73 lines
2.8 KiB
Plaintext
73 lines
2.8 KiB
Plaintext
/**
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@page CAN_LoopBack CAN LoopBack example
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@verbatim
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******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
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* @file CAN/CAN_LoopBack/Readme.txt
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* @author MCD Application Team
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* @brief Description of the CAN LoopBack example.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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@endverbatim
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@par Example Description
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How to set up a communication with the CAN in loopback mode.
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The CAN cell first performs a transmission and a reception of a standard data
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frame by polling at 1MB/s. The received frame is checked and some LEDs light
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up to indicate whether the communication was successful.
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STM32 Eval board's LEDs can be used to monitor the transfer status:
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- LED1 is ON when the transfer is complete.
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- LED2 is ON when there are an error of the transfer.
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- LED3 is ON when there are an error in initialisation.
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@note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds)
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based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from
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a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower)
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than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
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To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
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@note The application needs to ensure that the SysTick time base is always set to 1 millisecond
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to have correct HAL operation.
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@par Directory contents
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- CAN/CAN_LoopBack/Inc/stm32f2xx_hal_conf.h HAL configuration file
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- CAN/CAN_LoopBack/Inc/stm32f2xx_it.h Interrupt handlers header file
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- CAN/CAN_LoopBack/Inc/main.h Main program header file
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- CAN/CAN_LoopBack/Src/stm32f2xx_it.c Interrupt handlers
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- CAN/CAN_LoopBack/Src/main.c Main program
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- CAN/CAN_LoopBack/Src/stm32f2xx_hal_msp.c HAL MSP module
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- CAN/CAN_LoopBack/Src/system_stm32f2xx.c STM32F2xx system clock configuration file
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@par Hardware and Software environment
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- This example runs on STM32F207xx/217xx device.
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- This example has been tested with STM322xG-EVAL evaluation board and can be
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easily tailored to any other supported device and development board.
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@par How to use it ?
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In order to make the program work, you must do the following :
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- Open your preferred toolchain
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- Rebuild all files and load your image into target memory
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- Run the example
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*/
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