soc: Add initial ESP32-C3 support

From internal commit 7761d6e8

components/soc/esp32c3/include/soc/uart_channel.h

@@ -0,0 +1,61 @@
+// Copyright 2020 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.
+
+#ifndef _SOC_UART_CHANNEL_H
+#define _SOC_UART_CHANNEL_H
+
+//UART channels
+#define UART_GPIO1_DIRECT_CHANNEL       UART_NUM_0
+#define UART_NUM_0_TXD_DIRECT_GPIO_NUM  1
+#define UART_GPIO3_DIRECT_CHANNEL       UART_NUM_0
+#define UART_NUM_0_RXD_DIRECT_GPIO_NUM  3
+#define UART_GPIO19_DIRECT_CHANNEL      UART_NUM_0
+#define UART_NUM_0_CTS_DIRECT_GPIO_NUM  19
+#define UART_GPIO22_DIRECT_CHANNEL      UART_NUM_0
+#define UART_NUM_0_RTS_DIRECT_GPIO_NUM  22
+
+#define UART_TXD_GPIO1_DIRECT_CHANNEL   UART_GPIO1_DIRECT_CHANNEL
+#define UART_RXD_GPIO3_DIRECT_CHANNEL   UART_GPIO3_DIRECT_CHANNEL
+#define UART_CTS_GPIO19_DIRECT_CHANNEL  UART_GPIO19_DIRECT_CHANNEL
+#define UART_RTS_GPIO22_DIRECT_CHANNEL  UART_GPIO22_DIRECT_CHANNEL
+
+#define UART_GPIO10_DIRECT_CHANNEL      UART_NUM_1
+#define UART_NUM_1_TXD_DIRECT_GPIO_NUM  10
+#define UART_GPIO9_DIRECT_CHANNEL       UART_NUM_1
+#define UART_NUM_1_RXD_DIRECT_GPIO_NUM  9
+#define UART_GPIO6_DIRECT_CHANNEL       UART_NUM_1
+#define UART_NUM_1_CTS_DIRECT_GPIO_NUM  6
+#define UART_GPIO11_DIRECT_CHANNEL      UART_NUM_1
+#define UART_NUM_1_RTS_DIRECT_GPIO_NUM  11
+
+#define UART_TXD_GPIO10_DIRECT_CHANNEL  UART_GPIO10_DIRECT_CHANNEL
+#define UART_RXD_GPIO9_DIRECT_CHANNEL   UART_GPIO9_DIRECT_CHANNEL
+#define UART_CTS_GPIO6_DIRECT_CHANNEL   UART_GPIO6_DIRECT_CHANNEL
+#define UART_RTS_GPIO11_DIRECT_CHANNEL  UART_GPIO11_DIRECT_CHANNEL
+
+#define UART_GPIO17_DIRECT_CHANNEL      UART_NUM_2
+#define UART_NUM_2_TXD_DIRECT_GPIO_NUM  17
+#define UART_GPIO16_DIRECT_CHANNEL      UART_NUM_2
+#define UART_NUM_2_RXD_DIRECT_GPIO_NUM  16
+#define UART_GPIO8_DIRECT_CHANNEL       UART_NUM_2
+#define UART_NUM_2_CTS_DIRECT_GPIO_NUM  8
+#define UART_GPIO7_DIRECT_CHANNEL       UART_NUM_2
+#define UART_NUM_2_RTS_DIRECT_GPIO_NUM  7
+
+#define UART_TXD_GPIO17_DIRECT_CHANNEL  UART_GPIO17_DIRECT_CHANNEL
+#define UART_RXD_GPIO16_DIRECT_CHANNEL  UART_GPIO16_DIRECT_CHANNEL
+#define UART_CTS_GPIO8_DIRECT_CHANNEL   UART_GPIO8_DIRECT_CHANNEL
+#define UART_RTS_GPIO7_DIRECT_CHANNEL   UART_GPIO7_DIRECT_CHANNEL
+
+#endif