Difference between revisions of "LPC2138"
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I'm doing it from zero, since I plan to write some super cool OS for it. | I'm doing it from zero, since I plan to write some super cool OS for it. | ||
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| + | Just an update, I've successfully written some asm routines for task switching. Which is super cool IMO! Gained quite some knowledge of ARM/LPC in the process. | ||
| + | Also met some gas idiocies. ie. '''stmfd sp!, {r0-r14}^''', doesn't even exist, but gas warns about some other stuff and compiles it into '''stmfd sp, {r0-r14}^''' (no exclamation mark after sp, meaning sp isn't decremented). W/O JTAG this would be a bit more difficult. | ||
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== Memory mapping == | == Memory mapping == | ||
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== arm exception vector locations == | == arm exception vector locations == | ||
| + | Read all about that on: | ||
[[LPC2138/crt | Bootup, vectors and linker script]] | [[LPC2138/crt | Bootup, vectors and linker script]] | ||
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| − | + | [[Category: Projects]] | |
Latest revision as of 19:12, 31 January 2009
OK, LPC2138 is an ARM7TDMI, 512kB flash, 32kB ram from NXP/Philips.
I'm doing it from zero, since I plan to write some super cool OS for it.
Just an update, I've successfully written some asm routines for task switching. Which is super cool IMO! Gained quite some knowledge of ARM/LPC in the process. Also met some gas idiocies. ie. stmfd sp!, {r0-r14}^, doesn't even exist, but gas warns about some other stuff and compiles it into stmfd sp, {r0-r14}^ (no exclamation mark after sp, meaning sp isn't decremented). W/O JTAG this would be a bit more difficult.
Memory mapping
| 0x0 | flash |
| 0x4000 0000 | sram |
| 0x7fff d000 | boot block |
| 0xe000 0000 | vpb peripherals |
| 0xffe0 0000 | ahb peripherals |
arm exception vector locations
Read all about that on: Bootup, vectors and linker script
