CAN FD Click

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  • MIKROE-3933
  • 3933
CAN FD Click  is a add-on board based on TLE9252V CAN network transceiver, designed for HS... more
Product information "CAN FD Click"

CAN FD Click is a add-on board based on TLE9252V CAN network transceiver, designed for HS CAN networks up to 5 Mbit/s in automotive and industrial applications. As an interface between the physical bus layer and the CAN protocol controller, the TLE9252V drives the signals to the bus and protects the microcontroller against interferences generated within the network. Given all the features its components offer, the CAN FD Click is best used for for infotainment applications, cluster modules, radar applications and HVAC.

CAN FD Click board™ is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.

HOW DOES IT WORK?

CAN FD Click features TLE9252V high speed CAN network transceiver from Infineon. HS CAN is a serial bus system which connects microcontrollers, sensors and actuators for real-time control applications. The TLE9252V supports both Bus Wake-up Pattern (WUP) functionality and Local Wake-up, as well as CAN Flexible data rate transmission up to 5Mbit/s. Additionally, the TLE9252V supports CAN Flexible data rate (CAN FD) transmission up to 5 Mbit/s The TLE9252V also has an integrated over temperature detection to protect the TLE9252V against thermal overstress of the transmitter.

Click Boards Interface CAN CAN FD Click

The CAN FD Click supports five different Modes of operation. Each mode with specific characteristics in terms of quiescent current, data transmission or failure diagnostic. For the mode selection the digital input pins EN and STB are used.

  • Normal-operating mode - all functions of the TLE9252V are available and the device is fully functional.
  • Receive-only mode - the transmitter is disabled and the receiver is enabled.
  • Stand-by Mode is a low power mode of the TLE9252V and the transmitter and the receiver are disabled.
  • Sleep Mode - is a low power mode of the TLE9252V. In Sleep Mode the current consumption is reduced to a minimum while the device is still able to detect a Wake-Up Pattern on WKE pin.
  • Go-to-Sleep command- is a transition mode allowing external circuitry like a microcontroller to prepare the ECU to go to Sleep Mode.

The HS CAN transceiver TLE9252V includes a receiver and a transmitter unit, allowing the transceiver to send data to the bus medium and monitors the data from the bus medium at the same time by suing two wires. The TLE9252V converts the serial data stream which is available on the transmit data input TxD, into a differential output signal on the CAN bus, provided by the CANH and CANL pins.

Given all the features its components offer, the CAN FD Click is best used for for infotainment applications, cluster modules, radar applications and HVAC. The onboard SMD jumper labeled as the VIO SEL is used to select which voltage rail will be used as the logic voltage level. It offers voltage selection between 3.3V and 5V so that the click board™ can be interfaced with both the 3.3V and 5V capable MCUs. The two UART wires (RX and TX) can also be connected directly through two pins on the left edge of the board. With R5 and R6 jumpers populated alows you to use click board with standard 12V battery connected on battery pads at right side of board.

SPECIFICATIONS

Type CAN
Applications Infotainment applications, cluster modules, radar applications and HVAC
On-board modules TLE9252V, a transceiver designed for HS CAN networks up to 5 Mbit/s in automotive and industrial applications from Infineon
Key Features Fail safe features like TxD time-out, RxD Recessive Clamping and Overtemperature shut-down, Very low electromagnetic emission (EME), Dual Power Supply Solution or Undervoltage detection
Interface GPIO,UART
Compatibility mikroBUS
Click board size L (57.15 x 25.4 mm)
Input Voltage 3.3V or 5V

 

PINOUT DIAGRAM

This table shows how the pinout on CAN FD Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
  NC 1 AN PWM 16 WKE Wake up
Stand-by STB 2 RST INT 15 ERR Error flag
Mode control EN 3 CS RX 14 TX UART Transmit
  EN 4 SCK TX 13 RX UART Receive
  NC 5 MISO SCL 12 NC  
  NC 6 MOSI SDA 11 NC  
Power Supply 3.3V 7 3.3V 5V 10 5V Power supply
Ground GND 8 GND GND 9 GND Ground

ONBOARD SETTINGS AND INDICATORS

LabelNameDefault Description
PWR LED GREEN - Power LED Indicator
SW SW Down Wake up switch sensitive on rising and falling edge
VIO SEL - Left VIO voltage select
R5, R6 - NP Jumpers for battery usage

SOFTWARE SUPPORT

We provide a library for the CAN FD Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

The library covers all the necessary functions to control CAN FD click board. Library performs a standard UART communication.

Key functions:

  • canfd_byte_ready( ) - Write Single Byte
  • uint8_t canfd_read_byte( ) - Read Single Byte.
  • void canfd_set_operating_mode ( uint8_t op_mode ) - Set operating mode function.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes UART, sets ERR ( INT ) pin as input and STB ( RST ) and EN ( CS ) pins as output, begins to write a log.
  • Application Initialization - Initialization driver enables - UART, performs an app mode, also write log.
  • Application Task - (code snippet) This is an example that demonstrates the use of the CAN FD click board. This application task writes message data via UART. In the second case, checks if new data byte have received in RX buffer ( ready for reading ), and if ready than reads one byte from RX buffer. Results are being sent to the Usart Terminal where you can track their changes.
void application_task ( )
{
char tmp;
uint8_t drdy_flag;
if ( app_mode == APP_MODE_RECEIVER )
{
// RECEIVER - UART polling
drdy_flag = canfd_byte_ready( );
if ( 1 == drdy_flag )
{
tmp = canfd_read_byte( );
mikrobus_logWrite( &tmp, _LOG_BYTE );
}
}
else
{
// TRANSMITER - TX each 2 sec
mikrobus_logWrite( " TX data: ", _LOG_TEXT );
Delay_ms( 1000 );
for ( tmp = 0; tmp < 9; tmp++ )
{
canfd_write_byte( demo_message_data[ tmp ] );
mikrobus_logWrite( &demo_message_data[ tmp ], _LOG_BYTE );
Delay_ms( 200 );
}
mikrobus_logWrite( "------------------", _LOG_LINE );
Delay_ms( 2000 );
}
}

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

MIKROSDK

This Click board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.

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