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authorStephen Caudle2011-10-31 00:24:47 -0400
committerStephen Caudle2011-10-31 00:41:19 -0400
commit5a89d4459146edfb073e8ffa299cd9598a98c27c (patch)
tree8b2b4cd7da3bec9f611c6917c7434faa1fd8ab87 /include/libopencm3/stm32/f4/rcc.h
parent05bc9d10f15332358b18014d335a79fa3f4ed21c (diff)
Add initial support for STM32F4
Diffstat (limited to 'include/libopencm3/stm32/f4/rcc.h')
-rw-r--r--include/libopencm3/stm32/f4/rcc.h515
1 files changed, 515 insertions, 0 deletions
diff --git a/include/libopencm3/stm32/f4/rcc.h b/include/libopencm3/stm32/f4/rcc.h
new file mode 100644
index 0000000..debeeda
--- /dev/null
+++ b/include/libopencm3/stm32/f4/rcc.h
@@ -0,0 +1,515 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2009 Federico Ruiz-Ugalde <memeruiz at gmail dot com>
+ * Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
+ * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_RCC_H
+#define LIBOPENCM3_RCC_H
+
+#include <libopencm3/stm32/memorymap.h>
+#include <libopencm3/cm3/common.h>
+
+/* --- RCC registers ------------------------------------------------------- */
+
+#define RCC_CR MMIO32(RCC_BASE + 0x00)
+#define RCC_PLLCFGR MMIO32(RCC_BASE + 0x04)
+#define RCC_CFGR MMIO32(RCC_BASE + 0x08)
+#define RCC_CIR MMIO32(RCC_BASE + 0x0c)
+#define RCC_AHB1RSTR MMIO32(RCC_BASE + 0x10)
+#define RCC_AHB2RSTR MMIO32(RCC_BASE + 0x14)
+#define RCC_AHB3RSTR MMIO32(RCC_BASE + 0x18)
+/* RCC_BASE + 0x1c Reserved */
+#define RCC_APB1RSTR MMIO32(RCC_BASE + 0x20)
+#define RCC_APB2RSTR MMIO32(RCC_BASE + 0x24)
+/* RCC_BASE + 0x28 Reserved */
+/* RCC_BASE + 0x2c Reserved */
+#define RCC_AHB1ENR MMIO32(RCC_BASE + 0x30)
+#define RCC_AHB2ENR MMIO32(RCC_BASE + 0x34)
+#define RCC_AHB3ENR MMIO32(RCC_BASE + 0x38)
+/* RCC_BASE + 0x3c Reserved */
+#define RCC_APB1ENR MMIO32(RCC_BASE + 0x40)
+#define RCC_APB2ENR MMIO32(RCC_BASE + 0x44)
+/* RCC_BASE + 0x48 Reserved */
+/* RCC_BASE + 0x4c Reserved */
+#define RCC_AHB1LPENR MMIO32(RCC_BASE + 0x50)
+#define RCC_AHB2LPENR MMIO32(RCC_BASE + 0x54)
+#define RCC_AHB3LPENR MMIO32(RCC_BASE + 0x58)
+/* RCC_BASE + 0x5c Reserved */
+#define RCC_APB1LPENR MMIO32(RCC_BASE + 0x60)
+#define RCC_APB2LPENR MMIO32(RCC_BASE + 0x64)
+/* RCC_BASE + 0x68 Reserved */
+/* RCC_BASE + 0x6c Reserved */
+#define RCC_BDCR MMIO32(RCC_BASE + 0x70)
+#define RCC_CSR MMIO32(RCC_BASE + 0x74)
+/* RCC_BASE + 0x78 Reserved */
+/* RCC_BASE + 0x7c Reserved */
+#define RCC_SSCGR MMIO32(RCC_BASE + 0x80)
+#define RCC_PLLI2SCFGR MMIO32(RCC_BASE + 0x84)
+
+/* --- RCC_CR values ------------------------------------------------------- */
