STM32F0xx Standard Peripherals Firmware Library: USART Hyperterminal interrupt Example

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  * @file    USART/USART_HyperTerminalInterrupt/readme.txt 
  * @author  MCD Application Team
  * @version V1.4.0
  * @date    24-July-2014
  * @brief   Description of the USART Hyperterminal interrupt Example.
  ******************************************************************************
  *
  * 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:
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  *        http://www.st.com/software_license_agreement_liberty_v2
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  * 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
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  ******************************************************************************
   

Example Description

This example provides a description of how to use the USART1 for STM32F051R8T6 devices and USART2 STM32F072VBT6 devices with Transmit and Receive interrupts to communicate with the hyperterminal.

First, the USART sends the TxBuffer to the hyperterminal and still waiting for a string from the hyperterminal that you must enter.The string that you have entered is stored in the RxBuffer array. The receive buffer have a RxBufferSize bytes as maximum (the reception is stopped when this maximum receive value is reached).

The USART is configured as follow:

• BaudRate = 9600 baud
• Word Length = 8 Bits (7 data bit + 1 parity bit)
• Two Stop Bit
• Odd parity
• Hardware flow control disabled (RTS and CTS signals)
• Receive and transmit enabled

Note:

When the parity is enabled, the computed parity is inserted at the MSB position of the transmitted data.

Directory contents

• USART/HyperTerminal_Interrupt/stm32f0xx_conf.h Library Configuration file
• USART/HyperTerminal_Interrupt/stm32f0xx_it.c Interrupt handlers
• USART/HyperTerminal_Interrupt/stm32f0xx_it.h Interrupt handlers header file
• USART/HyperTerminal_Interrupt/main.c Main program
• USART/HyperTerminal_Interrupt/main.h Main program header file
• USART/HyperTerminal_Interrupt/system_stm32f0xx.c STM32F0xx system source file

Note:

The "system_stm32f0xx.c" is generated by an automatic clock configuration tool and can be easily customized to meet user application requirements. To select different clock setup, use the "STM32F0xx_Clock_Configuration_VX.Y.Z.xls" provided with the AN4055 package available on ST Microcontrollers

Hardware and Software environment

• This example runs on STM32F0xx devices.

• This example has been tested with STMicroelectronics STM320518-EVAL and STM32072B-EVAL including respectively STM32F051R8T6 and STM32F072VBT6 devices and can be easily tailored to any other supported device and development board

• STM320518-EVAL Set-up
  • Connect a null-modem female/female RS232 cable between the DB9 connector CN7 and PC serial port.
  • Make sure that JP3 is in position 5<->6

• STM32072B-EVAL Set-up
  • Connect a null-modem female/female RS232 cable between the DB9 connector CN10 and PC serial port.
  • Make sure that JP17 is in position 5<->6

• Hyperterminal configuration:
  • Word Length = 7 Bits
  • Two Stop Bit
  • Odd parity
  • BaudRate = 9600 baud
  • flow control: None

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
• Open your preferred toolchain
• If the used device is STM32F051R8T6 choose STM32F051 project
  • Add the following files to the project source list
    • Utilities\STM32_EVAL\STM320518_EVAL\stm320518_eval.c
• If the used device is STM32F072VBT6 choose STM32F072 project
  • Add the following files to the project source list
    • Utilities\STM32_EVAL\STM32072B_EVAL\stm32072b_eval.c
• Rebuild all files and load your image into target memory
• Run the example

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