rmt: add HAL layer

components/soc/esp32/include/soc/rmt_caps.h

@@ -0,0 +1,43 @@
+// Copyright 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
+
+#include <stdint.h>
+
+#define RMT_CHANNEL_MEM_WORDS (64) /*!< Each channel owns 64 words memory */
+
+/**
+* @brief RMT channel ID
+*
+*/
+typedef enum {
+    RMT_CHANNEL_0,  /*!< RMT channel number 0 */
+    RMT_CHANNEL_1,  /*!< RMT channel number 1 */
+    RMT_CHANNEL_2,  /*!< RMT channel number 2 */
+    RMT_CHANNEL_3,  /*!< RMT channel number 3 */
+    RMT_CHANNEL_4,  /*!< RMT channel number 4 */
+    RMT_CHANNEL_5,  /*!< RMT channel number 5 */
+    RMT_CHANNEL_6,  /*!< RMT channel number 6 */
+    RMT_CHANNEL_7,  /*!< RMT channel number 7 */
+    RMT_CHANNEL_MAX /*!< Number of RMT channels */
+} rmt_channel_id_t;
+
+#ifdef __cplusplus
+}
+#endif