利用x-cube-mems 驱动时，IIS2DLPC的驱动中我想要设置FIFO阈值中断，然后调用函数iis2dlpc_pin_int1_route_set进行设置。

val1_1.int1_fth=1;

iis2dlpc_pin_int2_route_set(&dev->Ctx,&val1_2);

HAL_Delay(20);

iis2dlpc_pin_int1_route_set(&dev->Ctx,&val1_1);

HAL_Delay(20);

aa= iis2dlpc_pin_int1_route_get(&dev->Ctx,&vvvval);

HAL_Delay(20);

再这个函数内部：

int32_t iis2dlpc_pin_int1_route_set(const stmdev_ctx_t *ctx,

                            iis2dlpc_ctrl4_int1_pad_ctrl_t *val)

{

iis2dlpc_ctrl5_int2_pad_ctrl_t ctrl5_int2_pad_ctrl;

iis2dlpc_ctrl7_t reg;

int32_t ret;

ret = iis2dlpc_read_reg(ctx, IIS2DLPC_CTRL5_INT2_PAD_CTRL,

                  (uint8_t *) &ctrl5_int2_pad_ctrl, 1);

if (ret == 0)

{

ret = iis2dlpc_read_reg(ctx, IIS2DLPC_CTRL7, (uint8_t *) &reg, 1); }

if (ret == 0)

{

if ((ctrl5_int2_pad_ctrl.int2_sleep_state

 | ctrl5_int2_pad_ctrl.int2_sleep_chg

 | val->int1_tap

 | val->int1_ff

 | val->int1_wu

 | val->int1_single_tap

 | val->int1_6d) != PROPERTY_DISABLE)

{

reg.interrupts_enable = PROPERTY_ENABLE;

}

else

{

reg.interrupts_enable = PROPERTY_DISABLE;

}

ret = iis2dlpc_write_reg(ctx, IIS2DLPC_CTRL4_INT1_PAD_CTRL,

                     (uint8_t *) val, 1);

}

if (ret == 0)

{

ret = iis2dlpc_write_reg(ctx, IIS2DLPC_CTRL7, (uint8_t *) &reg, 1); }

else

{

ret = ret; }

return ret;

}

由于前置条件的原因，一致触发reg.interrupts_enable = PROPERTY_DISABLE;。所以导致中断不使能。难道设置fifo阈值中断，还需要同步设置前面的几个中断吗？

然后另外一个问题，再iis3dwb的驱动中：

int32_t iis3dwb_xl_data_rate_set(const stmdev_ctx_t *ctx,

                         iis3dwb_odr_xl_t val)

{

iis3dwb_ctrl1_xl_t ctrl1_xl;

int32_t ret = iis3dwb_read_reg(ctx, IIS3DWB_CTRL1_XL, (uint8_t *)&ctrl1_xl, 1);

if (ret == 0)

{

ctrl1_xl.xl_en = (uint8_t)val;

ret = iis3dwb_write_reg(ctx, IIS3DWB_CTRL1_XL,

                    (uint8_t *)&ctrl1_xl, 1);

}

return ret;

}**

这个函数按道理是设置输出速度的，为什么最后变成了写入xl_en了。