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STM32F0xx Standard Peripherals Firmware Library
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STM32F0xx_StdPeriph_Examples/DAC/DAC_ADC/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file DAC/DAC_ADC/main.c 00004 * @author MCD Application Team 00005 * @version V1.4.0 00006 * @date 24-July-2014 00007 * @brief Main program body 00008 ****************************************************************************** 00009 * @attention 00010 * 00011 * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> 00012 * 00013 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); 00014 * You may not use this file except in compliance with the License. 00015 * You may obtain a copy of the License at: 00016 * 00017 * http://www.st.com/software_license_agreement_liberty_v2 00018 * 00019 * Unless required by applicable law or agreed to in writing, software 00020 * distributed under the License is distributed on an "AS IS" BASIS, 00021 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00022 * See the License for the specific language governing permissions and 00023 * limitations under the License. 00024 * 00025 ****************************************************************************** 00026 */ 00027 00028 /* Includes ------------------------------------------------------------------*/ 00029 #include "main.h" 00030 00031 /** @addtogroup STM32F0xx_StdPeriph_Examples 00032 * @{ 00033 */ 00034 00035 /** @addtogroup DAC_ADC 00036 * @{ 00037 */ 00038 00039 /* Private typedef -----------------------------------------------------------*/ 00040 /* Private define ------------------------------------------------------------*/ 00041 /* Private macro -------------------------------------------------------------*/ 00042 /* Private variables ---------------------------------------------------------*/ 00043 /* Private function prototypes -----------------------------------------------*/ 00044 static void ADC_Config(void); 00045 static void DAC_Config(void); 00046 00047 /* Private functions ---------------------------------------------------------*/ 00048 00049 /** 00050 * @brief Main program. 00051 * @param None 00052 * @retval None 00053 */ 00054 int main(void) 00055 { 00056 /*!< At this stage the microcontroller clock setting is already configured, 00057 this is done through SystemInit() function which is called from startup 00058 file (startup_stm32f0xx.s) before to branch to application main. 00059 To reconfigure the default setting of SystemInit() function, refer to 00060 system_stm32f0xx.c file 00061 */ 00062 00063 /* DAC configuration ---------------------------------------------*/ 00064 DAC_Config(); 00065 00066 /* ADC configuration ---------------------------------------------*/ 00067 ADC_Config(); 00068 00069 /* Infinite loop */ 00070 while (1) 00071 { 00072 } 00073 } 00074 00075 /** 00076 * @brief Configures the DAC channel 1 with output buffer enabled. 00077 * @param None 00078 * @retval None 00079 */ 00080 static void DAC_Config(void) 00081 { 00082 DAC_InitTypeDef DAC_InitStructure; 00083 GPIO_InitTypeDef GPIO_InitStructure; 00084 00085 /* Enable GPIOA clock */ 00086 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); 00087 00088 /* Configure PA.04 (DAC_OUT1) in analog mode -------------------------*/ 00089 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN; 00090 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; 00091 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; 00092 GPIO_Init(GPIOA, &GPIO_InitStructure); 00093 00094 /* Enable DAC clock */ 00095 RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); 00096 00097 /* DAC channel1 Configuration */ 00098 DAC_InitStructure.DAC_Trigger = DAC_Trigger_None; 00099 DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None; 00100 DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0; 00101 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable; 00102 00103 /* DAC Channel1 Init */ 00104 DAC_Init(DAC_Channel_1, &DAC_InitStructure); 00105 00106 /* Enable DAC Channel1 */ 00107 DAC_Cmd(DAC_Channel_1, ENABLE); 00108 } 00109 00110 /** 00111 * @brief ADC1 channel configuration 00112 * @param None 00113 * @retval None 00114 */ 00115 static void ADC_Config(void) 00116 { 00117 ADC_InitTypeDef ADC_InitStructure; 00118 GPIO_InitTypeDef GPIO_InitStructure; 00119 NVIC_InitTypeDef NVIC_InitStructure; 00120 00121 /* GPIOC Periph clock enable */ 00122 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE); 00123 00124 /* ADC1 Periph clock enable */ 00125 RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); 00126 00127 /* Configure ADC Channel11 as analog input */ 00128 #ifdef USE_STM320518_EVAL 00129 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 ; 00130 #else 00131 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 ;/* Configure ADC Channel10 as analog input */ 00132 #endif /* USE_STM320518_EVAL */ 00133 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN; 00134 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ; 00135 GPIO_Init(GPIOC, &GPIO_InitStructure); 00136 00137 /* ADC1 DeInit */ 00138 ADC_DeInit(ADC1); 00139 ADC_StructInit(&ADC_InitStructure); 00140 00141 /* Configure the ADC1 in continous mode withe a resolution equal to 12 bits */ 00142 ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b; 00143 ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; 00144 ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None; 00145 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; 00146 ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward; 00147 ADC_Init(ADC1, &ADC_InitStructure); 00148 00149 /* Convert the ADC1 Channel 11 with 239.5 Cycles as sampling time */ 00150 #ifdef USE_STM320518_EVAL 00151 ADC_ChannelConfig(ADC1, ADC_Channel_11 , ADC_SampleTime_239_5Cycles); 00152 #else 00153 ADC_ChannelConfig(ADC1, ADC_Channel_10 , ADC_SampleTime_239_5Cycles); 00154 #endif /* USE_STM320518_EVAL */ 00155 00156 /* Enable End Of Conversion interupt */ 00157 ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE); 00158 00159 /* Configure and enable ADC1 interrupt */ 00160 NVIC_InitStructure.NVIC_IRQChannel = ADC1_COMP_IRQn; 00161 NVIC_InitStructure.NVIC_IRQChannelPriority = 0; 00162 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 00163 NVIC_Init(&NVIC_InitStructure); 00164 00165 /* Enable the ADC peripheral */ 00166 ADC_Cmd(ADC1, ENABLE); 00167 00168 /* Wait the ADRDY flag */ 00169 while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADRDY)); 00170 00171 /* ADC1 Start Conversion */ 00172 ADC_StartOfConversion(ADC1); 00173 } 00174 00175 #ifdef USE_FULL_ASSERT 00176 00177 /** 00178 * @brief Reports the name of the source file and the source line number 00179 * where the assert_param error has occurred. 00180 * @param file: pointer to the source file name 00181 * @param line: assert_param error line source number 00182 * @retval None 00183 */ 00184 void assert_failed(uint8_t* file, uint32_t line) 00185 { 00186 /* User can add his own implementation to report the file name and line number, 00187 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00188 00189 /* Infinite loop */ 00190 while (1) 00191 { 00192 } 00193 } 00194 #endif 00195 00196 /** 00197 * @} 00198 */ 00199 00200 /** 00201 * @} 00202 */ 00203 00204 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/