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

1 files changed, 323 insertions, 0 deletions

diff --git a/src/stm32lib/examples/RTC/LSI_Calib/main.c b/src/stm32lib/examples/RTC/LSI_Calib/main.c
new file mode 100755
index 0000000..612bb5f
--- /dev/null
+++ b/src/stm32lib/examples/RTC/LSI_Calib/main.c
@@ -0,0 +1,323 @@
+/******************** (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 "stm32f10x_lib.h"

+#include <stdio.h>

+

+/* Private typedef -----------------------------------------------------------*/

+/* Private define ------------------------------------------------------------*/

+#define RTCClockOutput_Enable  /* RTC Clock/64 is output on tamper pin(PC.13) */

+

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+ErrorStatus HSEStartUpStatus;

+

+TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

+TIM_ICInitTypeDef  TIM_ICInitStructure;

+RCC_ClocksTypeDef RCC_Clocks;

+vu32 PeriodValue = 0,  LsiFreq = 0;

+vu32 OperationComplete = 0;

+

+/* Private function prototypes -----------------------------------------------*/

+void RCC_Configuration(void);

+void GPIO_Configuration(void);

+void RTC_Configuration(void);

+void NVIC_Configuration(void);

+

+/* 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();

+

+  /* Configure the GPIOs */

+  GPIO_Configuration();

+

+  /* RTC Configuration */

+  RTC_Configuration();

+

+  /* Wait until Key Push button is pressed */

+  while (GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_8) != 0)

+  {}

+

+  /* Get the Frequency value */

+  RCC_GetClocksFreq(&RCC_Clocks);

+

+  /* Enable TIM5 APB1 clocks */

+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);

+

+  /* Connect internally the TM5_CH4 Input Capture to the LSI clock output */

+  GPIO_PinRemapConfig(GPIO_Remap_TIM5CH4_LSI, ENABLE);

+

+  /* TIM5 Time base configuration */

+  TIM_TimeBaseStructure.TIM_Prescaler = 0;

+  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

+  TIM_TimeBaseStructure.TIM_Period = 0xFFFF;

+  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;

+  TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);

+

+  /* TIM5 Channel4 Input capture Mode configuration */

+  TIM_ICInitStructure.TIM_Channel = TIM_Channel_4;

+  TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;

+  TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;

+  TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;

+  TIM_ICInitStructure.TIM_ICFilter = 0;

+  TIM_ICInit(TIM5, &TIM_ICInitStructure);

+

+  /* Reinitialize the index for the interrupt */

+  OperationComplete = 0;

+

+  /* Enable the TIM5 Input Capture counter */

+  TIM_Cmd(TIM5, ENABLE);

+  /* Reset all TIM5 flags */

+  TIM5->SR = 0;

+  /* Enable the TIM5 channel 4 */

+  TIM_ITConfig(TIM5, TIM_IT_CC4, ENABLE);

+

+  /* Wait the TIM5 measuring operation to be completed */

+  while (OperationComplete != 2)

+  {}

+

+  /* Compute the actual frequency of the LSI. (TIM5_CLK = 2 * PCLK1)  */

+  if (PeriodValue != 0)

+  {

+    LsiFreq = (u32)((u32)(RCC_Clocks.PCLK1_Frequency * 2) / (u32)PeriodValue);

+  }

+

+  /* Adjust the RTC prescaler value */

+  RTC_SetPrescaler(LsiFreq - 1);

+

+  /* Wait until last write operation on RTC registers has finished */

+  RTC_WaitForLastTask();

+

+  /* Set GPIOF pin 7 */

+  GPIO_SetBits(GPIOF, GPIO_Pin_7);

+

+  while (1)

+  {

+    /* Inifinite loop */

+  }

+

+}

+

+/*******************************************************************************

+* 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 GPIOG, GPIOF and AFIO clocks */

+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOG | RCC_APB2Periph_GPIOF

+                         | RCC_APB2Periph_AFIO, ENABLE);

+}

+

+/*******************************************************************************

+* Function Name  : NVIC_Configuration

+* Description    : Configures the nested vectored interrupt controller.

+* 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

+

+  /* Configure one bit for preemption priority */

+  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

+

+  /* Enable the RTC Interrupt */

+  NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQChannel;

+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

+  NVIC_Init(&NVIC_InitStructure);

+

+  /* Enable the TIM5 Interrupt */

+  NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQChannel;

+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;

+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

+  NVIC_Init(&NVIC_InitStructure);

+}

+

+/*******************************************************************************

+* 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 GPIOF pin 6 and pin 7 as Output push-pull */

+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;

+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

+  GPIO_Init(GPIOF, &GPIO_InitStructure);

+

+  /* Configure Key Button GPIO Pin as input floating */

+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;

+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

+  GPIO_Init(GPIOG, &GPIO_InitStructure);

+}

+

+/*******************************************************************************

+* Function Name  : RTC_Configuration

+* Description    : Configures the RTC.

+* Input          : None

+* Output         : None

+* Return         : None

+*******************************************************************************/

+void RTC_Configuration(void)

+{

+  /* Enable PWR and BKP clocks */

+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);

+

+  /* Allow access to BKP Domain */

+  PWR_BackupAccessCmd(ENABLE);

+

+  /* Reset Backup Domain */

+  BKP_DeInit();

+

+  /* Enable the LSI OSC */

+  RCC_LSICmd(ENABLE);

+  /* Wait till LSI is ready */

+  while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)

+  {}

+  /* Select the RTC Clock Source */

+  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);

+

+  /* Enable RTC Clock */

+  RCC_RTCCLKCmd(ENABLE);

+

+  /* Wait for RTC registers synchronization */

+  RTC_WaitForSynchro();

+

+  /* Wait until last write operation on RTC registers has finished */

+  RTC_WaitForLastTask();

+

+  /* Enable the RTC Second */

+  RTC_ITConfig(RTC_IT_SEC, ENABLE);

+

+  /* Wait until last write operation on RTC registers has finished */

+  RTC_WaitForLastTask();

+

+  /* Set RTC prescaler: set RTC period to 1sec */

+  RTC_SetPrescaler(40000);

+

+  /* Wait until last write operation on RTC registers has finished */

+  RTC_WaitForLastTask();

+

+  /* To output second signal on Tamper pin, the tamper functionality

+       must be disabled (by default this functionality is disabled) */

+  BKP_TamperPinCmd(DISABLE);

+

+  /* Enable the RTC Second Output on Tamper Pin */

+  BKP_RTCOutputConfig(BKP_RTCOutputSource_Second);

+}

+

+#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

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/