https://community.nxp.com/t5/MPC5xxx/MPC5500-Flash-Driver-Demo-Error/m-p/775799#M11246 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I tried the MPC5500 Flash Driver on the MPC5566 and&nbsp;the Demo&nbsp;works just fine except one little thing.</P><P>pChecksum in the demo code returns a sum not equal to 0 as the content of the address range 0x00080000-0x0008001F changes from 0x00000000&nbsp;to 0xFFFFFFFF after the execution of pFlashProgram and pProgramVerify. On first execution of pFlashProgram the data is initialised to 0 as expected but something changes it at the end.</P><P></P><P>I traced the write acccess to the address 0x00080000 and this occurs only once&nbsp;during the first execution of pFlashProgram when the&nbsp;content is changed to 0x00000000&nbsp;so the code seems not to set it back to 0xFFFFFFFF.</P><P></P><P>Does anyone have an idea what happens there?</P><P></P><P>Kind regards</P></BODY></HTML> Fri, 08 Dec 2017 15:04:01 GMT michaelwichmann 2017-12-08T15:04:01Z https://community.nxp.com/t5/MPC5xxx/MPC5500-Flash-Driver-Demo-Error/m-p/775799#M11246 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I tried the MPC5500 Flash Driver on the MPC5566 and&nbsp;the Demo&nbsp;works just fine except one little thing.</P><P>pChecksum in the demo code returns a sum not equal to 0 as the content of the address range 0x00080000-0x0008001F changes from 0x00000000&nbsp;to 0xFFFFFFFF after the execution of pFlashProgram and pProgramVerify. On first execution of pFlashProgram the data is initialised to 0 as expected but something changes it at the end.</P><P></P><P>I traced the write acccess to the address 0x00080000 and this occurs only once&nbsp;during the first execution of pFlashProgram when the&nbsp;content is changed to 0x00000000&nbsp;so the code seems not to set it back to 0xFFFFFFFF.</P><P></P><P>Does anyone have an idea what happens there?</P><P></P><P>Kind regards</P></BODY></HTML> Fri, 08 Dec 2017 15:04:01 GMT https://community.nxp.com/t5/MPC5xxx/MPC5500-Flash-Driver-Demo-Error/m-p/775799#M11246 michaelwichmann 2017-12-08T15:04:01Z