Add support to Franzininho board

rename files ESP32S2-Franzininho to Franzininho-WiFi and remove some scripts previously tested

boards/Kconfig

@@ -370,7 +370,16 @@ config ARCH_BOARD_ESP32S2_SAOLA_1
 	select ARCH_HAVE_IRQBUTTONS if ESP32S2_GPIO_IRQ
 	---help---
 		This is the ESP32-S2-Saola-1 board
-
+		
+config ARCH_BOARD_FRANZININHO_WIFI
+	bool "FRANZININHO WI-FI"
+	depends on ARCH_CHIP_ESP32S2WROVER
+	select ARCH_HAVE_LEDS
+	select ARCH_HAVE_BUTTONS
+	select ARCH_HAVE_IRQBUTTONS if ESP32S2_GPIO_IRQ
+	---help---
+		Franzininho Wi-Fi is a development board to evaluate the ESP32-S2 SoC
+		
 config ARCH_BOARD_ESP32S3_DEVKIT
 	bool "Espressif ESP32-S3 DevKit"
 	depends on ARCH_CHIP_ESP32S3WROOM1 || ARCH_CHIP_ESP32S3MINI1
@@ -2708,6 +2717,7 @@ config ARCH_BOARD
 	default "esp32c3-devkit-rust-1"    if ARCH_BOARD_ESP32C3_DEVKIT_RUST1
 	default "esp32s2-kaluga-1"         if ARCH_BOARD_ESP32S2_KALUGA_1
 	default "esp32s2-saola-1"          if ARCH_BOARD_ESP32S2_SAOLA_1
+	default "franzininho-wifi"         if ARCH_BOARD_FRANZININHO_WIFI
 	default "esp32s3-devkit"           if ARCH_BOARD_ESP32S3_DEVKIT
 	default "esp32s3-eye"              if ARCH_BOARD_ESP32S3_EYE
 	default "et-stm32-stamp"           if ARCH_BOARD_ET_STM32_STAMP
@@ -3672,6 +3682,9 @@ endif
 if ARCH_BOARD_ESP32S2_SAOLA_1
 source "boards/xtensa/esp32s2/esp32s2-saola-1/Kconfig"
 endif
+if ARCH_BOARD_FRANZININHO_WIFI
+source "boards/xtensa/esp32s2/franzininho-wifi/Kconfig"
+endif
 if ARCH_BOARD_ESP32S3_DEVKIT
 source "boards/xtensa/esp32s3/esp32s3-devkit/Kconfig"
 endif

boards/xtensa/esp32s2/common/scripts/flat_memory.ld

@@ -51,8 +51,8 @@ MEMORY
    */
 
   metadata (RX) :        org = CONFIG_ESP32S2_APP_MCUBOOT_HEADER_SIZE, len = 0x20
-  ROM (RX) :             org = CONFIG_ESP32S2_APP_MCUBOOT_HEADER_SIZE + 0x20,
-                         len = FLASH_SIZE - (CONFIG_ESP32S2_APP_MCUBOOT_HEADER_SIZE + 0x20)
+  ROM (RX) :             org = ORIGIN(metadata) + LENGTH(metadata),
+                         len = FLASH_SIZE - ORIGIN(ROM)
 #endif
 
   /* Below values assume the flash cache is on, and have the blocks this
@@ -102,8 +102,8 @@ MEMORY
    * be equal.
    */
 
-  drom0_0_seg (R) :      org = 0x3f000000 + (CONFIG_ESP32S2_APP_MCUBOOT_HEADER_SIZE + 0x20),
-                         len = FLASH_SIZE - (CONFIG_ESP32S2_APP_MCUBOOT_HEADER_SIZE + 0x20)
+  drom0_0_seg (R) :      org = 0x3f000000 + ORIGIN(ROM),
+                         len = FLASH_SIZE - ORIGIN(ROM)
 #else
   /* The 0x20 offset is a convenience for the app binary image generation.
    * Flash cache has 64KB pages. The .bin file which is flashed to the chip

boards/xtensa/esp32s2/franzininho-wifi/Kconfig

@@ -0,0 +1,8 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_FRANZININHO_WIFI
+
+endif # ARCH_BOARD_FRANZININHO_WIFI

boards/xtensa/esp32s2/franzininho-wifi/configs/nsh/defconfig

@@ -0,0 +1,44 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_LEDS is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+# CONFIG_NSH_CMDPARMS is not set
+CONFIG_ARCH="xtensa"
+CONFIG_ARCH_BOARD="franzininho-wifi"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_FRANZININHO_WIFI=y
+CONFIG_ARCH_CHIP="esp32s2"
+CONFIG_ARCH_CHIP_ESP32S2=y
+CONFIG_ARCH_CHIP_ESP32S2WROVER=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_XTENSA=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_BUILTIN=y
+CONFIG_ESP32S2_UART0=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_IDLETHREAD_STACKSIZE=3072
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_SYSTEM_NSH=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/xtensa/esp32s2/franzininho-wifi/include/board.h

