diff options
Diffstat (limited to 'src/stm32lib/examples/NVIC/IRQ_Channels/main.c')
| -rwxr-xr-x | src/stm32lib/examples/NVIC/IRQ_Channels/main.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/src/stm32lib/examples/NVIC/IRQ_Channels/main.c b/src/stm32lib/examples/NVIC/IRQ_Channels/main.c new file mode 100755 index 0000000..47b3df9 --- /dev/null +++ b/src/stm32lib/examples/NVIC/IRQ_Channels/main.c @@ -0,0 +1,261 @@ +/******************** (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"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+NVIC_InitTypeDef NVIC_InitStructure;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void TIM_Configuration(void);
+
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name : main
+* Description : Main program.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+int main(void)
+{
+#ifdef DEBUG
+ debug();
+#endif
+
+ /* Configure the system clocks */
+ RCC_Configuration();
+
+ /* Configure GPIOs */
+ GPIO_Configuration();
+
+ /* Configure TIMs */
+ TIM_Configuration();
+
+#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_2);
+
+ /* Enable the TIM2 Interrupt */
+ NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQChannel;
+ 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_IRQChannel;
+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
+ NVIC_Init(&NVIC_InitStructure);
+
+ /* Enable the TIM4 Interrupt */
+ NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQChannel;
+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
+ NVIC_Init(&NVIC_InitStructure);
+
+ 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);
+
+ /* Enable TIM2, TIM3 and TIM4 clocks */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 |
+ RCC_APB1Periph_TIM4, ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : GPIO_Configuration
+* Description : Configures the used GPIO pins.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Configure GPIO_LED pin 6, GPIO_LED pin 7, GPIO_LED pin 8 as output push-pull */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_Init(GPIO_LED, &GPIO_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : TIM_Configuration
+* Description : Configures the used Timers.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void TIM_Configuration(void)
+{
+ TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
+ TIM_OCInitTypeDef TIM_OCInitStructure;
+
+ /* TIM2 configuration */
+ TIM_TimeBaseStructure.TIM_Period = 0x4AF;
+ TIM_TimeBaseStructure.TIM_Prescaler = 0xEA5F;
+ TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
+ TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
+ TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0000;
+ 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);
+
+ /* TIM2 enable counter */
+ TIM_Cmd(TIM2, ENABLE);
+ /* TIM3 enable counter */
+ TIM_Cmd(TIM3, ENABLE);
+ /* TIM4 enable counter */
+ TIM_Cmd(TIM4, ENABLE);
+
+ /* Immediate load of TIM2 Precaler value */
+ TIM_PrescalerConfig(TIM2, 0xEA5F, TIM_PSCReloadMode_Immediate);
+ /* Immediate load of TIM3 Precaler value */
+ TIM_PrescalerConfig(TIM3, 0xEA5F, TIM_PSCReloadMode_Immediate);
+ /* Immediate load of TIM4 Precaler value */
+ TIM_PrescalerConfig(TIM4, 0xEA5F, TIM_PSCReloadMode_Immediate);
+
+ /* Clear TIM2 update pending flag */
+ TIM_ClearFlag(TIM2, TIM_FLAG_Update);
+ /* Clear TIM3 update pending flag */
+ TIM_ClearFlag(TIM3, TIM_FLAG_Update);
+ /* Clear TIM4 update pending flag */
+ TIM_ClearFlag(TIM4, TIM_FLAG_Update);
+
+ /* Enable TIM2 Update interrupt */
+ TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
+ /* Enable TIM3 Update interrupt */
+ TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);
+ /* Enable TIM4 Update interrupt */
+ TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);
+}
+
+#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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