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nuttx/boards/arm/stm32/nucleo-f4x1re/include/nucleo-f401re.h

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/****************************************************************************
* boards/arm/stm32/nucleo-f4x1re/include/nucleo-f401re.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_STM32_NUCLEO_F401RE_INCLUDE_NUCLEO_F401RE_H
#define __BOARDS_ARM_STM32_NUCLEO_F401RE_INCLUDE_NUCLEO_F401RE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
/* The NUCLEO401RE supports both HSE and LSE crystals (X2 and X3).
* However, as shipped, the X2 and X3 crystals are not populated.
* Therefore the Nucleo-F401RE will need to run off the 16MHz HSI clock.
*
* System Clock source : PLL (HSI)
* SYSCLK(Hz) : 84000000 Determined by PLL
* configuration
* HCLK(Hz) : 84000000 (STM32_RCC_CFGR_HPRE)
* AHB Prescaler : 1 (STM32_RCC_CFGR_HPRE)
* APB1 Prescaler : 2 (STM32_RCC_CFGR_PPRE1)
* APB2 Prescaler : 1 (STM32_RCC_CFGR_PPRE2)
* HSI Frequency(Hz) : 16000000 (nominal)
* PLLM : 16 (STM32_PLLCFG_PLLM)
* PLLN : 336 (STM32_PLLCFG_PLLN)
* PLLP : 4 (STM32_PLLCFG_PLLP)
* PLLQ : 7 (STM32_PLLCFG_PPQ)
* Flash Latency(WS) : 5
* Prefetch Buffer : OFF
* Instruction cache : ON
* Data cache : ON
* Require 48MHz for USB OTG FS, : Enabled
* SDIO and RNG clock
*/
/* HSI - 16 MHz RC factory-trimmed
* LSI - 32 KHz RC
* HSE - not installed
* LSE - not installed
*/
#define STM32_HSI_FREQUENCY 16000000ul
#define STM32_LSI_FREQUENCY 32000
#define STM32_BOARD_USEHSI 1
/* Main PLL Configuration.
*
* Formulae:
*
* VCO input frequency = PLL input clock frequency / PLLM,
* 2 <= PLLM <= 63
* VCO output frequency = VCO input frequency × PLLN,
* 192 <= PLLN <= 432
* PLL output clock frequency = VCO frequency / PLLP,
* PLLP = 2, 4, 6, or 8
* USB OTG FS clock frequency = VCO frequency / PLLQ,
* 2 <= PLLQ <= 15
*
* We would like to have SYSYCLK=84MHz and we must have the USB clock= 48MHz.
* Some possible solutions include:
*
* PLLN=210 PLLM=5 PLLP=8 PLLQ=14 SYSCLK=84000000 OTGFS=48000000
* PLLN=210 PLLM=10 PLLP=4 PLLQ=7 SYSCLK=84000000 OTGFS=48000000
* PLLN=336 PLLM=8 PLLP=8 PLLQ=14 SYSCLK=84000000 OTGFS=48000000
* PLLN=336 PLLM=16 PLLP=4 PLLQ=7 SYSCLK=84000000 OTGFS=48000000
* PLLN=420 PLLM=10 PLLP=8 PLLQ=14 SYSCLK=84000000 OTGFS=48000000
* PLLN=420 PLLM=20 PLLP=4 PLLQ=7 SYSCLK=84000000 OTGFS=48000000
*
* We will configure like this
*
* PLL source is HSI
* PLL_VCO = (STM32_HSI_FREQUENCY / PLLM) * PLLN
* = (16,000,000 / 16) * 336
* = 336,000,000
* SYSCLK = PLL_VCO / PLLP
* = 336,000,000 / 4 = 84,000,000
* USB OTG FS and SDIO Clock
* = PLL_VCO / PLLQ
* = 336,000,000 / 7 = 48,000,000
*
* REVISIT: Trimming of the HSI is not yet supported.
