Richard Vasquez / DMA_RAM_DAC

won't compile

main.c@0:b079fa4ed182, 2016-11-02 (annotated)

Committer:
richardv
Date:
Wed Nov 02 23:50:52 2016 +0000
Revision:
0:b079fa4ed182
DMA RAM DAC

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richardv 0:b079fa4ed182 1 /**
richardv 0:b079fa4ed182 2 ******************************************************************************
richardv 0:b079fa4ed182 3 * @file DMA_RAM_DAC/main.c
richardv 0:b079fa4ed182 4 * @author MCD Application Team
richardv 0:b079fa4ed182 5 * @version V1.0.0
richardv 0:b079fa4ed182 6 * @date 20-June-2014
richardv 0:b079fa4ed182 7 * @brief Main program body
richardv 0:b079fa4ed182 8 ******************************************************************************
richardv 0:b079fa4ed182 9 * @attention
richardv 0:b079fa4ed182 10 *
richardv 0:b079fa4ed182 11 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
richardv 0:b079fa4ed182 12 *
richardv 0:b079fa4ed182 13 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
richardv 0:b079fa4ed182 14 * You may not use this file except in compliance with the License.
richardv 0:b079fa4ed182 15 * You may obtain a copy of the License at:
richardv 0:b079fa4ed182 16 *
richardv 0:b079fa4ed182 17 * http://www.st.com/software_license_agreement_liberty_v2
richardv 0:b079fa4ed182 18 *
richardv 0:b079fa4ed182 19 * Unless required by applicable law or agreed to in writing, software
richardv 0:b079fa4ed182 20 * distributed under the License is distributed on an "AS IS" BASIS,
richardv 0:b079fa4ed182 21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
richardv 0:b079fa4ed182 22 * See the License for the specific language governing permissions and
richardv 0:b079fa4ed182 23 * limitations under the License.
richardv 0:b079fa4ed182 24 *
richardv 0:b079fa4ed182 25 ******************************************************************************
richardv 0:b079fa4ed182 26 */
richardv 0:b079fa4ed182 27
richardv 0:b079fa4ed182 28 /* Includes ------------------------------------------------------------------*/
richardv 0:b079fa4ed182 29 #include "main.h"
richardv 0:b079fa4ed182 30
richardv 0:b079fa4ed182 31 /** @addtogroup STM32F3348_DISCOVERY_Examples
richardv 0:b079fa4ed182 32 * @{
richardv 0:b079fa4ed182 33 */
richardv 0:b079fa4ed182 34
richardv 0:b079fa4ed182 35 /** @addtogroup DMA_RAM_DAC
richardv 0:b079fa4ed182 36 * @{
richardv 0:b079fa4ed182 37 */
richardv 0:b079fa4ed182 38
richardv 0:b079fa4ed182 39 /* Private typedef -----------------------------------------------------------*/
richardv 0:b079fa4ed182 40 /* Private define ------------------------------------------------------------*/
richardv 0:b079fa4ed182 41 /* Private macro -------------------------------------------------------------*/
richardv 0:b079fa4ed182 42 /* Private variables ---------------------------------------------------------*/
richardv 0:b079fa4ed182 43 uint32_t DualSine12bit[32];
richardv 0:b079fa4ed182 44
richardv 0:b079fa4ed182 45 /* Private function prototypes -----------------------------------------------*/
richardv 0:b079fa4ed182 46 static void TIM_Config(void);
richardv 0:b079fa4ed182 47 static void DAC_Config(void);
richardv 0:b079fa4ed182 48 static void DMA_Config(void);
richardv 0:b079fa4ed182 49
richardv 0:b079fa4ed182 50 /* Private functions ---------------------------------------------------------*/
richardv 0:b079fa4ed182 51
richardv 0:b079fa4ed182 52 /**
richardv 0:b079fa4ed182 53 * @brief Main program.
