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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/main.c')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/main.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/main.c new file mode 100644 index 0000000..6d0ed97 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/main.c @@ -0,0 +1,238 @@ +/** + ****************************************************************************** + * @file DAC/DualModeDMA_SineWave/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" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup DAC_DualModeDMA_SineWave + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define DAC_DHR12RD_Address 0x40007420 + +/* Init Structure definition */ +DAC_InitTypeDef DAC_InitStructure; +DMA_InitTypeDef DMA_InitStructure; +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; +uint32_t Idx = 0; + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +const uint16_t Sine12bit[32] = { + 2047, 2447, 2831, 3185, 3498, 3750, 3939, 4056, 4095, 4056, + 3939, 3750, 3495, 3185, 2831, 2447, 2047, 1647, 1263, 909, + 599, 344, 155, 38, 0, 38, 155, 344, 599, 909, 1263, 1647}; + +uint32_t DualSine12bit[32]; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +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 + */ + + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically + connected to the DAC converter. In order to avoid parasitic consumption, + the GPIO pin should be configured in analog */ + GPIO_Configuration(); + + /* TIM2 Configuration */ + /* Time base configuration */ + TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); + TIM_TimeBaseStructure.TIM_Period = 0x19; + TIM_TimeBaseStructure.TIM_Prescaler = 0x0; + TIM_TimeBaseStructure.TIM_ClockDivision = 0x0; + TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; + TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); + + /* TIM2 TRGO selection */ + TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update); + + /* DAC channel1 Configuration */ + DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO; + DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None; + DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; + DAC_Init(DAC_Channel_1, &DAC_InitStructure); + + /* DAC channel2 Configuration */ + DAC_Init(DAC_Channel_2, &DAC_InitStructure); + + /* Fill Sine32bit table */ + for (Idx = 0; Idx < 32; Idx++) + { + DualSine12bit[Idx] = (Sine12bit[Idx] << 16) + (Sine12bit[Idx]); + } + +#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL + /* DMA2 channel4 configuration */ + DMA_DeInit(DMA2_Channel4); +#else + /* DMA1 channel4 configuration */ + DMA_DeInit(DMA1_Channel4); +#endif + DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12RD_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&DualSine12bit; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; + DMA_InitStructure.DMA_BufferSize = 32; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word; + DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; + DMA_InitStructure.DMA_Priority = DMA_Priority_High; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; + +#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL + DMA_Init(DMA2_Channel4, &DMA_InitStructure); + /* Enable DMA2 Channel4 */ + DMA_Cmd(DMA2_Channel4, ENABLE); +#else + DMA_Init(DMA1_Channel4, &DMA_InitStructure); + /* Enable DMA1 Channel4 */ + DMA_Cmd(DMA1_Channel4, ENABLE); +#endif + + /* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is + automatically connected to the DAC converter. */ + DAC_Cmd(DAC_Channel_1, ENABLE); + /* Enable DAC Channel2: Once the DAC channel2 is enabled, PA.05 is + automatically connected to the DAC converter. */ + DAC_Cmd(DAC_Channel_2, ENABLE); + + /* Enable DMA for DAC Channel2 */ + DAC_DMACmd(DAC_Channel_2, ENABLE); + + /* TIM2 enable counter */ + TIM_Cmd(TIM2, ENABLE); + + while (1) + { + } +} + + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* Enable peripheral clocks ------------------------------------------------*/ +#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL + /* DMA2 clock enable */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE); +#else + /* DMA1 clock enable */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); +#endif + /* GPIOA Periph clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); + /* DAC Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); + /* TIM2 Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); +} + + +/** + * @brief Configures the different GPIO ports. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically + connected to the DAC converter. In order to avoid parasitic consumption, + the GPIO pin should be configured in analog */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; + GPIO_Init(GPIOA, &GPIO_InitStructure); +} + +/** + * @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****/ |