情况是这样的,这几天刚上手MSP430F247然后试着熟悉一下。
接着邪恶的事情就发生了,下载官方的时钟配置实例程序,第一次下载很成功接着就再也下载不了了:'(:'(
时钟是配置VOL的。我也不懂刚上手,迷迷糊糊就干掉了5个片子。
哪位大神出来指导指导啊!!(这样的开发代价太高了啊)
附送邪恶代码一份(有勇气的人可以尝试一下):- /* --COPYRIGHT--,BSD_EX
- * Copyright (c) 2012, Texas Instruments Incorporated
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * * Neither the name of Texas Instruments Incorporated nor the names of
- * its contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *******************************************************************************
- *
- * MSP430 CODE EXAMPLE DISCLAIMER
- *
- * MSP430 code examples are self-contained low-level programs that typically
- * demonstrate a single peripheral function or device feature in a highly
- * concise manner. For this the code may rely on the device's power-on default
- * register values and settings such as the clock configuration and care must
- * be taken when combining code from several examples to avoid potential side
- * effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
- * for an API functional library-approach to peripheral configuration.
- *
- * --/COPYRIGHT--*/
- //******************************************************************************
- // MSP430x24x Demo - Software Toggle P1.0, MCLK = VLO/8
- //
- // Description; Pulse P1.0 with a 1/100 active duty cycle using software.
- // Ultra-low frequency ~ 1.5kHz, ultra-low power active mode demonstrated. All
- // the 6 I/O ports are configured as low outputs to eliminate floating inputs.
- // ACLK = VL0, MCLK = VLO/8 ~ 1.5kHz, SMCLK = n/a
- //
- // MSP430F249
- // -----------------
- // /|| XIN|-
- // | | |
- // --|RST XOUT|-
- // | |
- // | P1.0|-->LED
- // | P5.4/MCLK|-->MCLK = VLO/8
- // | P5.6/ACLK|-->ACLK = VLO
- //
- // B. Nisarga
- // Texas Instruments Inc.
- // July 2007
- // Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.42A
- //******************************************************************************
- #include <msp430.h>
- volatile unsigned int i; // volatile to prevent optimization
- int main(void)
- {
- WDTCTL = WDTPW + WDTHOLD; // Stop WDT
- BCSCTL3 |= LFXT1S_2; // LFXT1 = VLOCLK
- IFG1 &= ~OFIFG; // Clear OSCFault flag
-
- __bis_SR_register(SCG1 + SCG0); // Stop DCO
- BCSCTL2 |= SELM_3 + DIVM_3; // MCLK = VLO/8
-
- P1DIR = 0xFF; // All P1.x outputs
- P1OUT = 0; // All P1.x reset
- P2SEL = 0; // All P2.x GPIO function
- P2DIR = 0xFF; // All P2.x outputs
- P2OUT = 0; // All P2.x reset
- P3DIR = 0xFF; // All P3.x outputs
- P3OUT = 0; // All P3.x reset
- P4DIR = 0xFF; // All P4.x outputs
- P4OUT = 0; // All P4.x reset
- P5DIR = 0xFF; // All P5.x outputs
- P5OUT = 0; // All P5.x reset
- P6DIR = 0xFF; // All P6.x outputs
- P6OUT = 0; // All P6.x reset
-
- P5SEL |= 0x50; // P5.4= MCLK option select
- // P5.6= ACLK option select
- for (;;)
- {
- P1OUT |= 0x01; // P1.0 set
- for (i = 10; i > 0; i--); // Delay 1x
- P1OUT &= ~0x01; // P1.0 reset
- for (i = 1000; i > 0; i--); // Delay 100x
- }
- }
复制代码第一次用msp430就遇上这种事也是很闹心的啊!:'(:'(:'(
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430是否有对应的flash擦除工具呢?可以擦除flash看看
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