各位开发者：
大家好。我使用C28346的eCAP1进行外部信号的上升沿捕捉，在GPIO24管脚上有一个20MHz的时钟信号，我在eCAP1的中断函数中进行计数。参考了TI提供的eCAP的例程，发现eCAP工作在One-shot模式下，我现在把其改成了连续模式，发现中断只执行一次就停止了，寄存器的配置如下：
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; //
ECap1Regs.ECCTL2.bit.STOP_WRAP = 3; // Stop at 4 events
ECap1Regs.ECCTL1.bit.CAP1POL = 0; // Rising edge
ECap1Regs.ECCTL1.bit.CAP2POL = 0; // Rising edge
ECap1Regs.ECCTL1.bit.CAP3POL = 0; // Rising edge
ECap1Regs.ECCTL1.bit.CAP4POL = 0; // Rising edge
ECap1Regs.ECCTL1.bit.CTRRST1 = 0; // Difference operation
ECap1Regs.ECCTL1.bit.CTRRST2 = 0; // Difference operation
ECap1Regs.ECCTL1.bit.CTRRST3 = 0; // Difference operation
ECap1Regs.ECCTL1.bit.CTRRST4 = 0; // Difference operation
ECap1Regs.ECCTL2.bit.SYNCI_EN = 0; // Enable sync in
ECap1Regs.ECCTL2.bit.SYNCO_SEL = 0; // Pass through
// ECap1Regs.ECCTL1.bit.CAPLDEN = 1; // Enable capture units
ECap1Regs.ECCTL2.bit.TSCTRSTOP = 1; // Start Counter
ECap1Regs.ECCTL1.bit.CAPLDEN = 1; // Enable CAP1-CAP4 register loads
ECap1Regs.ECEINT.bit.CEVT4 = 1; // 4 events = interrupt
请教下原因是什么？该如何才能让eCAP工作在连续模式下进行中断？
