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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/main.c')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/main.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/main.c new file mode 100644 index 0000000..7b5773d --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/main.c @@ -0,0 +1,184 @@ +/** + ****************************************************************************** + * @file DAC/TwoChannels_TriangleWave/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_TwoChannels_TriangleWave + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Init Structure definition */ +DAC_InitTypeDef DAC_InitStructure; +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* 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 */ + TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); + TIM_TimeBaseStructure.TIM_Period = 0xF; + TIM_TimeBaseStructure.TIM_Prescaler = 0xF; + 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_Triangle; + DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_TriangleAmplitude_2047; + DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; + DAC_Init(DAC_Channel_1, &DAC_InitStructure); + + /* DAC channel2 Configuration */ + DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_TriangleAmplitude_1023; + DAC_Init(DAC_Channel_2, &DAC_InitStructure); + + /* 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); + + /* Set DAC dual channel DHR12RD register */ + DAC_SetDualChannelData(DAC_Align_12b_R, 0x100, 0x100); + + /* 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 ------------------------------------------------*/ + /* 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****/ |