+
+#define RCC_CR_PLLI2SRDY (1 << 27)
+#define RCC_CR_PLLI2SON (1 << 26)
+#define RCC_CR_PLLRDY (1 << 25)
+#define RCC_CR_PLLON (1 << 24)
+#define RCC_CR_CSSON (1 << 19)
+#define RCC_CR_HSEBYP (1 << 18)
+#define RCC_CR_HSERDY (1 << 17)
+#define RCC_CR_HSEON (1 << 16)
+/* HSICAL: [15:8] */
+/* HSITRIM: [7:3] */
+#define RCC_CR_HSIRDY (1 << 1)
+#define RCC_CR_HSION (1 << 0)
+
+/* --- RCC_PLLCFGR values ------------------------------------------------------- */
+
+/* PLLQ: [27:24] */
+#define RCC_PLLCFGR_PLLQ_SHIFT 24
+#define RCC_PLLCFGR_PLLSRC (1 << 22)
+/* PLLP: [17:16] */
+#define RCC_PLLCFGR_PLLP_SHIFT 16
+/* PLLN: [14:6] */
+#define RCC_PLLCFGR_PLLN_SHIFT 6
+/* PLLM: [5:0] */
+#define RCC_PLLCFGR_PLLM_SHIFT 0
+
+/* --- RCC_CFGR values ----------------------------------------------------- */
+
+/* MCO2: Microcontroller clock output 2 */
+#define RCC_CFGR_MCO2_SHIFT 30
+#define RCC_CFGR_MCO2_SYSCLK 0x0
+#define RCC_CFGR_MCO2_PLLI2S 0x1
+#define RCC_CFGR_MCO2_HSE 0x2
+#define RCC_CFGR_MCO2_PLL 0x3
+
+/* MCO1/2PRE: MCO Prescalers */
+#define RCC_CFGR_MCO2PRE_SHIFT 27
+#define RCC_CFGR_MCO1PRE_SHIFT 24
+#define RCC_CFGR_MCOPRE_DIV_NONE 0x0
+#define RCC_CFGR_MCOPRE_DIV_2 0x4
+#define RCC_CFGR_MCOPRE_DIV_3 0x5
+#define RCC_CFGR_MCOPRE_DIV_4 0x6
+#define RCC_CFGR_MCOPRE_DIV_5 0x7
+
+/* I2SSRC: I2S clock selection */
+#define RCC_CFGR_I2SSRC (1 << 23)
+
+/* MCO1: Microcontroller clock output 1 */
+#define RCC_CFGR_MCO1_SHIFT 21
+#define RCC_CFGR_MCO1_HSI 0x0
+#define RCC_CFGR_MCO1_LSE 0x1
+#define RCC_CFGR_MCO1_HSE 0x2
+#define RCC_CFGR_MCO1_PLL 0x3
+
+/* RTCPRE: HSE division factor for RTC clock */
+#define RCC_CFGR_RTCPRE_SHIFT 21
+
+/* PPRE1/2: APB high-speed prescalers */
+#define RCC_CFGR_PPRE2_SHIFT 13
+#define RCC_CFGR_PPRE1_SHIFT 10
+#define RCC_CFGR_PPRE_DIV_NONE 0x0
+#define RCC_CFGR_PPRE_DIV_2 0x4
+#define RCC_CFGR_PPRE_DIV_4 0x5
+#define RCC_CFGR_PPRE_DIV_8 0x6
+#define RCC_CFGR_PPRE_DIV_16 0x7
+
+/* HPRE: AHB high-speed prescaler */
+#define RCC_CFGR_HPRE_SHIFT 4
+#define RCC_CFGR_HPRE_DIV_NONE 0x0
+#define RCC_CFGR_HPRE_DIV_2 (0x8+0)
+#define RCC_CFGR_HPRE_DIV_4 (0x8+1)
+#define RCC_CFGR_HPRE_DIV_8 (0x8+2)
+#define RCC_CFGR_HPRE_DIV_16 (0x8+3)
+#define RCC_CFGR_HPRE_DIV_64 (0x8+4)
+#define RCC_CFGR_HPRE_DIV_128 (0x8+5)
+#define RCC_CFGR_HPRE_DIV_256 (0x8+6)
+#define RCC_CFGR_HPRE_DIV_512 (0x8+7)
+
+/* SWS: System clock switch status */
+#define RCC_CFGR_SWS_SHIFT 2
+#define RCC_CFGR_SWS_HSI 0x0
+#define RCC_CFGR_SWS_HSE 0x1
+#define RCC_CFGR_SWS_PLL 0x2
+
+/* SW: System clock switch */
