/**
******************************************************************************
* @file DAC/DualModeDMA_SineWave/main.c
* @author MCD Application Team
* @version V3.0.0
* @date 04/06/2009
* @brief Main program body.
******************************************************************************
* @copy
*
* 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 2009 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "LED.h"
/** @addtogroup StdPeriph_Examples
* @{
*/
/** @addtogroup DAC_DualModeDMA_SineWave
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define DAC_DHR12R1 0x40007408
#define DAC_DHR12R2 0x40007414
#define Sin_Out_500Hz 0x8B6
#define Sin_Out_1KHz 0x456
#define Sin_Out_2KHz 0x235
#define Sin_Out_3KHz 0x17A
#define Sin_Out_4KHz 0x119
#define Sin_Out_5KHz 0xE0
#define Sin_Out_10KHz 0x6F
#define Sin_Out_15KHz 0x4A
/* Init Structure definition */
DAC_InitTypeDef DAC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
/* Private macro -------------------------------------------------------------*/
/* Private variables --------------------------------------------------------- */
const uint16_t Sine12bit[258] = { 2048, 2098, 2148, 2198, 2248, 2298, 2348, 2398, 2447, 2496,
2545, 2594, 2642, 2690, 2737, 2785, 2831, 2877, 2923, 2968,
3013, 3057, 3100, 3143, 3185, 3227, 3267, 3307, 3347, 3385,
3423, 3460, 3496, 3531, 3565, 3598, 3631, 3662, 3692, 3722,
3750, 3778, 3804, 3829, 3854, 3877, 3899, 3920, 3940, 3958,
3976, 3992, 4007, 4021, 4034, 4046, 4056, 4065, 4073, 4080,
4086, 4090, 4093, 4095, 4095, 4095, 4093, 4090, 4086, 4080,
4073, 4065, 4056, 4046, 4034, 4021, 4007, 3992, 3976, 3958,
3940, 3920, 3899, 3877, 3854, 3829, 3804, 3778, 3750, 3722,
3692, 3662, 3631, 3598, 3565, 3531, 3496, 3460, 3423, 3385,
3347, 3307, 3267, 3227, 3185, 3143, 3100, 3057, 3013, 2968,
2923, 2877, 2831, 2785, 2737, 2690, 2642, 2594, 2545, 2496,
2447, 2398, 2348, 2298, 2248, 2198, 2148, 2098, 2047, 1997,
1947, 1897, 1847, 1797, 1747, 1697, 1648, 1599, 1550, 1501,
1453, 1405, 1358, 1310, 1264, 1218, 1172, 1127, 1082, 1038,
995, 952, 910, 868, 828, 788, 748, 710, 672, 635,
599, 564, 530, 497, 464, 433, 403, 373, 345, 317,
291, 266, 241, 218, 196, 175, 155, 137, 119, 103,
88, 74, 61, 49, 39, 30, 22, 15, 9, 5,
2, 0, 0, 0, 2, 5, 9, 15, 22, 30,
39, 49, 61, 74, 88, 103, 119, 137, 155, 175,
196, 218, 241, 266, 291, 317, 345, 373, 403, 433,
464, 497, 530, 564, 599, 635, 672, 710, 748, 788,
828, 868, 910, 952, 995, 1038, 1082, 1127, 1172, 1218,
1264, 1310, 1358, 1405, 1453, 1501, 1550, 1599, 1648, 1697,
1747, 1797, 1847, 1897, 1947, 1997 };
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void Delay(__IO uint32_t nCount);
void Delay_500ms()
{
u32 i,j;
for (i=0; i<0x125; i++)
for (j=0;j<3800;j++);
}
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval : None
*/
int main(void)
{
/* 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();
LED_Init();
/* TIM8 Configuration */
/* Time base configuration */
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = Sin_Out_2KHz; //正弦波1频率设置
TIM_TimeBaseStructure.TIM_Prescaler = 0x0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM6, &TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = Sin_Out_3KHz; //正弦波2频率设置
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* TIM8 TRGO selection */
TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update);
TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update);
/* DAC channel1 Configuration */
DAC_StructInit(&DAC_InitStructure);
DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO; //指定DAC1的触发定时器
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_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO; //指定DAC2的触发定时器
DAC_Init(DAC_Channel_2, &DAC_InitStructure);
/* DMA2 channel2 configuration */
DMA_DeInit(DMA2_Channel3);
DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12R1; //指定DMA2通道3的目标地址为DAC1_DHR12R1
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&Sine12bit; //指定DMA的源地址为数组Sine12bit
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_BufferSize = 256;
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_VeryHigh;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA2_Channel3, &DMA_InitStructure);
/* DMA2 channel3 configuration */
DMA_DeInit(DMA2_Channel4);
DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12R2; //指定DMA2通道3的目标地址为DAC2_DHR12R2
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_Init(DMA2_Channel4, &DMA_InitStructure);
/* Enable DMA2 Channel2 */
DMA_Cmd(DMA2_Channel3, ENABLE);
/* Enable DMA2 Channel2 */
DMA_Cmd(DMA2_Channel4, ENABLE);
/* 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 Channel1 */
DAC_DMACmd(DAC_Channel_1, ENABLE);
/* Enable DMA for DAC Channel2 */
DAC_DMACmd(DAC_Channel_2, ENABLE);
/* TIM2 enable counter */
TIM_Cmd(TIM2, ENABLE);
/* TIM2 enable counter */
TIM_Cmd(TIM6, ENABLE);
while (1)
{
LED_R_ON(0);
LED_B_ON(0);
LED_G_ON(1);
Delay_500ms();
LED_R_ON(0);
LED_B_ON(1);
LED_G_ON(0);
Delay_500ms();
LED_R_ON(1);
LED_B_ON(0);
LED_G_ON(0);
Delay_500ms();
LED_R_ON(0);
LED_B_ON(0);
LED_G_ON(0);
Delay_500ms();
}
}
/**
* @brief Configures the different system clocks.
* @param None
* @retval : None
*/
void RCC_Configuration(void)
{
/* Setup the microcontroller system. Initialize the Embedded Flash Interface,
initialize the PLL and update the SystemFrequency variable. */
SystemInit();
/* Enable peripheral clocks --------------------------------------------------*/
/* DMA clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
/* GPIOA Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);
/* DAC Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
/* TIM8 Periph clock enable */
/* TIM8 Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2|RCC_APB1Periph_TIM6, 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_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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 2009 STMicroelectronics *****END OF FILE****/
全部资料51hei下载地址：
TwoChannels_SineWave.7z
(153.99 KB, 下载次数: 23)
|
QQ好友和群
QQ空间
腾讯微博
腾讯朋友
收藏
淘帖
顶
踩
