TI中文支持网TMS320F28335 SCI中LOOPBACK模式是什么机理？
Susan Yang：Self-test mode
– Operates in a loopback mode receiving its own message. A "dummy" acknowledge is provided,
thereby eliminating the need for another node to provide the acknowledge bit.
LOOPBACK主要用于测试，自收自发
您可以参考下
read.pudn.com/…/Example_2833xSpi_FFDLB.c__.htm
TMS320F28335 SCI中LOOPBACK模式是什么机理？
Jingyuan Zhao：
LOOPBACK使能后Tx引脚和Rx引脚在内部相连。具体文档可参考http://www.ti.com/lit/ug/sprufz5a/sprufz5a.pdf
历程可参考controlSUITE下device_support\f2833x\v142\DSP2823x_examples_ccsv5\scia_loopback_interrupts
TMS320F28335 SCI中LOOPBACK模式是什么机理？
Seven Han：5.42 SCI Digital Loop Back (scia_loopback)
This program uses the internal loop back test mode of the peripheral. Other then boot mode pin
configuration, no other hardware configuration is required.
This test uses the loopback test mode of the SCI module to send characters starting with 0x00
through 0xFF. The test will send a character and then check the receive buffer for a correct match.
Watch Variables
LoopCount – Number of characters sent
ErrorCount – Number of errors detected
SendChar – Character sent
ReceivedChar – Character received
:\ti\controlSUITE\device_support\f2833x\v142\doc
TMS320F28335 SCI中LOOPBACK模式是什么机理？
user3588290：那我用作485通信的时候，就不用选择LOOPBACK模式对吧？就是默认的方式就行吧。
