文件列表:

CAN_Networking (0, 2011-11-21)
CAN_Networking\main.c (8866, 2011-11-21)
CAN_Networking\main.h (2101, 2011-11-17)
CAN_Networking\stm8s_conf.h (4529, 2011-11-17)
CAN_Networking\stm8s_it.c (13341, 2011-11-21)
CAN_Networking\stm8s_it.h (5365, 2011-11-17)

/** @page Networking Networking with CAN to control Leds @verbatim ******************** (C)COPYRIGHT 2011 STMicroelectronics ******************* * @file CAN/CAN_Networking/readme.txt * @author MCD Application Team * @version V2.1.0 * @date 18-November-2011 * @brief This file contains the main function for CAN networking example. ****************************************************************************** * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. ****************************************************************************** @endverbatim @par Example description This example provides a short description of how to use the CAN peripheral: CAN peripheral is configured to send and receive CAN frames. The sent frames are used to control Leds. An LCD is used to give information about : - CAN sender (sender of the frame) - CAN receiver (receiver of the frame) - Controlled Led (set ON) The CAN serial communication link is a bus to which a number of units may be connected. This number has no theoretical limit. Practically the total number of units will be limited by delay times and/or electrical loads on the bus line. @note This example is tested with a bus of 3 units. The same program example is loaded in all units to send and receive frames. CAN is configured as follow: - Bit Rate = 1 Mbit/s - CAN Clock = Internal (HSI) - ID Filter = All identifiers are allowed - RTR = Data - DLC = 1 byte @par Directory contents - CAN\CAN_Networking\main.c Main file containing the "main" function - CAN\CAN_Networking\main.h Main file declaration - CAN\CAN_Networking\stm8s_conf.h Library Configuration file - CAN\CAN_Networking\stm8s_it.c Interrupt routines source - CAN\CAN_Networking\stm8s_it.h Interrupt routines declaration @par Hardware environment - This example runs only on STM8S208 and STM8A52Ax devices. - This example has been tested with STMicroelectronics STM8/128-EVAL evaluation board and can be easily tailored to any other development board. - STM8/128-EVAL Set-up - Key push button - LD1..LD4 - Mono LCD - If another board is used, consider the folloing hardware connections : - PH3 -> LED1 -> resistor -> ground - PH2 -> LED2 -> resistor -> ground - PH1 -> LED3 -> resistor -> ground - PH0 -> LED4 -> resistor -> ground - PC0 -> Key Button -> ground + pull-up on 5V - PG1 (CAN Rx) and PG0 (CAN Tx) connected to a DB9 connector using a CAN Bus transceiver (eg. L9616). - Connect a female/female CAN cable between at least 2 EVAL CAN connectors (CN8 on STM8/128-EVAL board) - Connector 1 DB9_PIN2 to Connector 2 DB9_PIN2 (CAN_L) - Connector 1 DB9_PIN5 to Connector 2 DB9_PIN5 ( GND ) - Connector 1 DB9_PIN7 to Connector 2 DB9_PIN7 (CAN_H) @par How to use it ? In order to make the program work, you must do the following : - Copy all source files from this example folder to the template folder under Project\Template - Open your preferred toolchain - Add the required file: - stm8s_eval_lcd.c (under Utilities\STM8S_EVAL\Common) - Rebuild all files and load your image into target memory - Run the example - In the first time the LCD shows the message "STM8S CAN Press Key". - (1) By Pressing on Key Button : CAN send a Frame to command LED1 (LD1 ON) on the N eval-boards connected to the bus, all other Leds are OFF. The sender LCD shows "STM8S CAN Sender LD1 ON". The N-1 receivers LCD shows "STM8S CAN Receiver LD1 ON". - Press on Key Button again to send CAN Frame to command LD2 ON on the N eval-boards, all other Leds are OFF. The sender LCD shows "STM8S CAN Sender LD2 ON". The N-1 receivers LCD shows "STM8S CAN Receiver LD2 ON". - Press on Key Button again to send CAN Frame to command LD3 ON on the N eval-boards, all other Leds are OFF. The sender LCD shows "STM8S CAN Sender LD3 ON". The N-1 receivers LCD shows "STM8S CAN Receiver LD3 ON". - Press on Key Button again to send CAN Frame to command LD4 ON on the N eval-boards, all other Leds are OFF. The sender LCD shows "STM8S CAN Sender LD4 ON". The N-1 receivers LCD shows "STM8S CAN Receiver LD4 ON". - Press on Key Button again to go to step (1) @note Any unit in the CAN bus may play the role of sender (by pressing on the key) or receiver. @note - High-Density STM8A devices are the STM8AF52xx STM8AF6269/8x/Ax, STM8AF51xx, and STM8AF6169/7x/8x/9x/Ax microcontrollers where the Flash memory density ranges between 32 to 128 Kbytes - Medium-Density STM8A devices are the STM8AF622x/4x, STM8AF6266/68, STM8AF612x/4x, and STM8AF6166/68 microcontrollers where the Flash memory density ranges between 8 to 32 Kbytes - High-Density STM8S devices are the STM8S207xx, STM8S007 and STM8S208xx microcontrollers where the Flash memory density ranges between 32 to 128 Kbytes. - Medium-Density STM8S devices are the STM8S105x and STM8S005 microcontrollers where the Flash memory density ranges between 16 to 32-Kbytes. - Low-Density STM8S devices are the STM8S103xx, STM8S003 and STM8S903xx microcontrollers where the Flash density is 8 Kbytes. *

© COPYRIGHT 2011 STMicroelectronics

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