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authorjaseg <git@jaseg.net>2019-03-04 23:16:42 +0900
committerjaseg <git@jaseg.net>2019-03-04 23:16:42 +0900
commitd48b92b93507f46ba2623284d8a0841e22e9a09b (patch)
tree902491412a82f8e1d0ddf0fcdcf65bd33477414e /driver_fw/system_stm32f1xx.c
parentca0439cb8ea63e2e1fbd19873b1540b177e31df7 (diff)
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driver/fw: Beginnings of a firmware
This code starts up and blinks a led. This means RCC, GPIO and SPI1 are working.
Diffstat (limited to 'driver_fw/system_stm32f1xx.c')
-rw-r--r--driver_fw/system_stm32f1xx.c438
1 files changed, 0 insertions, 438 deletions
diff --git a/driver_fw/system_stm32f1xx.c b/driver_fw/system_stm32f1xx.c
deleted file mode 100644
index ff7aa57..0000000
--- a/driver_fw/system_stm32f1xx.c
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@@ -1,438 +0,0 @@
-/**
- ******************************************************************************
- * @file system_stm32f1xx.c
- * @author MCD Application Team
- * @version V1.5.0
- * @date 14-April-2017
- * @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
- *
- * 1. This file provides two functions and one global variable to be called from
- * user application:
- * - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
- * factors, AHB/APBx prescalers and Flash settings).
- * This function is called at startup just after reset and
- * before branch to main program. This call is made inside
- * the "startup_stm32f1xx_xx.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.
- *
- * 2. After each device reset the HSI (8 MHz) is used as system clock source.
- * Then SystemInit() function is called, in "startup_stm32f1xx_xx.s" file, to
- * configure the system clock before to branch to main program.
- *
- * 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depending on
- * the product used), refer to "HSE_VALUE".
- * When HSE is used as system clock source, directly or through PLL, and you
- * are using different crystal you have to adapt the HSE value to your own
- * configuration.
- *
- ******************************************************************************
- * @attention
- *
- * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of STMicroelectronics nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- ******************************************************************************
- */
-
-/** @addtogroup CMSIS
- * @{
- */
-
-/** @addtogroup stm32f1xx_system
- * @{
- */
-
-/** @addtogroup STM32F1xx_System_Private_Includes
- * @{
- */
-
-#include "stm32f1xx.h"
-
-/**
- * @}
- */
-
-/** @addtogroup STM32F1xx_System_Private_TypesDefinitions
- * @{
- */
-
-/**
- * @}
- */
-
-/** @addtogroup STM32F1xx_System_Private_Defines
- * @{
- */
-
-#if !defined (HSE_VALUE)
- #define HSE_VALUE ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz.
- This value can be provided and adapted by the user application. */
-#endif /* HSE_VALUE */
-
-#if !defined (HSI_VALUE)
- #define HSI_VALUE ((uint32_t)8000000) /*!< Default value of the Internal oscillator in Hz.
- This value can be provided and adapted by the user application. */
-#endif /* HSI_VALUE */
-
-/*!< Uncomment the following line if you need to use external SRAM */
-#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
-/* #define DATA_IN_ExtSRAM */
-#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
-
-/*!< Uncomment the following line if you need to relocate your vector Table in
- Internal SRAM. */
-/* #define VECT_TAB_SRAM */
-#define VECT_TAB_OFFSET 0x0 /*!< Vector Table base offset field.
- This value must be a multiple of 0x200. */
-
-
-/**
- * @}
- */
-
-/** @addtogroup STM32F1xx_System_Private_Macros
- * @{
- */
-
-/**
- * @}
- */
-
-/** @addtogroup STM32F1xx_System_Private_Variables
- * @{
- */
-
-/*******************************************************************************
-* Clock Definitions
-*******************************************************************************/
-#if defined(STM32F100xB) ||defined(STM32F100xE)
- uint32_t SystemCoreClock = 24000000; /*!< System Clock Frequency (Core Clock) */
-#else /*!< HSI Selected as System Clock source */
- uint32_t SystemCoreClock = 72000000; /*!< System Clock Frequency (Core Clock) */
-#endif
-
-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 STM32F1xx_System_Private_FunctionPrototypes
- * @{
- */
-
-#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
-#ifdef DATA_IN_ExtSRAM
- static void SystemInit_ExtMemCtl(void);
-#endif /* DATA_IN_ExtSRAM */
-#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
-
-/**
- * @}
- */
-
-/** @addtogroup STM32F1xx_System_Private_Functions
- * @{
- */
-
-/**
- * @brief Setup the microcontroller system
- * Initialize the Embedded Flash Interface, the PLL and update the
- * SystemCoreClock variable.
- * @note This function should be used only after reset.
- * @param None
- * @retval None
- */
-void SystemInit (void)
-{
- /* Reset the RCC clock configuration to the default reset state(for debug purpose) */
- /* Set HSION bit */
- RCC->CR |= (uint32_t)0x00000001;
-
- /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
-#if !defined(STM32F105xC) && !defined(STM32F107xC)
- RCC->CFGR &= (uint32_t)0xF8FF0000;
-#else
- RCC->CFGR &= (uint32_t)0xF0FF0000;
-#endif /* STM32F105xC */
-
- /* Reset HSEON, CSSON and PLLON bits */
- RCC->CR &= (uint32_t)0xFEF6FFFF;
-
- /* Reset HSEBYP bit */
- RCC->CR &= (uint32_t)0xFFFBFFFF;
-
- /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
- RCC->CFGR &= (uint32_t)0xFF80FFFF;
-
-#if defined(STM32F105xC) || defined(STM32F107xC)
- /* Reset PLL2ON and PLL3ON bits */
- RCC->CR &= (uint32_t)0xEBFFFFFF;
-
- /* Disable all interrupts and clear pending bits */
- RCC->CIR = 0x00FF0000;
-
- /* Reset CFGR2 register */
- RCC->CFGR2 = 0x00000000;
-#elif defined(STM32F100xB) || defined(STM32F100xE)
- /* Disable all interrupts and clear pending bits */
- RCC->CIR = 0x009F0000;
-
- /* Reset CFGR2 register */
- RCC->CFGR2 = 0x00000000;
-#else
- /* Disable all interrupts and clear pending bits */
- RCC->CIR = 0x009F0000;
-#endif /* STM32F105xC */
-
-#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
- #ifdef DATA_IN_ExtSRAM
- SystemInit_ExtMemCtl();
- #endif /* DATA_IN_ExtSRAM */
-#endif
-
-#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 by the PLL factors.
