请教周工 RAM中断向量

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junze|

楼主 | 2008-7-1 11:55 | 只看该作者回帖奖励

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中断向量, RAM, VECTOR, ui, boot

我在 LPC2136 中写了两部分代码,一部分是应用代码,还有一部分想做升级用.
现在问题是,当跳转到BOOT部分代码运行后,我把MEMMAP设置为2,并且也在0x40000000 开始处设置了中断向量,但,当打开中断后,就死机了.

请问,是什么问题?

    uint32_t *pvector = 0;
    pvector = (uint32_t *)(0x40000000 + 0x00);
    *pvector = BOOT_CODE_START;    // reset
    pvector = (uint32_t *)(0x40000000 + 0x04);
    *pvector = BOOT_CODE_START;                // udf
    pvector = (uint32_t *)(0x40000000 + 0x08);
    *pvector = BOOT_CODE_START;        // swi
    pvector = (uint32_t *)(0x40000000 + 0x0c);
    *pvector = BOOT_CODE_START;        // pre fetch
    pvector = (uint32_t *)(0x40000000 + 0x10);
    *pvector = BOOT_CODE_START;        // data abort
    pvector = (uint32_t *)(0x40000000 + 0x14);
    *pvector = BOOT_CODE_START;        // reserved
    pvector = (uint32_t *)(0x40000000 + 0x18);
    *pvector = BOOT_CODE_START;        // reserved
    *pvector = (uint32_t)OS_CPU_IRQ_ISR;                // irq
    pvector = (uint32_t *)(0x40000000 + 0x1c);
    *pvector = BOOT_CODE_START;        // reserved
    *pvector = (uint32_t)OS_CPU_FIQ_ISR;                // fiq

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