richardv 0:b079fa4ed182 54 * @param None
richardv 0:b079fa4ed182 55 * @retval None
richardv 0:b079fa4ed182 56 */
richardv 0:b079fa4ed182 57 int main(void)
richardv 0:b079fa4ed182 58 {
richardv 0:b079fa4ed182 59 uint16_t Sine12bit[32] = {
richardv 0:b079fa4ed182 60 2047, 2447, 2831, 3185, 3498, 3750, 3939, 4056, 4095, 4056,
richardv 0:b079fa4ed182 61 3939, 3750, 3495, 3185, 2831, 2447, 2047, 1647, 1263, 909,
richardv 0:b079fa4ed182 62 599, 344, 155, 38, 0, 38, 155, 344, 599, 909, 1263, 1647};
richardv 0:b079fa4ed182 63 uint32_t Index = 0;
richardv 0:b079fa4ed182 64
richardv 0:b079fa4ed182 65 /*!< At this stage the microcontroller clock setting is already configured,
richardv 0:b079fa4ed182 66 this is done through SystemInit() function which is called from startup
richardv 0:b079fa4ed182 67 file (startup_stm32f334x8.s) before to branch to application main.
richardv 0:b079fa4ed182 68 To reconfigure the default setting of SystemInit() function, refer to
richardv 0:b079fa4ed182 69 system_stm32f30x.c file
richardv 0:b079fa4ed182 70 */
richardv 0:b079fa4ed182 71
richardv 0:b079fa4ed182 72 /* Fill DualSine12bit table */
richardv 0:b079fa4ed182 73 for (Index = 0; Index < 32; Index++)
richardv 0:b079fa4ed182 74 {
richardv 0:b079fa4ed182 75 DualSine12bit[Index] = (Sine12bit[Index] << 16) + (Sine12bit[Index]);
richardv 0:b079fa4ed182 76 }
richardv 0:b079fa4ed182 77
richardv 0:b079fa4ed182 78 /* DMA1 channel3 configuration: DualSine12bit is used as memory base address */
richardv 0:b079fa4ed182 79 DMA_Config();
richardv 0:b079fa4ed182 80
richardv 0:b079fa4ed182 81 /* DAC configuration ------------------------------------------------------*/
richardv 0:b079fa4ed182 82 DAC_Config();
richardv 0:b079fa4ed182 83
richardv 0:b079fa4ed182 84 /* TIM2 configuration ------------------------------------------------------*/
richardv 0:b079fa4ed182 85 TIM_Config();
richardv 0:b079fa4ed182 86
richardv 0:b079fa4ed182 87 while (1)
richardv 0:b079fa4ed182 88 {
richardv 0:b079fa4ed182 89 }
richardv 0:b079fa4ed182 90 }
richardv 0:b079fa4ed182 91
richardv 0:b079fa4ed182 92 /**
richardv 0:b079fa4ed182 93 * @brief Configures the TIM2
richardv 0:b079fa4ed182 94 * @param None
richardv 0:b079fa4ed182 95 * @retval None
richardv 0:b079fa4ed182 96 */
richardv 0:b079fa4ed182 97 static void TIM_Config(void)
richardv 0:b079fa4ed182 98 {
richardv 0:b079fa4ed182 99 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
richardv 0:b079fa4ed182 100
richardv 0:b079fa4ed182 101 /* TIM2 Periph clock enable */
richardv 0:b079fa4ed182 102 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
richardv 0:b079fa4ed182 103
richardv 0:b079fa4ed182 104 /* Time base configuration */
richardv 0:b079fa4ed182 105 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
richardv 0:b079fa4ed182 106 TIM_TimeBaseStructure.TIM_Period = 0xFF;
richardv 0:b079fa4ed182 107 TIM_TimeBaseStructure.TIM_Prescaler = 0x0;
richardv 0:b079fa4ed182 108 TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
richardv 0:b079fa4ed182 109 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
richardv 0:b079fa4ed182 110 TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
richardv 0:b079fa4ed182 111
richardv 0:b079fa4ed182 112 /* TIM2 TRGO selection: update event is selected as trigger for DAC */
richardv 0:b079fa4ed182 113 TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update);
richardv 0:b079fa4ed182 114
