stm32f30x_can.c File Reference

This file provides firmware functions to manage the following functionalities of the Controller area network (CAN) peripheral: + Initialization and Configuration + CAN Frames Transmission + CAN Frames Reception + Operation modes switch + Error management + Interrupts and flags. More...

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Detailed Description

This file provides firmware functions to manage the following functionalities of the Controller area network (CAN) peripheral: + Initialization and Configuration + CAN Frames Transmission + CAN Frames Reception + Operation modes switch + Error management + Interrupts and flags.

Author:

MCD Application Team

Version:

V1.2.3

Date:

10-July-2015

                               
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                      ##### How to use this driver #####
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    [..]
    (#) Enable the CAN controller interface clock using 
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);      
    (#) CAN pins configuration:
        (++) Enable the clock for the CAN GPIOs using the following function:
             RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOx, ENABLE);   
        (++) Connect the involved CAN pins to AF9 using the following function 
             GPIO_PinAFConfig(GPIOx, GPIO_PinSourcex, GPIO_AF_CANx); 
        (++) Configure these CAN pins in alternate function mode by calling
             the function  GPIO_Init();
    (#) Initialize and configure the CAN using CAN_Init() and 
        CAN_FilterInit() functions.   
    (#) Transmit the desired CAN frame using CAN_Transmit() function.
    (#) Check the transmission of a CAN frame using CAN_TransmitStatus() function.
    (#) Cancel the transmission of a CAN frame using CAN_CancelTransmit() function.  
    (#) Receive a CAN frame using CAN_Recieve() function.
    (#) Release the receive FIFOs using CAN_FIFORelease() function.
    (#) Return the number of pending received frames using CAN_MessagePending() function.            
    (#) To control CAN events you can use one of the following two methods:
        (++) Check on CAN flags using the CAN_GetFlagStatus() function.  
        (++) Use CAN interrupts through the function CAN_ITConfig() at initialization 
             phase and CAN_GetITStatus() function into interrupt routines to check 
             if the event has occurred or not.
             After checking on a flag you should clear it using CAN_ClearFlag()
             function. And after checking on an interrupt event you should clear it 
             using CAN_ClearITPendingBit() function.            
                 
  

Attention:

© COPYRIGHT 2015 STMicroelectronics

Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at:

http://www.st.com/software_license_agreement_liberty_v2

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Definition in file stm32f30x_can.c.