1 | /* Includes ------------------------------------------------------------------*/
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2 | #include "main.h"
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3 | #include "math.h"
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4 |
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5 | /* Private variables ---------------------------------------------------------*/
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6 | DAC_HandleTypeDef hdac;
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7 | DMA_HandleTypeDef hdma_dac_ch1;
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8 |
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9 | TIM_HandleTypeDef htim6;
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10 |
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11 | /* USER CODE BEGIN PV */
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12 | float pi = 3.14159265359;
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13 | uint16_t dacVal [1024];
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14 | int i;
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15 |
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16 | /* USER CODE END PV */
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17 |
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18 | /* Private function prototypes -----------------------------------------------*/
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19 | void SystemClock_Config(void);
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20 | static void MX_GPIO_Init(void);
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21 | static void MX_DMA_Init(void);
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22 | static void MX_DAC_Init(void);
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23 | static void MX_TIM6_Init(void);
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24 |
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25 | int main(void)
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26 | {
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27 | for(i=0; i<= 1023; i++)
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28 | {
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29 | dacVal[i]= 2048*(sin(i*2*pi/1023)+1);
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30 | }
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31 |
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32 | HAL_Init();
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33 |
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34 | /* Configure the system clock */
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35 | SystemClock_Config();
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36 |
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37 | /* Initialize all configured peripherals */
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38 | MX_GPIO_Init();
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39 | MX_DMA_Init();
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40 | MX_DAC_Init();
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41 | MX_TIM6_Init();
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42 |
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43 | /* USER CODE BEGIN 2 */
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44 | HAL_TIM_Base_Start(&htim6);
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45 | HAL_DAC_Start(&hdac,DAC_CHANNEL_1);
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46 | HAL_DAC_Start_DMA(&hdac, DAC_CHANNEL_1, (uint32_t*)dacVal, 1024, DAC_ALIGN_12B_R);
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47 | /* USER CODE END 2 */
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48 |
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49 | while (1)
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50 | {
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51 |
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52 | }
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53 | }
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54 |
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55 | void SystemClock_Config(void)
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56 | {
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57 | RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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58 | RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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59 |
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60 | /**Configure the main internal regulator output voltage
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61 | */
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62 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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63 | /**Initializes the CPU, AHB and APB busses clocks
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64 | */
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65 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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66 | RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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67 | RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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68 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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69 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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70 | {
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71 | Error_Handler();
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72 | }
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73 | /**Initializes the CPU, AHB and APB busses clocks
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74 | */
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75 | RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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76 | |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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77 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
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78 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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79 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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80 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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81 |
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82 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
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83 | {
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84 | Error_Handler();
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85 | }
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86 | }
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87 |
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88 | static void MX_DAC_Init(void)
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89 | {
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90 |
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91 | DAC_ChannelConfTypeDef sConfig = {0};
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92 |
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93 | hdac.Instance = DAC;
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94 | if (HAL_DAC_Init(&hdac) != HAL_OK)
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95 | {
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96 | Error_Handler();
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97 | }
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98 |
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99 | /**DAC channel OUT1 config*/
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100 | sConfig.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
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101 | sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
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102 | if (HAL_DAC_ConfigChannel(&hdac, &sConfig, DAC_CHANNEL_1) != HAL_OK)
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103 | {
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104 | Error_Handler();
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105 | }
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106 | }
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107 |
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108 | static void MX_TIM6_Init(void)
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109 | {
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110 | TIM_MasterConfigTypeDef sMasterConfig = {0};
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111 |
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112 | /* USER CODE END TIM6_Init 1 */
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113 | htim6.Instance = TIM6;
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114 | htim6.Init.Prescaler = 0;
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115 | htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
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116 | htim6.Init.Period = 10;
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117 | htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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118 | if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
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119 | {
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120 | Error_Handler();
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121 | }
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122 | sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
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123 | sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
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124 | if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
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125 | {
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126 | Error_Handler();
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127 | }
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128 | }
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129 |
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130 | static void MX_DMA_Init(void)
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131 | {
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132 | /* DMA controller clock enable */
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133 | __HAL_RCC_DMA1_CLK_ENABLE();
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134 |
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135 | /* DMA interrupt init */
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136 | /* DMA1_Channel2_3_IRQn interrupt configuration */
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137 | HAL_NVIC_SetPriority(DMA1_Channel2_3_IRQn, 0, 0);
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138 | HAL_NVIC_EnableIRQ(DMA1_Channel2_3_IRQn);
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139 |
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140 | }
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141 |
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142 | static void MX_GPIO_Init(void)
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143 | {
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144 | /* GPIO Ports Clock Enable */
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145 | __HAL_RCC_GPIOA_CLK_ENABLE();
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146 |
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147 | }
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148 |
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149 | void Error_Handler(void)
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150 | {
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151 | /* USER CODE BEGIN Error_Handler_Debug */
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152 | /* User can add his own implementation to report the HAL error return state */
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153 |
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154 | /* USER CODE END Error_Handler_Debug */
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155 | }
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