TOP Contributors

  1. MIKROE (2784 codes)
  2. Alcides Ramos (405 codes)
  3. Shawon Shahryiar (307 codes)
  4. jm_palomino (133 codes)
  5. Bugz Bensce (97 codes)
  6. S P (73 codes)
  7. dany (71 codes)
  8. MikroBUS.NET Team (35 codes)
  9. NART SCHINACKOW (34 codes)
  10. Armstrong Subero (27 codes)

Most Downloaded

  1. Timer Calculator (141292 times)
  2. FAT32 Library (74089 times)
  3. Network Ethernet Library (58715 times)
  4. USB Device Library (48826 times)
  5. Network WiFi Library (44525 times)
  6. FT800 Library (44074 times)
  7. GSM click (30805 times)
  8. mikroSDK (29659 times)
  9. PID Library (27355 times)
  10. microSD click (27251 times)
Libstock prefers package manager

Package Manager

We strongly encourage users to use Package manager for sharing their code on Libstock website, because it boosts your efficiency and leaves the end user with no room for error. [more info]

< Back
mikroSDK Library

RS485 5 Click

Rating:

0

Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.13

mikroSDK Library: 2.0.0.0

Category: RS485

Downloaded: 472 times

Not followed.

License: MIT license  

The RS485 5 Click is a Click board™ equipped with the MAX485, low-power, slew-rate-limited transceiver for RS-485 and RS-422 communication, from Maxim Integrated. This device supports half-duplex RS-485 communication and can be used as an interface between the TTL level UART and the RS485 communication bus.

No Abuse Reported

Do you want to subscribe in order to receive notifications regarding "RS485 5 Click" changes.

Do you want to unsubscribe in order to stop receiving notifications regarding "RS485 5 Click" changes.

Do you want to report abuse regarding "RS485 5 Click".

  • mikroSDK Library 1.0.0.0
  • Comments (0)

mikroSDK Library Blog


RS485 5 Click

The RS485 5 Click is a Click board™ equipped with the MAX485, low-power, slew-rate-limited transceiver for RS-485 and RS-422 communication, from Maxim Integrated. This device supports half-duplex RS-485 communication and can be used as an interface between the TTL level UART and the RS485 communication bus.

rs4855_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Jun 2020.
  • Type : UART type

Software Support

We provide a library for the Rs4855 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Rs4855 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void rs4855_cfg_setup ( rs4855_cfg_t *cfg );

  • Initialization function.

    RS4855_RETVAL rs4855_init ( rs4855_t ctx, rs4855_cfg_t cfg );

Example key functions :

  • Generic write function.

    void rs4855_generic_write ( rs4855_t ctx, char data_buf, uint16_t len );

  • Sets DE pin to high or low state

    void rs4855_set_de_state( rs4855_t *ctx, uint8_t state );

  • Sets RE pin to high or low state

    void rs4855_set_re_state( rs4855_t *ctx, uint8_t state );

Examples Description

This example reads and processes data from RS485 5 clicks.

The demo application is composed of two sections :

Application Init

Initializes the driver and enables the selected mode.


void application_init ( void )
{
    log_cfg_t log_cfg;
    rs4855_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    rs4855_cfg_setup( &cfg );
    RS4855_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rs4855_init( &rs4855, &cfg );

    Delay_ms ( 100 );

#ifdef DEMO_APP_RECEIVER
    rs4855_set_re_state( &rs4855, RS4855_PIN_STATE_LOW );
    rs4855_set_de_state( &rs4855, RS4855_PIN_STATE_LOW );
    log_info( &logger, "---- Receiver mode ----" );
#endif    
#ifdef DEMO_APP_TRANSMITTER
    rs4855_set_re_state( &rs4855, RS4855_PIN_STATE_HIGH );
    rs4855_set_de_state( &rs4855, RS4855_PIN_STATE_HIGH );
    log_info( &logger, "---- Transmitter mode ----" );
#endif    
}

Application Task

Depending on the selected mode, it reads all the received data or sends the desired message every 2 seconds.


void application_task ( void )
{
#ifdef DEMO_APP_RECEIVER
    rs4855_process( );
#endif    

#ifdef DEMO_APP_TRANSMITTER
    rs4855_generic_write( &rs4855, TEXT_TO_SEND, 8 );
    log_info( &logger, "---- Data sent ----" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#endif  
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Rs4855

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB 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.


ALSO FROM THIS AUTHOR

Buck click

1

BUCK click is a buck switching regulator that accepts a wide input voltage range of up to 40V and steps it down to 3.3V or 5V. The click carries the LT3976 40V, 5A, 2MHz step-down switching regulator with 3.3µA quiescent current.

[Learn More]

OBDII Click

0

OBDII Click offers a unique opportunity to tap into the car diagnostic systems. It features the STN1110 Multiprotocol OBD to UART Interface, developed by the ScanTool technologies. This Click can be used for the communication with the Electronic Control Unit (ECU) of a vehicle, via several different OBD II diagnostic protocols such as CAN, K LINE, L LINE and J1850. The STN1110 IC is used to process requests sent by the MCU via the UART interface and return back the responses from the ECU network nodes.

[Learn More]

4-20 mA T Click

0

This aplication changes the value of the output current

[Learn More]