1 files changed, 83 insertions, 0 deletions
diff --git a/project_starter_files/Core/Src/dac.c b/project_starter_files/Core/Src/dac.c
new file mode 100644
index 0000000..e03f9ce
--- /dev/null
+++ b/project_starter_files/Core/Src/dac.c
@@ -0,0 +1,83 @@
+/*
+ * dac.c
+ *
+ *  Created on: Apr 13, 2022
+ *      Author: bruce
+ */
+
+#include "dac.h"
+#include "main.h"
+#include "stm32l4xx.h"
+
+DAC_HandleTypeDef hdac1;
+
+/**
+* @brief DAC MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hdac: DAC handle pointer
+* @retval None
+*/
+void HAL_DAC_MspInit(DAC_HandleTypeDef* hdac)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hdac->Instance==DAC1)
+  {
+    __HAL_RCC_DAC1_CLK_ENABLE();
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    GPIO_InitStruct.Pin = GPIO_PIN_4;
+    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+  }
+
+}
+
+/**
+* @brief DAC MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hdac: DAC handle pointer
+* @retval None
+*/
+void HAL_DAC_MspDeInit(DAC_HandleTypeDef* hdac)
+{
+  if(hdac->Instance==DAC1)
+  {
+    __HAL_RCC_DAC1_CLK_DISABLE();
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_4);
+  }
+
+}
+
+void DAC_Init () {
+	DAC_ChannelConfTypeDef sConfig = {0};
+
+  /** DAC Initialization
+  */
+  hdac1.Instance = DAC1;
+  if (HAL_DAC_Init(&hdac1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  /** DAC channel OUT1 config
+  */
+  sConfig.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_DISABLE;
+  sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
+  sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
+  sConfig.DAC_ConnectOnChipPeripheral = DAC_CHIPCONNECT_DISABLE;
+  sConfig.DAC_UserTrimming = DAC_TRIMMING_FACTORY;
+
+  if (HAL_DAC_ConfigChannel(&hdac1, &sConfig, DAC_CHANNEL_1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+}
+
+void DAC_Start () {
+	HAL_DAC_Start (&hdac1, DAC_CHANNEL_1);
+}
+
+void DAC_Set_Value (uint32_t value) {
+	HAL_DAC_SetValue (&hdac1, DAC_CHANNEL_1, DAC_ALIGN_12B_R, value);
+}