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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/NVIC/DMA_WFIMode/main.c')
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/NVIC/DMA_WFIMode/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/NVIC/DMA_WFIMode/main.c new file mode 100644 index 0000000..f056195 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/NVIC/DMA_WFIMode/main.c @@ -0,0 +1,244 @@ +/** + ****************************************************************************** + * @file NVIC/DMA_WFIMode/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. + * + * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" +#include "stm32_eval.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup NVIC_DMA_WFIMode + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#ifdef USE_STM3210C_EVAL +#define USARTy_DR_Address 0x40004404 +#define USARTy_DMA1_Channel DMA1_Channel6 +#define USARTy_DMA1_IRQn DMA1_Channel6_IRQn +#else +#define USARTy_DR_Address 0x40013804 +#define USARTy_DMA1_Channel DMA1_Channel5 +#define USARTy_DMA1_IRQn DMA1_Channel5_IRQn +#endif + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +NVIC_InitTypeDef NVIC_InitStructure; +USART_InitTypeDef USART_InitStructure; +DMA_InitTypeDef DMA_InitStructure; +__IO uint32_t LowPowerMode = 0; +uint16_t DST_Buffer[10]= {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void DMA_Configuration(void); +uint8_t Buffercmp16(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength); +void Delay(__IO uint32_t nCount); + +/* 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 + */ + + /* Configure the system clocks */ + RCC_Configuration(); + + /* Initialize Leds and Key Button mounted on STM3210X-EVAL board */ + STM_EVAL_LEDInit(LED1); + STM_EVAL_LEDInit(LED2); + STM_EVAL_LEDInit(LED3); + STM_EVAL_LEDInit(LED4); + STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI); + + /* Configures the DMA Channel */ + DMA_Configuration(); + +/* EVAL_COM1 configuration ---------------------------------------------------*/ + /* EVAL_COM1 configured as follow: + - BaudRate = 115200 baud + - Word Length = 8 Bits + - One Stop Bit + - No parity + - Hardware flow control disabled (RTS and CTS signals) + - Receive and transmit enabled + */ + 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_HardwareFlowControl = USART_HardwareFlowControl_None; + USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; + + STM_EVAL_COMInit(COM1, &USART_InitStructure); + USART_DMACmd(EVAL_COM1, USART_DMAReq_Rx, ENABLE); + + NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); + + /* Enable the USARTy_DMA1_IRQn Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = USARTy_DMA1_IRQn; + NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); + + /* Enable the EXTI9_5 Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; + NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; + NVIC_Init(&NVIC_InitStructure); + + while (1) + { + if(LowPowerMode == 1) + { + + STM_EVAL_LEDOff(LED2); + STM_EVAL_LEDOff(LED3); + + /* Request to enter WFI mode */ + __WFI(); + LowPowerMode = 0; + } + + Delay(0xFFFFF); + STM_EVAL_LEDToggle(LED1); + } +} + +/** + * @brief Configures the different system clocks + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* DMA1 clock enable */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); +} + +/** + * @brief Configures the used DMA Channel. + * @param None + * @retval None + */ +void DMA_Configuration(void) +{ + DMA_InitTypeDef DMA_InitStructure; + + /* USARTy_DMA1_Channel Config */ + DMA_DeInit(USARTy_DMA1_Channel); + DMA_InitStructure.DMA_PeripheralBaseAddr = USARTy_DR_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)DST_Buffer; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; + DMA_InitStructure.DMA_BufferSize = 10; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; + DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; + DMA_InitStructure.DMA_Priority = DMA_Priority_High; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; + DMA_Init(USARTy_DMA1_Channel, &DMA_InitStructure); + + /* Enable USARTy_DMA1_Channel Transfer complete interrupt */ + DMA_ITConfig(USARTy_DMA1_Channel, DMA_IT_TC, ENABLE); + + /* USARTy_DMA1_Channel enable */ + DMA_Cmd(USARTy_DMA1_Channel, ENABLE); +} + +/** + * @brief Compares two buffers. + * @param pBuffer1, pBuffer2: buffers to be compared. + * @param BufferLength: buffer's length + * @retval 0: pBuffer1 identical to pBuffer2 + * 1: pBuffer1 differs from pBuffer2 + */ +uint8_t Buffercmp16(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength) +{ + while(BufferLength--) + { + if(*pBuffer1 != *pBuffer2) + { + return 1; + } + + pBuffer1++; + pBuffer2++; + } + return 0; +} + +/** + * @brief Inserts a delay time. + * @param nCount: specifies the delay time length. + * @retval None + */ +void Delay(__IO uint32_t nCount) +{ + for(; nCount != 0; nCount--); +} + +#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****/ |