GPIO中断问题

问题：本身触发中断信号
我用2的PSoC控制我的机器人
cy8c4125pvi-482控制面板和CapSense
cy8c5468axi-lp042控制电机驱动（剑齿虎2x32）及其他
我打算做的是
当CapSense活跃，cy8c4125pvi-482（P1.0）将触发信号cy8c5468axi-lp042（P2.7）
自从P2.7是GPIO中断，中断会引起停止电机
问题：
当电机不接，中断如预期触发工作，因此
CapSense主动>；P1.0触发- >；P2.7接收>；中断触发
但当电机连接，甚至CapSense不活跃，中断触发P2.7
甚至是非常罕见的，即使电机不连接和CapSense不活跃，有时P2.7触发中断本身
对策：
自cy8c5468axi-lp042（P2.6）信号继电器电路，我试图改变GPIO中断口P3.5的…结果=仍自触发中断
检查是否有在P2.7或P3.5 ..结果=无穗/噪声等任何秒杀
禁用CapSense的…结果还是选择触发
你的帮助和想法是感激
谢谢你
参考文献PDF
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                                                                                      以下为原文
                                            Problem: interrupt signal triggered by itself
I'm using 2 PSoC to control my robot
CY8C4125PVI-482 to control panel and capsense
CY8C5468AXI-LP042 to control Motor Driver(Sabertooth 2x32) and others
What I intend to do is
When capsense active, CY8C4125PVI-482 (P1.0) will trigger signal to CY8C5468AXI-LP042 (P2.7)
Since P2.7 is GPIO with interrupt, interrupt will triggered to stop the motor
Problem:
When motor is not connected, the interrupt triggering work as expected, thus
CapSense Active->P1.0 triggered->P2.7 received->interrupt triggered
BUT when motor connected, EVEN CapSense not active, interrupt triggered at P2.7
AND even it was very rare, even the motor not connected and CapSense not active, sometimes P2.7 triggered interrupt by itself
Countermeasure done:
-since CY8C5468AXI-LP042 (P2.6) signaling a relay circuit, I've tried to change GPIO interrupt port to P3.5....result=still interrupt self-triggered
-check if there is any spike at P2.7 or P3.5..result=no spike/noise etc
-disable Capsense....result=still sel-triggered

Your helps and ideas are appreciated
Thank you

   

        
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