Squashed 'third_party/pico-sdk/lib/tinyusb/' content from commit 868948f67c
Change-Id: I5d33c2566dd597be9d4b1c30d4b3723c5ef4a265
git-subtree-dir: third_party/pico-sdk/lib/tinyusb
git-subtree-split: 868948f67c90fa7c2553cdcd604b52862cf55720
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/hw/bsp/esp32s2/boards/CMakeLists.txt b/hw/bsp/esp32s2/boards/CMakeLists.txt
new file mode 100644
index 0000000..c3c687a
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/CMakeLists.txt
@@ -0,0 +1,12 @@
+idf_component_register(SRCS esp32s2.c
+ INCLUDE_DIRS "." "${BOARD}"
+ PRIV_REQUIRES "driver"
+ REQUIRES freertos src led_strip)
+
+# Apply board specific content
+include("${BOARD}/board.cmake")
+
+target_include_directories(${COMPONENT_TARGET} PUBLIC
+ "${TOP}/hw"
+ "${TOP}/src"
+)
diff --git a/hw/bsp/esp32s2/boards/adafruit_feather_esp32s2/board.cmake b/hw/bsp/esp32s2/boards/adafruit_feather_esp32s2/board.cmake
new file mode 100644
index 0000000..d339626
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/adafruit_feather_esp32s2/board.cmake
@@ -0,0 +1,17 @@
+# Apply board specific content here
+target_include_directories(${COMPONENT_LIB} PRIVATE .)
+
+idf_build_get_property(idf_target IDF_TARGET)
+
+message(STATUS "Apply ${BOARD}(${idf_target}) specific options for component: ${COMPONENT_TARGET}")
+
+if(NOT ${idf_target} STREQUAL "esp32s2")
+ message(FATAL_ERROR "Incorrect target for board ${BOARD}: $ENV{IDF_TARGET}(${idf_target}), try to clean the build first." )
+endif()
+
+set(IDF_TARGET "esp32s2" FORCE)
+
+target_compile_options(${COMPONENT_TARGET} PUBLIC
+ "-DCFG_TUSB_MCU=OPT_MCU_ESP32S2"
+ "-DCFG_TUSB_OS=OPT_OS_FREERTOS"
+)
\ No newline at end of file
diff --git a/hw/bsp/esp32s2/boards/adafruit_feather_esp32s2/board.h b/hw/bsp/esp32s2/boards/adafruit_feather_esp32s2/board.h
new file mode 100644
index 0000000..43e0090
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/adafruit_feather_esp32s2/board.h
@@ -0,0 +1,45 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define NEOPIXEL_PIN 33
+#define NEOPIXEL_POWER_PIN 21
+#define NEOPIXEL_POWER_STATE 1
+
+#define BUTTON_PIN 0
+#define BUTTON_STATE_ACTIVE 0
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/esp32s2/boards/adafruit_magtag_29gray/board.cmake b/hw/bsp/esp32s2/boards/adafruit_magtag_29gray/board.cmake
new file mode 100644
index 0000000..d339626
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/adafruit_magtag_29gray/board.cmake
@@ -0,0 +1,17 @@
+# Apply board specific content here
+target_include_directories(${COMPONENT_LIB} PRIVATE .)
