picovoice_driver: stm32f4xx_hal_can.c File Reference

This file provides firmware functions to manage the following functionalities of the Controller Area Network (CAN) peripheral: More...

#include "stm32f4xx_hal.h"

Include dependency graph for stm32f469/stm32f469i-disco/Drivers/STM32F4xx_HAL_Driver/Src/Legacy/stm32f4xx_hal_can.c:

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Detailed Description

This file provides firmware functions to manage the following functionalities of the Controller Area Network (CAN) peripheral:

Author

MCD Application Team

Initialization and de-initialization functions
IO operation functions
Peripheral Control functions
Peripheral State and Error functions

==============================================================================
                               ##### User NOTE #####
==============================================================================
  [..]
    (#) This HAL CAN driver is deprecated, it contains some CAN Tx/Rx FIFO management limitations.
        Another HAL CAN driver version has been designed with new API's, to fix these limitations.

==============================================================================
                      ##### How to use this driver #####
==============================================================================
  [..]            
    (#) Enable the CAN controller interface clock using 
        __HAL_RCC_CAN1_CLK_ENABLE() for CAN1, __HAL_RCC_CAN2_CLK_ENABLE() for CAN2
       and __HAL_RCC_CAN3_CLK_ENABLE() for CAN3
    -@- In case you are using CAN2 only, you have to enable the CAN1 clock.
     
    (#) CAN pins configuration
      (++) Enable the clock for the CAN GPIOs using the following function:
           __GPIOx_CLK_ENABLE()   
      (++) Connect and configure the involved CAN pins to AF9 using the 
            following function HAL_GPIO_Init() 
            
    (#) Initialize and configure the CAN using CAN_Init() function.   
               
    (#) Transmit the desired CAN frame using HAL_CAN_Transmit() function.

    (#) Or transmit the desired CAN frame using HAL_CAN_Transmit_IT() function.
         
    (#) Receive a CAN frame using HAL_CAN_Receive() function.

    (#) Or receive a CAN frame using HAL_CAN_Receive_IT() function.

   *** Polling mode IO operation ***
   =================================
   [..]    
     (+) Start the CAN peripheral transmission and wait the end of this operation 
         using HAL_CAN_Transmit(), at this stage user can specify the value of timeout
         according to his end application
     (+) Start the CAN peripheral reception and wait the end of this operation 
         using HAL_CAN_Receive(), at this stage user can specify the value of timeout
         according to his end application 
     
   *** Interrupt mode IO operation ***    
   ===================================
   [..]    
     (+) Start the CAN peripheral transmission using HAL_CAN_Transmit_IT()
     (+) Start the CAN peripheral reception using HAL_CAN_Receive_IT()         
     (+) Use HAL_CAN_IRQHandler() called under the used CAN Interrupt subroutine
     (+) At CAN end of transmission HAL_CAN_TxCpltCallback() function is executed and user can 
          add his own code by customization of function pointer HAL_CAN_TxCpltCallback 
     (+) In case of CAN Error, HAL_CAN_ErrorCallback() function is executed and user can 
          add his own code by customization of function pointer HAL_CAN_ErrorCallback

   *** CAN HAL driver macros list ***
   ============================================= 
   [..]
     Below the list of most used macros in CAN HAL driver.
     
    (+) __HAL_CAN_ENABLE_IT: Enable the specified CAN interrupts
    (+) __HAL_CAN_DISABLE_IT: Disable the specified CAN interrupts
    (+) __HAL_CAN_GET_IT_SOURCE: Check if the specified CAN interrupt source is enabled or disabled
    (+) __HAL_CAN_CLEAR_FLAG: Clear the CAN's pending flags
    (+) __HAL_CAN_GET_FLAG: Get the selected CAN's flag status

   [..]
    (@) You can refer to the CAN Legacy HAL driver header file for more useful macros

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Definition in file stm32f469/stm32f469i-disco/Drivers/STM32F4xx_HAL_Driver/Src/Legacy/stm32f4xx_hal_can.c.

Detailed Description

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