diff options
Diffstat (limited to 'src/stm32lib/examples/DAC/DualModeDMA_SineWave/main.c')
| -rwxr-xr-x | src/stm32lib/examples/DAC/DualModeDMA_SineWave/main.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/stm32lib/examples/DAC/DualModeDMA_SineWave/main.c b/src/stm32lib/examples/DAC/DualModeDMA_SineWave/main.c new file mode 100755 index 0000000..8502183 --- /dev/null +++ b/src/stm32lib/examples/DAC/DualModeDMA_SineWave/main.c @@ -0,0 +1,204 @@ +/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
+* File Name : main.c
+* Author : MCD Application Team
+* Version : V1.0
+* Date : 10/08/2007
+* Description : Main program body
+********************************************************************************
+* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_lib.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+GPIO_InitTypeDef GPIO_InitStructure;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void NVIC_Configuration(void);
+void Delay(vu32 nCount);
+
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name : main
+* Description : Main program.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+int main(void)
+{
+#ifdef DEBUG
+ debug();
+#endif
+
+ /* Configure the system clocks */
+ RCC_Configuration();
+
+ /* NVIC Configuration */
+ NVIC_Configuration();
+
+ /* Enable GPIOC clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
+
+ /* Configure PC.12 as Output push-pull */
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+ /* Bit Banged PWM Handler Vars*/
+ int thresh = 128;
+ int count = 0;
+ vu32 fadeRateCount = 0;
+ const vu32 fadeRate = 0xFFFF;
+
+ while (1)
+ {
+ /* Main Pwm Handling for a given thresh */
+ if (count < thresh)
+ {
+ GPIO_SetBits(GPIOC,GPIO_Pin_12);
+ } else
+ {
+ GPIO_ResetBits(GPIOC,GPIO_Pin_12);
+ }
+
+ count++;
+
+ if (count == 255)
+ {
+ fadeRateCount++;
+
+ if (fadeRateCount == fadeRate)
+ {
+ thresh += 5;
+ fadeRateCount = 0;
+ }
+ }
+
+ /* Insert delay */
+ Delay(0xAFFFF);
+ }
+}
+
+/*******************************************************************************
+* Function Name : RCC_Configuration
+* Description : Configures the different system clocks.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void RCC_Configuration(void)
+{
+ /* RCC system reset(for debug purpose) */
+ RCC_DeInit();
+
+ /* Enable HSE */
+ RCC_HSEConfig(RCC_HSE_ON);
+
+ /* Wait till HSE is ready */
+ HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+ if(HSEStartUpStatus == SUCCESS)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
+
+ /* Flash 2 wait state */
+ FLASH_SetLatency(FLASH_Latency_2);
+
+ /* HCLK = SYSCLK */
+ RCC_HCLKConfig(RCC_SYSCLK_Div1);
+
+ /* PCLK2 = HCLK */
+ RCC_PCLK2Config(RCC_HCLK_Div1);
+
+ /* PCLK1 = HCLK/2 */
+ RCC_PCLK1Config(RCC_HCLK_Div2);
+
+ /* PLLCLK = 8MHz * 9 = 72 MHz */
+ RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+ /* Enable PLL */
+ RCC_PLLCmd(ENABLE);
+
+ /* Wait till PLL is ready */
+ while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+ /* Wait till PLL is used as system clock source */
+ while(RCC_GetSYSCLKSource() != 0x08)
+ {
+ }
+ }
+}
+
+/*******************************************************************************
+* Function Name : NVIC_Configuration
+* Description : Configures Vector Table base location.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void NVIC_Configuration(void)
+{
+#ifdef VECT_TAB_RAM
+ /* Set the Vector Table base location at 0x20000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
+#else /* VECT_TAB_FLASH */
+ /* Set the Vector Table base location at 0x08000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
+#endif
+}
+
+/*******************************************************************************
+* Function Name : Delay
+* Description : Inserts a delay time.
+* Input : nCount: specifies the delay time length.
+* Output : None
+* Return : None
+*******************************************************************************/
+void Delay(vu32 nCount)
+{
+ for(; nCount != 0; nCount--);
+}
+
+#ifdef DEBUG
+/*******************************************************************************
+* Function Name : assert_failed
+* Description : Reports the name of the source file and the source line number
+* where the assert_param error has occurred.
+* Input : - file: pointer to the source file name
+* - line: assert_param error line source number
+* Output : None
+* Return : None
+*******************************************************************************/
+void assert_failed(u8* file, u32 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 2007 STMicroelectronics *****END OF FILE****/
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