+
+idf_build_get_property(idf_target IDF_TARGET)
+
+message(STATUS "Apply ${BOARD}(${idf_target}) specific options for component: ${COMPONENT_TARGET}")
+
+if(NOT ${idf_target} STREQUAL "esp32s2")
+ message(FATAL_ERROR "Incorrect target for board ${BOARD}: $ENV{IDF_TARGET}(${idf_target}), try to clean the build first." )
+endif()
+
+set(IDF_TARGET "esp32s2" FORCE)
+
+target_compile_options(${COMPONENT_TARGET} PUBLIC
+ "-DCFG_TUSB_MCU=OPT_MCU_ESP32S2"
+ "-DCFG_TUSB_OS=OPT_OS_FREERTOS"
+)
\ No newline at end of file
diff --git a/hw/bsp/esp32s2/boards/adafruit_magtag_29gray/board.h b/hw/bsp/esp32s2/boards/adafruit_magtag_29gray/board.h
new file mode 100644
index 0000000..16e30b6
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/adafruit_magtag_29gray/board.h
@@ -0,0 +1,45 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define NEOPIXEL_PIN 1
+#define NEOPIXEL_POWER_PIN 21
+#define NEOPIXEL_POWER_STATE 0
+
+#define BUTTON_PIN 0
+#define BUTTON_STATE_ACTIVE 0
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/esp32s2/boards/adafruit_metro_esp32s2/board.cmake b/hw/bsp/esp32s2/boards/adafruit_metro_esp32s2/board.cmake
new file mode 100644
index 0000000..d5c17b9
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/adafruit_metro_esp32s2/board.cmake
@@ -0,0 +1,17 @@
+# Apply board specific content here
+target_include_directories(${COMPONENT_LIB} PRIVATE .)
+
+idf_build_get_property(idf_target IDF_TARGET)
+
+message(STATUS "Apply ${BOARD}(${idf_target}) specific options for component: ${COMPONENT_TARGET}")
+
+if(NOT ${idf_target} STREQUAL "esp32s2")
+ message(FATAL_ERROR "Incorrect target for board ${BOARD}: (${idf_target}), try to clean the build first." )
+endif()
+
+set(IDF_TARGET "esp32s2" FORCE)
+
+target_compile_options(${COMPONENT_TARGET} PUBLIC
+ "-DCFG_TUSB_MCU=OPT_MCU_ESP32S2"
+ "-DCFG_TUSB_OS=OPT_OS_FREERTOS"
+)
\ No newline at end of file
diff --git a/hw/bsp/esp32s2/boards/adafruit_metro_esp32s2/board.h b/hw/bsp/esp32s2/boards/adafruit_metro_esp32s2/board.h
new file mode 100644
index 0000000..49a2474
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/adafruit_metro_esp32s2/board.h
@@ -0,0 +1,43 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define NEOPIXEL_PIN 45
+
+#define BUTTON_PIN 0
+#define BUTTON_STATE_ACTIVE 0
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/esp32s2/boards/esp32s2.c b/hw/bsp/esp32s2/boards/esp32s2.c
new file mode 100644
index 0000000..358c0c8
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/esp32s2.c
@@ -0,0 +1,143 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "../../board.h"
+#include "board.h"
+
+#include "esp_rom_gpio.h"
+#include "hal/gpio_ll.h"
+#include "hal/usb_hal.h"
+#include "soc/usb_periph.h"
+
+#include "driver/periph_ctrl.h"
+#include "driver/rmt.h"
+
+#ifdef NEOPIXEL_PIN
+#include "led_strip.h"
+static led_strip_t *strip;
+#endif
+
+//--------------------------------------------------------------------+
+// MACRO TYPEDEF CONSTANT ENUM DECLARATION
+//--------------------------------------------------------------------+
+
+static void configure_pins(usb_hal_context_t *usb);
+
+// Initialize on-board peripherals : led, button, uart and USB
+void board_init(void)
+{
+
+#ifdef NEOPIXEL_PIN
+ #ifdef NEOPIXEL_POWER_PIN
+ gpio_reset_pin(NEOPIXEL_POWER_PIN);
+ gpio_set_direction(NEOPIXEL_POWER_PIN, GPIO_MODE_OUTPUT);
+ gpio_set_level(NEOPIXEL_POWER_PIN, NEOPIXEL_POWER_STATE);
+ #endif
+
+ // WS2812 Neopixel driver with RMT peripheral
+ rmt_config_t config = RMT_DEFAULT_CONFIG_TX(NEOPIXEL_PIN, RMT_CHANNEL_0);
+ config.clk_div = 2; // set counter clock to 40MHz
+
+ rmt_config(&config);
+ rmt_driver_install(config.channel, 0, 0);
+
+ led_strip_config_t strip_config = LED_STRIP_DEFAULT_CONFIG(1, (led_strip_dev_t) config.channel);
+ strip = led_strip_new_rmt_ws2812(&strip_config);
+ strip->clear(strip, 100); // off led
+#endif
+
+ // Button
+ gpio_pad_select_gpio(BUTTON_PIN);
+ gpio_set_direction(BUTTON_PIN, GPIO_MODE_INPUT);
+ gpio_set_pull_mode(BUTTON_PIN, BUTTON_STATE_ACTIVE ? GPIO_PULLDOWN_ONLY : GPIO_PULLUP_ONLY);
+
+ // USB Controller Hal init
+ periph_module_reset(PERIPH_USB_MODULE);
+ periph_module_enable(PERIPH_USB_MODULE);
+
+ usb_hal_context_t hal = {
+ .use_external_phy = false // use built-in PHY
+ };
+ usb_hal_init(&hal);
+ configure_pins(&hal);
+}
+
+static void configure_pins(usb_hal_context_t *usb)
+{
+ /* usb_periph_iopins currently configures USB_OTG as USB Device.
