| ??? 08/26/09 06:45 Read: times |
#168551 - beware of "bootloader updater" Responding to: ???'s previous message |
John D. Maniraj said:
Just after posting my query (before I read the replies), I tried programming the boot loader to BLOCK1 and my code to BLOCK0, I tried with two versions of boot loader which I got from Andrew's website, still no success. *Two* versions? I know only of one: http://www.flashmagictool.com/assets/re...Update.zip . Beware, this is an "updater", not the bootloader itself (it does contain the bootloader, though, and COULD be made workable, but that's not quite trivial). It is supposed to be programmed to BLOCK0 while the original bootloader still sits in BLOCK1, and then upon subsequent running of the chip, running from BLOCK0 it would reprogram BLOCK1. But that won't work if you program it into BLOCK1 (besides, it is bigger than the 8kB of BLOCK1, isn't it?) You need a genuine bootloader to be programmed to BLOCK1. John D. Maniraj said:
I will try as suggested, by getting the boot loader from the NXP site. Do that, or try to read it out from a factory-new chip. Also, I don't know how exactly does your programmer work. After programming both BLOCK0 and BLOCK1, double-check if they are programmed properly, and if the programmer did not perform a spurious chiperase between programming both blocks (it should not, but one never knows, bugs happen). JW |
| Topic | Author | Date |
| P89V51RD2 from NXP programming problem | 01/01/70 00:00 | |
| you need a "bootloader" | 01/01/70 00:00 | |
| NXP Device Resources | 01/01/70 00:00 | |
| ... and more... | 01/01/70 00:00 | |
| P89V51RD2 from NXP programming problem | 01/01/70 00:00 | |
| beware of "bootloader updater" | 01/01/70 00:00 | |
| Probably boot loader confusion | 01/01/70 00:00 | |
| questions, questions, questions | 01/01/70 00:00 | |
| Tried boot loader update | 01/01/70 00:00 | |
| try this | 01/01/70 00:00 | |
ISP did not work | 01/01/70 00:00 |