AD SPI接口通过上述硬件电路直接接DSP的McBSP接口,通过示波器能看到4M CLK和15K的AD采样,FSR信号也有,但没有MCBSP的中断
Shine:
c6746 McBSP是不支持SPI clock stop mode的,所以AD要接SPI口。
The SPI CLKSTP mode where clocks are stopped between single-element transfers. This mode is not supported on this device.
www.ti.com/…/spruh80c.pdf