[参考译文] MSP430F5529：使用 USB 示例时、内部信息闪存写入失败

Other Parts Discussed in Thread: MSP430F5529

https://e2e.ti.com/support/microcontrollers/msp-low-power-microcontrollers-group/msp430/f/msp-low-power-microcontroller-forum/1037522/msp430f5529-internal-info-flash-write-failed-when-using-usb-example

您好！

我正在尝试从 MSP430F5529上的 Info D 内部闪存区域读取/写入数据。

当使用 MSP430F55xx_flashwrite_02.c 示例时、它运行良好、但当我使用 USB 示例(C1_LedOnOff)时、它似乎不起作用。

我正在使用 C1_LedOnOff 示例、初始代码为以下附加代码(用于调试)：

void main (void)
{
    WDT_A_hold(WDT_A_BASE); // Stop watchdog timer

    unsigned long * Flash_ptrD;               // Initialize Flash pointer Seg D
    unsigned long FlashTmp;

    Flash_ptrD = (unsigned long *) 0x1800;    // Initialize Flash pointer
    FlashTmp = *Flash_ptrD;                       // Initialize Value
    FlashTmp++;
    FCTL3 = FWKEY;                            // Clear Lock bit
    FCTL1 = FWKEY+ERASE;                      // Set Erase bit
    *Flash_ptrD = 0;                          // Dummy write to erase Flash seg
    FCTL1 = FWKEY+BLKWRT;                     // Enable long-word write
    *Flash_ptrD = FlashTmp;                      // Write to Flash
    FCTL1 = FWKEY;                            // Clear WRT bit
    FCTL3 = FWKEY+LOCK;                       // Set LOCK bit
    while(1);                                 // Loop forever, SET BREAKPOINT HERE

    // Minumum Vcore setting required for the USB API is PMM_CORE_LEVEL_2 .
    PMM_setVCore(PMM_CORE_LEVEL_2);
    USBHAL_initPorts();           // Config GPIOS for low-power (output low)
    USBHAL_initClocks(8000000);   // Config clocks. MCLK=SMCLK=FLL=8MHz; ACLK=REFO=32kHz
    initTimer();           // Prepare timer for LED toggling
    USB_setup(TRUE, TRUE); // Init USB & events; if a host is present, connect

    __enable_interrupt();  // Enable interrupts globally
    
    while (1)
    {
        ...

使用 USB 示例时、是否有锁定闪存信息区域的内容？

谢谢、

Itay