在mmwavestudio中,点完帧触发后,是经历了什么过程让1642的Tx开始发射chirp的。是串口通过SPI配置寄存器,还是硬件管脚的触发?
或者说IWR1642的触发机制是什么?
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在mmwavestudio中,点完帧触发后,是经历了什么过程让1642的Tx开始发射chirp的。是串口通过SPI配置寄存器,还是硬件管脚的触发?
或者说IWR1642的触发机制是什么?
点击帧触发后,PC会通过SPI口发送ar1.StartFrame命令给IWR1642开发板,IWR1642根据收到的命令去触发TX发射chirp,这是软件触发。请参考下面的帖子说明。
"Trigger frames" is basically a notification to the mmwave Sensor to start the frame transmission and send the data out on LVDS lanes。
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1023516/dca1000evm-how-to-get-a-response-from-the-dca1000evm-when-triggering-frames