From 32e57dac2e61e79b029593eb4d34d727bcc10678 Mon Sep 17 00:00:00 2001 From: iperry Date: Thu, 17 Dec 2009 02:37:07 +0000 Subject: Initial commit of library code, moved from leaftest repo git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123 --- src/stm32lib/examples/BKP/Tamper/main.c | 301 ++++++++++++++++++++++++++++++++ 1 file changed, 301 insertions(+) create mode 100755 src/stm32lib/examples/BKP/Tamper/main.c (limited to 'src/stm32lib/examples/BKP/Tamper/main.c') diff --git a/src/stm32lib/examples/BKP/Tamper/main.c b/src/stm32lib/examples/BKP/Tamper/main.c new file mode 100755 index 0000000..c541e4d --- /dev/null +++ b/src/stm32lib/examples/BKP/Tamper/main.c @@ -0,0 +1,301 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : main.c +* Author : MCD Application Team +* Version : V2.0.1 +* Date : 06/13/2008 +* Description : Main program body. +******************************************************************************** +* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS +* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. +* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, +* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE +* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "main.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +ErrorStatus HSEStartUpStatus; + +#ifdef USE_STM3210B_EVAL +u16 BKPDataReg[BKP_DR_NUMBER] = + { + BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8, + BKP_DR9, BKP_DR10 + }; +#elif defined USE_STM3210E_EVAL +u16 BKPDataReg[BKP_DR_NUMBER] = + { + BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8, + BKP_DR9, BKP_DR10, BKP_DR11, BKP_DR12, BKP_DR13, BKP_DR14, BKP_DR15, BKP_DR16, + BKP_DR17, BKP_DR18, BKP_DR19, BKP_DR20, BKP_DR21, BKP_DR22, BKP_DR23, BKP_DR24, + BKP_DR25, BKP_DR26, BKP_DR27, BKP_DR28, BKP_DR29, BKP_DR30, BKP_DR31, BKP_DR32, + BKP_DR33, BKP_DR34, BKP_DR35, BKP_DR36, BKP_DR37, BKP_DR38, BKP_DR39, BKP_DR40, + BKP_DR41, BKP_DR42 + }; +#endif /* USE_STM3210B_EVAL */ + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +void NVIC_Configuration(void); +void WriteToBackupReg(u16 FirstBackupData); +u32 CheckBackupReg(u16 FirstBackupData); + +/* Private functions ---------------------------------------------------------*/ +/******************************************************************************* +* Function Name : main +* Description : Main program. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +int main(void) +{ +#ifdef DEBUG + debug(); +#endif + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* NVIC configuration */ + NVIC_Configuration(); + + /* GPIO configuration */ + GPIO_Configuration(); + + /* Enable PWR and BKP clock */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); + + /* Enable write access to Backup domain */ + PWR_BackupAccessCmd(ENABLE); + + /* Clear Tamper pin Event(TE) pending flag */ + BKP_ClearFlag(); + + /* Tamper pin active on low level */ + BKP_TamperPinLevelConfig(BKP_TamperPinLevel_Low); + + /* Enable Tamper interrupt */ + BKP_ITConfig(ENABLE); + + /* Enable Tamper pin */ + BKP_TamperPinCmd(ENABLE); + + /* Write data to Backup DRx registers */ + WriteToBackupReg(0xA53C); + /* Check if the written data are correct */ + if(CheckBackupReg(0xA53C) == 0x00) + { + /* Turn on led connected to GPIO_LED Pin6 */ + GPIO_Write(GPIO_LED, GPIO_Pin_6); + } + else + { + /* Turn on led connected to GPIO_LED Pin7 */ + GPIO_Write(GPIO_LED, GPIO_Pin_7); + } + + while (1) + { + } +} + +/******************************************************************************* +* Function Name : RCC_Configuration +* Description : Configures the different system clocks. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void RCC_Configuration(void) +{ + /* RCC system reset(for debug purpose) */ + RCC_DeInit(); + + /* Enable HSE */ + RCC_HSEConfig(RCC_HSE_ON); + + /* Wait till HSE is ready */ + HSEStartUpStatus = RCC_WaitForHSEStartUp(); + + if(HSEStartUpStatus == SUCCESS) + { + /* Enable Prefetch Buffer */ + FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); + + /* Flash 2 wait state */ + FLASH_SetLatency(FLASH_Latency_2); + + /* HCLK = SYSCLK */ + RCC_HCLKConfig(RCC_SYSCLK_Div1); + + /* PCLK2 = HCLK */ + RCC_PCLK2Config(RCC_HCLK_Div1); + + /* PCLK1 = HCLK/2 */ + RCC_PCLK1Config(RCC_HCLK_Div2); + + /* PLLCLK = 8MHz * 9 = 72 MHz */ + RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9); + + /* Enable PLL */ + RCC_PLLCmd(ENABLE); + + /* Wait till PLL is ready */ + while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) + { + } + + /* Select PLL as system clock source */ + RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); + + /* Wait till PLL is used as system clock source */ + while(RCC_GetSYSCLKSource() != 0x08) + { + } + } + + /* Enable GPIO_LED clock */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_LED, ENABLE); +} + +/******************************************************************************* +* Function Name : GPIO_Configuration +* Description : Configures the different GPIO ports. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Configure GPIO_LED Pin 6, Pin 7, Pin 8 and Pin 9 as Output push-pull ----*/ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; + GPIO_Init(GPIO_LED, &GPIO_InitStructure); +} + +/******************************************************************************* +* Function Name : NVIC_Configuration +* Description : Configures NVIC and Vector Table base location. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_Configuration(void) +{ + NVIC_InitTypeDef NVIC_InitStructure; + +#ifdef VECT_TAB_RAM + /* Set the Vector Table base location at 0x20000000 */ + NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); +#else /* VECT_TAB_FLASH */ + /* Set the Vector Table base location at 0x08000000 */ + NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0); +#endif + + /* Enable TAMPER IRQChannel */ + NVIC_InitStructure.NVIC_IRQChannel = TAMPER_IRQChannel; + NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); +} + +#ifdef DEBUG +/******************************************************************************* +* Function Name : assert_failed +* Description : Reports the name of the source file and the source line number +* where the assert_param error has occurred. +* Input : - file: pointer to the source file name +* - line: assert_param error line source number +* Output : None +* Return : None +*******************************************************************************/ +void assert_failed(u8* file, u32 line) +{ + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + /* Infinite loop */ + while (1) + { + } +} +#endif + +/******************************************************************************* +* Function Name : WriteToBackupReg +* Description : Writes data Backup DRx registers. +* Input : FirstBackupData: data to be written to Backup data registers. +* Output : None +* Return : None +*******************************************************************************/ +void WriteToBackupReg(u16 FirstBackupData) +{ + u32 index = 0; + + for (index = 0; index < BKP_DR_NUMBER; index++) + { + BKP_WriteBackupRegister(BKPDataReg[index], FirstBackupData + (index * 0x5A)); + } +} + +/******************************************************************************* +* Function Name : CheckBackupReg +* Description : Checks if the Backup DRx registers values are correct or not. +* Input : FirstBackupData: data to be compared with Backup data registers. +* Output : None +* Return : - 0: All Backup DRx registers values are correct +* - Value different from 0: Number of the first Backup register +* which value is not correct +*******************************************************************************/ +u32 CheckBackupReg(u16 FirstBackupData) +{ + u32 index = 0; + + for (index = 0; index < BKP_DR_NUMBER; index++) + { + if (BKP_ReadBackupRegister(BKPDataReg[index]) != (FirstBackupData + (index * 0x5A))) + { + return (index + 1); + } + } + + return 0; +} + +/******************************************************************************* +* Function Name : IsBackupRegReset +* Description : Checks if the Backup DRx registers are reset or not. +* Input : None +* Output : None +* Return : - 0: All Backup DRx registers are reset +* - Value different from 0: Number of the first Backup register +* not reset +*******************************************************************************/ +u32 IsBackupRegReset(void) +{ + u32 index = 0; + + for (index = 0; index < BKP_DR_NUMBER; index++) + { + if (BKP_ReadBackupRegister(BKPDataReg[index]) != 0x0000) + { + return (index + 1); + } + } + + return 0; +} + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3