diff options
Diffstat (limited to 'src/stm32lib/examples/RTC/Calendar/main.c')
| -rwxr-xr-x | src/stm32lib/examples/RTC/Calendar/main.c | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/src/stm32lib/examples/RTC/Calendar/main.c b/src/stm32lib/examples/RTC/Calendar/main.c new file mode 100755 index 0000000..48d13dd --- /dev/null +++ b/src/stm32lib/examples/RTC/Calendar/main.c @@ -0,0 +1,513 @@ +/******************** (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 "platform_config.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 ---------------------------------------------------------*/
+vu32 TimeDisplay = 0;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void USART_Configuration(void);
+void RTC_Configuration(void);
+void NVIC_Configuration(void);
+u32 Time_Regulate(void);
+void Time_Adjust(void);
+void Time_Show(void);
+void Time_Display(u32 TimeVar);
+u8 USART_Scanf(u32 value);
+
+#ifdef __GNUC__
+/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
+ set to 'Yes') calls __io_putchar() */
+#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
+#else
+#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
+#endif /* __GNUC__ */
+
+/* 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();
+
+ /* Configure the USART1 */
+ USART_Configuration();
+
+ if (BKP_ReadBackupRegister(BKP_DR1) != 0xA5A5)
+ {
+ /* Backup data register value is not correct or not yet programmed (when
+ the first time the program is executed) */
+
+ printf("\r\n\n RTC not yet configured....");
+
+ /* RTC Configuration */
+ RTC_Configuration();
+
+ printf("\r\n RTC configured....");
+
+ /* Adjust time by values entred by the user on the hyperterminal */
+ Time_Adjust();
+
+ BKP_WriteBackupRegister(BKP_DR1, 0xA5A5);
+ }
+ else
+ {
+ /* Check if the Power On Reset flag is set */
+ if (RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET)
+ {
+ printf("\r\n\n Power On Reset occurred....");
+ }
+ /* Check if the Pin Reset flag is set */
+ else if (RCC_GetFlagStatus(RCC_FLAG_PINRST) != RESET)
+ {
+ printf("\r\n\n External Reset occurred....");
+ }
+
+ printf("\r\n No need to configure RTC....");
+ /* Wait for RTC registers synchronization */
+ RTC_WaitForSynchro();
+
+ /* Enable the RTC Second */
+ RTC_ITConfig(RTC_IT_SEC, ENABLE);
+ /* Wait until last write operation on RTC registers has finished */
+ RTC_WaitForLastTask();
+ }
+
+#ifdef RTCClockOutput_Enable
+ /* Enable PWR and BKP clocks */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
+
+ /* Allow access to BKP Domain */
+ PWR_BackupAccessCmd(ENABLE);
+
+ /* Disable the Tamper Pin */
+ BKP_TamperPinCmd(DISABLE); /* To output RTCCLK/64 on Tamper pin, the tamper
+ functionality must be disabled */
+
+ /* Enable RTC Clock Output on Tamper Pin */
+ BKP_RTCOutputConfig(BKP_RTCOutputSource_CalibClock);
+#endif
+
+ /* Clear reset flags */
+ RCC_ClearFlag();
+
+ /* Display time in infinite loop */
+ Time_Show();
+}
+
+/*******************************************************************************
+* 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 USART1, GPIOA, GPIOC and GPIO_LED clocks */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA |
+ RCC_APB2Periph_GPIO_LED | RCC_APB2Periph_GPIOC , 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 = 1;
+ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+ 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 GPIO_LED pin 6 as Output push-pull */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_Init(GPIO_LED, &GPIO_InitStructure);
+
+ /* Configure USART1 Tx (PA.09) as alternate function push-pull */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+ GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+ /* Configure USART1 Rx (PA.10) as input floating */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+ GPIO_Init(GPIOA, &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 LSE */
+ RCC_LSEConfig(RCC_LSE_ON);
+ /* Wait till LSE is ready */
+ while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
+ {}
+
+ /* Select LSE as RTC Clock Source */
+ RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
+
+ /* 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(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */
+
+ /* Wait until last write operation on RTC registers has finished */
+ RTC_WaitForLastTask();
+}
+
+/*******************************************************************************
+* Function Name : Time_Regulate
+* Description : Returns the time entered by user, using Hyperterminal.
