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你好,
我正在使用IIS2DH来处理我的应用程序。但是,当我测量它消耗的电流时,问题就会出现。在25Hz,INT2持续时间为40ms,所有轴都启用了低功率,我观察的电流为500uA,这与IIS2DH数据表中没有提到的相符。配置如下所示: CTRL_REG1:0x3F CTRL_REG4:0x20 CTRL_REG6:0x20 INT2_CFG:0x04 INT2_THS:0x05 INT2_DUR:0x01 以上配置适用于我的应用程序。但是,它消耗了大量的电流。我错过了什么吗?请帮忙。 另外,有人可以向我解释一下CTRL_REG6上的BOOT_I2位如何工作?它的功能是什么?我在哪里可以找到有关它的信息? #iis2dh 以上来自于谷歌翻译 以下为原文 Hello, I am using IIS2DH to work for my application. But the problem rises when I measure the current it is consuming. At 25Hz with 40ms INT2 duration and Low Power Enabled with all axis, I am observing a current a current of 500uA which is not according to what mentioned in the data sheet of IIS2DH. The configuration is shown below: CTRL_REG1: 0x3F CTRL_REG4: 0x20 CTRL_REG6: 0x20 INT2_CFG: 0x04 INT2_THS: 0x05 INT2_DUR: 0x01 The above configuration works perfectly for my application. However, it is consuming a lot of current. Am I missing something? Please help. Also, could anyone explain to me as to how BOOT_I2 bit on CTRL_REG6 work ? what is its function? Where can i find information about it? #iis2dh |
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7个回答
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关于电流消耗,请您分享原理图?
CTRL_REG6中的BOOT_I2位允许在INT2引脚上看到引导状态,基本上如果使能该位,INT2引脚在传感器启动期间将变为高电平并在此之后变为低电平。 以上来自于谷歌翻译 以下为原文 Concerning the current consumption, can you please share the schematic? The BOOT_I2 bit in CTRL_REG6 allow to see boot status on the INT2 pin, basically if you enable this bit the INT2 pin will be high during sensor boot-up and goes low after that. |
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你好先生,
原理图中没有太多内容。我只有STEVAL-MKI168V1。连接到TI-Launchpad CC2640。我使用电池启动了启动板。电池+ ve端子连接到电流表(uA)的一个端子,另一个端子连接到启动板。 Launchpad具有3.3V端口,STEVAL-MKI168V1连接到该端口。 TI - Launchpad配置加速度计并进入关闭模式。 问候 以上来自于谷歌翻译 以下为原文 Hello Sir, There is not much in the schematic. I just have the STEVAL-MKI168V1. connected to TI-Launchpad CC2640 . I have the launchpad powered on using a battery. The battery +ve terminal is connected to one terminal of the Ammeter(uA) and from the other terminal it is connected to the Launchpad. The Launchpad has 3.3V port from which the STEVAL-MKI168V1 is connected. The TI - Launchpad configures the accelerometer and enters shutdown mode. Regards |
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您能否仅测量传感器的电流消耗,将电流表连接到Launchpad上的3.3V端口和传感器的VDD + VDD_IO之间。
根据您的描述,您似乎只是假设电流流入传感器并且启动板的电流消耗可以忽略不计。 以上来自于谷歌翻译 以下为原文 Can you please measure the current consumption only of the sensor, connect the ammeter between 3.3V port on Launchpad and the VDD + VDD_IO of the sensor. According to your description it seems you are only assuming the current is flowing into the sensor and the current consumption of the Launchpad is negligible. |
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你好先生,
感谢你能这么快回复。我按你提到的做了改动。我现在的时间大约是100uA。我在这里做错了吗? 问候 以上来自于谷歌翻译 以下为原文 Hello Sir, Thank you for the quick reply. I did the changes as you mentioned. I am getting now around 100uA as the current. Is there something else that I am doing wrong here ? Regards |
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你好先生,
它现在消耗高达4uA。感谢你们对我的帮助。 以上来自于谷歌翻译 以下为原文 Hello Sir, It is consuming upto 4uA now. Thank you for helping me. |
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Hi Miroslav,在我的电路板上,SA0引脚悬空,这意味着没有连接到VCC或GND。那么,它是否会影响电流消耗还是很好?你能否对这个问题发表评论。
以上来自于谷歌翻译 以下为原文 Hi Miroslav, on my board, the SA0 pin is floating which means there is no connection either to VCC or GND. So, is it affect current consumption or is it fine? Can you please provide comment on this query. |
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如果SA0引脚悬空,则内部上拉不会产生任何额外电流,但建议不要这样做。引脚应极化(连接到VDD_IO或GND)。
以上来自于谷歌翻译 以下为原文 If the SA0 pin is let floating there won't be any additional current through internal pull-up, but this is not recommended configuration. The pin should be polarized (connected either to VDD_IO or to GND). |
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