/**
******************************************************************************
* @file NVIC/IRQ_Mask/main.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* 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.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup IRQ_Mask
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
void TIM_Config(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* Initialize Leds mounted on STM3210X-EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* Initialize the KEY and WAKEUP buttons mounted on STM3210X-EVAL board */
STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_GPIO);
STM_EVAL_PBInit(BUTTON_WAKEUP, BUTTON_MODE_EXTI);
/* TIM configuration -------------------------------------------------------*/
TIM_Config();
while (1)
{
/* Wait until KEY button is pressed. */
while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET)
{
}
while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET)
{
}
/* This instruction raises the execution priority to 0. This prevents all
exceptions with configurable priority from activating, other than through
the HardFault fault escalation mechanism. */
__disable_irq();
/* Turn LED4 ON */
STM_EVAL_LEDOn(LED4);
/* Wait until KEY button is pressed. */
while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET)
{
}
while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET)
{
}
/* This instruction will allow all exceptions with configurable priority to
be activated. */
__enable_irq();
/* Turn LED4 OFF */
STM_EVAL_LEDOff(LED4);
}
}
/**
* @brief Configures the used Timers.
* @param None
* @retval None
*/
void TIM_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable TIM2, TIM3 and TIM4 clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 |
RCC_APB1Periph_TIM4, ENABLE);
/* TIM2 configuration */
TIM_TimeBaseStructure.TIM_Period = 0x4AF;
TIM_TimeBaseStructure.TIM_Prescaler = ((SystemCoreClock/1200) - 1);
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_OCStructInit(&TIM_OCInitStructure);
/* Output Compare Timing Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
TIM_OCInitStructure.TIM_Pulse = 0x0;
TIM_OC1Init(TIM2, &TIM_OCInitStructure);
/* TIM3 configuration */
TIM_TimeBaseStructure.TIM_Period = 0x95F;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
/* Output Compare Timing Mode configuration: Channel1 */
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
/* TIM4 configuration */
TIM_TimeBaseStructure.TIM_Period = 0xE0F;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
/* Output Compare Timing Mode configuration: Channel1 */
TIM_OC1Init(TIM4, &TIM_OCInitStructure);
/* Immediate load of TIM2,TIM3 and TIM4 Precaler values */
TIM_PrescalerConfig(TIM2, ((SystemCoreClock/1200) - 1), TIM_PSCReloadMode_Immediate);
TIM_PrescalerConfig(TIM3, ((SystemCoreClock/1200) - 1), TIM_PSCReloadMode_Immediate);
TIM_PrescalerConfig(TIM4, ((SystemCoreClock/1200) - 1), TIM_PSCReloadMode_Immediate);
/* Clear TIM2, TIM3 and TIM4 update pending flags */
TIM_ClearFlag(TIM2, TIM_FLAG_Update);
TIM_ClearFlag(TIM3, TIM_FLAG_Update);
TIM_ClearFlag(TIM4, TIM_FLAG_Update);
/* Configure two bits for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
/* Enable the TIM2 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable the TIM3 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_Init(&NVIC_InitStructure);
/* Enable the TIM4 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_Init(&NVIC_InitStructure);
/* Enable TIM2, TIM3 and TIM4 Update interrupts */
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);
TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);
/* TIM2, TIM3 and TIM4 enable counters */
TIM_Cmd(TIM2, ENABLE);
TIM_Cmd(TIM3, ENABLE);
TIM_Cmd(TIM4, ENABLE);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t 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 2011 STMicroelectronics *****END OF FILE****/