+ * Introduce additional parameters in usb_hal_context_t when adding support
+ * for USB Host.
+ */
+ for (const usb_iopin_dsc_t *iopin = usb_periph_iopins; iopin->pin != -1; ++iopin) {
+ if ((usb->use_external_phy) || (iopin->ext_phy_only == 0)) {
+ esp_rom_gpio_pad_select_gpio(iopin->pin);
+ if (iopin->is_output) {
+ esp_rom_gpio_connect_out_signal(iopin->pin, iopin->func, false, false);
+ } else {
+ esp_rom_gpio_connect_in_signal(iopin->pin, iopin->func, false);
+ if ((iopin->pin != GPIO_FUNC_IN_LOW) && (iopin->pin != GPIO_FUNC_IN_HIGH)) {
+ gpio_ll_input_enable(&GPIO, iopin->pin);
+ }
+ }
+ esp_rom_gpio_pad_unhold(iopin->pin);
+ }
+ }
+ if (!usb->use_external_phy) {
+ gpio_set_drive_capability(USBPHY_DM_NUM, GPIO_DRIVE_CAP_3);
+ gpio_set_drive_capability(USBPHY_DP_NUM, GPIO_DRIVE_CAP_3);
+ }
+}
+
+// Turn LED on or off
+void board_led_write(bool state)
+{
+#ifdef NEOPIXEL_PIN
+ strip->set_pixel(strip, 0, (state ? 0x88 : 0x00), 0x00, 0x00);
+ strip->refresh(strip, 100);
+#endif
+}
+
+// Get the current state of button
+// a '1' means active (pressed), a '0' means inactive.
+uint32_t board_button_read(void)
+{
+ return gpio_get_level(BUTTON_PIN) == BUTTON_STATE_ACTIVE;
+}
+
+// Get characters from UART
+int board_uart_read(uint8_t* buf, int len)
+{
+ (void) buf; (void) len;
+ return 0;
+}
+
+// Send characters to UART
+int board_uart_write(void const * buf, int len)
+{
+ (void) buf; (void) len;
+ return 0;
+}
+
diff --git a/hw/bsp/esp32s2/boards/espressif_kaluga_1/board.cmake b/hw/bsp/esp32s2/boards/espressif_kaluga_1/board.cmake
new file mode 100644
index 0000000..d5c17b9
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/espressif_kaluga_1/board.cmake
@@ -0,0 +1,17 @@
+# Apply board specific content here
+target_include_directories(${COMPONENT_LIB} PRIVATE .)
