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stm32: Initial support for stm32f2 (#3001) 

Initial support for stm32f2 in general and STM32F207 in particular.

Boots up and communicates on STM32F207VC.

Signed-off-by: Boleslaw Ciesielski <combolek@users.noreply.github.com>
This commit is contained in:
combolek 2020-06-23 07:52:15 -07:00 committed by GitHub
parent a4c31bafb0
commit 7cab732ae9
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GPG Key ID: 4AEE18F83AFDEB23
12 changed files with 58653 additions and 6 deletions
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4
lib/README
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@ -46,6 +46,10 @@ The stm32f1 directory contains code from STMicroelectronics:
http://www.st.com/en/embedded-software/stm32cubef1.html
version 1.8.0 (extracted 20190721).
The stm32f2 directory contains code from STMicroelectronics:
https://www.st.com/content/st_com/en/products/embedded-software/mcu-mpu-embedded-software/stm32-embedded-software/stm32cube-mcu-mpu-packages/stm32cubef2.html
version 1.9.0 (extracted 20200614).
The stm32f4 directory contains code from STMicroelectronics:
http://www.st.com/en/embedded-software/stm32cubef4.html
version 1.24.0 (extracted 20190723).

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lib/stm32f2/include/stm32f2xx.h Normal file
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/**
******************************************************************************
* @file stm32f2xx.h
* @author MCD Application Team
* @brief CMSIS STM32F2xx Device Peripheral Access Layer Header File.
*
* The file is the unique include file that the application programmer
* is using in the C source code, usually in main.c. This file contains:
* - Configuration section that allows to select:
* - The STM32F2xx device used in the target application
* - To use or not the peripheral’s drivers in application code(i.e.
* code will be based on direct access to peripheral’s registers
* rather than drivers API), this option is controlled by
* "#define USE_HAL_DRIVER"
*
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32f2xx
* @{
*/
#ifndef __STM32F2xx_H
#define __STM32F2xx_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/** @addtogroup Library_configuration_section
* @{
*/
/**
* @brief STM32 Family
*/
#if !defined (STM32F2)
#define STM32F2
#endif /* STM32F2 */
/* Uncomment the line below according to the target STM32 device used in your
application
*/
#if !defined (STM32F205xx) && !defined (STM32F215xx) && !defined (STM32F207xx) && !defined (STM32F217xx)
/* #define STM32F205xx */ /*!< STM32F205RG, STM32F205VG, STM32F205ZG, STM32F205RF, STM32F205VF, STM32F205ZF,
STM32F205RE, STM32F205VE, STM32F205ZE, STM32F205RC, STM32F205VC, STM32F205ZC,
STM32F205RB and STM32F205VB Devices */
/* #define STM32F215xx */ /*!< STM32F215RG, STM32F215VG, STM32F215ZG, STM32F215RE, STM32F215VE and STM32F215ZE Devices */
/* #define STM32F207xx */ /*!< STM32F207VG, STM32F207ZG, STM32F207IG, STM32F207VF, STM32F207ZF, STM32F207IF,
STM32F207VE, STM32F207ZE, STM32F207IE, STM32F207VC, STM32F207ZC and STM32F207IC Devices */
/* #define STM32F217xx */ /*!< STM32F217VG, STM32F217ZG, STM32F217IG, STM32F217VE, STM32F217ZE and STM32F217IE Devices */
#endif
/* Tip: To avoid modifying this file each time you need to switch between these
devices, you can define the device in your toolchain compiler preprocessor.
*/
#if !defined (USE_HAL_DRIVER)
/**
* @brief Comment the line below if you will not use the peripherals drivers.
