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| author | Marti Bolivar <mbolivar@leaflabs.com> | 2012-03-26 15:21:25 -0400 |
|---|---|---|
| committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-04-11 16:56:55 -0400 |
| commit | 6632789976b804889494dc1e7aea51181d4ca754 (patch) | |
| tree | e715e819604bdb5a1dd32b673b08abcd7cbc5e85 /libmaple | |
| parent | 382da37cda44204331d57939c596d768cbd0e188 (diff) | |
| download | librambutan-6632789976b804889494dc1e7aea51181d4ca754.tar.gz librambutan-6632789976b804889494dc1e7aea51181d4ca754.zip | |
rcc_reconfigure_pll(): Assert that the PLL is disabled.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'libmaple')
| -rw-r--r-- | libmaple/stm32f1/rcc.c | 3 | ||||
| -rw-r--r-- | libmaple/stm32f2/rcc.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/libmaple/stm32f1/rcc.c b/libmaple/stm32f1/rcc.c index a9c9c3a..0752b82 100644 --- a/libmaple/stm32f1/rcc.c +++ b/libmaple/stm32f1/rcc.c @@ -139,6 +139,9 @@ void rcc_configure_pll(rcc_pll_cfg *pll_cfg) { rcc_pll_multiplier pll_mul = data->pll_mul; uint32 cfgr; + /* Check that the PLL is disabled. */ + ASSERT_FAULT(!rcc_is_clk_on(RCC_CLK_PLL)); + cfgr = RCC_BASE->CFGR; cfgr &= ~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLMUL); cfgr |= pll_cfg->pllsrc | pll_mul; diff --git a/libmaple/stm32f2/rcc.c b/libmaple/stm32f2/rcc.c index b94f2e6..46e6565 100644 --- a/libmaple/stm32f2/rcc.c +++ b/libmaple/stm32f2/rcc.c @@ -173,6 +173,9 @@ void rcc_configure_pll(rcc_pll_cfg *pll_cfg) { stm32f2_rcc_pll_data *data = pll_cfg->data; uint32 pllcfgr; + /* Check that the PLL is disabled. */ + ASSERT_FAULT(!rcc_is_clk_on(RCC_CLK_PLL)); + /* Sanity-check all the parameters */ ASSERT_FAULT((data->pllq >= 4) && (data->pllq <= 15)); ASSERT_FAULT((data->pllp >= 2) && (data->pllp <= 8)); |