+
+idf_build_get_property(idf_target IDF_TARGET)
+
+message(STATUS "Apply ${BOARD}(${idf_target}) specific options for component: ${COMPONENT_TARGET}")
+
+if(NOT ${idf_target} STREQUAL "esp32s2")
+ message(FATAL_ERROR "Incorrect target for board ${BOARD}: (${idf_target}), try to clean the build first." )
+endif()
+
+set(IDF_TARGET "esp32s2" FORCE)
+
+target_compile_options(${COMPONENT_TARGET} PUBLIC
+ "-DCFG_TUSB_MCU=OPT_MCU_ESP32S2"
+ "-DCFG_TUSB_OS=OPT_OS_FREERTOS"
+)
\ No newline at end of file
diff --git a/hw/bsp/esp32s2/boards/espressif_kaluga_1/board.h b/hw/bsp/esp32s2/boards/espressif_kaluga_1/board.h
new file mode 100644
index 0000000..6bb44f7
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/espressif_kaluga_1/board.h
@@ -0,0 +1,44 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// Note: need to insert jumper next to WS2812 pixel
+#define NEOPIXEL_PIN 45
+
+#define BUTTON_PIN 0
+#define BUTTON_STATE_ACTIVE 0
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/esp32s2/boards/espressif_saola_1/board.cmake b/hw/bsp/esp32s2/boards/espressif_saola_1/board.cmake
new file mode 100644
index 0000000..d5c17b9
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/espressif_saola_1/board.cmake
@@ -0,0 +1,17 @@
+# Apply board specific content here
+target_include_directories(${COMPONENT_LIB} PRIVATE .)
+
+idf_build_get_property(idf_target IDF_TARGET)
+
+message(STATUS "Apply ${BOARD}(${idf_target}) specific options for component: ${COMPONENT_TARGET}")
+
+if(NOT ${idf_target} STREQUAL "esp32s2")
+ message(FATAL_ERROR "Incorrect target for board ${BOARD}: (${idf_target}), try to clean the build first." )
+endif()
+
+set(IDF_TARGET "esp32s2" FORCE)
+
+target_compile_options(${COMPONENT_TARGET} PUBLIC
+ "-DCFG_TUSB_MCU=OPT_MCU_ESP32S2"
+ "-DCFG_TUSB_OS=OPT_OS_FREERTOS"
+)
\ No newline at end of file
diff --git a/hw/bsp/esp32s2/boards/espressif_saola_1/board.h b/hw/bsp/esp32s2/boards/espressif_saola_1/board.h
new file mode 100644
index 0000000..f450b9a
--- /dev/null
+++ b/hw/bsp/esp32s2/boards/espressif_saola_1/board.h
@@ -0,0 +1,45 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+// Note: On the production version (v1.2) WS2812 is connected to GPIO 18,
+// however earlier revision v1.1 WS2812 is connected to GPIO 17
+#define NEOPIXEL_PIN 18
+
+#define BUTTON_PIN 0
+#define BUTTON_STATE_ACTIVE 0
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/esp32s2/components/led_strip/CMakeLists.txt b/hw/bsp/esp32s2/components/led_strip/CMakeLists.txt
new file mode 100644
index 0000000..6d0fcbc
--- /dev/null
+++ b/hw/bsp/esp32s2/components/led_strip/CMakeLists.txt
@@ -0,0 +1,8 @@
+set(component_srcs "src/led_strip_rmt_ws2812.c")
+
+idf_component_register(SRCS "${component_srcs}"
+ INCLUDE_DIRS "include"
+ PRIV_INCLUDE_DIRS ""
+ PRIV_REQUIRES "driver"
+ REQUIRES "")
+
diff --git a/hw/bsp/esp32s2/components/led_strip/include/led_strip.h b/hw/bsp/esp32s2/components/led_strip/include/led_strip.h
new file mode 100644
index 0000000..a9dffc3
--- /dev/null
+++ b/hw/bsp/esp32s2/components/led_strip/include/led_strip.h
@@ -0,0 +1,126 @@
+// 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 "esp_err.h"
+
+/**
+* @brief LED Strip Type
+*
+*/
+typedef struct led_strip_s led_strip_t;
+
+/**
+* @brief LED Strip Device Type
+*
+*/
+typedef void *led_strip_dev_t;
+
+/**
+* @brief Declare of LED Strip Type
+*
+*/
+struct led_strip_s {
+ /**
+ * @brief Set RGB for a specific pixel
+ *
+ * @param strip: LED strip
+ * @param index: index of pixel to set
+ * @param red: red part of color
+ * @param green: green part of color
+ * @param blue: blue part of color
+ *
+ * @return
+ * - ESP_OK: Set RGB for a specific pixel successfully
+ * - ESP_ERR_INVALID_ARG: Set RGB for a specific pixel failed because of invalid parameters
+ * - ESP_FAIL: Set RGB for a specific pixel failed because other error occurred
+ */
+ esp_err_t (*set_pixel)(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue);
+
+ /**
+ * @brief Refresh memory colors to LEDs
+ *
+ * @param strip: LED strip
+ * @param timeout_ms: timeout value for refreshing task
+ *
+ * @return
+ * - ESP_OK: Refresh successfully
+ * - ESP_ERR_TIMEOUT: Refresh failed because of timeout
+ * - ESP_FAIL: Refresh failed because some other error occurred
+ *
+ * @note:
+ * After updating the LED colors in the memory, a following invocation of this API is needed to flush colors to strip.
