From 32e57dac2e61e79b029593eb4d34d727bcc10678 Mon Sep 17 00:00:00 2001 From: iperry Date: Thu, 17 Dec 2009 02:37:07 +0000 Subject: Initial commit of library code, moved from leaftest repo git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123 --- .../examples/DAC/TwoChannels_TriangleWave/main.c | 232 +++++++++++++++++++++ 1 file changed, 232 insertions(+) create mode 100755 src/stm32lib/examples/DAC/TwoChannels_TriangleWave/main.c (limited to 'src/stm32lib/examples/DAC/TwoChannels_TriangleWave/main.c') diff --git a/src/stm32lib/examples/DAC/TwoChannels_TriangleWave/main.c b/src/stm32lib/examples/DAC/TwoChannels_TriangleWave/main.c new file mode 100755 index 0000000..9a45e6d --- /dev/null +++ b/src/stm32lib/examples/DAC/TwoChannels_TriangleWave/main.c @@ -0,0 +1,232 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : main.c +* Author : MCD Application Team +* Version : V2.0.1 +* Date : 06/13/2008 +* Description : Main program body. +******************************************************************************** +* 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. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_lib.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Init Structure definition */ +DAC_InitTypeDef DAC_InitStructure; +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +ErrorStatus HSEStartUpStatus; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_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 + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* GPIO configuration */ + GPIO_Configuration(); + + /* NVIC Configuration */ + NVIC_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 */ + DAC_Cmd(DAC_Channel_1, ENABLE); + + /* Enable DAC Channel2 */ + 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) + { + } +} + +/******************************************************************************* +* 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) + { + } + } + +/* Enable peripheral clocks --------------------------------------------------*/ + /* AFIO and GPIOA Periph clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE); + /* DAC Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); + /* TIM2 Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); +} + +/******************************************************************************* +* Function Name : GPIO_Configuration +* Description : Configures the different GPIO ports. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Configure DAC channe1 and DAC channel2 outputs pins */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; + GPIO_Init(GPIOA, &GPIO_InitStructure); +} + +/******************************************************************************* +* 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 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3