+#define RCC_CFGR_SW_SHIFT 0
+#define RCC_CFGR_SW_HSI 0x0
+#define RCC_CFGR_SW_HSE 0x1
+#define RCC_CFGR_SW_PLL 0x2
+
+/* --- RCC_CIR values ------------------------------------------------------ */
+
+/* Clock security system interrupt clear bit */
+#define RCC_CIR_CSSC (1 << 23)
+
+/* OSC ready interrupt clear bits */
+#define RCC_CIR_PLLI2SRDYC (1 << 21)
+#define RCC_CIR_PLLRDYC (1 << 20)
+#define RCC_CIR_HSERDYC (1 << 19)
+#define RCC_CIR_HSIRDYC (1 << 18)
+#define RCC_CIR_LSERDYC (1 << 17)
+#define RCC_CIR_LSIRDYC (1 << 16)
+
+/* OSC ready interrupt enable bits */
+#define RCC_CIR_PLLI2SRDYIE (1 << 13)
+#define RCC_CIR_PLLRDYIE (1 << 12)
+#define RCC_CIR_HSERDYIE (1 << 11)
+#define RCC_CIR_HSIRDYIE (1 << 10)
+#define RCC_CIR_LSERDYIE (1 << 9)
+#define RCC_CIR_LSIRDYIE (1 << 8)
+
+/* Clock security system interrupt flag bit */
+#define RCC_CIR_CSSF (1 << 7)
+
+/* OSC ready interrupt flag bits */
+#define RCC_CIR_PLLI2SRDYF (1 << 5)
+#define RCC_CIR_PLLRDYF (1 << 4)
+#define RCC_CIR_HSERDYF (1 << 3)
+#define RCC_CIR_HSIRDYF (1 << 2)
+#define RCC_CIR_LSERDYF (1 << 1)
+#define RCC_CIR_LSIRDYF (1 << 0)
+
+/* --- RCC_AHB1RSTR values ------------------------------------------------- */
+
+#define RCC_AHB1RSTR_OTGHSRST (1 << 29)
+#define RCC_AHB1RSTR_ETHMACRST (1 << 25)
+#define RCC_AHB1RSTR_DMA2RST (1 << 22)
+#define RCC_AHB1RSTR_DMA1RST (1 << 21)
+#define RCC_AHB1RSTR_CRCRST (1 << 12)
+#define RCC_AHB1RSTR_IOPIRST (1 << 8)
+#define RCC_AHB1RSTR_IOPHRST (1 << 7)
+#define RCC_AHB1RSTR_IOPGRST (1 << 6)
+#define RCC_AHB1RSTR_IOPFRST (1 << 5)
+#define RCC_AHB1RSTR_IOPERST (1 << 4)
+#define RCC_AHB1RSTR_IOPDRST (1 << 3)
+#define RCC_AHB1RSTR_IOPCRST (1 << 2)
+#define RCC_AHB1RSTR_IOPBRST (1 << 1)
+#define RCC_AHB1RSTR_IOPARST (1 << 0)
+
+/* --- RCC_AHB2RSTR values ------------------------------------------------- */
+
+#define RCC_AHB2RSTR_OTGFSRST (1 << 7)
+#define RCC_AHB2RSTR_RNGRST (1 << 6)
+#define RCC_AHB2RSTR_HASHRST (1 << 5)
+#define RCC_AHB2RSTR_CRYPRST (1 << 4)
+#define RCC_AHB2RSTR_DCMIRST (1 << 0)
+
+/* --- RCC_AHB3RSTR values ------------------------------------------------- */
+
+#define RCC_AHB3RSTR_FSMCRST (1 << 0)
+
+/* --- RCC_APB1RSTR values ------------------------------------------------- */
+
+#define RCC_APB1RSTR_DACRST (1 << 29)
+#define RCC_APB1RSTR_PWRRST (1 << 28)
+#define RCC_APB1RSTR_CAN2RST (1 << 26)
+#define RCC_APB1RSTR_CAN1RST (1 << 25)
+#define RCC_APB1RSTR_I2C3RST (1 << 23)
+#define RCC_APB1RSTR_I2C2RST (1 << 22)
+#define RCC_APB1RSTR_I2C1RST (1 << 21)
+#define RCC_APB1RSTR_USART5RST (1 << 20)
