基于LM3S811主控制器，通过AD9851产生的正弦波信号，制作高精度测量仪（论文+LRC测量仪源码）

Boot Loader Demo 2 An example to demonstrate the use of the boot loader. After being started by the boot loader, the application will configure the UART, wait for select button to be pressed, and then branch back to the boot loader to await the start of an update. The UART will always be configured at 115,200 baud and does not require the use of auto-bauding. Both the boot loader and the application must be placed into flash. Once the boot loader is in flash, it can be used to program the application into flash as well. Then, the boot loader can be used to replace the application with another. The boot_demo1 application can be used along with this application to easily demonstrate that the boot loader is actually updating the on-chip flash. Step 1: download the 'boot_serial' to flash use JTAG. Step 2: download the 'boot_demo2' to flash use UART (115200-8-n-1). Notice: Be sure the program address offset is 0x800. Your will see 2 red LEDs are light up. please press 'USER' button, 2 blue LEDs are light up,then,the boot load is active,you can download other boot demo to flash with UART. ------------------------------------------------------------------------------- Copyright (c) 2007-2010 Texas Instruments Incorporated. All rights reserved. Software License Agreement Texas Instruments (TI) is supplying this software for use solely and exclusively on TI's microcontroller products. The software is owned by TI and/or its suppliers, and is protected under applicable copyright laws. You may not combine this software with "viral" open-source software in order to form a larger program. THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS. NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. This is part of revision 6288 of the Stellaris Firmware Development Package.