richardv 0:b079fa4ed182 115 /* TIM2 enable counter */
richardv 0:b079fa4ed182 116 TIM_Cmd(TIM2, ENABLE);
richardv 0:b079fa4ed182 117 }
richardv 0:b079fa4ed182 118
richardv 0:b079fa4ed182 119 /**
richardv 0:b079fa4ed182 120 * @brief Configures DAC channel 1 and channel 2
richardv 0:b079fa4ed182 121 * @param None
richardv 0:b079fa4ed182 122 * @retval None
richardv 0:b079fa4ed182 123 */
richardv 0:b079fa4ed182 124 static void DAC_Config(void)
richardv 0:b079fa4ed182 125 {
richardv 0:b079fa4ed182 126 DAC_InitTypeDef DAC_InitStructure;
richardv 0:b079fa4ed182 127 GPIO_InitTypeDef GPIO_InitStructure;
richardv 0:b079fa4ed182 128
richardv 0:b079fa4ed182 129 /* DAC Periph clock enable ----------------------------------------*/
richardv 0:b079fa4ed182 130 RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
richardv 0:b079fa4ed182 131
richardv 0:b079fa4ed182 132 /* SYSCFG Periph clock enable -------------------------------------*/
richardv 0:b079fa4ed182 133 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
richardv 0:b079fa4ed182 134
richardv 0:b079fa4ed182 135 /* Enable GPIOA Periph clock --------------------------------------*/
richardv 0:b079fa4ed182 136 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
richardv 0:b079fa4ed182 137
richardv 0:b079fa4ed182 138 /* Configure PA.04 (DAC1_OUT1), PA.05 (DAC1_OUT2) as analog */
richardv 0:b079fa4ed182 139 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
richardv 0:b079fa4ed182 140 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
richardv 0:b079fa4ed182 141 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
richardv 0:b079fa4ed182 142 GPIO_Init(GPIOA, &GPIO_InitStructure);
richardv 0:b079fa4ed182 143
richardv 0:b079fa4ed182 144 /* Remap DAC1 Cahnnel1 DMA requests from DMA2 channel 3 to DMA1 channel 3 */
richardv 0:b079fa4ed182 145 SYSCFG_DMAChannelRemapConfig(SYSCFG_DMARemap_TIM6DAC1Ch1, ENABLE);
richardv 0:b079fa4ed182 146
richardv 0:b079fa4ed182 147 /* DAC deinitialize */
richardv 0:b079fa4ed182 148 DAC_DeInit(DAC1);
richardv 0:b079fa4ed182 149
richardv 0:b079fa4ed182 150 /* Fill DAC InitStructure */
richardv 0:b079fa4ed182 151 DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO;
richardv 0:b079fa4ed182 152 DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
richardv 0:b079fa4ed182 153 DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bits2_0;
richardv 0:b079fa4ed182 154 DAC_InitStructure.DAC_Buffer_Switch = DAC_BufferSwitch_Enable;
richardv 0:b079fa4ed182 155
richardv 0:b079fa4ed182 156 /* DAC channel1 Configuration */
richardv 0:b079fa4ed182 157 DAC_Init(DAC1, DAC_Channel_1, &DAC_InitStructure);
richardv 0:b079fa4ed182 158
richardv 0:b079fa4ed182 159 /* DAC channel2 Configuration */
richardv 0:b079fa4ed182 160 DAC_Init(DAC1, DAC_Channel_2, &DAC_InitStructure);
richardv 0:b079fa4ed182 161
richardv 0:b079fa4ed182 162 /* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is
richardv 0:b079fa4ed182 163 automatically connected to the DAC converter. */
richardv 0:b079fa4ed182 164 DAC_Cmd(DAC1, DAC_Channel_1, ENABLE);
richardv 0:b079fa4ed182 165
richardv 0:b079fa4ed182 166 /* Enable DAC Channel2: Once the DAC channel2 is enabled, PA.05 is
richardv 0:b079fa4ed182 167 automatically connected to the DAC converter. */
richardv 0:b079fa4ed182 168 DAC_Cmd(DAC1, DAC_Channel_2, ENABLE);
richardv 0:b079fa4ed182 169
richardv 0:b079fa4ed182 170 /* Enable DMA for DAC Channel1 */