+#define RCC_APB1RSTR_USART4RST (1 << 19)
+#define RCC_APB1RSTR_USART3RST (1 << 18)
+#define RCC_APB1RSTR_USART2RST (1 << 17)
+#define RCC_APB1RSTR_SPI3RST (1 << 15)
+#define RCC_APB1RSTR_SPI2RST (1 << 14)
+#define RCC_APB1RSTR_WWDGRST (1 << 11)
+#define RCC_APB1RSTR_TIM14RST (1 << 8)
+#define RCC_APB1RSTR_TIM13RST (1 << 7)
+#define RCC_APB1RSTR_TIM12RST (1 << 6)
+#define RCC_APB1RSTR_TIM7RST (1 << 5)
+#define RCC_APB1RSTR_TIM6RST (1 << 4)
+#define RCC_APB1RSTR_TIM5RST (1 << 3)
+#define RCC_APB1RSTR_TIM4RST (1 << 2)
+#define RCC_APB1RSTR_TIM3RST (1 << 1)
+#define RCC_APB1RSTR_TIM2RST (1 << 0)
+
+/* --- RCC_APB2RSTR values ------------------------------------------------- */
+
+#define RCC_APB2RSTR_TIM11RST (1 << 18)
+#define RCC_APB2RSTR_TIM10RST (1 << 17)
+#define RCC_APB2RSTR_TIM9RST (1 << 16)
+#define RCC_APB2RSTR_SYSCFGRST (1 << 14)
+#define RCC_APB2RSTR_SPI1RST (1 << 12)
+#define RCC_APB2RSTR_SDIORST (1 << 11)
+#define RCC_APB2RSTR_ADCRST (1 << 8)
+#define RCC_APB2RSTR_USART6RST (1 << 5)
+#define RCC_APB2RSTR_USART1RST (1 << 4)
+#define RCC_APB2RSTR_TIM8RST (1 << 1)
+#define RCC_APB2RSTR_TIM1RST (1 << 0)
+
+/* --- RCC_AHB1ENR values ------------------------------------------------- */
+
+#define RCC_AHB1ENR_OTGHSULPIEN (1 << 30)
+#define RCC_AHB1ENR_OTGHSEN (1 << 29)
+#define RCC_AHB1ENR_ETHMACPTPEN (1 << 28)
+#define RCC_AHB1ENR_ETHMACRXEN (1 << 27)
+#define RCC_AHB1ENR_ETHMACTXEN (1 << 26)
+#define RCC_AHB1ENR_ETHMACEN (1 << 25)
+#define RCC_AHB1ENR_DMA2EN (1 << 22)
+#define RCC_AHB1ENR_DMA1EN (1 << 21)
+#define RCC_AHB1ENR_BKPSRAMEN (1 << 18)
+#define RCC_AHB1ENR_CRCEN (1 << 12)
+#define RCC_AHB1ENR_IOPIEN (1 << 8)
+#define RCC_AHB1ENR_IOPHEN (1 << 7)
+#define RCC_AHB1ENR_IOPGEN (1 << 6)
+#define RCC_AHB1ENR_IOPFEN (1 << 5)
+#define RCC_AHB1ENR_IOPEEN (1 << 4)
+#define RCC_AHB1ENR_IOPDEN (1 << 3)
+#define RCC_AHB1ENR_IOPCEN (1 << 2)
+#define RCC_AHB1ENR_IOPBEN (1 << 1)
+#define RCC_AHB1ENR_IOPAEN (1 << 0)
+
+/* --- RCC_AHB2ENR values ------------------------------------------------- */
+
+#define RCC_AHB2ENR_OTGFSEN (1 << 7)
+#define RCC_AHB2ENR_RNGEN (1 << 6)
+#define RCC_AHB2ENR_HASHEN (1 << 5)
+#define RCC_AHB2ENR_CRYPEN (1 << 4)
+#define RCC_AHB2ENR_DCMIEN (1 << 0)
+
+/* --- RCC_AHB3ENR values ------------------------------------------------- */
+
+#define RCC_AHB3ENR_FSMCEN (1 << 0)
+
+/* --- RCC_APB1ENR values ------------------------------------------------- */
+
+#define RCC_APB1ENR_DACEN (1 << 29)
+#define RCC_APB1ENR_PWREN (1 << 28)
+#define RCC_APB1ENR_CAN2EN (1 << 26)
+#define RCC_APB1ENR_CAN1EN (1 << 25)
