13242 Development Board	CI13242	2MB	Supports medium model, more command words
2	CI13241 Development Board	CI13241	1MB	Supports smaller model, moderate number of command words

Universal Baseboard Introduction¶

The ChipIntelli universal baseboard CI-B02-MB (hereinafter referred to as the baseboard) can be paired with CI110X series SMD modules, CI112X series SMD modules, CI13LC series SMD modules, and CI13LCX series SMD modules to form different series of evaluation kits. It enables basic voice recognition and playback function demonstrations, interface expansion applications, and user firmware development verification. The following is a detailed introduction to the universal baseboard.

Appearance of the baseboard:

Figure 3 Baseboard Appearance

Figure 4 Baseboard Interface Diagram

The baseboard features rich interfaces. The specific interface functions, signal names, and descriptions are shown in the table below:

Functional definitions of each interface on the baseboard:

Table 1 Interface Description

Ref.	Position	Function & Definition	Description	Notes
J23	1	TYPE-C Port	TYPE-C Interface 5V Power Input Firmware Programming Port	Note: This port is both for power supply and data programming
J14	2	5V GND	5V (5V Power Interface) GND (Ground Pin)	2PIN-2.54 Header 5V Power Input
SW1	3	Baseboard Power Button	Press to power off Release to power on	Check if power indicator is lit
K1	4	Extension Button	Trigger Function	Not used currently
J20	5	3.3V, 3.3V, GND	3PIN-2.54 3.3V Power Output	Max output 50mA
J19	6	5V RX0 TX0 GND	5V (5V Power Input) RX0 (UART0 Receive) TX0 (UART0 Transmit) GND (Ground Pin)	4PIN-2.54 Alternative Firmware Programming Port
S1	7	IR_RX PWM4 LED	Short PWM4 to IR_RX for IR Receive Function Short PWM4 to LED for Green LED Control	3PIN-2.54 PWM4 Function Selection
S2	8	IR_RX PWM3 LED	Short PWM3 to IR_TX for IR Transmit Function Short PWM3 to LED for Blue LED Control	3PIN-2.54 PWM3 Function Selection
S3	9	PWM5 LED	Short PWM5 to LED for Red LED Control	2PIN-2.54 PWM5 Function Selection
J11	10	SEL EN PGEN	Short EN to SEL for JTAG Debug Mode Short EN to PGEN for Firmware Update Mode	Usually use update mode for firmware download Connect jumper cap between EN and PGEN
J8	11	3.3V TCK TMS GND	3.3V (Max 50mA) TCK (JTAG_TCK) TMS (JTAG_TCKTMS) GND (Ground Pin)	4PIN-2.54 JTAG Debug Pins, not available for CI13LC/CI13LCX series
J3	12	SPK- SPK+	Connect to 8Ω/2W or 4Ω/3W Speaker	2PIN-2.54 Speaker interface, no polarity
J4	13	TX0 RX0 TX1 RX1 TX2 RX2 GND	TX0 (UART0 Transmit) RX0 (UART0 Receive) TX1 (UART1 Transmit) RX1 (UART1 Receive) TX2 (UART2 Transmit) RX2 (UART2 Receive) GND (Ground)	Connect to UART0, UART1 UART2 not available for voice module UART0 is connected to J19’s UART0
J5	14	PWM0 PWM1 DOUT DIN CS CLK GND	PWM0 (PWM0 Interface) PWM1 (PWM1 Interface) DOUT (Extended SPI) DIN (Extended SPI) CS (Extended SPI) CLK (Extended SPI) GND (Ground)	7PIN-2.54 Extended Function Port
J16	15	D-IN PG_EN	D-IN (Extended SPI Input) PG_EN (Program Enable)	PG_EN has same function as J11’s PGEN pin
J21 J22	16	MIC+ MIC-	MIC+ (Microphone Positive) MIC- (Microphone Negative)	Supports 2.54mm or 1.25mm pitch microphones, compatible with C22 GS01S/D02 GS01S/D03 GS01S/F24GS01S
J15 J18	17	MIC+ MIC-	MIC+ (Microphone Positive) MIC- (Microphone Negative)	Supports 2.54mm or 1.25mm pitch microphones, compatible with B02GS04S/B03GS04S modules
J6 J17	18	MIC+ MIC-	MIC+ (Microphone Positive) MIC- (Microphone Negative)	Supports 2.54mm or 1.25mm pitch microphones, no compatible module currently
J7	19	3.3V SDO SDI SCLK LRCK MCLK GND	3.3V (Power Output) SDO (IIS_SDO) SDI (IIS_SDI) SCLK (IIS_SCLK) LRCK (IIS_LRCK) MCLK (IIS_MCLK) GND (Ground)	Supports connection to audio capture board for audio collection
J1 D1 D2	20	IR_RX IR_TX	IR Transmit IR Receive	Requires shorting interfaces 7 and 8 for configuration
J12 J13	21	Module Interface	Connect to Voice Module	CI-B02GS04S CI-B03GS04S
J9 J10	22	Module Interface	Connect to Voice Module	No compatible module currently
J1 J2	23	Module Interface	Connect to Voice Module	CI-C22 GS01S CI-D02 GS01S CI-D03 GS01S CI-D01 GS01S CI-F24GS01S
U2	24	RGB LED	Controlled by PWM3/PWM4/PWM5	Requires shorting interfaces 7, 8, 9 for configuration

