add dac driver for stm32l4

bsp/stm32/libraries/HAL_Drivers/config/l4/dac_config.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-06-16     thread-liu   first version
+ */
+
+#ifndef __DAC_CONFIG_H__
+#define __DAC_CONFIG_H__
+
+#include <rtthread.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef BSP_USING_DAC1
+#ifndef DAC1_CONFIG
+#define DAC1_CONFIG                                                    \
+    {                                                                  \
+       .Instance                      = DAC1,                          \
+    }
+#endif /* DAC2_CONFIG */
+#endif /* BSP_USING_DAC2 */
+
+#ifdef BSP_USING_DAC2
+#ifndef DAC2_CONFIG
+#define DAC2_CONFIG                                                    \
+    {                                                                  \
+       .Instance                      = DAC2,                          \
+    }
+#endif /* DAC2_CONFIG */
+#endif /* BSP_USING_DAC2 */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __DAC_CONFIG_H__ */

bsp/stm32/libraries/HAL_Drivers/drv_config.h

@@ -73,6 +73,7 @@ extern "C" {
 #include "l4/spi_config.h"
 #include "l4/qspi_config.h"
 #include "l4/adc_config.h"
+#include "l4/dac_config.h"
 #include "l4/tim_config.h"
 #include "l4/sdio_config.h"
 #include "l4/pwm_config.h"

bsp/stm32/libraries/HAL_Drivers/drv_dac.c

@@ -43,7 +43,7 @@ static rt_err_t stm32_dac_enabled(struct rt_dac_device *device, rt_uint32_t chan
     RT_ASSERT(device != RT_NULL);
     stm32_dac_handler = device->parent.user_data;
 
-#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7)
+#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4)
         HAL_DAC_Start(stm32_dac_handler, channel);
 #endif
 
@@ -56,7 +56,7 @@ static rt_err_t stm32_dac_disabled(struct rt_dac_device *device, rt_uint32_t cha
     RT_ASSERT(device != RT_NULL);
     stm32_dac_handler = device->parent.user_data;
 
-#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7)
+#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4)
     HAL_DAC_Stop(stm32_dac_handler, channel);
 #endif
 
@@ -96,7 +96,7 @@ static rt_err_t stm32_set_dac_value(struct rt_dac_device *device, rt_uint32_t ch
 
     rt_memset(&DAC_ChanConf, 0, sizeof(DAC_ChanConf));
 
-#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7)
+#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4)
     if ((channel <= 2) && (channel > 0))
     {
         /* set stm32 dac channel */
@@ -109,7 +109,7 @@ static rt_err_t stm32_set_dac_value(struct rt_dac_device *device, rt_uint32_t ch
     }
 #endif  
 
-#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7)
+#if defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32L4)
     DAC_ChanConf.DAC_Trigger      = DAC_TRIGGER_NONE;             
     DAC_ChanConf.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
 #endif    

bsp/stm32/libraries/STM32L4xx_HAL/SConscript

@@ -59,6 +59,10 @@ if GetDepend(['RT_USING_ADC']):
     src += ['STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_adc.c']
     src += ['STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_adc_ex.c']
 
+if GetDepend(['RT_USING_DAC']):
+    src += ['STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dac.c']
+    src += ['STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dac_ex.c']
+
 if GetDepend(['RT_USING_RTC']):
     src += ['STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_rtc.c']
     src += ['STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_rtc_ex.c']