+#define RCC_APB1ENR_I2C3EN (1 << 23)
+#define RCC_APB1ENR_I2C2EN (1 << 22)
+#define RCC_APB1ENR_I2C1EN (1 << 21)
+#define RCC_APB1ENR_USART5EN (1 << 20)
+#define RCC_APB1ENR_USART4EN (1 << 19)
+#define RCC_APB1ENR_USART3EN (1 << 18)
+#define RCC_APB1ENR_USART2EN (1 << 17)
+#define RCC_APB1ENR_SPI3EN (1 << 15)
+#define RCC_APB1ENR_SPI2EN (1 << 14)
+#define RCC_APB1ENR_WWDGEN (1 << 11)
+#define RCC_APB1ENR_TIM14EN (1 << 8)
+#define RCC_APB1ENR_TIM13EN (1 << 7)
+#define RCC_APB1ENR_TIM12EN (1 << 6)
+#define RCC_APB1ENR_TIM7EN (1 << 5)
+#define RCC_APB1ENR_TIM6EN (1 << 4)
+#define RCC_APB1ENR_TIM5EN (1 << 3)
+#define RCC_APB1ENR_TIM4EN (1 << 2)
+#define RCC_APB1ENR_TIM3EN (1 << 1)
+#define RCC_APB1ENR_TIM2EN (1 << 0)
+
+/* --- RCC_APB2ENR values ------------------------------------------------- */
+
+#define RCC_APB2ENR_TIM11EN (1 << 18)
+#define RCC_APB2ENR_TIM10EN (1 << 17)
+#define RCC_APB2ENR_TIM9EN (1 << 16)
+#define RCC_APB2ENR_SYSCFGEN (1 << 14)
+#define RCC_APB2ENR_SPI1EN (1 << 12)
+#define RCC_APB2ENR_SDIOEN (1 << 11)
+#define RCC_APB2ENR_ADC3EN (1 << 10)
+#define RCC_APB2ENR_ADC2EN (1 << 9)
+#define RCC_APB2ENR_ADC1EN (1 << 8)
+#define RCC_APB2ENR_USART6EN (1 << 5)
+#define RCC_APB2ENR_USART1EN (1 << 4)
+#define RCC_APB2ENR_TIM8EN (1 << 1)
+#define RCC_APB2ENR_TIM1EN (1 << 0)
+
+/* --- RCC_AHB1LPENR values ------------------------------------------------- */
+
+#define RCC_AHB1LPENR_OTGHSULPILPEN (1 << 30)
+#define RCC_AHB1LPENR_OTGHSLPEN (1 << 29)
+#define RCC_AHB1LPENR_ETHMACPTPLPEN (1 << 28)
+#define RCC_AHB1LPENR_ETHMACRXLPEN (1 << 27)
+#define RCC_AHB1LPENR_ETHMACTXLPEN (1 << 26)
+#define RCC_AHB1LPENR_ETHMACLPEN (1 << 25)
+#define RCC_AHB1LPENR_DMA2LPEN (1 << 22)
+#define RCC_AHB1LPENR_DMA1LPEN (1 << 21)
+#define RCC_AHB1LPENR_BKPSRAMLPEN (1 << 18)
+#define RCC_AHB1LPENR_SRAM2LPEN (1 << 17)
+#define RCC_AHB1LPENR_SRAM1LPEN (1 << 16)
+#define RCC_AHB1LPENR_FLITFLPEN (1 << 15)
+#define RCC_AHB1LPENR_CRCLPEN (1 << 12)
+#define RCC_AHB1LPENR_IOPILPEN (1 << 8)
+#define RCC_AHB1LPENR_IOPHLPEN (1 << 7)
+#define RCC_AHB1LPENR_IOPGLPEN (1 << 6)
+#define RCC_AHB1LPENR_IOPFLPEN (1 << 5)
+#define RCC_AHB1LPENR_IOPELPEN (1 << 4)
+#define RCC_AHB1LPENR_IOPDLPEN (1 << 3)
+#define RCC_AHB1LPENR_IOPCLPEN (1 << 2)
+#define RCC_AHB1LPENR_IOPBLPEN (1 << 1)
+#define RCC_AHB1LPENR_IOPALPEN (1 << 0)
+
+/* --- RCC_AHB2LPENR values ------------------------------------------------- */
+
+#define RCC_AHB2LPENR_OTGFSLPEN (1 << 7)
+#define RCC_AHB2LPENR_RNGLPEN (1 << 6)
+#define RCC_AHB2LPENR_HASHLPEN (1 << 5)
+#define RCC_AHB2LPENR_CRYPLPEN (1 << 4)
