ttrftech/NanoVNA
1
0
Fork 0
mirror of https://github.com/ttrftech/NanoVNA.git synced 2026-04-06 23:14:10 +00:00
Code Issues Projects Releases Packages Wiki Activity

add areas to save/recall

Browse source
This commit is contained in:
TT 2016-11-05 01:22:48 +09:00
parent faaf6dd353
commit 38d6a50047
4 changed files with 100 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

53
flash.c
View file

@ -38,15 +38,14 @@ void flash_program_half_word(uint32_t address, uint16_t data)
FLASH->CR &= ~FLASH_CR_PG;
}
void flash_unlock(void) {
void flash_unlock(void)
{
// unlock sequence
FLASH->KEYR = 0x45670123;
FLASH->KEYR = 0xCDEF89AB;
}
config_t cal_saved1 __attribute__ ((section(".calsave")));
static uint32_t
checksum(void *start, size_t len)
{
@ -58,40 +57,64 @@ checksum(void *start, size_t len)
return value;
}
#define SAVEAREA_MAX 5
const uint32_t saveareas[] =
{ 0x08018800, 0x0801a000, 0x0801b800, 0x0801d000, 0x0801e8000 };
#define FLASH_PAGESIZE 0x800
int
caldata_save(void)
caldata_save(int id)
{
uint16_t *src = (uint16_t*)&current_config;
uint16_t *dst = (uint16_t*)&cal_saved1;
int count = sizeof current_config / sizeof(uint16_t);
uint16_t *dst;
int count = sizeof(config_t) / sizeof(uint16_t);
if (id < 0 || id >= SAVEAREA_MAX)
return -1;
dst = (uint16_t*)saveareas[id];
current_config.magic = CONFIG_MAGIC;
current_config.checksum = 0;
current_config.checksum = checksum(&current_config, sizeof current_config);
flash_unlock();
flash_erase_page(0x801e800);
flash_erase_page(0x801f000);
flash_erase_page(0x801f800);
flash_erase_page((uint32_t)dst);
void *p = dst;
void *tail = p + sizeof(config_t);
while (p < tail) {
flash_erase_page((uint32_t)p);
p += FLASH_PAGESIZE;
}
while(count-- > 0) {
flash_program_half_word((uint32_t)dst, *src++);
dst++;
}
active = (config_t*)saveareas[id];
return 0;
}
int
caldata_recall(void)
caldata_recall(int id)
{
void *src = &cal_saved1;
config_t *src;
void *dst = &current_config;
if (cal_saved1.magic != CONFIG_MAGIC)
if (id < 0 || id >= SAVEAREA_MAX)
return -1;
if (checksum(&cal_saved1, sizeof cal_saved1) != 0)
src = (config_t*)saveareas[id];
if (src->magic != CONFIG_MAGIC)
return -1;
if (checksum(src, sizeof(config_t)) != 0)
return -1;
memcpy(dst, src, sizeof current_config);
#if 0
memcpy(dst, src, sizeof(config_t));
#else
active = src;
#endif
return 0;
}