For more detailed information about the baseboard interfaces and their applications, please refer to the baseboard schematic file below:

Baseboard Schematic

Development Kit Features¶

The development kit consists of a development board, serial debug tool, audio capture board, USB cable, and DuPont wires. The microphone enables voice input, the speaker enables audio playback, the serial debug tool facilitates firmware downloads and debug information printing, and the audio capture board enables voice data collection and analysis. The following describes how to connect each component to the development board.

For the CI13241 & CI13242 development board, the microphone connector is J22. Note that the microphone has polarity (positive/negative) and the connector is keyed to prevent incorrect insertion. The speaker connector is J3, which is non-polarized. The connection diagram for the development board’s microphone and speaker is shown below:

Figure 5 Microphone and Speaker Connection Diagram

There are two methods for downloading firmware to the development board. The hardware connection diagrams for both methods are shown below:

Figure 6 Download Serial Port Connection Diagram

The hardware connection diagram for development board communication and log printing is shown below:

Figure 7 Communication Serial Port Connection Diagram

Application Example¶

The following example demonstrates how to use this development kit by programming the module board with standard firmware, waking it up with voice commands, and controlling it through voice to get audio feedback from the development kit.

Note: When purchasing our CI-F242GS01S/CI-F241GS01S module samples, they come with basic firmware that provides the following functionality: when a command word is recognized, the corresponding response will be played through the speaker.

Preparation¶

To complete this example, you’ll need the materials listed in Table 2. For CI13241 chip development, you can choose the CI-F241GS01S module. The firmware size should be less than 1MB.

Table 2 Bill of Materials

Name	Description	Quantity	Purchase Method
CI-F242GS01S CI-F241GS01S	Voice Module Board	1	Purchase Samples
CI-B02-MB	Module Baseboard	1	Purchase Samples
Microphone	Audio Capture	1	Purchase Samples
Speaker	Audio Playback	1	Purchase Samples
USB Type-C Cable	Connect to Computer for Firmware Programming and Power	1	Mobile phone data cable or self-purchased

Connection Diagram¶

The connection diagram for this example is shown below:

Figure 8 Development Board Demonstration Connection Diagram

Connection method:

Insert the CI-F24XGS01S module board into the position marked by red box 1 in the figure above, paying attention to the correct orientation (already connected when shipped);
Connect the microphone to the socket marked by red box 2 in the figure above (note: align MIC+ with MIC+ and MIC- with MIC- according to the silkscreen), with the black wire oriented toward the speaker socket;
Connect the speaker to the socket marked by red box 3 in the figure above (no polarity needed).

