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stmhal/modmachine: Fix clearing of reset-cause flags. 

To reset the flags we should write to the single bit only, not the entire
register (otherwise all other settings in the register are cleared).

Fixes #2457.
This commit is contained in:
Damien George 2016-09-27 15:49:35 +10:00
parent 7385b018ed
commit 88ca7ff565
1 changed files with 2 additions and 2 deletions
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4
stmhal/modmachine.c
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@ -68,7 +68,7 @@ void machine_init(void) {
if (PWR->CSR & PWR_CSR_SBF) {
// came out of standby
reset_cause = PYB_RESET_DEEPSLEEP;
PWR->CR = PWR_CR_CSBF;
PWR->CR |= PWR_CR_CSBF;
} else
#endif
{
@ -86,7 +86,7 @@ void machine_init(void) {
}
}
// clear RCC reset flags
RCC->CSR = RCC_CSR_RMVF;
RCC->CSR |= RCC_CSR_RMVF;
}
// machine.info([dump_alloc_table])