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LPC43XX: Force target to use internal clock. 

Without this, flash write timing might be incorrect.
This commit is contained in:
Allen Ibara 2014-01-10 11:53:46 -08:00
parent 2b798fa8fc
commit 01244fc84d
1 changed files with 10 additions and 0 deletions
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10
src/lpc43xx.c
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@ -121,6 +121,7 @@ static void lpc43xx_iap_call(struct target_s *target, struct flash_param *param,
static int lpc43xx_flash_prepare(struct target_s *target, uint32_t addr, int len);
static int lpc43xx_flash_erase(struct target_s *target, uint32_t addr, int len);
static int lpc43xx_flash_write(struct target_s *target, uint32_t dest, const uint8_t *src, int len);
static void lpc43xx_set_internal_clock(struct target_s *target);
const struct command_s lpc43xx_cmd_list[] = {
{"erase_mass", lpc43xx_cmd_erase, "Erase entire flash memory"},
@ -255,6 +256,9 @@ static int lpc43xx_flash_init(struct target_s *target)
{
struct flash_program flash_pgm;
/* Force internal clock */
lpc43xx_set_internal_clock(target);
/* Initialize flash IAP */
flash_pgm.p.command = IAP_CMD_INIT;
flash_pgm.p.result[0] = IAP_STATUS_CMD_SUCCESS;
@ -427,6 +431,12 @@ lpc43xx_flash_erase(struct target_s *target, uint32_t addr, int len)
return 0;
}
static void lpc43xx_set_internal_clock(struct target_s *target)
{
const uint32_t val2 = (1 << 11) | (1 << 24);
target_mem_write_words(target, 0x40050000 + 0x06C, &val2, sizeof(val2));
}
static int lpc43xx_flash_write(struct target_s *target, uint32_t dest, const uint8_t *src, int len)
{
unsigned first_chunk = dest / IAP_PGM_CHUNKSIZE;