updated linkerscript to show correct sizes + added profiles location (for lpc1756)

Author: itzandroidtab

linkerscript.ld

@@ -17,7 +17,8 @@ Memories definitions
 */
 MEMORY
 {
-    rom (rx) : org = 0x00000000 + 8k, len = 256k
+    rom (rx) : org = 0x00000000 + 8k, len = 256k - 8k - 32k
+    profiles (r) : org = 0x00000000 + 256k - 32k, len = 32k
     ram (rwx) : org = 0x10000000, len = 16k
     ram1 (rwx) : org = 0x2007C000, len = 16k
 }

main.cpp

@@ -142,6 +142,7 @@ int main() {
     using flash = target::io::flash;
 
     // the range where we store the keys is 0x38000 - 0x40000
+    // TODO: use the region from the linkerscript
     constexpr static uint32_t key_start = 0x38000;
     constexpr static uint32_t key_end = 0x40000;
 

readme.md

@@ -28,6 +28,7 @@ Additional pictures can be found [here](./img/)
 * support for different intervals
 * support for 8 digit keys
 * add support for more than 32 profiles (needs a rework if more profiles are required. The profiles are copied to ram and there is not enough for more at the moment. If we leave them in flash we can store a lot more)
+* support for reading the profile locations from the linkerscript instead of hardcoded
 
 ### Compiling
 TOTP uses [klib](https://github.com/itzandroidtab/klib). This repo can be cloned in the klib project folder. See [build.yml](./.github/workflows/build.yml) for more info on compiling this project.