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MSP430下载一次之后不能再下载！！！！

2019-07-24 16:19发布

站内问答 / TI MCU
12138 19 1372
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）：
  1. /* --COPYRIGHT--,BSD_EX
  2. * Copyright (c) 2012, Texas Instruments Incorporated
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  8. *
  9. * *  Redistributions of source code must retain the above copyright
  10. *    notice, this list of conditions and the following disclaimer.
  11. *
  12. * *  Redistributions in binary form must reproduce the above copyright
  13. *    notice, this list of conditions and the following disclaimer in the
  14. *    documentation and/or other materials provided with the distribution.
  15. *
  16. * *  Neither the name of Texas Instruments Incorporated nor the names of
  17. *    its contributors may be used to endorse or promote products derived
  18. *    from this software without specific prior written permission.
  19. *
  20. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22. * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  24. * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25. * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26. * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  27. * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  28. * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29. * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30. * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31. *
  32. *******************************************************************************
  33. *
  34. *                       MSP430 CODE EXAMPLE DISCLAIMER
  35. *
  36. * MSP430 code examples are self-contained low-level programs that typically
  37. * demonstrate a single peripheral function or device feature in a highly
  38. * concise manner. For this the code may rely on the device's power-on default
  39. * register values and settings such as the clock configuration and care must
  40. * be taken when combining code from several examples to avoid potential side
  41. * effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
  42. * for an API functional library-approach to peripheral configuration.
  43. *
  44. * --/COPYRIGHT--*/
  45. //******************************************************************************
  46. //  MSP430x24x Demo - Software Toggle P1.0, MCLK = VLO/8
  47. //
  48. //  Description; Pulse P1.0 with a 1/100 active duty cycle using software.
  49. //  Ultra-low frequency ~ 1.5kHz, ultra-low power active mode demonstrated. All
  50. //  the 6 I/O ports are configured as low outputs to eliminate floating inputs.
  51. //  ACLK = VL0, MCLK = VLO/8 ~ 1.5kHz, SMCLK = n/a
  52. //
  53. //                MSP430F249
  54. //             -----------------
  55. //         /||              XIN|-
  56. //          | |                 |
  57. //          --|RST          XOUT|-
  58. //            |                 |
  59. //            |             P1.0|-->LED
  60. //            |        P5.4/MCLK|-->MCLK = VLO/8
  61. //            |        P5.6/ACLK|-->ACLK = VLO
  62. //
  63. //  B. Nisarga
  64. //  Texas Instruments Inc.
  65. //  July 2007
  66. //  Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.42A
  67. //******************************************************************************
  68. #include <msp430.h>

  70. volatile unsigned int i;                    // volatile to prevent optimization

  72. int main(void)
  73. {
  74.   WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  75.   BCSCTL3 |= LFXT1S_2;                      // LFXT1 = VLOCLK
  76.   IFG1 &= ~OFIFG;                           // Clear OSCFault flag
  77.   
  78.   __bis_SR_register(SCG1 + SCG0);           // Stop DCO
  79.   BCSCTL2 |= SELM_3 + DIVM_3;               // MCLK = VLO/8
  80.   
  81.   P1DIR = 0xFF;                             // All P1.x outputs
  82.   P1OUT = 0;                                // All P1.x reset
  83.   P2SEL = 0;                                // All P2.x GPIO function
  84.   P2DIR = 0xFF;                             // All P2.x outputs
  85.   P2OUT = 0;                                // All P2.x reset
  86.   P3DIR = 0xFF;                             // All P3.x outputs
  87.   P3OUT = 0;                                // All P3.x reset
  88.   P4DIR = 0xFF;                             // All P4.x outputs
  89.   P4OUT = 0;                                // All P4.x reset
  90.   P5DIR = 0xFF;                             // All P5.x outputs
  91.   P5OUT = 0;                                // All P5.x reset
  92.   P6DIR = 0xFF;                             // All P6.x outputs
  93.   P6OUT = 0;                                // All P6.x reset
  94.   
  95.   P5SEL |= 0x50;                            // P5.4= MCLK option select
  96.                                             // P5.6= ACLK option select
  97.   for (;;)
  98.   {
  99.     P1OUT |= 0x01;                          // P1.0 set
  100.     for (i = 10; i > 0; i--);               // Delay 1x
  101.     P1OUT &= ~0x01;                         // P1.0 reset
  102.     for (i = 1000; i > 0; i--);             // Delay 100x
  103.   }
  104. }
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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19条回答
xqy281
2019-07-25 14:47
终于知道为什么了！！我用的是MSP430f247，但是我用的实例却是MSP430F2471。
虽然设备列表已经改过来了，但是可以flash地址上有些差别，所以就导致了被锁的现象。唉唉唉唉~~~

都怪自己文件名没看完就试。（附图）
J644C4C4N[N%EWYW8QAOKJ6.png

那么接着问题就来了，哪位大神知道这种操作要怎么恢复啊！！（虽说是样品，但也觉得挺浪费的）

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