ST的例子为什么不对啊!!??

win2000_li 提问时间：2011-3-25 22:47 /

兄弟用ST LIB3.40的库, SMT32F103RET6.
DAC+DMA的例子,不知道为什么就是不对.
没有波形出来.............
请问这是为什么啊??????????????
请大家指点一二..................

00001 /**
00002 ******************************************************************************
00003 * @file    DAC/OneChannelDMA_Escalator/main.c
00004 * @author MCD Application Team
00005 * @version V3.4.0
00006 * @date    10/15/2010
00007 * @brief   Main program body.
00008 ******************************************************************************
00009 * @copy
00010 *
00011 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
00012 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
00013 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
00014 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
00015 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
00016 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
00017 *
00018 * © COPYRIGHT 2010 STMicroelectronics

00019 */
00020
00021 /* Includes ------------------------------------------------------------------*/
00022 #include "[url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/stm32f10x_8h.html]stm32f10x.h[/url]"
00023
00024 /** @addtogroup STM32F10x_StdPeriph_Examples
00025 * @{
00026 */
00027
00028 /** @addtogroup DAC_OneChannelDMA_Escalator
00029 * @{
00030 */
00031
00032 /* Private typedef -----------------------------------------------------------*/
00033 /* Private define ------------------------------------------------------------*/
[url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/group__DAC__OneChannelDMA__Escalator.html#ga4e2356d33008f4f2f62ea7192a837b20]00034[/url] #define DAC_DHR8R1_Address 0x40007410
00035
00036 /* Init Structure definition */
[url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/structDAC__InitTypeDef.html]DAC_InitTypeDef[/url] [url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/group__DAC__DualModeDMA__SineWave.html#ga9f54bfd3711229dd98a67fd037b07be1]DAC_InitStructure[/url];
[url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/structDMA__InitTypeDef.html]DMA_InitTypeDef[/url] [url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/group__ADC__3ADCs__DMA.html#gae0d08750e73250f6a9953cd0724658a3]DMA_InitStructure[/url];
00039
00040 /* Private macro -------------------------------------------------------------*/
00041 /* Private variables ---------------------------------------------------------*/
[url=mk

MSITStore:F:\StudyST\STM32\stm32f10x_stdperiph_lib3.40\STM32F10x_StdPeriph_Lib_V3.4.0\stm32f10x_stdperiph_lib_um.chm::/group__DAC__OneChannelDMA__Escalator.html#ga588f3c9b10d203056c55e23e7c6d7ea4]Escalator8bit[/url][6] = {0x0, 0x33, 0x66, 0x99, 0xCC, 0xFF};
00043
00044 /* Private function prototypes -----------------------------------------------*/
00045 void RCC_Configuration(void);
00046 void GPIO_Configuration(void);
00047 void Delay(__IO uint32_t nCount);
00048
00049 /* Private functions ---------------------------------------------------------*/
00050
00051 /**
00052 * @brief   Main program.
00053 * @param None
00054 * @retval None
00055 */
00056 int main(void)
00057 {
00058 /*!< At this stage the microcontroller clock setting is already configured,
00059        this is done through SystemInit() function which is called from startup
00060        file (startup_stm32f10x_xx.s) before to branch to application main.
00061        To reconfigure the default setting of SystemInit() function, refer to
00062        system_stm32f10x.c file
00063      */
00064
00065   /* System Clocks Configuration */
00066   RCC_Configuration();
00067
00068   /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically
00069      connected to the DAC converter. In order to avoid parasitic consumption,
00070      the GPIO pin should be configured in analog */
00071   GPIO_Configuration();
00072
00073   /* TIM6 Configuration */
00074   TIM_PrescalerConfig(TIM6, 0xF, TIM_PSCReloadMode_Update);
00075   TIM_SetAutoreload(TIM6, 0xFF);
00076   /* TIM6 TRGO selection */
00077   TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update);
00078
00079   /* DAC channel1 Configuration */
00080   DAC_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO;
00081   DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
00082   DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
00083   DAC_Init(DAC_Channel_1, &DAC_InitStructure);
00084
00085 #if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL
00086 /* DMA2 channel3 configuration */
00087   DMA_DeInit(DMA2_Channel3);
00088 #else
00089 /* DMA1 channel3 configuration */
00090   DMA_DeInit(DMA1_Channel3);
00091 #endif
00092
00093   DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR8R1_Address;
00094   DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&Escalator8bit;
00095   DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
00096   DMA_InitStructure.DMA_BufferSize = 6;
00097   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
00098   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
00099   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
00100   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
00101   DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
00102   DMA_InitStructure.DMA_Priority = DMA_Priority_High;
00103   DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
00104
00105 #if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL
00106 DMA_Init(DMA2_Channel3, &DMA_InitStructure);
00107   /* Enable DMA2 Channel3 */
00108   DMA_Cmd(DMA2_Channel3, ENABLE);
00109 #else
00110 DMA_Init(DMA1_Channel3, &DMA_InitStructure);
00111   /* Enable DMA1 Channel3 */
00112   DMA_Cmd(