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Added permanent memory region to store data that remains persistent even after an initialization. To delete it, the device must be fully wiped.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-08-18 19:48:13 +02:00
parent 2df878232b
commit 7738c1902e
2 changed files with 37 additions and 19 deletions
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37
src/fs/file.c
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@@ -23,6 +23,8 @@
extern const uintptr_t end_data_pool;
extern const uintptr_t start_data_pool;
extern const uintptr_t end_rom_pool;
extern const uintptr_t start_rom_pool;
extern int flash_write_data_to_file(file_t *file, const uint8_t *data, uint16_t len);
extern int flash_write_data_to_file_offset(file_t *file, const uint8_t *data, uint16_t len, uint16_t offset);
extern int flash_program_halfword (uintptr_t addr, uint16_t data);
@@ -209,19 +211,13 @@ void initialize_flash(bool hard) {
dynamic_files = 0;
}
void scan_flash() {
initialize_flash(false); //soft initialization
if (*(uintptr_t *)end_data_pool == 0xffffffff && *(uintptr_t *)(end_data_pool+sizeof(uintptr_t)) == 0xffffffff)
{
printf("First initialization (or corrupted!)\r\n");
const uint8_t empty[8] = { 0 };
flash_program_block(end_data_pool, empty, sizeof(empty));
//low_flash_available();
//wait_flash_finish();
void scan_region(bool persistent) {
uintptr_t endp = end_data_pool, startp = start_data_pool;
if (persistent) {
endp = end_rom_pool;
startp = start_rom_pool;
}
printf("SCAN\r\n");
for (uintptr_t base = flash_read_uintptr(end_data_pool); base >= start_data_pool; base = flash_read_uintptr(base)) {
for (uintptr_t base = flash_read_uintptr(endp); base >= startp; base = flash_read_uintptr(base)) {
if (base == 0x0) //all is empty
break;
@@ -239,6 +235,23 @@ void scan_flash() {
}
}
void scan_flash() {
initialize_flash(false); //soft initialization
if (*(uintptr_t *)end_data_pool == 0xffffffff && *(uintptr_t *)(end_data_pool+sizeof(uintptr_t)) == 0xffffffff)
{
printf("First initialization (or corrupted!)\r\n");
uint8_t empty[sizeof(uintptr_t)*2+sizeof(uint32_t)];
memset(empty, 0, sizeof(empty));
flash_program_block(end_data_pool, empty, sizeof(empty));
flash_program_block(end_rom_pool, empty, sizeof(empty));
//low_flash_available();
//wait_flash_finish();
}
printf("SCAN\r\n");
scan_region(true);
scan_region(false);
}
uint8_t *file_read(const uint8_t *addr) {
return flash_read((uintptr_t)addr);
}