rp2040: Add lower layer driver for WIZnet W5500
Courtesy of Adam Comley Signed-off-by: Michael Jung <michael.jung@secore.ly>
This commit is contained in:
Michael Jung
Xiang Xiao
parent
a70c0a90a7
commit
9c705828bc
@ -579,3 +579,35 @@ config RP2040_ENC28J60_RESET_GPIO
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range -1 29
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endif # ENC28J60
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if NET_W5500
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config RP2040_W5500_SPI_CH
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int "W5500 SPI channel number"
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default 0
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range 0 1
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---help---
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SPI device for W5500 chip.
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config RP2040_W5500_SPI_FREQ
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int "W5500 SPI frequency (kHz)"
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default 40000
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range 100 40000
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---help---
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SPI frequency for W5500 chip.
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config RP2040_W5500_RST_GPIO
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int "W5500 reset GPIO pin"
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default 20
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range 0 29
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---help---
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RP2040 pin number that connects to W5500 Reset
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config RP2040_W5500_INT_GPIO
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int "W5500 interrupt GPIO pin"
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default 21
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range 0 29
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---help---
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RP2040 pin number that connects to W5500 Interrupt
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endif # NET_W5500
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@ -95,6 +95,10 @@ ifeq ($(CONFIG_BOARDCTL_UNIQUEID),y)
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CSRCS += rp2040_uniqueid.c
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endif
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ifeq ($(CONFIG_NET_W5500),y)
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CSRCS += rp2040_w5500.c
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endif
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DEPPATH += --dep-path src
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VPATH += :src
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src
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@ -181,4 +181,17 @@ void rp2040_common_initialize(void)
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rp2040_gpio_setdir(CONFIG_RP2040_SPI1_CS_GPIO, true);
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rp2040_gpio_put(CONFIG_RP2040_SPI1_CS_GPIO, true);
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#endif
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#ifdef CONFIG_NET_W5500
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/* W5500 Reset output */
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rp2040_gpio_setdir(CONFIG_RP2040_W5500_RST_GPIO, true);
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rp2040_gpio_put(CONFIG_RP2040_W5500_RST_GPIO, false);
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rp2040_gpio_set_function(CONFIG_RP2040_W5500_RST_GPIO,
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RP2040_GPIO_FUNC_SIO);
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/* W5500 Interrupt input */
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rp2040_gpio_init(CONFIG_RP2040_W5500_INT_GPIO);
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#endif
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}
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209
boards/arm/rp2040/common/src/rp2040_w5500.c
Normal file
209
boards/arm/rp2040/common/src/rp2040_w5500.c
Normal file
@ -0,0 +1,209 @@
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/****************************************************************************
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* boards/arm/rp2040/common/src/rp2040_w5500.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/net/w5500.h>
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#include "rp2040_spi.h"
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#include "rp2040_gpio.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Sanity Check *************************************************************/
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#if (CONFIG_RP2040_W5500_SPI_CH == 0) && !defined(CONFIG_RP2040_SPI0)
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# error "W5500 configured to use SPI0, but SPI0 is not enabled"
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#endif
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#if (CONFIG_RP2040_W5500_SPI_CH == 1) && !defined(CONFIG_RP2040_SPI1)
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# error "W5500 configured to use SPI1, but SPI1 is not enabled"
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#endif
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/* SPI Assumptions **********************************************************/
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#define W5500_DEVNO 0 /* Only one W5500 */
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct rp2040_lower_s
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{
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const struct w5500_lower_s lower; /* Low-level MCU interface */
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xcpt_t handler; /* W5500 interrupt handler */
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void *arg; /* Argument that accompanies IRQ */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int rp2040_attach(const struct w5500_lower_s *lower, xcpt_t handler,
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void *arg);
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static void rp2040_enable(const struct w5500_lower_s *lower, bool enable);
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static void rp2040_reset(const struct w5500_lower_s *lower, bool reset);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct rp2040_lower_s g_enclower =
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{
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.lower =
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{
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.frequency = (CONFIG_RP2040_W5500_SPI_FREQ * 1000),
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.spidevid = 0,
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.mode = SPIDEV_MODE0,
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.attach = rp2040_attach,
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.enable = rp2040_enable,
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.reset = rp2040_reset,
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},
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.handler = NULL,
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.arg = NULL
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: rp2040_attach
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*
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* Description:
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* Attaches the interrupt handler to the GPIO.
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*
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* Input Parameters:
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* lower - W5500 lower half
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* handler - The handler function
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* arg - Argument to pass to handler
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*
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* Returned Value:
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* Zero (OK) is returned on success.
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*
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****************************************************************************/
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static int rp2040_attach(const struct w5500_lower_s *lower,
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xcpt_t handler,
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void *arg)
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{
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struct rp2040_lower_s *priv = (struct rp2040_lower_s *)lower;
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priv->handler = handler;
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priv->arg = arg;
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rp2040_gpio_irq_attach(CONFIG_RP2040_W5500_INT_GPIO,
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RP2040_GPIO_INTR_LEVEL_LOW,
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priv->handler, priv->arg);
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return OK;
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}
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/****************************************************************************
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* Name: rp2040_enable
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*
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* Description:
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* Enables the W5500 interrupt handler.
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*
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* Input Parameters:
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* lower - W5500 lower half
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* enable - true to enable, false to disable
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*
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****************************************************************************/
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static void rp2040_enable(const struct w5500_lower_s *lower, bool enable)
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{
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struct rp2040_lower_s *priv = (struct rp2040_lower_s *)lower;
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DEBUGASSERT(priv->handler);
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if (enable)
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{
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rp2040_gpio_enable_irq(CONFIG_RP2040_W5500_INT_GPIO);
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}
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else
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{
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rp2040_gpio_disable_irq(CONFIG_RP2040_W5500_INT_GPIO);
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}
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}
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/****************************************************************************
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* Name: rp2040_reset
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*
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* Description:
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* Brings the W5500 in or out of reset.
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*
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* Input Parameters:
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* lower - W5500 lower half
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* reset - true to reset, false to enable
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*
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****************************************************************************/
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static void rp2040_reset(const struct w5500_lower_s *lower, bool reset)
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{
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rp2040_gpio_put(CONFIG_RP2040_W5500_RST_GPIO, !reset);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: arm_netinitialize
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*
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* Description:
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* Initializes the SPI and W5500 drivers.
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*
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****************************************************************************/
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void arm_netinitialize(void)
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{
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struct spi_dev_s *spi;
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int ret;
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spi = rp2040_spibus_initialize(CONFIG_RP2040_W5500_SPI_CH);
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if (!spi)
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{
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nerr("ERROR: Failed to initialize SPI port %d\n",
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CONFIG_RP2040_W5500_SPI_CH);
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return;
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}
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ret = w5500_initialize(spi, &g_enclower.lower, W5500_DEVNO);
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if (ret < 0)
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{
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nerr("ERROR: Failed to bind SPI%d W5500 device %d: %d\n",
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CONFIG_RP2040_W5500_SPI_CH, W5500_DEVNO, ret);
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return;
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}
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ninfo("Bound SPI%d to W5500 device %d\n",
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CONFIG_RP2040_W5500_SPI_CH, W5500_DEVNO);
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}
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