!395 feat：Add DAC user mode interface

Merge pull request !395 from 张亚雷/master

uhdf/platform/BUILD.gn

@@ -30,6 +30,7 @@ config("hdf_platform_pub_config") {
     "$HDF_FRAMEWORKS/support/platform/include/i2c",
     "$HDF_FRAMEWORKS/support/platform/include/uart",
     "$HDF_FRAMEWORKS/support/platform/include/adc",
+    "$HDF_FRAMEWORKS/support/platform/include/dac",
     "$HDF_FRAMEWORKS/support/platform/include/regulator",
     "$HDF_FRAMEWORKS/support/platform/include/timer",
     "$HDF_FRAMEWORKS/../adapter/uhdf/posix/include",
@@ -46,6 +47,7 @@ ohos_shared_library("hdf_platform") {
     "$HDF_FRAMEWORKS/model/storage/src/mmc/emmc_if.c",
     "$HDF_FRAMEWORKS/model/storage/src/mmc/mmc_if.c",
     "$HDF_FRAMEWORKS/support/platform/src/adc/adc_if_u.c",
+    "$HDF_FRAMEWORKS/support/platform/src/dac/dac_if_u.c",
     "$HDF_FRAMEWORKS/support/platform/src/gpio/gpio_if.c",
     "$HDF_FRAMEWORKS/support/platform/src/hdmi/hdmi_if.c",
     "$HDF_FRAMEWORKS/support/platform/src/i2c/i2c_if.c",

uhdf/test/unittest/platform/BUILD.gn

@@ -60,6 +60,7 @@ if (board_name == "hi3516dv300" || board_name == "hispark_taurus") {
         "//drivers/framework/support/platform/test/unittest/common/hdf_pin_test.cpp",
         "//drivers/framework/support/platform/test/unittest/common/hdf_timer_test.cpp",
         "//drivers/framework/test/unittest/platform/common/adc_test.c",
+        "//drivers/framework/test/unittest/platform/common/dac_test.c",
         "//drivers/framework/test/unittest/platform/common/timer_test.c",
       ]
     }