/* * * Copyright (c) 2019 Ilya Tagunov * Copyright (c) 2019 STMicroelectronics * * SPDX-License-Identifier: Apache-2.0 */ #include #include #include #include #include #include #include #include "clock_stm32_ll_common.h" #if defined(STM32_PLL_ENABLED) /** * @brief Return PLL source */ __unused static uint32_t get_pll_source(void) { /* Configure PLL source */ if (IS_ENABLED(STM32_PLL_SRC_HSI)) { return LL_RCC_PLLSOURCE_HSI; } else if (IS_ENABLED(STM32_PLL_SRC_HSE)) { return LL_RCC_PLLSOURCE_HSE; } __ASSERT(0, "Invalid source"); return 0; } /** * @brief get the pll source frequency */ __unused uint32_t get_pllsrc_frequency(void) { if (IS_ENABLED(STM32_PLL_SRC_HSI)) { return STM32_HSI_FREQ; } else if (IS_ENABLED(STM32_PLL_SRC_HSE)) { return STM32_HSE_FREQ; } __ASSERT(0, "Invalid source"); return 0; } /** * @brief Set up pll configuration */ __unused void config_pll_sysclock(void) { LL_RCC_PLL_ConfigDomain_SYS(get_pll_source(), pllm(STM32_PLL_M_DIVISOR), STM32_PLL_N_MULTIPLIER, pllr(STM32_PLL_R_DIVISOR)); LL_RCC_PLL_EnableDomain_SYS(); } #endif /* defined(STM32_PLL_ENABLED) */ /** * @brief Activate default clocks */ void config_enable_default_clocks(void) { /* Enable the power interface clock */ LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR); }