+ */
+ esp_err_t (*refresh)(led_strip_t *strip, uint32_t timeout_ms);
+
+ /**
+ * @brief Clear LED strip (turn off all LEDs)
+ *
+ * @param strip: LED strip
+ * @param timeout_ms: timeout value for clearing task
+ *
+ * @return
+ * - ESP_OK: Clear LEDs successfully
+ * - ESP_ERR_TIMEOUT: Clear LEDs failed because of timeout
+ * - ESP_FAIL: Clear LEDs failed because some other error occurred
+ */
+ esp_err_t (*clear)(led_strip_t *strip, uint32_t timeout_ms);
+
+ /**
+ * @brief Free LED strip resources
+ *
+ * @param strip: LED strip
+ *
+ * @return
+ * - ESP_OK: Free resources successfully
+ * - ESP_FAIL: Free resources failed because error occurred
+ */
+ esp_err_t (*del)(led_strip_t *strip);
+};
+
+/**
+* @brief LED Strip Configuration Type
+*
+*/
+typedef struct {
+ uint32_t max_leds; /*!< Maximum LEDs in a single strip */
+ led_strip_dev_t dev; /*!< LED strip device (e.g. RMT channel, PWM channel, etc) */
+} led_strip_config_t;
+
+/**
+ * @brief Default configuration for LED strip
+ *
+ */
+#define LED_STRIP_DEFAULT_CONFIG(number, dev_hdl) \
+ { \
+ .max_leds = number, \
+ .dev = dev_hdl, \
+ }
+
+/**
+* @brief Install a new ws2812 driver (based on RMT peripheral)
+*
+* @param config: LED strip configuration
+* @return
+* LED strip instance or NULL
+*/
+led_strip_t *led_strip_new_rmt_ws2812(const led_strip_config_t *config);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/hw/bsp/esp32s2/components/led_strip/src/led_strip_rmt_ws2812.c b/hw/bsp/esp32s2/components/led_strip/src/led_strip_rmt_ws2812.c
new file mode 100644
index 0000000..025d3c5
--- /dev/null
+++ b/hw/bsp/esp32s2/components/led_strip/src/led_strip_rmt_ws2812.c
@@ -0,0 +1,171 @@
+// 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.
+#include <stdlib.h>
+#include <string.h>
+#include <sys/cdefs.h>
+#include "esp_log.h"
+#include "esp_attr.h"
+#include "led_strip.h"
+#include "driver/rmt.h"
+
+static const char *TAG = "ws2812";
+#define STRIP_CHECK(a, str, goto_tag, ret_value, ...) \
+ do \
+ { \
+ if (!(a)) \
+ { \
+ ESP_LOGE(TAG, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
+ ret = ret_value; \
+ goto goto_tag; \
+ } \
+ } while (0)
+
+#define WS2812_T0H_NS (350)
+#define WS2812_T0L_NS (1000)
+#define WS2812_T1H_NS (1000)
+#define WS2812_T1L_NS (350)
+#define WS2812_RESET_US (280)
+
+static uint32_t ws2812_t0h_ticks = 0;
+static uint32_t ws2812_t1h_ticks = 0;
+static uint32_t ws2812_t0l_ticks = 0;
+static uint32_t ws2812_t1l_ticks = 0;
+
+typedef struct {
+ led_strip_t parent;
+ rmt_channel_t rmt_channel;
+ uint32_t strip_len;
+ uint8_t buffer[0];
+} ws2812_t;
+
+/**
+ * @brief Conver RGB data to RMT format.