Operation Steps¶

After connecting the development kit according to the connection diagram above, follow these steps to operate:

Connect one end of the Type-C cable to a computer or 5V charger USB port, and the other end to the power interface of the baseboard (marked by red box 3 in the connection diagram);
Press the power switch (marked by red box 4 in the connection diagram). When the red LED on the baseboard lights up (marked by red box 5 in the connection diagram), it indicates that the power is on;
After powering on, you will hear “Welcome to Smart Butler, you can wake me up by saying ‘Smart Butler’“. At this point, say “Smart Butler” and you should hear the development board respond with “Hello,” indicating that the module, power supply, microphone, and speaker are all properly connected;
If any abnormalities occur, please refer to the “Frequently Asked Questions” section at the end of this document. If problems persist, please contact our technical support team for assistance.

Standard Module Command Words and Corresponding Voice Responses¶

Our standard modules come pre-programmed with standard firmware. To use, first say the wake word “Smart Butler”. After hearing the response “Hello,” you can then say other command words. When you hear “Thank you for using,” it means the device has exited the wake state and you’ll need to say “Smart Butler” to wake it again.

The following table lists the command words and their corresponding voice responses in our standard firmware:

Note: Some command words may be added or removed based on specific requirements without prior notice.

Table 3 Command Words and Corresponding Voice Responses in Standard Firmware

Command Word	Response	Command Word	Response
Smart Butler (Wake Word)	Hello	30 degrees	Okay, 30 degrees
Turn on air conditioner	Okay, turning on air conditioner	Turn on desk lamp	Okay, turning on desk lamp
Turn off air conditioner	Okay, turning off air conditioner	Turn off desk lamp	Okay, turning off desk lamp
Increase fan speed	Okay, increasing fan speed	Maximum brightness	Okay, maximum brightness
Decrease fan speed	Okay, decreasing fan speed	Medium brightness	Okay, medium brightness
Increase temperature by 1°C	Okay, increasing by 1°C	Minimum brightness	Okay, minimum brightness
Decrease temperature by 1°C	Okay, decreasing by 1°C	Brighten a bit	Okay, brightening a bit
Full auto mode	Okay, full auto mode	Dim a bit	Okay, dimming a bit
Air supply mode	Okay, air supply mode	Lighting mode	Okay, lighting mode
Energy saving mode	Okay, energy saving mode	Reading mode	Okay, reading mode
Turn off energy saving mode	Okay, turning off energy saving mode	Night light mode	Okay, night light mode
Dehumidification mode	Okay, dehumidification mode	Red mode	Okay, red mode
Turn off dehumidification	Okay, turning off dehumidification	Green mode	Okay, green mode
Electric heating	Okay, electric heating	Blue mode	Okay, blue mode
Turn off electric heating	Okay, turning off electric heating	Color mode	Okay, color mode
Air refresh	Okay, air refresh	Turn on master bedroom light	Okay, turning on master bedroom light
Air purification	Okay, air purification	Turn off master bedroom light	Okay, turning off master bedroom light
Turn off air refresh	Okay, turning off air refresh	Turn on garden light	Okay, turning on garden light
Sleep mode	Okay, sleep mode	Turn off garden light	Okay, turning off garden light
Turn off sleep mode	Okay, turning off sleep mode	Turn on guest room light	Okay, turning on guest room light
Timer one hour	Okay, setting timer for one hour	Turn off guest room light	Okay, turning off guest room light
Timer two hours	Okay, setting timer for two hours	Turn on dining room light	Okay, turning on dining room light
Swing left and right	Okay, swinging left and right	Turn off dining room light	Okay, turning off dining room light
Swing up and down	Okay, swinging up and down	Turn on bathroom light	Okay, turning on bathroom light
Stop swinging	Okay, stopping swing	Turn off bathroom light	Okay, turning off bathroom light
Minimum fan speed	Okay, minimum fan speed	Turn on garden light	Okay, turning on garden light
High fan speed	Okay, high fan speed	Turn on balcony light	Okay, turning on balcony light
Maximum fan speed	Okay, maximum fan speed	Turn off balcony light	Okay, turning off balcony light
Turbo fan speed	Okay, turbo fan speed	Turn on study light	Okay, turning on study light
Lower fan speed	Okay, lowering fan speed	Turn off study light	Okay, turning off study light
Higher fan speed	Okay, increasing fan speed	Louder	Okay, volume up
16°C	Okay, 16 degrees	Increase volume	Okay, increasing volume
17°C	Okay, 17 degrees	Volume up	Okay, volume up
18°C	Okay, 18 degrees	Speak louder	Okay, speaking louder
19°C	Okay, 19 degrees	Softer	Okay, speaking softer
20°C	Okay, 20 degrees	Decrease volume	Okay, decreasing volume
21°C	Okay, 21 degrees	Volume down	Okay, volume down
22°C	Okay, 22 degrees	Speak softer	Okay, speaking softer
23°C	Okay, 23 degrees	Maximum volume	Okay, maximum volume
24°C	Okay, 24 degrees	Volume maximum	Okay, volume maximum
25°C	Okay, 25 degrees	Minimum volume	Okay, minimum volume
26°C	Okay, 26 degrees	Volume minimum	Okay, volume minimum
27°C	Okay, 27 degrees
28°C	Okay, 28 degrees
29°C	Okay, 29 degrees

