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Adding some kind of permanent flash memory that does not wipe out when initializing.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos
2022-04-11 11:37:41 +02:00
parent 2f1f8e0c90
commit 3781777138
1 changed files with 2 additions and 1 deletions
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3
src/fs/flash.c
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@@ -35,11 +35,12 @@
*/
#define FLASH_TARGET_OFFSET (PICO_FLASH_SIZE_BYTES >> 1) // DATA starts at the mid of flash
#define FLASH_DATA_HEADER_SIZE (sizeof(uintptr_t)+sizeof(uint32_t))
#define FLASH_PERMANENT_REGION (4*FLASH_SECTOR_SIZE) // 4 sectors (16kb) of permanent memory
//To avoid possible future allocations, data region starts at the end of flash and goes upwards to the center region
const uintptr_t start_data_pool = (XIP_BASE + FLASH_TARGET_OFFSET);
const uintptr_t end_data_pool = (XIP_BASE + PICO_FLASH_SIZE_BYTES)-FLASH_DATA_HEADER_SIZE; //This is a fixed value. DO NOT CHANGE
const uintptr_t end_data_pool = (XIP_BASE + PICO_FLASH_SIZE_BYTES)-FLASH_DATA_HEADER_SIZE-FLASH_PERMANENT_REGION; //This is a fixed value. DO NOT CHANGE
#define FLASH_ADDR_DATA_STORAGE_START start_data_pool
extern int flash_program_block(uintptr_t addr, const uint8_t *data, size_t len);