In this case, these drivers will not be included and the application code will
be based on direct access to peripherals registers
*/
/*#define USE_HAL_DRIVER */
#endif /* USE_HAL_DRIVER */
/**
* @brief CMSIS Device version number V2.2.3
*/
#define __STM32F2xx_CMSIS_VERSION_MAIN (0x02U) /*!< [31:24] main version */
#define __STM32F2xx_CMSIS_VERSION_SUB1 (0x02U) /*!< [23:16] sub1 version */
#define __STM32F2xx_CMSIS_VERSION_SUB2 (0x03U) /*!< [15:8] sub2 version */
#define __STM32F2xx_CMSIS_VERSION_RC (0x00U) /*!< [7:0] release candidate */
#define __STM32F2xx_CMSIS_VERSION ((__STM32F2xx_CMSIS_VERSION_MAIN << 24)\
|(__STM32F2xx_CMSIS_VERSION_SUB1 << 16)\
|(__STM32F2xx_CMSIS_VERSION_SUB2 << 8 )\
|(__STM32F2xx_CMSIS_VERSION))
/**
* @}
*/
/** @addtogroup Device_Included
* @{
*/
#if defined(STM32F205xx)
#include "stm32f205xx.h"
#elif defined(STM32F215xx)
#include "stm32f215xx.h"
#elif defined(STM32F207xx)
#include "stm32f207xx.h"
#elif defined(STM32F217xx)
#include "stm32f217xx.h"
#else
#error "Please select first the target STM32F2xx device used in your application (in stm32f2xx.h file)"
#endif
/**
* @}
*/
/** @addtogroup Exported_types
* @{
*/
typedef enum
{
RESET = 0U,
SET = !RESET
} FlagStatus, ITStatus;
typedef enum
{
DISABLE = 0U,
ENABLE = !DISABLE
} FunctionalState;
#define IS_FUNCTIONAL_STATE(STATE) (((STATE) == DISABLE) || ((STATE) == ENABLE))
typedef enum
{
SUCCESS = 0U,
ERROR = !SUCCESS
} ErrorStatus;
/**
* @}
*/
/** @addtogroup Exported_macro
* @{
*/
#define SET_BIT(REG, BIT) ((REG) |= (BIT))
#define CLEAR_BIT(REG, BIT) ((REG) &= ~(BIT))
#define READ_BIT(REG, BIT) ((REG) & (BIT))
#define CLEAR_REG(REG) ((REG) = (0x0))
#define WRITE_REG(REG, VAL) ((REG) = (VAL))
#define READ_REG(REG) ((REG))
#define MODIFY_REG(REG, CLEARMASK, SETMASK) WRITE_REG((REG), (((READ_REG(REG)) & (~(CLEARMASK))) | (SETMASK)))
#define POSITION_VAL(VAL) (__CLZ(__RBIT(VAL)))
/**
* @}
*/
#if defined (USE_HAL_DRIVER)
#include "stm32f2xx_hal.h"
#endif /* USE_HAL_DRIVER */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __STM32F2xx_H */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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lib/stm32f2/include/system_stm32f2xx.h Normal file
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/**
******************************************************************************
* @file system_stm32f2xx.h
* @author MCD Application Team
* @brief CMSIS Cortex-M3 Device System Source File for STM32F2xx devices.
****************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32f2xx_system
* @{
*/
/**
* @brief Define to prevent recursive inclusion
*/
#ifndef __SYSTEM_STM32F2XX_H
#define __SYSTEM_STM32F2XX_H
#ifdef __cplusplus
extern "C" {
#endif
/** @addtogroup STM32F2xx_System_Includes
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Exported_types
* @{
*/
/* This variable is updated in three ways:
1) by calling CMSIS function SystemCoreClockUpdate()
2) by calling HAL API function HAL_RCC_GetSysClockFreq()
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
Note: If you use this function to configure the system clock; then there
is no need to call the 2 first functions listed above, since SystemCoreClock
variable is updated automatically.
*/
extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
extern const uint8_t AHBPrescTable[16]; /*!< AHB prescalers table values */
extern const uint8_t APBPrescTable[8]; /*!< APB prescalers table values */
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Exported_Constants
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Exported_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Exported_Functions
* @{
*/
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /*__SYSTEM_STM32F2XX_H */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file system_stm32f2xx.c
* @author MCD Application Team
* @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
*
* This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32f2xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32f2xx_system
* @{
*/
/** @addtogroup STM32F2xx_System_Private_Includes
* @{
*/
#include "stm32f2xx.h"
#if !defined (HSE_VALUE)
#define HSE_VALUE ((uint32_t)25000000) /*!< Default value of the External oscillator in Hz */
#endif /* HSE_VALUE */
#if !defined (HSI_VALUE)
#define HSI_VALUE ((uint32_t)16000000) /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Private_Defines
* @{
*/
/************************* Miscellaneous Configuration ************************/
/*!< Uncomment the following line if you need to use external SRAM mounted
on STM322xG_EVAL board as data memory */
/* #define DATA_IN_ExtSRAM */
/*!< Uncomment the following line if you need to relocate your vector Table in
Internal SRAM. */
/* #define VECT_TAB_SRAM */
#define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
/******************************************************************************/
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Private_Variables
* @{
*/
/* This variable can be updated in Three ways :
1) by calling CMSIS function SystemCoreClockUpdate()
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
Note: If you use this function to configure the system clock; then there
is no need to call the 2 first functions listed above, since SystemCoreClock
variable is updated automatically.
