LIS3DH最佳操作规程

对不起，但我不清楚你想要什么功能，能否请你更多地说明。
我只有两个评论：
- 您可以使用FIFO阈值中断，当一定数量的样本存储在FIFO中时将触发中断（而不是轮询DRDY信号并自行计算样本数）
- 在数据读取之前，应检查STATUS_REG中的ZYXDA位，以避免多次读取相同的输出值



以下为原文




I'm sorry but it is not clear to me what is you desired functionality, can you please descibe it more.
I have just a two comments:
- you can use FIFO threshold interrupt which will trigger the interrupt when certain number of samples is stored in FIFO (instead of polling DRDY signal and counting the number of samples by yourself)
- you should check ZYXDA bit in STATUS_REG before data reading to avoid multiple reading of the same output value

谢谢您的回复。
简而言之，我正在为我的MCU加电并使用我想要的参数初始化加速度计，然后将其置于断电模式。然后，当提示MCU将加速度计置于活动状态（设置ODR值）并等待INT1上的ZYXDA拉高然后读取，然后在放入加速度计之前重复所需的样本总数进入省电模式。我没有使用FIFO功能，因为MCU在此期间无需处理，因此在INT1线上。
我写入器件的过程和每个寄存器的值如下：
 
TEMP_CFG_REG = 0xC0 //启用温度传感器和ADC
CTRL_REG2 = 0 //无过滤要求
CTRL_REG4 = 0 // Fs = 2g，8位分辨率
CTRL_REG6 = 0 //中断极性高电平有效
FIFO_CTRL_REG = 0x80 /​​/流模式，INT1上触发中断
CTRL_REG3 = 0x10 // ZYXDA_ENCTRL_REG5 = 0 // FIFO禁用
CTRL_REG1 = 0x4F // 50Hz，8位分辨率，XYZ轴'启用



以下为原文




Thank you for your reply.
In brief, I am powering up my MCU and initialising the accelerometer with my desired parameters and then putting it into power down mode. Then when prompted the MCU puts the accelerometer into an active state (sets the ODR value) and waits for the ZYXDA on INT1 to be pulled high and then takes a reading, this is then repeated for the total number of required samples before putting the accelerometer  into Power Down mode. I am not using the FIFO functionality as the MCU has nothing to process in the meantime and therefore pends on the INT1 line.
My process for writing to the device and each registers value is as follows:


TEMP_CFG_REG = 0xC0 // Temperature sensor and ADC enabled
CTRL_REG2 = 0 // No filtering requirements
CTRL_REG4 = 0 // Fs = 2g, 8 Bit Resolution
CTRL_REG6 = 0 // Interrupt Polarity Active High
FIFO_CTRL_REG = 0x80 // Stream mode, interrupt triggered on INT1
CTRL_REG3 = 0x10 // ZYXDA_ENCTRL_REG5 = 0 // FIFO Disabled
CTRL_REG1 = 0x4F // 50Hz, 8 Bit resolution, XYZ axis' enabled