richardv 0:b079fa4ed182 171 DAC_DMACmd(DAC1, DAC_Channel_1, ENABLE);
richardv 0:b079fa4ed182 172 }
richardv 0:b079fa4ed182 173
richardv 0:b079fa4ed182 174 /**
richardv 0:b079fa4ed182 175 * @brief Configures DMA1 channel3
richardv 0:b079fa4ed182 176 * @param None
richardv 0:b079fa4ed182 177 * @retval None
richardv 0:b079fa4ed182 178 */
richardv 0:b079fa4ed182 179 static void DMA_Config(void)
richardv 0:b079fa4ed182 180 {
richardv 0:b079fa4ed182 181 DMA_InitTypeDef DMA_InitStructure;
richardv 0:b079fa4ed182 182
richardv 0:b079fa4ed182 183 /* Enable DMA1 clock -------------------------------------------------------*/
richardv 0:b079fa4ed182 184 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
richardv 0:b079fa4ed182 185
richardv 0:b079fa4ed182 186 DMA_DeInit(DMA1_Channel3);
richardv 0:b079fa4ed182 187 DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12RD_Address;
richardv 0:b079fa4ed182 188 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&DualSine12bit;
richardv 0:b079fa4ed182 189 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
richardv 0:b079fa4ed182 190 DMA_InitStructure.DMA_BufferSize = 32;
richardv 0:b079fa4ed182 191 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
richardv 0:b079fa4ed182 192 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
richardv 0:b079fa4ed182 193 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
richardv 0:b079fa4ed182 194 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
richardv 0:b079fa4ed182 195 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
richardv 0:b079fa4ed182 196 DMA_InitStructure.DMA_Priority = DMA_Priority_High;
richardv 0:b079fa4ed182 197 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
richardv 0:b079fa4ed182 198 DMA_Init(DMA1_Channel3, &DMA_InitStructure);
richardv 0:b079fa4ed182 199
richardv 0:b079fa4ed182 200 /* Enable DMA1 Channel3 */
richardv 0:b079fa4ed182 201 DMA_Cmd(DMA1_Channel3, ENABLE);
richardv 0:b079fa4ed182 202 }
richardv 0:b079fa4ed182 203 #ifdef USE_FULL_ASSERT
richardv 0:b079fa4ed182 204
richardv 0:b079fa4ed182 205 /**
richardv 0:b079fa4ed182 206 * @brief Reports the name of the source file and the source line number
richardv 0:b079fa4ed182 207 * where the assert_param error has occurred.
richardv 0:b079fa4ed182 208 * @param file: pointer to the source file name
richardv 0:b079fa4ed182 209 * @param line: assert_param error line source number
richardv 0:b079fa4ed182 210 * @retval None
richardv 0:b079fa4ed182 211 */
richardv 0:b079fa4ed182 212 void assert_failed(uint8_t* file, uint32_t line)
richardv 0:b079fa4ed182 213 {
richardv 0:b079fa4ed182 214 /* User can add his own implementation to report the file name and line number,
richardv 0:b079fa4ed182 215 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
richardv 0:b079fa4ed182 216
richardv 0:b079fa4ed182 217 /* Infinite loop */
richardv 0:b079fa4ed182 218 while (1)
richardv 0:b079fa4ed182 219 {
richardv 0:b079fa4ed182 220 }
richardv 0:b079fa4ed182 221 }
richardv 0:b079fa4ed182 222 #endif
richardv 0:b079fa4ed182 223
richardv 0:b079fa4ed182 224 /**
richardv 0:b079fa4ed182 225 * @}
richardv 0:b079fa4ed182 226 */
richardv 0:b079fa4ed182 227
richardv 0:b079fa4ed182 228 /**
richardv 0:b079fa4ed182 229 * @}
richardv 0:b079fa4ed182 230 */
richardv 0:b079fa4ed182 231
richardv 0:b079fa4ed182 232 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/