+#define RCC_AHB2LPENR_DCMILPEN (1 << 0)
+
+/* --- RCC_AHB3LPENR values ------------------------------------------------- */
+
+#define RCC_AHB3LPENR_FSMCLPEN (1 << 0)
+
+/* --- RCC_APB1LPENR values ------------------------------------------------- */
+
+#define RCC_APB1LPENR_DACLPEN (1 << 29)
+#define RCC_APB1LPENR_PWRLPEN (1 << 28)
+#define RCC_APB1LPENR_CAN2LPEN (1 << 26)
+#define RCC_APB1LPENR_CAN1LPEN (1 << 25)
+#define RCC_APB1LPENR_I2C3LPEN (1 << 23)
+#define RCC_APB1LPENR_I2C2LPEN (1 << 22)
+#define RCC_APB1LPENR_I2C1LPEN (1 << 21)
+#define RCC_APB1LPENR_USART5LPEN (1 << 20)
+#define RCC_APB1LPENR_USART4LPEN (1 << 19)
+#define RCC_APB1LPENR_USART3LPEN (1 << 18)
+#define RCC_APB1LPENR_USART2LPEN (1 << 17)
+#define RCC_APB1LPENR_SPI3LPEN (1 << 15)
+#define RCC_APB1LPENR_SPI2LPEN (1 << 14)
+#define RCC_APB1LPENR_WWDGLPEN (1 << 11)
+#define RCC_APB1LPENR_TIM14LPEN (1 << 8)
+#define RCC_APB1LPENR_TIM13LPEN (1 << 7)
+#define RCC_APB1LPENR_TIM12LPEN (1 << 6)
+#define RCC_APB1LPENR_TIM7LPEN (1 << 5)
+#define RCC_APB1LPENR_TIM6LPEN (1 << 4)
+#define RCC_APB1LPENR_TIM5LPEN (1 << 3)
+#define RCC_APB1LPENR_TIM4LPEN (1 << 2)
+#define RCC_APB1LPENR_TIM3LPEN (1 << 1)
+#define RCC_APB1LPENR_TIM2LPEN (1 << 0)
+
+/* --- RCC_APB2LPENR values ------------------------------------------------- */
+
+#define RCC_APB2LPENR_TIM11LPEN (1 << 18)
+#define RCC_APB2LPENR_TIM10LPEN (1 << 17)
+#define RCC_APB2LPENR_TIM9LPEN (1 << 16)
+#define RCC_APB2LPENR_SYSCFGLPEN (1 << 14)
+#define RCC_APB2LPENR_SPI1LPEN (1 << 12)
+#define RCC_APB2LPENR_SDIOLPEN (1 << 11)
+#define RCC_APB2LPENR_ADC3LPEN (1 << 10)
+#define RCC_APB2LPENR_ADC2LPEN (1 << 9)
+#define RCC_APB2LPENR_ADC1LPEN (1 << 8)
+#define RCC_APB2LPENR_USART6LPEN (1 << 5)
+#define RCC_APB2LPENR_USART1LPEN (1 << 4)
+#define RCC_APB2LPENR_TIM8LPEN (1 << 1)
+#define RCC_APB2LPENR_TIM1LPEN (1 << 0)
+
+/* --- RCC_BDCR values ----------------------------------------------------- */
+
+#define RCC_BDCR_BDRST (1 << 16)
+#define RCC_BDCR_RTCEN (1 << 15)
+/* RCC_BDCR[9:8]: RTCSEL */
+#define RCC_BDCR_LSEBYP (1 << 2)
+#define RCC_BDCR_LSERDY (1 << 1)
+#define RCC_BDCR_LSEON (1 << 0)
+
+/* --- RCC_CSR values ------------------------------------------------------ */
+
+#define RCC_CSR_LPWRRSTF (1 << 31)
+#define RCC_CSR_WWDGRSTF (1 << 30)
+#define RCC_CSR_IWDGRSTF (1 << 29)
+#define RCC_CSR_SFTRSTF (1 << 28)
+#define RCC_CSR_PORRSTF (1 << 27)
+#define RCC_CSR_PINRSTF (1 << 26)
+#define RCC_CSR_BORRSTF (1 << 26)
+#define RCC_CSR_RMVF (1 << 24)
+#define RCC_CSR_LSIRDY (1 << 1)