*/
uint32_t SystemCoreClock = 16000000;
const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Private_FunctionPrototypes
* @{
*/
#ifdef DATA_IN_ExtSRAM
static void SystemInit_ExtMemCtl(void);
#endif /* DATA_IN_ExtSRAM */
/**
* @}
*/
/** @addtogroup STM32F2xx_System_Private_Functions
* @{
*/
/**
* @brief Setup the microcontroller system
* Initialize the Embedded Flash Interface, the PLL and update the
* SystemFrequency variable.
* @param None
* @retval None
*/
void SystemInit(void)
{
/* Reset the RCC clock configuration to the default reset state ------------*/
/* Set HSION bit */
RCC->CR |= (uint32_t)0x00000001;
/* Reset CFGR register */
RCC->CFGR = 0x00000000;
/* Reset HSEON, CSSON and PLLON bits */
RCC->CR &= (uint32_t)0xFEF6FFFF;
/* Reset PLLCFGR register */
RCC->PLLCFGR = 0x24003010;
/* Reset HSEBYP bit */
RCC->CR &= (uint32_t)0xFFFBFFFF;
/* Disable all interrupts */
RCC->CIR = 0x00000000;
#ifdef DATA_IN_ExtSRAM
SystemInit_ExtMemCtl();
#endif /* DATA_IN_ExtSRAM */
/* Configure the Vector Table location add offset address ------------------*/
#ifdef VECT_TAB_SRAM
SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
#else
SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
#endif
}
/**
* @brief Update SystemCoreClock variable according to Clock Register Values.
* The SystemCoreClock variable contains the core clock (HCLK), it can
* be used by the user application to setup the SysTick timer or configure
* other parameters.
*
* @note Each time the core clock (HCLK) changes, this function must be called
* to update SystemCoreClock variable value. Otherwise, any configuration
* based on this variable will be incorrect.
*
* @note - The system frequency computed by this function is not the real
* frequency in the chip. It is calculated based on the predefined
* constant and the selected clock source:
*
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
*
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
*
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
* or HSI_VALUE(*) multiplied/divided by the PLL factors.
*
* (*) HSI_VALUE is a constant defined in stm32f2xx_hal_conf.h file (default value
* 16 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (**) HSE_VALUE is a constant defined in stm32f2xx_hal_conf.h file (its value
* depends on the application requirements), user has to ensure that HSE_VALUE
* is same as the real frequency of the crystal used. Otherwise, this function
* may have wrong result.
*
* - The result of this function could be not correct when using fractional
* value for HSE crystal.
*
* @param None
* @retval None
*/
void SystemCoreClockUpdate(void)
{
uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
/* Get SYSCLK source -------------------------------------------------------*/
tmp = RCC->CFGR & RCC_CFGR_SWS;
switch (tmp)
{
case 0x00: /* HSI used as system clock source */
SystemCoreClock = HSI_VALUE;
break;
case 0x04: /* HSE used as system clock source */
SystemCoreClock = HSE_VALUE;
break;
case 0x08: /* PLL used as system clock source */
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
SYSCLK = PLL_VCO / PLL_P
*/
pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
if (pllsource != 0)
{
/* HSE used as PLL clock source */
pllvco = (HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
}
else
{
/* HSI used as PLL clock source */
pllvco = (HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
}
pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2;
SystemCoreClock = pllvco/pllp;
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
/* Compute HCLK frequency --------------------------------------------------*/
/* Get HCLK prescaler */
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
/* HCLK frequency */
SystemCoreClock >>= tmp;
}
#ifdef DATA_IN_ExtSRAM
/**
* @brief Setup the external memory controller.