+* Input : None
+* Output : None
+* Return : Current time RTC counter value
+*******************************************************************************/
+u32 Time_Regulate(void)
+{
+ u32 Tmp_HH = 0xFF, Tmp_MM = 0xFF, Tmp_SS = 0xFF;
+
+ printf("\r\n==============Time Settings=====================================");
+ printf("\r\n Please Set Hours");
+
+ while (Tmp_HH == 0xFF)
+ {
+ Tmp_HH = USART_Scanf(23);
+ }
+ printf(": %d", Tmp_HH);
+ printf("\r\n Please Set Minutes");
+ while (Tmp_MM == 0xFF)
+ {
+ Tmp_MM = USART_Scanf(59);
+ }
+ printf(": %d", Tmp_MM);
+ printf("\r\n Please Set Seconds");
+ while (Tmp_SS == 0xFF)
+ {
+ Tmp_SS = USART_Scanf(59);
+ }
+ printf(": %d", Tmp_SS);
+
+ /* Return the value to store in RTC counter register */
+ return((Tmp_HH*3600 + Tmp_MM*60 + Tmp_SS));
+}
+
+/*******************************************************************************
+* Function Name : Time_Adjust
+* Description : Adjusts time.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void Time_Adjust(void)
+{
+ /* Wait until last write operation on RTC registers has finished */
+ RTC_WaitForLastTask();
+ /* Change the current time */
+ RTC_SetCounter(Time_Regulate());
+ /* Wait until last write operation on RTC registers has finished */
+ RTC_WaitForLastTask();
+}
+
+/*******************************************************************************
+* Function Name : Time_Display
+* Description : Displays the current time.
+* Input : - TimeVar: RTC counter value.
+* Output : None
+* Return : None
+*******************************************************************************/
+void Time_Display(u32 TimeVar)
+{
+ u32 THH = 0, TMM = 0, TSS = 0;
+
+ /* Compute hours */
+ THH = TimeVar / 3600;
+ /* Compute minutes */
+ TMM = (TimeVar % 3600) / 60;
+ /* Compute seconds */
+ TSS = (TimeVar % 3600) % 60;
+
+ printf("Time: %0.2d:%0.2d:%0.2d\r", THH, TMM, TSS);
+}
+
+/*******************************************************************************
+* Function Name : Time_Show
+* Description : Shows the current time (HH:MM:SS) on the Hyperterminal.
+* Input : None
+* Output : None
+* Return : None
+******************************************************************************/
+void Time_Show(void)
+{
+ printf("\n\r");
+
+ /* Infinite loop */
+ while (1)
+ {
+ /* If 1s has paased */
+ if (TimeDisplay == 1)
+ {
+ /* Display current time */
+ Time_Display(RTC_GetCounter());
+ TimeDisplay = 0;
+ }
+ }
+}
+
+/*******************************************************************************
+* Function Name : USART_Configuration
+* Description : Configures the USART1.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void USART_Configuration(void)
+{
+ USART_InitTypeDef USART_InitStructure;
+
+ /* Enable USARTx clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
+
+ /* USART1 configuration ----------------------------------------------------*/
+ /* USART1 configured as follow:
+ - BaudRate = 115200 baud
+ - Word Length = 8 Bits
+ - One Stop Bit
+ - No parity
+ - Receive and transmit enabled
+ - Hardware flow control disabled (RTS and CTS signals)
+ */
+ USART_InitStructure.USART_BaudRate = 115200;
+ USART_InitStructure.USART_WordLength = USART_WordLength_8b;
+ USART_InitStructure.USART_StopBits = USART_StopBits_1;
+ USART_InitStructure.USART_Parity = USART_Parity_No;
+ USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
+ USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+
+ USART_Init(USART1, &USART_InitStructure);
+
+ /* Enable USART1 */
+ USART_Cmd(USART1, ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : PUTCHAR_PROTOTYPE
+* Description : Retargets the C library printf function to the USART.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+PUTCHAR_PROTOTYPE
+{
+ /* Place your implementation of fputc here */
+ /* e.g. write a character to the USART */
+ USART_SendData(USART1, (u8) ch);
+
+ /* Loop until the end of transmission */
+ while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
+ {}
+
+ return ch;
+}
+
+/*******************************************************************************
+* Function Name : USART_Scanf
+* Description : Gets numeric values from the hyperterminal.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+u8 USART_Scanf(u32 value)
+{
+ u32 index = 0;
+ u32 tmp[2] = {0, 0};
+
+ while (index < 2)
+ {
+ /* Loop until RXNE = 1 */
+ while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
+ {}
+ tmp[index++] = (USART_ReceiveData(USART1));
+ if ((tmp[index - 1] < 0x30) || (tmp[index - 1] > 0x39))
+ {
+ printf("\n\rPlease enter valid number between 0 and 9");
+ index--;
+ }
+ }
+ /* Calculate the Corresponding value */
+ index = (tmp[1] - 0x30) + ((tmp[0] - 0x30) * 10);
+ /* Checks */
+ if (index > value)
+ {
+ printf("\n\rPlease enter valid number between 0 and %d", value);
+ return 0xFF;
+ }
+ return index;
+}
+
+#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****/
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