+#define RCC_CSR_LSION (1 << 0)
+
+/* --- RCC_SSCGR values ---------------------------------------------------- */
+
+/* PLL spread spectrum clock generation documented in Datasheet. */
+
+#define RCC_SSCGR_SSCGEN (1 << 31)
+#define RCC_SSCGR_SPREADSEL (1 << 30)
+/* RCC_SSCGR[27:16]: INCSTEP */
+#define RCC_SSCGR_INCSTEP_SHIFT 16
+/* RCC_SSCGR[15:0]: MODPER */
+#define RCC_SSCGR_MODPER_SHIFT 15
+
+/* --- RCC_PLLI2SCFGR values ----------------------------------------------- */
+
+/* RCC_PLLI2SCFGR[30:28]: PLLI2SR */
+#define RCC_PLLI2SCFGR_PLLI2SR_SHIFT 28
+/* RCC_PLLI2SCFGR[14:6]: PLLI2SN */
+#define RCC_PLLI2SCFGR_PLLI2SN_SHIFT 6
+
+/* --- Variable definitions ------------------------------------------------ */
+extern u32 rcc_ppre1_frequency;
+extern u32 rcc_ppre2_frequency;
+
+/* --- Function prototypes ------------------------------------------------- */
+
+typedef enum {
+ CLOCK_3V3_120MHZ,
+ CLOCK_3V3_168MHZ,
+ CLOCK_3V3_END
+} clock_3v3_t;
+
+typedef struct {
+ uint8_t pllm;
+ uint16_t plln;
+ uint8_t pllp;
+ uint8_t pllq;
+ uint32_t flash_config;
+ uint8_t hpre;
+ uint8_t ppre1;
+ uint8_t ppre2;
+ uint8_t power_save;
+ uint32_t apb1_frequency;
+ uint32_t apb2_frequency;
+} clock_scale_t;
+
+extern const clock_scale_t hse_8mhz_3v3[CLOCK_3V3_END];
+
+typedef enum {
+ PLL, HSE, HSI, LSE, LSI
+} osc_t;
+
+void rcc_osc_ready_int_clear(osc_t osc);
+void rcc_osc_ready_int_enable(osc_t osc);
+void rcc_osc_ready_int_disable(osc_t osc);
+int rcc_osc_ready_int_flag(osc_t osc);
+void rcc_css_int_clear(void);
+int rcc_css_int_flag(void);
+void rcc_wait_for_osc_ready(osc_t osc);
+void rcc_wait_for_sysclk_status(osc_t osc);
+void rcc_osc_on(osc_t osc);
+void rcc_osc_off(osc_t osc);
+void rcc_css_enable(void);
+void rcc_css_disable(void);
+void rcc_osc_bypass_enable(osc_t osc);
+void rcc_osc_bypass_disable(osc_t osc);
+void rcc_peripheral_enable_clock(volatile u32 *reg, u32 en);
+void rcc_peripheral_disable_clock(volatile u32 *reg, u32 en);
+void rcc_peripheral_reset(volatile u32 *reg, u32 reset);
+void rcc_peripheral_clear_reset(volatile u32 *reg, u32 clear_reset);
+void rcc_set_sysclk_source(u32 clk);
+void rcc_set_pll_source(u32 pllsrc);
+void rcc_set_ppre2(u32 ppre2);
+void rcc_set_ppre1(u32 ppre1);
+void rcc_set_hpre(u32 hpre);
+void rcc_set_rtcpre(u32 rtcpre);
+void rcc_set_main_pll_hsi(u32 pllm, u32 plln, u32 pllp, u32 pllq);
+void rcc_set_main_pll_hse(u32 pllm, u32 plln, u32 pllp, u32 pllq);
+u32 rcc_get_system_clock_source(int i);
+void rcc_clock_setup_hse_3v3(const clock_scale_t *clock);
+void rcc_backupdomain_reset(void);
+
+#endif