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stm32f4: power: update rcc_clock_scale enum

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- Change .power_save to .voltage_scale, a pwr_vos_scale enum
- Enable pwr clock before setting VOS scale
- Fix flash wait states
- Make flash_set_ws more robust
This commit is contained in:
Jordi Pakey-Rodriguez
2018-07-07 00:20:58 -07:00
committed by Karl Palsson
parent e076c3cadd
commit cc8c8a2f83
6 changed files with 52 additions and 36 deletions
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7
lib/stm32/common/flash_common_f234.c
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@@ -39,10 +39,8 @@ speed, or <b>after</b> any decrease in clock speed.
void flash_set_ws(uint32_t ws)
{
uint32_t reg32;
reg32 = FLASH_ACR;
reg32 &= ~(FLASH_ACR_LATENCY_MASK);
reg32 |= ws;
reg32 = FLASH_ACR & ~(FLASH_ACR_LATENCY_MASK);
reg32 |= ws & FLASH_ACR_LATENCY_MASK;
FLASH_ACR = reg32;
}
@@ -117,4 +115,3 @@ void flash_wait_for_last_operation(void)
while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
}
/**@}*/