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https://github.com/apache/nuttx.git
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boards/arm/stm32/stm32f4discovery: Add Ethernet SPI ENC28J60 board support to STM32F4Discovery.
This commit is contained in:
Alan Carvalho de Assis
committed by
Gregory Nutt
Gregory Nutt
parent
f4d8c184b0
commit
69a9f3b8ec
@@ -42,6 +42,7 @@ Contents
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- SSD1289
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- UG-2864AMBAG01 / UG-2864HSWEG01
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- NiceRF LoRa (2AD66-LoRa V2)
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- Ethernet SPI Module ENC28J60
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- HCI UART
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- STM32F4Discovery-specific Configuration Options
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- BASIC
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@@ -652,6 +653,23 @@ First connect the GND and VCC (to 3.3V) and then connect the SCK label to PA5,
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connnect the MISO to PA6, connect the MOSI to PA7, connect the NSS to PD8,
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connect DIO0 to PD0 and finally connect NRESET to PD4.
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Ethernet SPI Module ENC28J60
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============================
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You can use an external Ethernet SPI Module ENC28J60 with STM32F4Discovery board.
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First connect the GND and VCC (to 3.3V). Note: according with ENC28J60 datasheet
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the Operating Voltage should be between 3.1V to 3.6V, but STM32F4Discover only
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supply 3.0V. You can modify your board to supply 3.3V: just remove the D3 diode
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and short-circuit the board pads where it was soldered).
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Connect the SCK label to PA5, connnect the SO to PA6, connect the SI to PA7,
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connect the CS to PA4, connect RST to PE1 and finally connect INT to PE4.
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The next step is to enable the ENC28J60 in the menuconfig ("make menuconfig")
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and the necessary Network configuration, you can use the
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boards/arm/stm32/fire-stm32v2/configs/nsh/defconfig as reference.
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HCI UART
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========
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@@ -81,6 +81,10 @@ ifeq ($(CONFIG_LCD_ST7567),y)
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CSRCS += stm32_st7567.c
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endif
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ifeq ($(CONFIG_ENC28J60),y)
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CSRCS += stm32_enc28j60.c
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endif
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ifeq ($(CONFIG_LPWAN_SX127X),y)
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CSRCS += stm32_sx127x.c
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endif
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@@ -0,0 +1,212 @@
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/****************************************************************************
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* boards/arm/stm32/fire-stm32v2/src/stm32_enc28j60.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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/* 2MBit SPI FLASH OR ENC28J60
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*
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* --- ------ -------------- -----------------------------------------------------
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* PIN NAME SIGNAL NOTES
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* --- ------ -------------- -----------------------------------------------------
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*
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* 29 PA4 PA4-SPI1-NSS 10Mbit ENC28J60, SPI 2M FLASH
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* 30 PA5 PA5-SPI1-SCK 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 31 PA6 PA6-SPI1-MISO 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 32 PA7 PA7-SPI1-MOSI 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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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 <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/net/enc28j60.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "up_arch.h"
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#include "up_internal.h"
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#include "stm32_spi.h"
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#include "stm32f4discovery.h"
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#ifdef CONFIG_ENC28J60
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* ENC28J60
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*
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* --- ------ -------------- -----------------------------------------------------
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* PIN NAME SIGNAL NOTES
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* --- ------ -------------- -----------------------------------------------------
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*
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* 29 PA4 PA4-SPI1-NSS 10Mbit ENC28J60, SPI 2M FLASH
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* 30 PA5 PA5-SPI1-SCK 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 31 PA6 PA6-SPI1-MISO 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 32 PA7 PA7-SPI1-MOSI 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 98 PE1 PE1-FSMC_NBL1 2.4" TFT + Touchscreen, 10Mbit EN28J60 Reset
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* 4 PE5 (no name) 10Mbps ENC28J60 Interrupt
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*/
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/* ENC28J60 is on SPI1 */
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#ifndef CONFIG_STM32_SPI1
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# error "Need CONFIG_STM32_SPI1 in the configuration"
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#endif
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/* SPI Assumptions **********************************************************/
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#define ENC28J60_SPI_PORTNO 1 /* On SPI1 */
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#define ENC28J60_DEVNO 0 /* Only one ENC28J60 */
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct stm32_lower_s
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{
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const struct enc_lower_s lower; /* Low-level MCU interface */
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xcpt_t handler; /* ENC28J60 interrupt handler */
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FAR void *arg; /* Argument that accompanies the interrupt */
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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 up_attach(FAR const struct enc_lower_s *lower, xcpt_t handler,
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FAR void *arg);
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static void up_enable(FAR const struct enc_lower_s *lower);
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static void up_disable(FAR const struct enc_lower_s *lower);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* The ENC28J60 normal provides interrupts to the MCU via a GPIO pin. The
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* following structure provides an MCU-independent mechanixm for controlling
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* the ENC28J60 GPIO interrupt.
