Kinetis Microcontrollers中的主题 Re: K70 swap indicator

K70 swap indicator

evalproj — Tue, 19 Apr 2016 19:04:40 GMT

I'm trying to determine the flash swap indicator address previously set within a Kinetis K70. From reading the data sheet I'm not clear how this is read and I've seen some posts that indicate there may be errors in these sections. If I do a FTFE Read Resource at address 0x20000 with a Resource Select Code of 0x00 it looks like the Swap IFR information is returned as :

Swap Enable Word = ( ( FTFE_FCCOB4 << 8 ) | FTFE_FCCOB5 )

Swap Indicator Address = ( ( ( FTFE_FCCOB6 << 8 ) | FTFE_FCCOB7 ) << 4 )

Is this the proper way to determine any existing flash swap indicator address in a Kinetis K70?

Re: K70 swap indicator

jeremyzhou — Thu, 21 Apr 2016 08:27:37 GMT

Hi,

After initialize the Swap system, the swap indicator address(shifted with bits[3:0] removed ) will be programmed into the IFR Swap Field, and the swap enable word will be programmed to 0x0000.

So the it's a proper way to get the swap indicator address by executing the Read Source command.
Have a great day,
Ping

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