diff libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannel_NoiseWave/main.c @ 0:c59513fd84fb

Initial commit of STM32 test code.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 03 Oct 2011 21:19:15 +1030
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannel_NoiseWave/main.c	Mon Oct 03 21:19:15 2011 +1030
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+/**
+  ******************************************************************************
+  * @file    DAC/OneChannel_NoiseWave/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>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup DAC_OneChannel_NoiseWave
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Init Structure definition */
+DAC_InitTypeDef            DAC_InitStructure;
+
+/* 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();
+
+  /* DAC channel1 Configuration */
+  DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software;
+  DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_Noise;
+  DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bits8_0;
+  DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
+  DAC_Init(DAC_Channel_1, &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);
+
+  /* Set DAC Channel1 DHR12L register */
+  DAC_SetChannel1Data(DAC_Align_12b_L, 0x7FF0);
+
+  while (1)
+  {
+    /* Start DAC Channel1 conversion by software */
+    DAC_SoftwareTriggerCmd(DAC_Channel_1, ENABLE);
+  }
+}
+
+/**
+  * @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);
+}
+
+/**
+  * @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_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****/