LPC MicrocontrollersのトピックISP Go command from RAM https://community.nxp.com/t5/LPC-Microcontrollers/ISP-Go-command-from-RAM/m-p/742067#M29910 <HTML><HEAD></HEAD><BODY><P>I'm working with LPC2378 using Keil 4 ARM. I've made little program with function in RAM at location 0x40002000 which&nbsp; initializes WDT and go into endless loop without WDT feed, so WDT reset happens. Everything works OK.</P><P>Then I wrote ISP routine that writes to RAM (same locations) the same bytes that compiler generated (I noted them in listing of RAM function). With FlashMagic tool I checked that they are written at 0x40002000 and that are the same as compiler generated bytes of above mentioned code. That was everything right. <BR />Back to my ISP routine- after writing bytes (code) in RAM, I sent ISP Go command (0x30 was return value- that is OK)&nbsp; to 0x40002000 in Arm mode, but Watchdog reset doesn't happened.</P><P><BR />Regards</P></BODY></HTML> Tue, 13 Feb 2018 22:00:22 GMT zorandjokic 2018-02-13T22:00:22Z ISP Go command from RAM https://community.nxp.com/t5/LPC-Microcontrollers/ISP-Go-command-from-RAM/m-p/742067#M29910 <HTML><HEAD></HEAD><BODY><P>I'm working with LPC2378 using Keil 4 ARM. I've made little program with function in RAM at location 0x40002000 which&nbsp; initializes WDT and go into endless loop without WDT feed, so WDT reset happens. Everything works OK.</P><P>Then I wrote ISP routine that writes to RAM (same locations) the same bytes that compiler generated (I noted them in listing of RAM function). With FlashMagic tool I checked that they are written at 0x40002000 and that are the same as compiler generated bytes of above mentioned code. That was everything right. <BR />Back to my ISP routine- after writing bytes (code) in RAM, I sent ISP Go command (0x30 was return value- that is OK)&nbsp; to 0x40002000 in Arm mode, but Watchdog reset doesn't happened.</P><P><BR />Regards</P></BODY></HTML> Tue, 13 Feb 2018 22:00:22 GMT https://community.nxp.com/t5/LPC-Microcontrollers/ISP-Go-command-from-RAM/m-p/742067#M29910 zorandjokic 2018-02-13T22:00:22Z Re: ISP Go command from RAM https://community.nxp.com/t5/LPC-Microcontrollers/ISP-Go-command-from-RAM/m-p/742068#M29911 <HTML><HEAD></HEAD><BODY><P>I found where the error were. I should write byte (that represents RAM code) in reverse order. When doing so, code works as expected.</P><P></P><P>Regards</P></BODY></HTML> Wed, 14 Feb 2018 10:51:20 GMT https://community.nxp.com/t5/LPC-Microcontrollers/ISP-Go-command-from-RAM/m-p/742068#M29911 zorandjokic 2018-02-14T10:51:20Z