讲一下内容改写为树莓派的内联汇编代码：void digital_write(volatile uint32_t *gpio, int pin, int value) { // FIXME - replace this function with inline assembler // Select SET or CLR registers int reg = value ? GPIO_GPSET0 : GPIO_GPCLR0; // Pins 0-31 are

以下是内容改写为树莓派的内联汇编代码：

void digital_write(volatile uint32_t *gpio, int pin, int value) {
    // FIXME - replace this function with inline assembler

    // Select SET or CLR registers
    int reg = value ? GPIO_GPSET0 : GPIO_GPCLR0;

    // Pins 0-31 are in the first 32-bit register, pins 32-53 are in the second
    int offset = pin < 32 ? pin : pin - 32;

    // Calculate the address of the register
    volatile uint32_t *addr = gpio + (reg / 4);

    // Calculate the bit mask for the pin
    uint32_t mask = 1 << offset;

    // Use inline assembly to write to the register
    asm volatile(
        "str %[mask], [%[addr]]"
        : // no outputs
        : [mask] "r" (mask), [addr] "r" (addr)
        : // no clobbers
    );
}

注：上述代码中的 `GPIO_GPSET0` 和 `GPIO_GPCLR0` 是树莓派的寄存器地址，`volatile uint32_t *gpio` 是树莓派的 GPIO 寄存器基地址。