[问答]

LSM9DS0 I2C的问题

2485 I2C

问答对人有帮助，内容完整，我也想知道答案 0 我正在使用LSM9DS0有线与I2C通信。芯片似乎能够识别它的被寻址，ACK字节，响应读取等，但问题是它总是发回相同的字节。例如：我尝试按以下顺序配置设备： 0xD4 0x20 0x7F 0x04 0x08 0x00 0x40 其中D4是陀螺仪地址，20是起始寄存器。然后，我执行5个字节的读取，以确保设备配置为我希望它，但只接收5个0x40实例。该模式似乎是写入寄存器的最后一个字节只是由芯片反复重复。唯一的例外是读取按预期响应的WHO_AM_I寄存器。有没有其他人有这个问题或有任何想法可能会出错？＃I2C-lsm9ds0 以上来自于谷歌翻译以下为原文 I'm using a LSM9DS0 wired to communicate with I2C. The chip seems to recognize when its being addressed, ACKs bytes, responds to reads, etc. but the problem is it always sends the same byte back. For example: I attempt to configure the device through the following sequence: 0xD4 0x20 0x7F 0x04 0x08 0x00 0x40 where D4 is the gyro address and 20 is the starting register. I then perform a read of 5 bytes to ensure that the device is configured as I want it to be but receive only five instances of 0x40. The pattern seems to be that the last byte written to a register is simply repeated over and over by the chip. The only exception is when reading the WHO_AM_I registers which respond as expected. Has anyone else had this problem or have any ideas as to what might be going wrong? #i2c-lsm9ds0 0
2018-9-25 17:13:48　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 47 个回答。邀请回答 chm5 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 42 个回答。邀请回答 hgimtk 该类别下有 36 个回答。邀请回答 HengDu 该类别下有 31 个回答。邀请回答可口可甜该类别下有 30 个回答。邀请回答 hwp0415229 该类别下有 30 个回答。邀请回答 andyfly7 该类别下有 28 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答 jiangwenwen 该类别下有 28 个回答。邀请回答 kingnet6688 该类别下有 28 个回答。邀请回答麻酱该类别下有 28 个回答。邀请回答柱子图宁该类别下有 27 个回答。邀请回答 bluepink 该类别下有 27 个回答。邀请回答法规处发该类别下有 27 个回答。邀请回答 ldliu 该类别下有 27 个回答。邀请回答成长的小师弟该类别下有 27 个回答。邀请回答云汉007 该类别下有 27 个回答。邀请回答颜刚YanG 该类别下有 27 个回答。邀请回答 sfafa 该类别下有 26 个回答。邀请回答举报杨芳相关推荐 • 我想评估LSM9DS0和LSM303C 1747 • LSM9DS0上的软系统怎么复位？ 1966 • 如何让LSM9DS0 i2c工作？ 1933 • LSM9DS0传感器未给出确认 1450 • LSM9DS0陀螺仪阅读问题 1991 • 请问怎么才能将4线SPI与接口LSM9DS0连接？ 1200 • LSM9DS0能使用4线SPI通信吗 1168 • LSM9DS0和LSM9DS1之间的磁强计差异 4027 • LSM9DS0 4线SPI通信MCU无法得到任何响应 2287 • LSM9DS0磁力计出现故障 2852 1个回答

答案对人有帮助，有参考价值 0 事实证明，默认情况下不启用自动寄存器地址增量，我需要将寄存器地址与0x80进行按位OR运算，以使多字节事务处理起作用。这就是为什么使用WHO_AM_I寄存器的单字节事务工作正常，而多字节事务失败。以上来自于谷歌翻译以下为原文 Turns out that automatic register address increment is not enabled by default and I needed to bitwise OR my register address with 0x80 in order to get multi-byte transactions to work. This is why single byte transactions with the WHO_AM_I register worked fine while multi-byte transactions failed.

2018-9-25 17:26:03 评论举报杨芳