refactor(sigmadelta): add hal sigmadelta driver

components/soc/esp32/include/soc/sigmadelta_caps.h

@@ -0,0 +1,37 @@
+// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// ESP32 have 1 SIGMADELTA peripheral.
+#define SIGMADELTA_PORT_0             (0) /*!< SIGMADELTA port 0 */
+#define SIGMADELTA_PORT_MAX           (1) /*!< SIGMADELTA port max */
+#define SOC_SIGMADELTA_NUM            (SIGMADELTA_PORT_MAX)
+
+#define SIGMADELTA_CHANNEL_0   (0)    /*!< Sigma-delta channel 0 */
+#define SIGMADELTA_CHANNEL_1   (1)    /*!< Sigma-delta channel 1 */
+#define SIGMADELTA_CHANNEL_2   (2)    /*!< Sigma-delta channel 2 */
+#define SIGMADELTA_CHANNEL_3   (3)    /*!< Sigma-delta channel 3 */
+#define SIGMADELTA_CHANNEL_4   (4)    /*!< Sigma-delta channel 4 */
+#define SIGMADELTA_CHANNEL_5   (5)    /*!< Sigma-delta channel 5 */
+#define SIGMADELTA_CHANNEL_6   (6)    /*!< Sigma-delta channel 6 */
+#define SIGMADELTA_CHANNEL_7   (7)    /*!< Sigma-delta channel 7 */
+#define SIGMADELTA_CHANNEL_MAX (8)
+
+#ifdef __cplusplus
+}
+#endif