- *
- * (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
- * 8 MHz) but the real value may vary depending on the variations
- * in voltage and temperature.
- *
- * (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
- * 8 MHz or 25 MHz, depending on the product used), 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, pllmull = 0, pllsource = 0;
-
-#if defined(STM32F105xC) || defined(STM32F107xC)
- uint32_t prediv1source = 0, prediv1factor = 0, prediv2factor = 0, pll2mull = 0;
-#endif /* STM32F105xC */
-
-#if defined(STM32F100xB) || defined(STM32F100xE)
- uint32_t prediv1factor = 0;
-#endif /* STM32F100xB or STM32F100xE */
-
- /* Get SYSCLK source -------------------------------------------------------*/
- tmp = RCC->CFGR & RCC_CFGR_SWS;
-
- switch (tmp)
- {
- case 0x00: /* HSI used as system clock */
- SystemCoreClock = HSI_VALUE;
- break;
- case 0x04: /* HSE used as system clock */
- SystemCoreClock = HSE_VALUE;
- break;
- case 0x08: /* PLL used as system clock */
-
- /* Get PLL clock source and multiplication factor ----------------------*/
- pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
- pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
-
-#if !defined(STM32F105xC) && !defined(STM32F107xC)
- pllmull = ( pllmull >> 18) + 2;
-
- if (pllsource == 0x00)
- {
- /* HSI oscillator clock divided by 2 selected as PLL clock entry */
- SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
- }
- else
- {
- #if defined(STM32F100xB) || defined(STM32F100xE)
- prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
- /* HSE oscillator clock selected as PREDIV1 clock entry */
- SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
- #else
- /* HSE selected as PLL clock entry */
- if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
- {/* HSE oscillator clock divided by 2 */
- SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
- }
- else
- {
- SystemCoreClock = HSE_VALUE * pllmull;
- }
- #endif
- }
-#else
- pllmull = pllmull >> 18;
-
- if (pllmull != 0x0D)
- {
- pllmull += 2;
- }
- else
- { /* PLL multiplication factor = PLL input clock * 6.5 */
- pllmull = 13 / 2;
- }
-
- if (pllsource == 0x00)
- {
- /* HSI oscillator clock divided by 2 selected as PLL clock entry */
- SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
- }
- else
- {/* PREDIV1 selected as PLL clock entry */
-
- /* Get PREDIV1 clock source and division factor */
- prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
- prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
-
- if (prediv1source == 0)
- {
- /* HSE oscillator clock selected as PREDIV1 clock entry */
- SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
- }
- else
- {/* PLL2 clock selected as PREDIV1 clock entry */
-
- /* Get PREDIV2 division factor and PLL2 multiplication factor */
- prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4) + 1;
- pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8 ) + 2;
- SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
- }
- }
-#endif /* STM32F105xC */
- break;
-
- default:
- SystemCoreClock = HSI_VALUE;
- break;
- }
-
- /* Compute HCLK clock frequency ----------------*/
- /* Get HCLK prescaler */
- tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
- /* HCLK clock frequency */
- SystemCoreClock >>= tmp;
-}
-
-#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
-/**
- * @brief Setup the external memory controller. Called in startup_stm32f1xx.s
- * before jump to __main
- * @param None
- * @retval None
- */
-#ifdef DATA_IN_ExtSRAM
-/**
- * @brief Setup the external memory controller.
- * Called in startup_stm32f1xx_xx.s/.c before jump to main.
- * This function configures the external SRAM mounted on STM3210E-EVAL
- * board (STM32 High density devices). This SRAM will be used as program
- * data memory (including heap and stack).
- * @param None
- * @retval None
- */
-void SystemInit_ExtMemCtl(void)
-{
-/*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
- required, then adjust the Register Addresses */
-
- /* Enable FSMC clock */
- RCC->AHBENR = 0x00000114;
-
- /* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
- RCC->APB2ENR = 0x000001E0;
-
-/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
-/*---------------- SRAM Address lines configuration -------------------------*/
-/*---------------- NOE and NWE configuration --------------------------------*/
-/*---------------- NE3 configuration ----------------------------------------*/
-/*---------------- NBL0, NBL1 configuration ---------------------------------*/
-
- GPIOD->CRL = 0x44BB44BB;
- GPIOD->CRH = 0xBBBBBBBB;
-
- GPIOE->CRL = 0xB44444BB;
- GPIOE->CRH = 0xBBBBBBBB;
-
- GPIOF->CRL = 0x44BBBBBB;
- GPIOF->CRH = 0xBBBB4444;
-
- GPIOG->CRL = 0x44BBBBBB;
- GPIOG->CRH = 0x44444B44;
-
-/*---------------- FSMC Configuration ---------------------------------------*/
-/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
-
- FSMC_Bank1->BTCR[4] = 0x00001011;
- FSMC_Bank1->BTCR[5] = 0x00000200;
-}
-#endif /* DATA_IN_ExtSRAM */
-#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/