美国银行的rd is not alway can connect to my Andriod 4.4 Smartphone
现在,我有一个新的PCBA上周我设计。美国银行的rd boots from the extenel SPI FLASH,i burnned the flash with the hex of DSPS.but when i use a app named Master Control Panel from Nordic Semiconductor try to connect the board,sometimes it can connect to MCP successfully,sometimes shows"disconnected",50% are failed.
could you tell me ,what are the real cause?can you give me some regestions?thx in advance.
