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fix #37

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- dfu cdc write exact bytes of firmware which is not a muliplier of 256.
This cause incorrect section index with uf2 drive. Solution is round up
current flash size to 256
- also fix incorrect block number causing it is impossible to use old
current.uf2 to update
This commit is contained in:
hathach 2018-12-21 12:17:14 +07:00
parent 19c3721151
commit d79fcb2ea5
1 changed files with 14 additions and 5 deletions
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19
src/usb/uf2/ghostfat.c
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@ -83,7 +83,7 @@ static struct TextFile const info[] = {
};
#define NUM_INFO (sizeof(info) / sizeof(info[0]))
#define UF2_SIZE (get_flash_size() * 2)
#define UF2_SIZE (current_flash_size() * 2)
#define UF2_SECTORS (UF2_SIZE / 512)
#define UF2_FIRST_SECTOR (NUM_INFO + 1)
#define UF2_LAST_SECTOR (UF2_FIRST_SECTOR + UF2_SECTORS - 1)
@ -120,7 +120,9 @@ static FAT_BootBlock const BootBlock = {
#define NRF_LOG_WARNING(...)
static WriteState _wr_state = { 0 };
static uint32_t get_flash_size(void)
// get current.uf2 flash size in bytes, round up to 256 bytes
static uint32_t current_flash_size(void)
{
static uint32_t flash_sz = 0;
@ -136,10 +138,17 @@ static uint32_t get_flash_size(void)
bootloader_settings_t const * boot_setting;
bootloader_util_settings_get(&boot_setting);
flash_sz = boot_setting->bank_0_size;
// Copy size must be multiple of 256 bytes
// else we will got an issue copying current.uf2
if (flash_sz & 0xff)
{
flash_sz = (flash_sz & ~0xff) + 256;
}
// if bank0 size is not valid, happens when flashed with jlink
// use maximum application size
flash_sz = boot_setting->bank_0_size;
if ( (flash_sz == 0) || (flash_sz == 0xFFFFFFFFUL) )
{
flash_sz = FLASH_SIZE;
@ -217,7 +226,7 @@ void read_block(uint32_t block_no, uint8_t *data) {
bl->magicStart1 = UF2_MAGIC_START1;
bl->magicEnd = UF2_MAGIC_END;
bl->blockNo = sectionIdx;
bl->numBlocks = FLASH_SIZE / 256;
bl->numBlocks = current_flash_size() / 256;
bl->targetAddr = addr;
bl->payloadSize = 256;
bl->flags = UF2_FLAG_FAMILYID;