* Called in startup_stm32f2xx.s before jump to main.
* This function configures the external SRAM mounted on STM322xG_EVAL board
* This SRAM will be used as program data memory (including heap and stack).
* @param None
* @retval None
*/
void SystemInit_ExtMemCtl(void)
{
__IO uint32_t tmp = 0x00;
/*-- GPIOs Configuration -----------------------------------------------------*/
/* Enable GPIOD, GPIOE, GPIOF and GPIOG interface clock */
RCC->AHB1ENR |= 0x00000078;
/* Delay after an RCC peripheral clock enabling */
tmp = READ_BIT(RCC->AHB1ENR, RCC_AHB1ENR_GPIODEN);
(void)(tmp);
/* Connect PDx pins to FSMC Alternate function */
GPIOD->AFR[0] = 0x00CCC0CC;
GPIOD->AFR[1] = 0xCCCCCCCC;
/* Configure PDx pins in Alternate function mode */
GPIOD->MODER = 0xAAAA0A8A;
/* Configure PDx pins speed to 100 MHz */
GPIOD->OSPEEDR = 0xFFFF0FCF;
/* Configure PDx pins Output type to push-pull */
GPIOD->OTYPER = 0x00000000;
/* No pull-up, pull-down for PDx pins */
GPIOD->PUPDR = 0x00000000;
/* Connect PEx pins to FSMC Alternate function */
GPIOE->AFR[0] = 0xC00CC0CC;
GPIOE->AFR[1] = 0xCCCCCCCC;
/* Configure PEx pins in Alternate function mode */
GPIOE->MODER = 0xAAAA828A;
/* Configure PEx pins speed to 100 MHz */
GPIOE->OSPEEDR = 0xFFFFC3CF;
/* Configure PEx pins Output type to push-pull */
GPIOE->OTYPER = 0x00000000;
/* No pull-up, pull-down for PEx pins */
GPIOE->PUPDR = 0x00000000;
/* Connect PFx pins to FSMC Alternate function */
GPIOF->AFR[0] = 0x00CCCCCC;
GPIOF->AFR[1] = 0xCCCC0000;
/* Configure PFx pins in Alternate function mode */
GPIOF->MODER = 0xAA000AAA;
/* Configure PFx pins speed to 100 MHz */
GPIOF->OSPEEDR = 0xFF000FFF;
/* Configure PFx pins Output type to push-pull */
GPIOF->OTYPER = 0x00000000;
/* No pull-up, pull-down for PFx pins */
GPIOF->PUPDR = 0x00000000;
/* Connect PGx pins to FSMC Alternate function */
GPIOG->AFR[0] = 0x00CCCCCC;
GPIOG->AFR[1] = 0x000000C0;
/* Configure PGx pins in Alternate function mode */
GPIOG->MODER = 0x00085AAA;
/* Configure PGx pins speed to 100 MHz */
GPIOG->OSPEEDR = 0x000CAFFF;
/* Configure PGx pins Output type to push-pull */
GPIOG->OTYPER = 0x00000000;
/* No pull-up, pull-down for PGx pins */
GPIOG->PUPDR = 0x00000000;
/*--FSMC Configuration -------------------------------------------------------*/
/* Enable the FSMC interface clock */
RCC->AHB3ENR |= 0x00000001;
/* Configure and enable Bank1_SRAM2 */
FSMC_Bank1->BTCR[2] = 0x00001011;
FSMC_Bank1->BTCR[3] = 0x00000201;
FSMC_Bank1E->BWTR[2] = 0x0FFFFFFF;
}
#endif /* DATA_IN_ExtSRAM */
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

17
src/stm32/Kconfig
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@ -22,6 +22,9 @@ choice
config MACH_STM32F103
bool "STM32F103"
select MACH_STM32F1
config MACH_STM32F207
bool "STM32F207"
select MACH_STM32F2
config MACH_STM32F405
bool "STM32F405"