+ *
+ * @note For WS2812, R,G,B each contains 256 different choices (i.e. uint8_t)
+ *
+ * @param[in] src: source data, to converted to RMT format
+ * @param[in] dest: place where to store the convert result
+ * @param[in] src_size: size of source data
+ * @param[in] wanted_num: number of RMT items that want to get
+ * @param[out] translated_size: number of source data that got converted
+ * @param[out] item_num: number of RMT items which are converted from source data
+ */
+static void IRAM_ATTR ws2812_rmt_adapter(const void *src, rmt_item32_t *dest, size_t src_size,
+ size_t wanted_num, size_t *translated_size, size_t *item_num)
+{
+ if (src == NULL || dest == NULL) {
+ *translated_size = 0;
+ *item_num = 0;
+ return;
+ }
+ const rmt_item32_t bit0 = {{{ ws2812_t0h_ticks, 1, ws2812_t0l_ticks, 0 }}}; //Logical 0
+ const rmt_item32_t bit1 = {{{ ws2812_t1h_ticks, 1, ws2812_t1l_ticks, 0 }}}; //Logical 1
+ size_t size = 0;
+ size_t num = 0;
+ uint8_t *psrc = (uint8_t *)src;
+ rmt_item32_t *pdest = dest;
+ while (size < src_size && num < wanted_num) {
+ for (int i = 0; i < 8; i++) {
+ // MSB first
+ if (*psrc & (1 << (7 - i))) {
+ pdest->val = bit1.val;
+ } else {
+ pdest->val = bit0.val;
+ }
+ num++;
+ pdest++;
+ }
+ size++;
+ psrc++;
+ }
+ *translated_size = size;
+ *item_num = num;
+}
+
+static esp_err_t ws2812_set_pixel(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
+{
+ esp_err_t ret = ESP_OK;
+ ws2812_t *ws2812 = __containerof(strip, ws2812_t, parent);
+ STRIP_CHECK(index < ws2812->strip_len, "index out of the maximum number of leds", err, ESP_ERR_INVALID_ARG);
+ uint32_t start = index * 3;
+ // In thr order of GRB
+ ws2812->buffer[start + 0] = green & 0xFF;
+ ws2812->buffer[start + 1] = red & 0xFF;
+ ws2812->buffer[start + 2] = blue & 0xFF;
+ return ESP_OK;
+err:
+ return ret;
+}
+
+static esp_err_t ws2812_refresh(led_strip_t *strip, uint32_t timeout_ms)
+{
+ esp_err_t ret = ESP_OK;
+ ws2812_t *ws2812 = __containerof(strip, ws2812_t, parent);
+ STRIP_CHECK(rmt_write_sample(ws2812->rmt_channel, ws2812->buffer, ws2812->strip_len * 3, true) == ESP_OK,
+ "transmit RMT samples failed", err, ESP_FAIL);
+ return rmt_wait_tx_done(ws2812->rmt_channel, pdMS_TO_TICKS(timeout_ms));
+err:
+ return ret;
+}
+
+static esp_err_t ws2812_clear(led_strip_t *strip, uint32_t timeout_ms)
+{
+ ws2812_t *ws2812 = __containerof(strip, ws2812_t, parent);
+ // Write zero to turn off all leds
+ memset(ws2812->buffer, 0, ws2812->strip_len * 3);
+ return ws2812_refresh(strip, timeout_ms);
+}
+
+static esp_err_t ws2812_del(led_strip_t *strip)
+{
+ ws2812_t *ws2812 = __containerof(strip, ws2812_t, parent);
+ free(ws2812);