@@ -0,0 +1,58 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/include/board.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __BOARDS_XTENSA_ESP32S2_FRANZININHO_WIFI_INCLUDE_BOARD_H
+#define __BOARDS_XTENSA_ESP32S2_FRANZININHO_WIFI_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Clocking *****************************************************************/
+
+/* The Franzininho WiFi is fitted with a 40MHz crystal */
+
+#define BOARD_XTAL_FREQUENCY  40000000
+
+#ifdef CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ
+#  define BOARD_CLOCK_FREQUENCY (CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ * 1000000)
+#else
+#  define BOARD_CLOCK_FREQUENCY 80000000
+#endif
+
+/* LED definitions **********************************************************/
+
+/* Define how many LEDs this board has (needed by userleds) */
+
+#define BOARD_NLEDS       1
+
+/* GPIO pins used by the GPIO Subsystem */
+
+#define BOARD_NGPIOOUT    2 /* Amount of GPIO Output pins */
+#define BOARD_NGPIOIN     1 /* Amount of GPIO Input without Interruption */
+#define BOARD_NGPIOINT    1 /* Amount of GPIO Input w/ Interruption pins */
+
+#endif /* __BOARDS_XTENSA_ESP32S2_FRANZININHO_WIFI_INCLUDE_BOARD_H */

boards/xtensa/esp32s2/franzininho-wifi/scripts/Make.defs

@@ -0,0 +1,62 @@
+############################################################################
+# boards/xtensa/esp32s2/franzininho-wifi/scripts/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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 $(TOPDIR)/.config
+include $(TOPDIR)/tools/Config.mk
+include $(TOPDIR)/tools/esp32s2/Config.mk
+include $(TOPDIR)/arch/xtensa/src/lx7/Toolchain.defs
+
+ARCHSCRIPT += $(BOARD_COMMON_DIR)$(DELIM)scripts$(DELIM)esp32s2_rom.ld
+ARCHSCRIPT += $(BOARD_COMMON_DIR)$(DELIM)scripts$(DELIM)esp32s2_peripherals.ld
+
+# Pick the linker scripts from the board level if they exist, if not
+# pick the common linker scripts.
+
+ARCHSCRIPT += $(call FINDSCRIPT,flat_memory.ld)
+
+ifeq ($(CONFIG_ESP32S2_APP_FORMAT_MCUBOOT),y)
+  ARCHSCRIPT += $(call FINDSCRIPT,mcuboot_sections.ld)
+else
+  ARCHSCRIPT += $(call FINDSCRIPT,legacy_sections.ld)
+endif
+
+ARCHPICFLAGS = -fpic
+
+CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+AFLAGS := $(CFLAGS) -D__ASSEMBLY__
+
+# Loadable module definitions
+
+CMODULEFLAGS = $(CFLAGS) -mtext-section-literals
+
+LDMODULEFLAGS = -r -e module_initialize
+LDMODULEFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/modlib/gnu-elf.ld)
+
+# ELF module definitions
+
+CELFFLAGS = $(CFLAGS) -mtext-section-literals
+CXXELFFLAGS = $(CXXFLAGS) -mtext-section-literals
+
+LDELFFLAGS = -r -e main
+LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/binfmt/libelf/gnu-elf.ld)

boards/xtensa/esp32s2/franzininho-wifi/src/Make.defs

@@ -0,0 +1,39 @@
+############################################################################
+# boards/xtensa/esp32s2/franzininho-wifi/src/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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 $(TOPDIR)/Make.defs
+
+CSRCS = esp32s2_boot.c esp32s2_bringup.c
+
+ifeq ($(CONFIG_BOARDCTL),y)
+CSRCS += esp32s2_appinit.c
+ifeq ($(CONFIG_BOARDCTL_RESET),y)
+CSRCS += esp32s2_reset.c
+endif
+endif
+
+ifeq ($(CONFIG_ONESHOT),y)
+CSRCS += esp32s2_oneshot.c
+endif
+
+DEPPATH += --dep-path board
+VPATH += :board
+CFLAGS += $(shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board)
+

boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_appinit.c

@@ -0,0 +1,80 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_appinit.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <nuttx/board.h>
+
+#include "franzininho-wifi.h"
+
+#ifdef CONFIG_BOARDCTL
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_app_initialize
+ *
+ * Description:
+ *   Perform application specific initialization.  This function is never
+ *   called directly from application code, but only indirectly via the
+ *   (non-standard) boardctl() interface using the command BOARDIOC_INIT.
+ *
+ * Input Parameters:
+ *   arg - The boardctl() argument is passed to the board_app_initialize()
+ *         implementation without modification.  The argument has no
+ *         meaning to NuttX; the meaning of the argument is a contract
+ *         between the board-specific initialization logic and the
+ *         matching application logic.  The value could be such things as a
+ *         mode enumeration value, a set of DIP switch settings, a
+ *         pointer to configuration data read from a file or serial FLASH,
+ *         or whatever you would like to do with it.  Every implementation
+ *         should accept zero/NULL as a default configuration.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; a negated errno value is returned on
+ *   any failure to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int board_app_initialize(uintptr_t arg)
+{
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+  /* Board initialization already performed by board_late_initialize() */
+
+  return OK;
+#else
+  /* Perform board-specific initialization */
+
+  return esp32s2_bringup();
+#endif
+}
+
+#endif /* CONFIG_BOARDCTL */

boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_boot.c

@@ -0,0 +1,83 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_boot.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <nuttx/board.h>
+#include <nuttx/mm/mm.h>
+#include <arch/board/board.h>
+
+#include "franzininho-wifi.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp32s2_board_initialize
+ *
+ * Description:
+ *   All ESP32-S2 boards must provide the following entry point.
+ *   This entry point is called early in the initialization -- after all
+ *   memory has been configured and mapped but before any devices have been
+ *   initialized.
+ *
+ ****************************************************************************/
+
+void esp32s2_board_initialize(void)
+{
+}
+
+/****************************************************************************
+ * Name: board_late_initialize
+ *
+ * Description:
+ *   If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
+ *   initialization call will be performed in the boot-up sequence to a
+ *   function called board_late_initialize().  board_late_initialize() will
+ *   be called immediately after up_initialize() is called and just before
+ *   the initial application is started.  This additional initialization
+ *   phase may be used, for example, to initialize board-specific device
+ *   drivers.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+void board_late_initialize(void)
+{
+  /* Perform board-specific initialization */
+
+  esp32s2_bringup();
+}
+#endif

boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_bringup.c

@@ -0,0 +1,184 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_bringup.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <syslog.h>
+#include <debug.h>
+#include <stdio.h>
+
+#include <errno.h>
+#include <nuttx/fs/fs.h>
+
+#ifdef CONFIG_TIMER
+#  include "esp32s2_tim_lowerhalf.h"
+#endif
+
+#ifdef CONFIG_ESP32S2_RT_TIMER
+#  include "esp32s2_rt_timer.h"
+#endif
+
+#ifdef CONFIG_WATCHDOG
+#  include "esp32s2_board_wdt.h"
+#endif
+
+#include "franzininho-wifi.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp32s2_bringup
+ *
+ * Description:
+ *   Perform architecture-specific initialization
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y :
+ *     Called from board_late_initialize().
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
+ *     Called from the NSH library
+ *
+ ****************************************************************************/
+
+int esp32s2_bringup(void)
+{
+  int ret = OK;
+
+#ifdef CONFIG_FS_PROCFS
+  /* Mount the procfs file system */
+
+  ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
+    }
+#endif
+
+#ifdef CONFIG_FS_TMPFS
+  /* Mount the tmpfs file system */
+
+  ret = nx_mount(NULL, CONFIG_LIBC_TMPDIR, "tmpfs", 0, NULL);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to mount tmpfs at %s: %d\n",
+             CONFIG_LIBC_TMPDIR, ret);
+    }
+#endif
+
+#ifdef CONFIG_WATCHDOG
+  /* Configure watchdog timer */
+
+  ret = board_wdt_init();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize watchdog timer: %d\n", ret);
+    }
+#endif
+
+  /* Register the timer drivers */
+
+#ifdef CONFIG_TIMER
+
+#if defined(CONFIG_ESP32S2_TIMER0) && !defined(CONFIG_ONESHOT)
+  ret = esp32s2_timer_initialize("/dev/timer0", TIMER0);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to initialize timer driver: %d\n",
+             ret);
+      return ret;
+    }
+#endif
+
+#ifdef CONFIG_ESP32S2_TIMER1
+  ret = esp32s2_timer_initialize("/dev/timer1", TIMER1);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to initialize timer driver: %d\n",
+             ret);
+      return ret;
+    }
+#endif
+
+#ifdef CONFIG_ESP32S2_TIMER2
+  ret = esp32s2_timer_initialize("/dev/timer2", TIMER2);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to initialize timer driver: %d\n",
+             ret);
+      return ret;
+    }
+#endif
+
+#ifdef CONFIG_ESP32S2_TIMER3
+  ret = esp32s2_timer_initialize("/dev/timer3", TIMER3);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to initialize timer driver: %d\n",
+             ret);
+      return ret;
+    }
+#endif
+
+#endif /* CONFIG_TIMER */
+
+#ifdef CONFIG_ESP32S2_RT_TIMER
+  ret = esp32s2_rt_timer_init();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize RT timer: %d\n", ret);
+    }
+
+#endif
+  /* Now register one oneshot driver */
+
+#if defined(CONFIG_ONESHOT) && defined(CONFIG_ESP32S2_TIMER0)
+
+  ret = board_oneshot_init(ONESHOT_TIMER, ONESHOT_RESOLUTION_US);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: board_oneshot_init() failed: %d\n", ret);
+    }
+
+#endif /* CONFIG_ONESHOT */
+
+  /* If we got here then perhaps not all initialization was successful, but
+   * at least enough succeeded to bring-up NSH with perhaps reduced
+   * capabilities.
+   */
+
+  return ret;
+}

boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_oneshot.c

@@ -0,0 +1,83 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_oneshot.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+#include <sys/types.h>
+#include <nuttx/timers/timer.h>
+#include <nuttx/clock.h>
+#include <nuttx/timers/oneshot.h>
+#include "franzininho-wifi.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_oneshot_init
+ *
+ * Description:
+ *   Configure the oneshot timer driver.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int board_oneshot_init(int timer, uint16_t resolution)
+{
+  int ret = OK;
+  struct oneshot_lowerhalf_s *os_lower = NULL;
+
+  os_lower = oneshot_initialize(timer, resolution);
+  if (os_lower != NULL)
+    {
+#if defined(CONFIG_CPULOAD_ONESHOT)
+      /* Configure the oneshot timer to support CPU load measurement */
+
+      nxsched_oneshot_extclk(os_lower);
+
+#else
+      ret = oneshot_register("/dev/oneshot", os_lower);
+      if (ret < 0)
+        {
+          syslog(LOG_ERR,
+            "ERROR: Failed to register oneshot at /dev/oneshot: %d\n", ret);
+        }
+#endif /* CONFIG_CPULOAD_ONESHOT */
+    }
+  else
+    {
+      syslog(LOG_ERR, "ERROR: oneshot_initialize failed\n");
+      ret = -EBUSY;
+    }
+
+  return ret;
+}

boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_reset.c

@@ -0,0 +1,63 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/src/esp32s2_reset.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+
+#ifdef CONFIG_BOARDCTL_RESET
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_reset
+ *
+ * Description:
+ *   Reset board.  Support for this function is required by board-level
+ *   logic if CONFIG_BOARDCTL_RESET is selected.
+ *
+ * Input Parameters:
+ *   status - Status information provided with the reset event.  This
+ *            meaning of this status information is board-specific.  If not
+ *            used by a board, the value zero may be provided in calls to
+ *            board_reset().
+ *
+ * Returned Value:
+ *   If this function returns, then it was not possible to power-off the
+ *   board due to some constraints.  The return value in this case is a
+ *   board-specific reason for the failure to shutdown.
+ *
+ ****************************************************************************/
+
+int board_reset(int status)
+{
+  up_systemreset();
+
+  return 0;
+}
+
+#endif /* CONFIG_BOARDCTL_RESET */

boards/xtensa/esp32s2/franzininho-wifi/src/franzininho-wifi.h

@@ -0,0 +1,103 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/franzininho-wifi/src/franzininho-wifi.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __BOARDS_XTENSA_ESP32S2_FRANZININHO_WIFI_SRC_FRANZININHO_WIFI_H
+#define __BOARDS_XTENSA_ESP32S2_FRANZININHO_WIFI_SRC_FRANZININHO_WIFI_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+#include <stdint.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* BOOT Button */
+
+#define BUTTON_BOOT  0
+
+/* TIMERS */
+
+#define TIMER0 0
+#define TIMER1 1
+#define TIMER2 2
+#define TIMER3 3
+
+/* ONESHOT */
+
+#define ONESHOT_TIMER         TIMER0
+#define ONESHOT_RESOLUTION_US 1
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp32s2_bringup
+ *
+ * Description:
+ *   Perform architecture-specific initialization
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y :
+ *     Called from board_late_initialize().
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y && CONFIG_BOARDCTL=y :
+ *     Called from the NSH library via board_app_initialize()
+ *
+ ****************************************************************************/
+
+int esp32s2_bringup(void);
+
+/****************************************************************************
+ * Name: board_oneshot_init
+ *
+ * Description:
+ *   Configure the oneshot timer driver.
+ *
+ * Input Parameters:
+ *   timer      - Timer instance to be used as oneshot timer.
+ *   resolution - Oneshot timer resolution.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ONESHOT
+int board_oneshot_init(int timer, uint16_t resolution);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_XTENSA_ESP32S2_FRANZININHO_WIFI_SRC_FRANZININHO_WIFI_H */