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flash_internal: probe_write only tests over advertized flash (works also with linker info)

This commit is contained in:
King Kévin 2020-06-24 11:52:09 +02:00
parent 60279d0a52
commit 5a028c23c4
2 changed files with 7 additions and 8 deletions
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9
lib/flash_internal.c
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@ -324,10 +324,11 @@ uint32_t flash_internal_probe_write_size(void)
// prepare for writing the flash
flash_unlock(); // unlock flash to be able to write it
// try reading and writing the flash, page per page
uint32_t address = FLASH_BASE + DESIG_FLASH_SIZE * 1024; // start with the end of the advertised flash
if ((uint32_t)&__flash_end >= FLASH_BASE) {
address = (uint32_t)&__flash_end;
uint32_t start = FLASH_BASE + DESIG_FLASH_SIZE * 1024; // start with the end of the advertised flash
if ((uint32_t)&__flash_end >= FLASH_BASE) { // use linker flash size if provided
start = (uint32_t)&__flash_end;
}
uint32_t address = start; // address to test
const uint16_t test_data = 0x2342; // the data we will write and read to test page
while (address < 0x1FFFEFFF) { // this is where the system memory starts
// try reading the flash
@ -359,5 +360,5 @@ uint32_t flash_internal_probe_write_size(void)
SCB_CCR &= ~SCB_CCR_BFHFNMIGN; // re-enable bus fault
cm_enable_faults(); // re-enable faults
return address - FLASH_BASE;
return address - start;
}

6
lib/flash_internal.h
View File

@ -44,13 +44,11 @@ bool flash_internal_eeprom_read(uint8_t *eeprom, uint16_t size);
* @return number of bytes written (including preserved data), or negative in case of error
*/
int32_t flash_internal_eeprom_write(const uint8_t *eeprom, uint16_t size);
/** probe the real size of the internal flash
/** probe the readable size of the internal flash
* @return tested size (in bytes)
* @note it only test if the flash is readable (not writable)
*/
uint32_t flash_internal_probe_read_size(void);
/** probe the real size of the internal flash
/** probe the additional writable size of the internal flash, after the advertised size (and linker provided)
* @return tested size (in bytes)
* @warning it will write to the pages over the advertised size (it will not test the MCU advertised or linker provided size and assumes this is writable)
*/
uint32_t flash_internal_probe_write_size(void);