+ return ESP_OK;
+}
+
+led_strip_t *led_strip_new_rmt_ws2812(const led_strip_config_t *config)
+{
+ led_strip_t *ret = NULL;
+ STRIP_CHECK(config, "configuration can't be null", err, NULL);
+
+ // 24 bits per led
+ uint32_t ws2812_size = sizeof(ws2812_t) + config->max_leds * 3;
+ ws2812_t *ws2812 = calloc(1, ws2812_size);
+ STRIP_CHECK(ws2812, "request memory for ws2812 failed", err, NULL);
+
+ uint32_t counter_clk_hz = 0;
+ STRIP_CHECK(rmt_get_counter_clock((rmt_channel_t)config->dev, &counter_clk_hz) == ESP_OK,
+ "get rmt counter clock failed", err, NULL);
+ // ns -> ticks
+ float ratio = (float)counter_clk_hz / 1e9;
+ ws2812_t0h_ticks = (uint32_t)(ratio * WS2812_T0H_NS);
+ ws2812_t0l_ticks = (uint32_t)(ratio * WS2812_T0L_NS);
+ ws2812_t1h_ticks = (uint32_t)(ratio * WS2812_T1H_NS);
+ ws2812_t1l_ticks = (uint32_t)(ratio * WS2812_T1L_NS);
+
+ // set ws2812 to rmt adapter
+ rmt_translator_init((rmt_channel_t)config->dev, ws2812_rmt_adapter);
+
+ ws2812->rmt_channel = (rmt_channel_t)config->dev;
+ ws2812->strip_len = config->max_leds;
+
+ ws2812->parent.set_pixel = ws2812_set_pixel;
+ ws2812->parent.refresh = ws2812_refresh;
+ ws2812->parent.clear = ws2812_clear;
+ ws2812->parent.del = ws2812_del;
+
+ return &ws2812->parent;
+err:
+ return ret;
+}
diff --git a/hw/bsp/esp32s2/family.cmake b/hw/bsp/esp32s2/family.cmake
new file mode 100644
index 0000000..f3d41d0
--- /dev/null
+++ b/hw/bsp/esp32s2/family.cmake
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.5)
+
+# Add example src and bsp directories
+set(EXTRA_COMPONENT_DIRS "src" "${TOP}/hw/bsp/esp32s2/boards" "${TOP}/hw/bsp/esp32s2/components")
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+set(SUPPORTED_TARGETS esp32s2)
+set(FAMILY_MCUS ESP32S2)
diff --git a/hw/bsp/esp32s2/family.mk b/hw/bsp/esp32s2/family.mk
new file mode 100644
index 0000000..4b9000a
--- /dev/null
+++ b/hw/bsp/esp32s2/family.mk
@@ -0,0 +1,23 @@
+#DEPS_SUBMODULES +=
+
+.PHONY: all clean flash bootloader-flash app-flash erase monitor dfu-flash dfu
+
+all:
+ idf.py -B$(BUILD) -DFAMILY=$(FAMILY) -DBOARD=$(BOARD) $(CMAKE_DEFSYM) -DIDF_TARGET=esp32s2 build
+
+build: all
+
+fullclean:
+ if test -f sdkconfig; then $(RM) -f sdkconfig ; fi
+ if test -d $(BUILD); then $(RM) -rf $(BUILD) ; fi
+
+clean flash bootloader-flash app-flash erase monitor dfu-flash dfu size size-components size-files:
+ idf.py -B$(BUILD) -DFAMILY=$(FAMILY) -DBOARD=$(BOARD) $(CMAKE_DEFSYM) $@
+
+uf2: $(BUILD)/$(PROJECT).uf2
+
+UF2_FAMILY_ID = 0xbfdd4eee
+$(BUILD)/$(PROJECT).uf2: $(BUILD)/$(PROJECT).bin
+ @echo CREATE $@
+ $(PYTHON) $(TOP)/tools/uf2/utils/uf2conv.py -f $(UF2_FAMILY_ID) -b 0x0 -c -o $@ $^
+