STM32自带adc实现低频示波器及FFT频谱显示

/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** * File Name : readme.txt * Author : MCD Application Team * Version : V2.0.1 * Date : 06/13/2008 * Description : Description of the USART Printf 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. *******************************************************************************/ Example description =================== This example shows how to retarget the C library printf function to the USART. This implementation output the printf message on the Hyperterminal using USARTx. USARTx can be USART1, USART2, USART3, UART4 or UART5; to select the USART interface to be used uncomment the '#define USE_USARTx' line in 'platform_config.h' file. The USARTx is configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control disabled (RTS and CTS signals) - Receive and transmit enabled Directory contents ================== platform_config.h Evaluation board specific configuration file stm32f10x_conf.h Library Configuration file stm32f10x_it.h Interrupt handlers header file stm32f10x_it.c Interrupt handlers main.c Main program Hardware environment ==================== This example runs on STMicroelectronics STM3210B-EVAL and STM3210E-EVAL evaluation boards and can be easily tailored to any other hardware. To select the STMicroelectronics evaluation board used to run the example, uncomment the corresponding line in platform_config.h file. + The USARTx signals (Rx, Tx) must be connected to a DB9 connector using a RS232 transceiver. + Connect a null-modem female/female RS232 cable between the DB9 connector and PC serial port. + STM3210B-EVAL - Connect a null-modem female/female RS232 cable between the DB9 connector (CN6 for USART1, CN5 for USART2 in the STM3210B-EVAL board) and PC serial port. + STM3210E-EVAL - Connect a null-modem female/female RS232 cable between the DB9 connector (CN12 for USART1, CN8 for USART2 in the STM3210E-EVAL board) and PC serial port. - Hyperterminal configuration: - Word Length = 8 Bits - One Stop Bit - No parity - BaudRate = 115200 baud - flow control: None How to use it ============= In order to make the program work, you must do the following : - Create a project and setup all your toolchain's start-up files - Compile the directory content files and required Library files : + stm32f10x_lib.c + stm32f10x_usart.c + stm32f10x_gpio.c + stm32f10x_rcc.c + stm32f10x_nvic.c + stm32f10x_flash.c - Link all compiled files and load your image into target memory - Run the example ******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE******