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Use flash memory to emulate EEPROM (#11500)

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Use a sector of the LPC flash memory to emulate EEPROM storage, removing the need to have an SD card to store system parameters.
This commit is contained in:
Andy Shaw
2018-08-14 07:19:34 +01:00
committed by Scott Lahteine
parent 6964e1a95a
commit 5be2559eda
4 changed files with 208 additions and 41 deletions
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6
frameworks/CMSIS/LPC1768/system/LPC1768.ld
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@ -1,8 +1,10 @@
/* Linker script for mbed LPC1768 */
MEMORY
{
//FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 512K
FLASH (rx) : ORIGIN = 16K, LENGTH = (512K - 16K)
/* Reserve first 16K (4 sectors * 4KB) for bootloader
* Reserve the last 32KB sector for EEPROM emulation
*/
FLASH (rx) : ORIGIN = 16K, LENGTH = (512K - 48K)
RAM (rwx) : ORIGIN = 0x100000C8, LENGTH = (32K - 0xC8)
USB_RAM(rwx) : ORIGIN = 0x2007C000, LENGTH = 16K