feat(touch_sens): support touch sensor on esp32s31

components/esp_hal_touch_sens/esp32s31/include/hal/touch_sensor_channel.h

@@ -0,0 +1,51 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+// Touch channels
+
+#define TOUCH_PAD_GPIO6_CHANNEL     0
+#define TOUCH_PAD_NUM0_GPIO_NUM     6
+
+#define TOUCH_PAD_GPIO7_CHANNEL     1
+#define TOUCH_PAD_NUM1_GPIO_NUM     7
+
+#define TOUCH_PAD_GPIO8_CHANNEL     2
+#define TOUCH_PAD_NUM2_GPIO_NUM     8
+
+#define TOUCH_PAD_GPIO9_CHANNEL     3
+#define TOUCH_PAD_NUM3_GPIO_NUM     9
+
+#define TOUCH_PAD_GPIO10_CHANNEL    4
+#define TOUCH_PAD_NUM4_GPIO_NUM     10
+
+#define TOUCH_PAD_GPIO11_CHANNEL    5
+#define TOUCH_PAD_NUM5_GPIO_NUM     11
+
+#define TOUCH_PAD_GPIO12_CHANNEL    6
+#define TOUCH_PAD_NUM6_GPIO_NUM     12
+
+#define TOUCH_PAD_GPIO13_CHANNEL    7
+#define TOUCH_PAD_NUM7_GPIO_NUM     13
+
+#define TOUCH_PAD_GPIO14_CHANNEL    8
+#define TOUCH_PAD_NUM8_GPIO_NUM     14
+
+#define TOUCH_PAD_GPIO15_CHANNEL    9
+#define TOUCH_PAD_NUM9_GPIO_NUM     15
+
+#define TOUCH_PAD_GPIO16_CHANNEL    10
+#define TOUCH_PAD_NUM10_GPIO_NUM    16
+
+#define TOUCH_PAD_GPIO17_CHANNEL    11
+#define TOUCH_PAD_NUM11_GPIO_NUM    17
+
+#define TOUCH_PAD_GPIO18_CHANNEL    12
+#define TOUCH_PAD_NUM12_GPIO_NUM    18
+
+#define TOUCH_PAD_GPIO19_CHANNEL    13
+#define TOUCH_PAD_NUM13_GPIO_NUM    19

components/esp_hal_touch_sens/esp32s31/touch_sensor_periph.c

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+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "hal/touch_sensor_channel.h"
+
+/* Store IO number corresponding to the Touch Sensor channel number. */
+const int touch_sensor_channel_io_map[] = {
+    TOUCH_PAD_NUM0_GPIO_NUM,
+    TOUCH_PAD_NUM1_GPIO_NUM,
+    TOUCH_PAD_NUM2_GPIO_NUM,
+    TOUCH_PAD_NUM3_GPIO_NUM,
+    TOUCH_PAD_NUM4_GPIO_NUM,
+    TOUCH_PAD_NUM5_GPIO_NUM,
+    TOUCH_PAD_NUM6_GPIO_NUM,
+    TOUCH_PAD_NUM7_GPIO_NUM,
+    TOUCH_PAD_NUM8_GPIO_NUM,
+    TOUCH_PAD_NUM9_GPIO_NUM,
+    TOUCH_PAD_NUM10_GPIO_NUM,
+    TOUCH_PAD_NUM11_GPIO_NUM,
+    TOUCH_PAD_NUM12_GPIO_NUM,
+    TOUCH_PAD_NUM13_GPIO_NUM,
+};