Controlling the RGB LED on the Baseboard¶

This development kit allows you to control the RGB LED on the baseboard using voice commands. This feature is available on both CI-F242GS01S and CI-F241GS01S modules.

After connecting the hardware as described above, follow these steps:

Connect the microphone and speaker;
Use jumper caps to connect the control pins of the RGB LED as shown in the red boxes in the figure below.

Figure 9 Jumper Cap Connections for RGB LED Control

After the hardware connections are complete, you can write code to implement the control. You’ll need the SDK for development:

For CI-F241GS01S or CI-F242GS01S modules, please download the CI13LC chip SDK: ☞CI13LC Chip SDK

For software development information, click: ☞CI13LC Chip SDK

After completing the firmware development, you’ll need to update the firmware. Please refer to the following document for the specific operation:

☞Programming and Debugging Methods

Note: When referring to the “Programming and Debugging Methods” document, please note the following:

Since the baseboard has a built-in USB-to-serial converter, you can start from the second paragraph of section 1.1 in the document;
The PG_EN pin refers to the red box labeled 10 in the ‘Baseboard Interface and Application Instructions’ section of the document.

After the module programming is complete, power cycle the device and verify that the power-on voice prompt is normal, the device can be woken up, and it can respond to command words and control the LED. Once these are confirmed, the development is complete.

Important Application Notes¶

The baseboard’s power supply voltage specification is 5V±5%, and the power supply’s rated current should be greater than 500mA. Otherwise, when the speaker is operating, it may cause insufficient power supply to the voice module, leading to abnormal functionality;
The baseboard and voice module should be stored and operated within a temperature range of 0-85°C;
All communication interfaces of the baseboard kit operate at 3.3V logic levels. When connecting to external devices, ensure the external device also uses 3.3V logic levels, or use a level conversion circuit if necessary;
If you have any questions about the baseboard or voice module, or have special application/development requirements, please consult our technical support team.

Frequently Asked Questions¶

No.	Issue	Troubleshooting Steps
1	No audio output	1. Check if the speaker is connected to the correct port (refer to the connection diagram above); 2. Check if the power indicator is lit. If not, verify that the power supply is providing the correct 5V; 3. Ensure the power button is in the released (on) position.
2	No response after saying “Smart Butler”	1. Verify the microphone is connected to the correct terminal (refer to connection diagram 8 above); 2. Check that the speaker is connected to the correct terminal (refer to connection diagram 8 above); 3. Try to use standard Mandarin pronunciation; 4. Restart the device and check if it works normally.
3	Computer cannot detect serial port	1. Check if the power indicator is lit. If not, verify the power supply is providing the correct 5V; 2. Ensure the power button is in the released (on) position; 3. Try flipping the orientation of the Type-C cable connected to the baseboard.