select MACH_STM32F4
@ -43,6 +46,8 @@ config MACH_STM32F0
bool
config MACH_STM32F1
bool
config MACH_STM32F2
bool
config MACH_STM32F4
bool
config HAVE_STM32_USBFS
@ -51,7 +56,7 @@ config HAVE_STM32_USBFS
default n
config HAVE_STM32_USBOTG
bool
default y if MACH_STM32F4
default y if MACH_STM32F2 || MACH_STM32F4
default n
config MCU
@ -59,6 +64,7 @@ config MCU
default "stm32f042x6" if MACH_STM32F042
default "stm32f070xb" if MACH_STM32F070
default "stm32f103xe" if MACH_STM32F103
default "stm32f207xx" if MACH_STM32F207
default "stm32f405xx" if MACH_STM32F405
default "stm32f407xx" if MACH_STM32F407
default "stm32f446xx" if MACH_STM32F446
@ -68,6 +74,7 @@ config CLOCK_FREQ
default 48000000 if MACH_STM32F0
default 64000000 if MACH_STM32F103 && STM32_CLOCK_REF_INTERNAL
default 72000000 if MACH_STM32F103
default 120000000 if MACH_STM32F207
default 168000000 if MACH_STM32F405 || MACH_STM32F407
default 180000000 if MACH_STM32F446
@ -76,6 +83,7 @@ config FLASH_SIZE
default 0x8000 if MACH_STM32F042
default 0x20000 if MACH_STM32F070
default 0x10000 if MACH_STM32F103 # Flash size of stm32f103x8 (64KiB)
default 0x40000 if MACH_STM32F2
default 0x80000 if MACH_STM32F4
config RAM_START
@ -87,6 +95,7 @@ config RAM_SIZE
default 0x1800 if MACH_STM32F042
default 0x4000 if MACH_STM32F070
default 0x5000 if MACH_STM32F103 # Ram size of stm32f103x8 (20KiB)
default 0x20000 if MACH_STM32F207
default 0x20000 if MACH_STM32F4
config STACK_SIZE
@ -94,19 +103,19 @@ config STACK_SIZE
default 512
choice
prompt "Bootloader offset" if MACH_STM32F407 || MACH_STM32F405 || MACH_STM32F103 || MACH_STM32F070
prompt "Bootloader offset" if MACH_STM32F207 || MACH_STM32F407 || MACH_STM32F405 || MACH_STM32F103 || MACH_STM32F070
config STM32_FLASH_START_800
bool "2KiB bootloader (HID Bootloader)" if MACH_STM32F103
config STM32_FLASH_START_2000
bool "8KiB bootloader (stm32duino)" if MACH_STM32F103 || MACH_STM32F070
config STM32_FLASH_START_4000
bool "16KiB bootloader (HID Bootloader)" if MACH_STM32F405 || MACH_STM32F407
bool "16KiB bootloader (HID Bootloader)" if MACH_STM32F207 || MACH_STM32F405 || MACH_STM32F407
config STM32_FLASH_START_5000
bool "20KiB bootloader" if MACH_STM32F103
config STM32_FLASH_START_7000
bool "28KiB bootloader" if MACH_STM32F103
config STM32_FLASH_START_8000
bool "32KiB bootloader (SKR-PRO)" if MACH_STM32F407
bool "32KiB bootloader (SKR-PRO or TFT35-V3.0)" if MACH_STM32F207 || MACH_STM32F407
config STM32_FLASH_START_10000
bool "64KiB bootloader (Alfawise)" if MACH_STM32F103
config STM32_FLASH_START_0000

5
src/stm32/Makefile
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@ -6,6 +6,7 @@ CROSS_PREFIX=arm-none-eabi-
dirs-y += src/stm32 src/generic
dirs-$(CONFIG_MACH_STM32F0) += lib/stm32f0
dirs-$(CONFIG_MACH_STM32F1) += lib/stm32f1
dirs-$(CONFIG_MACH_STM32F2) += lib/stm32f2
