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pkarashchenko pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
The following commit(s) were added to refs/heads/master by this push:
new 64c0ec592b esp32-devkitc: Add support to W5500 WIZnet
64c0ec592b is described below
commit 64c0ec592b8385e79db7faf33f3291be5561781a
Author: Alan Carvalho de Assis <[email protected]>
AuthorDate: Thu Sep 15 20:03:52 2022 -0300
esp32-devkitc: Add support to W5500 WIZnet
---
boards/xtensa/esp32/esp32-devkitc/src/Make.defs | 4 +
.../xtensa/esp32/esp32-devkitc/src/esp32_w5500.c | 223 +++++++++++++++++++++
2 files changed, 227 insertions(+)
diff --git a/boards/xtensa/esp32/esp32-devkitc/src/Make.defs
b/boards/xtensa/esp32/esp32-devkitc/src/Make.defs
index 61a924829b..8b3ee8acbf 100644
--- a/boards/xtensa/esp32/esp32-devkitc/src/Make.defs
+++ b/boards/xtensa/esp32/esp32-devkitc/src/Make.defs
@@ -55,6 +55,10 @@ ifeq ($(CONFIG_ESP32_TWAI),y)
CSRCS += esp32_twai.c
endif
+ifeq ($(CONFIG_NET_W5500),y)
+CSRCS += esp32_w5500.c
+endif
+
SCRIPTOUT = $(BOARD_DIR)$(DELIM)scripts$(DELIM)esp32_out.ld
.PHONY = context distclean
diff --git a/boards/xtensa/esp32/esp32-devkitc/src/esp32_w5500.c
b/boards/xtensa/esp32/esp32-devkitc/src/esp32_w5500.c
new file mode 100644
index 0000000000..dd6d245343
--- /dev/null
+++ b/boards/xtensa/esp32/esp32-devkitc/src/esp32_w5500.c
@@ -0,0 +1,223 @@
+/****************************************************************************
+ * boards/xtensa/esp32/esp32-devkitc/src/esp32_w5500.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 <syslog.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/irq.h>
+#include <arch/irq.h>
+
+#include <nuttx/spi/spi.h>
+#include <nuttx/net/w5500.h>
+#include <nuttx/ioexpander/gpio.h>
+
+#include <arch/board/board.h>
+
+#include "esp32-devkitc.h"
+#include "esp32_spi.h"
+#include "esp32_gpio.h"
+#include "hardware/esp32_gpio_sigmap.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+/* W5500 GPIO pins */
+
+#define GPIO_W5500_INTR 17
+#define GPIO_W5500_RESET 18
+
+/* W5500 is on SPI1 */
+
+#ifndef CONFIG_ESP32_SPI2
+# error "Need CONFIG_ESP32_SPI2 in the configuration"
+#endif
+
+/* SPI Assumptions **********************************************************/
+
+#define W5500_SPI_PORTNO 2 /* On SPI2 */
+#define W5500_DEVNO 0 /* Only one W5500 */
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct esp32_lower_s
+{
+ const struct w5500_lower_s lower; /* Low-level MCU interface */
+ xcpt_t handler; /* W5500 interrupt handler */
+ void *arg; /* Argument that accompanies IRQ */
+};
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static int up_attach(const struct w5500_lower_s *lower, xcpt_t handler,
+ void *arg);
+static void up_enable(const struct w5500_lower_s *lower, bool enable);
+static void up_reset(const struct w5500_lower_s *lower, bool reset);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* The W5500 normal provides interrupts to the MCU via a GPIO pin. The
+ * following structure provides an MCU-independent mechanism for controlling
+ * the W5500 GPIO interrupt.
+ */
+
+static struct esp32_lower_s g_enclower =
+{
+ .lower =
+ {
+ .frequency = 1000000,
+ .spidevid = 0,
+ .mode = SPIDEV_MODE0,
+ .attach = up_attach,
+ .enable = up_enable,
+ .reset = up_reset,
+ },
+ .handler = NULL,
+ .arg = NULL
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: struct w5500_lower_s methods
+ ****************************************************************************/
+
+static int up_attach(const struct w5500_lower_s *lower, xcpt_t handler,
+ void *arg)
+{
+ struct esp32_lower_s *priv = (struct esp32_lower_s *)lower;
+
+ /* Just save the handler for use when the interrupt is enabled */
+
+ priv->handler = handler;
+ priv->arg = arg;
+ return OK;
+}
+
+static void up_enable(const struct w5500_lower_s *lower, bool enable)
+{
+ struct esp32_lower_s *priv = (struct esp32_lower_s *)lower;
+
+ int irq = ESP32_PIN2IRQ(GPIO_W5500_INTR);
+ int ret;
+
+ /* Make sure the interrupt is disabled */
+
+ esp32_gpioirqdisable(irq);
+
+ DEBUGASSERT(priv->handler);
+ if (enable)
+ {
+ ret = irq_attach(irq, priv->handler, priv->arg);
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: irq_attach() failed: %d\n", ret);
+ }
+
+ /* IRQ on rising edge */
+
+ esp32_gpioirqenable(irq, RISING);
+ }
+ else
+ {
+ /* Just keep interrupt disabled is enough */
+ }
+}
+
+/* REVISIT: Since the interrupt is completely torn down, not just disabled,
+ * in interrupt requests that occurs while the interrupt is disabled will be
+ * lost.
+ */
+
+static void up_reset(const struct w5500_lower_s *lower, bool reset)
+{
+ /* Take W5500 out of reset (active low) */
+
+ esp32_gpiowrite(GPIO_W5500_RESET, !reset);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: arm_netinitialize
+ ****************************************************************************/
+
+void up_netinitialize(void)
+{
+ struct spi_dev_s *spi;
+ int ret;
+
+ /* Configure the interrupt pin */
+
+ esp32_configgpio(GPIO_W5500_INTR, INPUT_FUNCTION_1 | PULLDOWN);
+
+ /* Configure the reset pin as output */
+
+ esp32_gpio_matrix_out(GPIO_W5500_RESET, SIG_GPIO_OUT_IDX, 0, 0);
+ esp32_configgpio(GPIO_W5500_RESET, OUTPUT_FUNCTION_1 |
+ INPUT_FUNCTION_1);
+
+ /* Assumptions:
+ * 1) W5500 pins were configured in up_spi.c early in the boot-up phase.
+ * 2) Clocking for the SPI1 peripheral was also provided earlier in
+ * boot-up.
+ */
+
+ spi = esp32_spibus_initialize(W5500_SPI_PORTNO);
+ if (!spi)
+ {
+ nerr("ERROR: Failed to initialize SPI port %d\n", W5500_SPI_PORTNO);
+ return;
+ }
+
+ /* Bind the SPI port to the W5500 driver */
+
+ ret = w5500_initialize(spi, &g_enclower.lower, W5500_DEVNO);
+ if (ret < 0)
+ {
+ nerr("ERROR: Failed to bind SPI port %d W5500 device %d: %d\n",
+ W5500_SPI_PORTNO, W5500_DEVNO, ret);
+ return;
+ }
+
+ ninfo("Bound SPI port %d to W5500 device %d\n",
+ W5500_SPI_PORTNO, W5500_DEVNO);
+}
+
