[问答]

如何通过单个MCU从2个L6470驱动器读取状态引脚

问答对人有帮助，内容完整，我也想知道答案 0 你好，我是这个社区的新手，所以如果问题已经提升，请原谅我。在我的应用中，我计划使用两个步进驱动器L6470PD用于不同的步进电机，但是使用相同的MCU驱动。问题如下：我可以在这两个驱动程序之间共享状态行，例如：FLAG / BUSY / STCK / STBY / SW，并通过拉低CS线来定义此时想要使用的驱动程序？或者我应该处理专用于每个步进驱动器的FLAG / BUSY / STCK / STBY / SW线路。换句话说，计划仅在MCU上使用5GPIO作为两个驱动器或10GPIO引脚。非常感谢你提前亚采＃L6470 以上来自于谷歌翻译以下为原文 Hello, I am new in this community so please excuse me if the question was already rises. In my application I am planning to use two stepper drivers L6470PD for different stepper motors but driven from the same MCU. Question is the following: Can I share among those two drivers status lines like: FLAG/BUSY/STCK/STBY/SW and by pulling low the CS line define which driver I wanted to use at this moment? Or I should treat the FLAG/BUSY/STCK/STBY/SW lines dedicated for each individual stepper driver. So in other words plan to use only 5GPIO for two drivers or 10GPIO pins on MCU. Thank you very much in advance Jacek #l6470 0
2019-6-3 11:28:29　　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 hwp0415229 该类别下有 30 个回答。邀请回答可口可甜该类别下有 30 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 andyfly7 该类别下有 28 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。邀请回答哼小曲该类别下有 26 个回答。邀请回答举报张雪相关推荐 • L6470：驱动器适用于每相最大3A电流的步进电机吗？ 3356 • 为什么无法设置L6470寄存器？ 416 • L6470怎么将电流限制在100mA 2692 • 一条SPI总线上有多个L6470，不使用菊花链 2488 • L6470：连接Vreg和Vdd供电？ 3794 • L6470失速检测问题 2850 • 怎么使用SPI控制L6470 2433 • L6470连续读出状态寄存器电机不会移动 1379 • L6470采用UNIPOLAR MOTOR 2130 • L6470步损 1550 2个回答

答案对人有帮助，有参考价值 0 您好，L6470与菊花链架构兼容，允许MCU通过单个SPI接口驱动多个器件（参见 http://www.st.com/content/ccc/resource/technical/document/application_note/d7/dd/a8/f3/db/3e/49/6f/DM00082126.pdf/files/DM00082126.pdf/jcr：内容/翻译/ en.DM00082126.pdf 有关详细说明）。关于列出的引脚，必须加以区分： - STCK，SW和STBY是输入线。如果将这些引脚连接在一起，则两个器件同时以相同的信号驱动。 - FLAG和BUSY是开漏输出。您可以在“OR”硬件中连接它们。当MCU检测到“低”状态时，您可以使用SPI来识别拉低GPIO的器件。以上来自于谷歌翻译以下为原文 Hello, the L6470 is compatible with the daisy chain architecture allowing the MCU to drive multiple devices with a single SPI interface (refer to http://www.st.com/content/ccc/resource/technical/document/application_note/d7/dd/a8/f3/db/3e/49/6f/DM00082126.pdf/files/DM00082126.pdf/jcr:content/translations/en.DM00082126.pdf for more detailed description).Concerning to the listed pins, a distinction must be made: - the STCK, SW and STBY are input lines. If you connect together this pins both devices are driven with the same signal simultaneously. - the FLAG and BUSY are open-drain output. You can connect them in 'OR' hardware. When the MCU detect a 'LOW' status you can use the SPI to identify the device that pulled low the GPIO.

2019-6-3 11:34:33 评论举报周静

答案对人有帮助，有参考价值 0 你好，非常感谢您的快速帮助。我将从MCU获得两条专用的CS线路来确定我当前想要使用的驱动器。由于我有幸拥有更多备用GPIO线路，因此我将每个驱动器的所有线路分别交给MCU上的每个引脚。以上来自于谷歌翻译以下为原文 Hello, Thank you very much for quick help. I am going to have two dedicated CS lines from MCU to determine which driver currently I wanted to use. Since I had luck to have some more spare GPIO lines I tide all lines from each drivers separately to each pins on MCU.

2019-6-3 11:41:00 评论举报张雪