[问答]

VL53L0X配置GPIO1 INTERRUPT时的2mA电流消耗异常

1643 GPIO

问答对人有帮助，内容完整，我也想知道答案 0 你好。我们集成了VL53L0X TOF传感器，在测量电流消耗时我们非常惊讶。在数据表中，当GPIO1配置为中断时，没有提及电流消耗。我们在连续定时测距中使用传感器，并且当阈值通过时我们希望在CPU中断。我们已经在CONtiNUOUS TIMED和INTERRUPT_OFF中对器件进行了测试，电流消耗正常：测量时（测量间间隔）仅为几uA，测量时为15-20mA（约33ms）。但是当我们将INTERRUPT配置为与OFF不同的任何值时，测量间电流消耗最多可提高2mA。 ST应用笔记或数据集中没有说明这一点。引脚和引脚配置按照数据表中的建议进行配置。 ST的某个人可以确认这个中断的2mA消耗是否正常？谢谢！＃vl53l0x-x-nucleo-53l0a1＃vl53l0x＃proximity-sensor 以上来自于谷歌翻译以下为原文 Hi. We have integrated a VL53L0X TOF sensor, and we are getting very surprised when measuring current consumption. In the datasheet there is no mention to current consumption when GPIO1 is configured to interrupt. We are using the sensor in Continuous Timed Ranging, and we want to be interrupted in the CPU when a threshold is passed. We have tested the device in CONTINUOUS TIMED and with INTERRUPT_OFF, and the current consumption is OK: just few uA when not measuring (inter-measurement period), and 15-20mA during measurement (about 33ms). But when we configure INTERRUPT to any value different from OFF, then the inter-measurement current consumption raises up to 2mA approx. Nothing is stated in ST application notes or datahseets about this. Pins and pull-ups are configured as suggested in the datasheet. Can someone from ST confirm whether this 2mA consumption is OK or not for the interrupt? Thanks! #vl53l0x-x-nucleo-53l0a1 #vl53l0x #proximity-sensor 0
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答案对人有帮助，有参考价值 0 我想你已经发现了一个不幸的“特征”。如果将阈值设置为小于255mm，则会得到正确的行为。如果阈值大于255，则需要软件补丁，不幸的是补丁意味着我们无法将芯片置于低功耗模式。您可以继续开发，因为知道新芯片中的情况已得到修复 - 适用于3月中旬（引脚兼容）。或者您可以使用没有阈值的定时测量，在每次测量结束时唤醒以读取结果。 - 约翰以上来自于谷歌翻译以下为原文 I think you have uncovered an unfortunate 'feature'. If you set a threshold for less that 255mm, you will get the correct behavior. If the threshold is greater than 255 a software patch is required, and unfortunately the patch means that we cannot put the chip into low power mode. You can continue development knowing that the situation is fixed in the new chip - due out Mid March (pin compatible). Or you can used a timed measurement without thresholds an wake up at the end of every measurement to read the result. - john

2019-5-10 16:32:27 评论举报王竹