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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.15
mikroSDK Library: 2.0.0.0
Category: CAN
Downloaded: 259 times
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License: MIT license
CAN Bus Click is a compact add-on board that provides a link between the CAN protocol controller and the physical wires of the bus lines in a control area network (CAN). This board features the MAX13054, an industry-standard, high-speed CAN transceiver with extended ±80V fault protection from Maxim Integrated.
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4467_can_bus_click.zip [532.22KB] | mikroC AI for ARM GCC for ARM Clang for ARM mikroC AI for PIC mikroC AI for PIC32 XC32 GCC for RISC-V Clang for RISC-V mikroC AI for dsPIC XC16 |
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CAN Bus Click is a compact add-on board that provides a link between the CAN protocol controller and the physical wires of the bus lines in a control area network (CAN). This board features the MAX13054, an industry-standard, high-speed CAN transceiver with extended ±80V fault protection from Maxim Integrated.
We provide a library for the CanBus 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE github account.
This library contains API for CanBus Click driver.
canbus_cfg_setup
Config Object Initialization function.
void canbus_cfg_setup ( canbus_cfg_t *cfg );
canbus_init
Initialization function.
CANBUS_RETVAL canbus_init ( canbus_t *ctx, canbus_cfg_t *cfg );
canbus_default_cfg
Click Default Configuration function.
void canbus_default_cfg ( canbus_t *ctx );
canbus_send_data
CAN Bus send data function.
err_t canbus_send_data ( canbus_t *ctx, char *tx_data );
canbus_set_high_speed_mode
CAN Bus high speed mode function.
err_t canbus_set_high_speed_mode ( canbus_t *ctx );
canbus_set_low_current_standby_mode
CAN Bus low current standby mode function.
err_t canbus_set_low_current_standby_mode ( canbus_t *ctx );
This library contains API for CAN Bus Click board™. This example transmits/receives and processes data from CAN Bus Click. The library initializes and defines the UART bus drivers to transmit or receive data.
The demo application is composed of two sections :
Initializes driver, wake-up module, and set high-speed operation mode.
void application_init ( void ) {
log_cfg_t log_cfg; /**< Logger config object. */
canbus_cfg_t canbus_cfg; /**< Click config object. */
/**
* 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.
canbus_cfg_setup( &canbus_cfg );
CANBUS_MAP_MIKROBUS( canbus_cfg, MIKROBUS_1 );
err_t init_flag = canbus_init( &canbus, &canbus_cfg );
if ( init_flag == UART_ERROR ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
canbus_default_cfg ( &canbus );
app_buf_len = 0;
app_buf_cnt = 0;
log_info( &logger, " Application Task " );
Delay_ms ( 100 );
canbus_set_high_speed_mode( &canbus );
Delay_ms ( 100 );
#ifdef TRANSMIT
log_printf( &logger, " Send data: \r\n" );
log_printf( &logger, " MikroE \r\n" );
log_printf( &logger, "------------------\r\n" );
log_printf( &logger, " Transmit data \r\n" );
Delay_ms ( 1000 );
#endif
#ifdef RECIEVER
log_printf( &logger, " Receive data \r\n" );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
#endif
log_printf( &logger, "------------------\r\n" );
}
Transmitter/Receiver task depends on uncommented code. Receiver logging each received byte to the UART for data logging, while transmitted send messages every 2 seconds.
void application_task ( void ) {
#ifdef TRANSMIT
canbus_send_data( &canbus, demo_message );
log_printf( &logger, "\t%s", demo_message );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_printf( &logger, "------------------\r\n" );
#endif
#ifdef RECIEVER
canbus_process( );
if ( app_buf_len > 0 ) {
log_printf( &logger, "%s", app_buf );
canbus_clear_app_buf( );
}
#endif
}
canbus_clear_app_buf
Function clears memory of app_buf.
static void canbus_clear_app_buf ( void );
canbus_process
The general process of collecting presponce that a module sends.
static err_t canbus_process ( void );
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on mikroE github account.
Other mikroE Libraries used in the example:
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. UART terminal is available in all Mikroelektronika compilers.