Hi there,
I seem to be having a weird problem. I have an ELF file that I’m trying to upload onto my board, LPC1768.
I firstly erase the flash:
flash erase_address 0 0x1000
then double check that went okay:
> arm disassemble 0x130 5
0x00000130 0xffffffff (32-bit Thumb2 ...)
0x00000134 0xffffffff (32-bit Thumb2 ...)
0x00000138 0xffffffff (32-bit Thumb2 ...)
0x0000013c 0xffffffff (32-bit Thumb2 ...)
0x00000140 0xffffffff (32-bit Thumb2 ...)
next I try and upload the elf…
flash write_image /home/matthew/Development/ucont/temp/temp/main.elf
Verification will fail since checksum in image (0x00000000) to be written to flash is different from calculated vector checksum (0xefff7b48).
To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.
wrote 1136 bytes from file /home/matthew/Development/ucont/temp/temp/main.elf in 1.024985s (1.082 KiB/s)
and then I double check
> arm disassemble 0x130 5
0x00000130 0x466d MOV r5, r13
0x00000132 0xf0300d07 BICS r13, r0, #7 ; 0x00000007
0x00000136 0x46cd MOV r13, r9
0x00000138 0xf3c067fd UBFX r7, r0, #27, #30
0x0000013c 0xff01fbee (32-bit Thumb2 ...)
This should not be the code generated I even get an undefined instruction. So I uplaod a second time…
flash write_image /home/matthew/Development/ucont/temp/temp/main.elf
Verification will fail since checksum in image (0x00000000) to be written to flash is different from calculated vector checksum (0xefff7b48).
To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.
wrote 1136 bytes from file /home/matthew/Development/ucont/temp/temp/main.elf in 1.025992s (1.081 KiB/s)
and do one final check,
> arm disassemble 0x130 5
0x00000130 0x4668 MOV r0, r13
0x00000132 0xf0200107 BIC r1, r0, #7 ; 0x00000007
0x00000136 0x468d MOV r13, r1
0x00000138 0xf24023cd MOVW r3, #717 ; 0x2cd
0x0000013c 0xb501 PUSH {r0, r14}
and this is the correct code. Does anyone have any idea’s what I’m doing wrong?
Many Thanks,
Matt