dirs-$(CONFIG_MACH_STM32F4) += lib/stm32f4
MCU := $(shell echo $(CONFIG_MCU))
@ -13,6 +14,7 @@ MCU_UPPER := $(shell echo $(CONFIG_MCU) | tr a-z A-Z | tr X x)
CFLAGS-$(CONFIG_MACH_STM32F0) += -mcpu=cortex-m0 -Ilib/stm32f0/include
CFLAGS-$(CONFIG_MACH_STM32F1) += -mcpu=cortex-m3 -Ilib/stm32f1/include
CFLAGS-$(CONFIG_MACH_STM32F2) += -mcpu=cortex-m3 -Ilib/stm32f2/include
CFLAGS-$(CONFIG_MACH_STM32F4) += -mcpu=cortex-m4 -Ilib/stm32f4/include
CFLAGS-$(CONFIG_MACH_STM32F4) += -mfpu=fpv4-sp-d16 -mfloat-abi=hard
CFLAGS += $(CFLAGS-y) -D$(MCU_UPPER) -mthumb -Ilib/cmsis-core
@ -31,6 +33,9 @@ src-$(CONFIG_MACH_STM32F0) += stm32/stm32f0_i2c.c
src-$(CONFIG_MACH_STM32F1) += ../lib/stm32f1/system_stm32f1xx.c
src-$(CONFIG_MACH_STM32F1) += stm32/stm32f1.c generic/armcm_timer.c
src-$(CONFIG_MACH_STM32F1) += stm32/adc.c stm32/i2c.c
src-$(CONFIG_MACH_STM32F2) += ../lib/stm32f2/system_stm32f2xx.c
src-$(CONFIG_MACH_STM32F2) += stm32/stm32f4.c generic/armcm_timer.c
src-$(CONFIG_MACH_STM32F2) += stm32/adc.c stm32/i2c.c
src-$(CONFIG_MACH_STM32F4) += ../lib/stm32f4/system_stm32f4xx.c
src-$(CONFIG_MACH_STM32F4) += stm32/stm32f4.c generic/armcm_timer.c
src-$(CONFIG_MACH_STM32F4) += stm32/adc.c stm32/i2c.c

2
src/stm32/internal.h
View File

@ -8,6 +8,8 @@
#include "stm32f0xx.h"
#elif CONFIG_MACH_STM32F1
#include "stm32f1xx.h"
#elif CONFIG_MACH_STM32F2
#include "stm32f2xx.h"
#elif CONFIG_MACH_STM32F4
#include "stm32f4xx.h"
#endif

28
src/stm32/stm32f4.c
View File

@ -1,4 +1,4 @@
// Code to setup clocks and gpio on stm32f4
// Code to setup clocks and gpio on stm32f2/stm32f4
//
// Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net>
//
@ -118,6 +118,28 @@ DECL_CONSTANT_STR("RESERVE_PINS_crystal", "PH0,PH1");
#endif
// Clock configuration
static void
enable_clock_stm32f20x(void)
{
#if CONFIG_MACH_STM32F207
uint32_t pll_base = 1000000, pll_freq = CONFIG_CLOCK_FREQ * 2, pllcfgr;
if (!CONFIG_STM32_CLOCK_REF_INTERNAL) {
// Configure 120Mhz PLL from external crystal (HSE)
uint32_t div = CONFIG_CLOCK_REF_FREQ / pll_base;
RCC->CR |= RCC_CR_HSEON;
pllcfgr = RCC_PLLCFGR_PLLSRC_HSE | (div << RCC_PLLCFGR_PLLM_Pos);
} else {
// Configure 120Mhz PLL from internal 16Mhz oscillator (HSI)
uint32_t div = 16000000 / pll_base;
pllcfgr = RCC_PLLCFGR_PLLSRC_HSI | (div << RCC_PLLCFGR_PLLM_Pos);
}
RCC->PLLCFGR = (pllcfgr | ((pll_freq/pll_base) << RCC_PLLCFGR_PLLN_Pos)
| (0 << RCC_PLLCFGR_PLLP_Pos)
| ((pll_freq/FREQ_USB) << RCC_PLLCFGR_PLLQ_Pos));
RCC->CR |= RCC_CR_PLLON;
#endif
}
static void
enable_clock_stm32f40x(void)
{
@ -194,7 +216,9 @@ static void
clock_setup(void)
{
// Configure and enable PLL
if (CONFIG_MACH_STM32F405 || CONFIG_MACH_STM32F407)
if (CONFIG_MACH_STM32F207)
enable_clock_stm32f20x();
else if (CONFIG_MACH_STM32F405 || CONFIG_MACH_STM32F407)
enable_clock_stm32f40x();
else
enable_clock_stm32f446();