*/
#define STM32_PLLCFG_PLLM RCC_PLLCFG_PLLM(16)
#define STM32_PLLCFG_PLLN RCC_PLLCFG_PLLN(336)
#define STM32_PLLCFG_PLLP RCC_PLLCFG_PLLP_4
#define STM32_PLLCFG_PLLQ RCC_PLLCFG_PLLQ(7)
#define STM32_SYSCLK_FREQUENCY 84000000ul
/* AHB clock (HCLK) is SYSCLK (84MHz) */
#define STM32_RCC_CFGR_HPRE RCC_CFGR_HPRE_SYSCLK /* HCLK = SYSCLK / 1 */
#define STM32_HCLK_FREQUENCY STM32_SYSCLK_FREQUENCY
/* APB1 clock (PCLK1) is HCLK/2 (42MHz) */
#define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd2 /* PCLK1 = HCLK / 2 */
#define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/2)
/* Timers driven from APB1 will be twice PCLK1 */
/* REVISIT */
#define STM32_APB1_TIM2_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM3_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM4_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM5_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM6_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM7_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM12_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM13_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM14_CLKIN (2*STM32_PCLK1_FREQUENCY)
/* APB2 clock (PCLK2) is HCLK (84MHz) */
#define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLK /* PCLK2 = HCLK / 1 */
#define STM32_PCLK2_FREQUENCY (STM32_HCLK_FREQUENCY/1)
/* Timers driven from APB2 will be twice PCLK2 */
/* REVISIT */
#define STM32_APB2_TIM1_CLKIN (2*STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM8_CLKIN (2*STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM9_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB2_TIM10_CLKIN (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB2_TIM11_CLKIN (2*STM32_PCLK1_FREQUENCY)
/* Timer Frequencies, if APBx is set to 1, frequency is same to APBx
* otherwise frequency is 2xAPBx.
* Note: TIM1,8 are on APB2, others on APB1
*/
/* REVISIT */
#define BOARD_TIM1_FREQUENCY (2*STM32_PCLK2_FREQUENCY)
#define BOARD_TIM2_FREQUENCY (2*STM32_PCLK1_FREQUENCY)
#define BOARD_TIM3_FREQUENCY (2*STM32_PCLK1_FREQUENCY)
#define BOARD_TIM4_FREQUENCY (2*STM32_PCLK1_FREQUENCY)
#define BOARD_TIM5_FREQUENCY (2*STM32_PCLK1_FREQUENCY)
#define BOARD_TIM6_FREQUENCY (2*STM32_PCLK1_FREQUENCY)
#define BOARD_TIM7_FREQUENCY (2*STM32_PCLK1_FREQUENCY)
#define BOARD_TIM8_FREQUENCY (2*STM32_PCLK2_FREQUENCY)
/* SDIO dividers. Note that slower clocking is required when DMA is disabled
* in order to avoid RX overrun/TX underrun errors due to delayed responses
* to service FIFOs in interrupt driven mode. These values have not been
* tuned!!!
*
* HCLK=72MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(178+2)=400 KHz
*/
/* REVISIT */
#define SDIO_INIT_CLKDIV (178 << SDIO_CLKCR_CLKDIV_SHIFT)
/* DMA ON: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(2+2)=18 MHz
* DMA OFF: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(3+2)=14.4 MHz
*/
/* REVISIT */
#ifdef CONFIG_SDIO_DMA
# define SDIO_MMCXFR_CLKDIV (2 << SDIO_CLKCR_CLKDIV_SHIFT)
#else
# define SDIO_MMCXFR_CLKDIV (3 << SDIO_CLKCR_CLKDIV_SHIFT)
#endif
/* DMA ON: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(1+2)=24 MHz
* DMA OFF: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(3+2)=14.4 MHz
*/
/* REVISIT */
#ifdef CONFIG_SDIO_DMA
# define SDIO_SDXFR_CLKDIV (1 << SDIO_CLKCR_CLKDIV_SHIFT)
#else
# define SDIO_SDXFR_CLKDIV (3 << SDIO_CLKCR_CLKDIV_SHIFT)
#endif
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_STM32_NUCLEO_F401RE_INCLUDE_NUCLEO_F401RE_H */
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