完善资料让更多小伙伴认识你,还能领取20积分哦, 立即完善>
我在使用F28030做BLDC速度控制,使用eCAP管脚获取一个霍尔管脚(三相)的信号。用示波器观测速度为600转Rpm左右(正负15转),可是使用eCAP测试结果差别很大,一会800,一会600,跳变严重。文件配置如下:
void InitECapture() [ ECap1Regs.ECEINT.all = 0x0000; // Disable all capture interrupts ECap1Regs.ECCLR.all = 0xFFFF; // Clear all CAP interrupt flags ECap1Regs.ECCTL1.bit.CAPLDEN = 0; // Disable CAP1-CAP4 register loads ECap1Regs.ECCTL2.bit.TSCTRSTOP = 0; // Make sure the counter is stopped // Configure peripheral registers ECap1Regs.ECCTL2.bit.CONT_ONESHT =0; // One-shot ECap1Regs.ECCTL2.bit.STOP_WRAP = 3; // Stop at 4 events ECap1Regs.ECCTL1.bit.CAP1POL = 1; // Falling edge ECap1Regs.ECCTL1.bit.CAP2POL = 0; // edge ECap1Regs.ECCTL1.bit.CAP3POL = 1; // Falling edge ECap1Regs.ECCTL1.bit.CAP4POL = 0; // edge ECap1Regs.ECCTL1.bit.CTRRST1 = 1; // Difference operation ECap1Regs.ECCTL1.bit.CTRRST2 = 1; // Difference operation ECap1Regs.ECCTL1.bit.CTRRST3 = 1; // Difference operation ECap1Regs.ECCTL1.bit.CTRRST4 = 1; // Difference operation ECap1Regs.ECCTL2.bit.SYNCI_EN = 0; // Enable sync in ECap1Regs.ECCTL2.bit.SYNCO_SEL = 0; // Pass through ECap1Regs.ECCTL2.bit.TSCTRSTOP = 1; // Start Counter ECap1Regs.ECCTL2.bit.REARM = 1; // arm one-shot ECap1Regs.ECCTL1.bit.CAPLDEN = 1; // Enable CAP1-CAP4 register loads ECap1Regs.ECEINT.bit.CEVT4 = 1; // 4 events = interrupt ] interrupt void ECap1_isr(void) [ speed(); ECap1Regs.ECCLR.bit.CEVT4 = 1; ECap1Regs.ECCLR.bit.INT = 1; ECap1Regs.ECCTL2.bit.REARM = 1;//持续捕捉外部信号 // Acknowledge this interrupt to receive more interrupts from group 4 PieCtrlRegs.PIEACK.all = PIEACK_GROUP4; ] void speed(void) [ T1=ECap1Regs.CAP1; T2=ECap1Regs.CAP2; T3=ECap1Regs.CAP3; T4=ECap1Regs.CAP4; T=T1+T2+T3+T4; n=3600000000.00/T; if(n>=550&&n<=700) [ LightLED1(); ] else [ ShutLED1(); ] ] |
|
相关推荐
3 个讨论
|
|
只有小组成员才能发言,加入小组>>
TMS320F28377D:新做了以377d为芯片的板子,上电后芯片复位引脚出现方波请问如何解决?
1910 浏览 0 评论
TPS55340通电后输入端保险丝烧断,芯片输入和GND之间短路
3667 浏览 4 评论
5042 浏览 0 评论
请问如何用DM368对RGB格式的图片数据进行编码生成JPEG格式图片?
1740 浏览 1 评论
9426 浏览 8 评论
CC3100BOOST使用CC3200lunchXL进行烧录
686浏览 2评论
735浏览 1评论
TMS320F28034: 利用C2prog通过SCI给TMS320F28034烧录程序,出现错误提示:Bootloading... failed (invalid echo)!
703浏览 1评论
求DLPC350 Programmer’s Guide User's Guide 中文版说明书
1210浏览 1评论
1794浏览 1评论
小黑屋| 手机版| Archiver| 电子发烧友 ( 湘ICP备2023018690号 )
GMT+8, 2024-5-13 02:55 , Processed in 0.745927 second(s), Total 51, Slave 44 queries .
Powered by 电子发烧友网
© 2015 bbs.elecfans.com
关注我们的微信
下载发烧友APP
电子发烧友观察
版权所有 © 湖南华秋数字科技有限公司
电子发烧友 (电路图) 湘公网安备 43011202000918 号 电信与信息服务业务经营许可证:合字B2-20210191 工商网监 湘ICP备2023018690号