ARTERY AT32-Comm-EV Manuel utilisateur

AT32-Comm-EV User Manual

2022.5.7 1Rev 1.00

AT32-Comm-EV evaluation board

Introduction

The AT32-Comm-EV evaluation board is designed to help users speed up the development of

communication application solutions. It features CAN and RS-485 transceivers, I2C and SPI

connectors. The board can be connected to Artery’s AT-START board or other compatible control

boards through standard ArduinoTM Uno R3 connectors.

AT32-Comm-EV User Manual

2022.5.7 2Rev 1.00

Contents

1Hardware layout and configuration ..................................................................... 5

2Arduino connectors............................................................................................... 7

3How to use AT32-Comm-EV.................................................................................. 9

4Schematics ........................................................................................................... 10

5Revision history................................................................................................... 13

AT32-Comm-EV User Manual

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List of tables

Table 1. ArduinoTM Uno R3 connectors definition................................................................................7

Table 2. Document revision history....................................................................................................13

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List of figures

Figure 1. Top layer layout ....................................................................................................................5

Figure 2. Bottom layer layout...............................................................................................................6

Figure 3. Schematic diagram (power supply, I2C and SPI) ...............................................................10

Figure 4. Schematic diagram (RS-485 and CAN) ............................................................................. 11

Figure 5. Schematic diagram (Arduino UNO R3 extension connectors) ..........................................12

AT32-Comm-EV User Manual

2022.5.7 5Rev 1.00

1 Hardware layout and configuration

The AT32-Comm-EV board is connected to the AT-START board through ArduinoTM connectors. In

this way, the EV board is able to access the CAN, USART, I2C and SPI on embedded AT32 MCU

on AT-START board. This document uses AT-START-F403A board as an example to demonstrate

various functions.

In addition to the embedded AT32 MCU, the AT-START board offers standard ArduinoTM Uno R3

extension connectors to be connected to the AT32-Comm-EV board.

JP1 and JP2 are used to configure whether to turn on 120 Ω termination resistors of the CAN and

RS-485 transceivers, respectively. They are ON by default. The users are allowed to adjust the

resistors according to their needs.

Figure 1and Figure 2 show these features on the AT32-Comm-EV board.

Figure 1. Top layer layout

SPI

connector

RS-485

transceiver

CAN

transceiver

I2C

connector

CAN

connector

RS-485

connector

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Figure 2. Bottom layer layout

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2 Arduino connectors

Table 1. ArduinoTM Uno R3 connectors definition

Connector

No.

号

Arduino

pin name

AT32F403A

pin name

Function

Description

(power

supply)

IOREF

3.3 V reference voltage

RESET

NRST

External reset

3.3V

3.3 V input/output

3.3 V power supply

5 V input/output

5 V power supply

GND

Ground

GND

Ground

VIN

7~12 V input/output

(analog

input)

PA0

ADC123_IN0

PA1

ADC123_IN1

USART2_RTS_DE or GPIO

PA4

ADC12_IN4

PB0

ADC12_IN8

PC1 or PB9

ADC123_IN11 or

I2C1_SDA

PC0 or PB8

ADC123_IN10 or

I2C1_SCL

(logic

input/output

low bytes)

PA3

USART2_RX

PA2

USART2_TX

PA10

PB3

TMR2_CH2

PB5

PB4

TMR3_CH1

PB10

TMR2_CH3

I2C2_SCL

PA8

(logic

input/output

high bytes)

PA9

PC7

TMR3_CH2

D10

PA15 or PB6

SPI1_NSS or TMR4_CH1

D11

PA7

TMR3_CH2 or SPI1_MOSI

D12

PA6

SPI1_MISO

D13

PA5

SPI1_SCK

GND

Ground

AREF

VREF+ input/output

SDA

PB9

I2C1_SDA

CAN1_TX

SCL

PB8

I2C1_SCL

CAN1_RX

AT32-Comm-EV User Manual

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Connector

No.

号

Arduino

pin name

AT32F403A

pin name

Function

Description

(others)

MISO

PB14

SPI2_MISO

5 V input/output

5 V power supply

SCK

PB13

SPI2_SCK

MOSI

PB15

SPI2_MOSI

RESET

NRST

External reset

GND

Ground

PB12

SPI2_CS

PB11

I2C2_SDA

AT32-Comm-EV User Manual

2022.5.7 9Rev 1.00

3 How to use AT32-Comm-EV

Insert the AT32-Comm-EV board into the Arduino connectors on AT-START board so that two

parts are connected together. After successful connection, supply 5 V and 3.3 V for the combined

board according to the descriptions of Power supply section of the AT-START user manual. Then it

is ready to use the AT32-Comm-EV board, in which the CN1 is used to connect to SPI device, the

CN2 to I2C device, CN3 to RS-485, and CN4 to CAN.

Example codes regarding AT32-Comm-EV board can be found in BSP, including:

CAN example code:

AT32xxx_Firmware_Library_V2.x.x\project\at_start_xxx\examples\can\communication_mode；

RS-485 example code:

AT32xxx_Firmware_Library_V2.x.x\project\at_start_xxx\examples\usart\rs485；

I2C example code:

AT32xxx_Firmware_Library_V2.x.x\project\at_start_xxx\examples\i2c\eeprom；

SPI example code:

AT32xxx_Firmware_Library_V2.x.x\project\at_start_xxx\examples\spi\w25q_flash。

A A

B B

C C

D D

Title:

Power & I2C& SPI REV: 1.0

Date: 2022-05-07

Sheet: 1

Drawn By:

Company: Artery Technology

100R

R12

100R

R13

1.8K

R10

1.8K

R11

PB14

PB13

NRST

PB12

PB15

PB11

Reset

To Device

PB10

+3V3

100RR7

100RR5

100RR9

100RR6

100RR8

+5V

GND

E3.3V+3V3

GND EGND

0RR1

EGND EGND EGND EGND EGND

EGND EGND

4.7uF

C5 4.7uF

0.1uF

E3.3V

PB12/SPI2_NSS

PB14/USART3_RTS/SPI2_MISO

PB15/SPI2_MOSI

PB13/USART3_CTS/SPI2_SCK

PB11/USART3_RX/I2C2_SDA

PB10/USART3_TX/I2C2_SCL

SPI

Header 4

CN2

SMBJ3.3A

EGND

GND

Green

LED1

GND

4.7uF

SMD0603B050TF

E3.3V

EGND

Header 7

CN1

ME6211C33M5G-N

VIN

VSS

3NC 4

VOUT 5

ESD5341N-2/TR

D3 D4 D5 D6 D7

ESD5341N-2/TR

I2C

AT32-Comm-EV User Manual

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4 Schematics

Figure 3. Schematic diagram (power supply, I2C and SPI)

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