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*/
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static struct stm32_lower_s g_enclower =
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{
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.lower =
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{
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.attach = up_attach,
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.enable = up_enable,
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.disable = up_disable
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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: struct enc_lower_s methods
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****************************************************************************/
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static int up_attach(FAR const struct enc_lower_s *lower, xcpt_t handler,
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FAR void *arg)
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{
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FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
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/* Just save the handler for use when the interrupt is enabled */
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priv->handler = handler;
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priv->arg = arg;
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return OK;
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}
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static void up_enable(FAR const struct enc_lower_s *lower)
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{
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FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
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DEBUGASSERT(priv->handler);
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stm32_gpiosetevent(GPIO_ENC28J60_INTR, false, true, true,
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priv->handler, priv->arg);
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}
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/* REVISIT: Since the interrupt is completely torn down, not just disabled,
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* in interrupt requests that occurs while the interrupt is disabled will be
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* lost.
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*/
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static void up_disable(FAR const struct enc_lower_s *lower)
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{
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stm32_gpiosetevent(GPIO_ENC28J60_INTR, false, true, true,
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NULL, NULL);
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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: up_netinitialize
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****************************************************************************/
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void up_netinitialize(void)
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{
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FAR struct spi_dev_s *spi;
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int ret;
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/* Assumptions:
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* 1) ENC28J60 pins were configured in up_spi.c early in the boot-up phase.
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* 2) Clocking for the SPI1 peripheral was also provided earlier in boot-up.
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*/
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spi = stm32_spibus_initialize(ENC28J60_SPI_PORTNO);
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if (!spi)
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{
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nerr("ERROR: Failed to initialize SPI port %d\n", ENC28J60_SPI_PORTNO);
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return;
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}
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/* Take ENC28J60 out of reset (active low)*/
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stm32_gpiowrite(GPIO_ENC28J60_RESET, true);
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/* Bind the SPI port to the ENC28J60 driver */
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ret = enc_initialize(spi, &g_enclower.lower, ENC28J60_DEVNO);
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if (ret < 0)
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{
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nerr("ERROR: Failed to bind SPI port %d ENC28J60 device %d: %d\n",
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ENC28J60_SPI_PORTNO, ENC28J60_DEVNO, ret);
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return;
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}
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ninfo("Bound SPI port %d to ENC28J60 device %d\n",
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ENC28J60_SPI_PORTNO, ENC28J60_DEVNO);
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}
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#endif /* CONFIG_ENC28J60 */
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@@ -69,6 +69,12 @@
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void weak_function stm32_spidev_initialize(void)
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{
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#ifdef CONFIG_ENC28J60
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stm32_configgpio(GPIO_ENC28J60_CS);
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stm32_configgpio(GPIO_ENC28J60_RESET);
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stm32_configgpio(GPIO_ENC28J60_INTR);
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#endif
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#ifdef CONFIG_STM32_SPI1
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stm32_configgpio(GPIO_CS_MEMS); /* MEMS chip select */
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#endif
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@@ -104,22 +110,23 @@ void weak_function stm32_spidev_initialize(void)
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* Name: stm32_spi1/2/3select and stm32_spi1/2/3status
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*
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* Description:
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* The external functions, stm32_spi1/2/3select and stm32_spi1/2/3status must be
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* provided by board-specific logic. They are implementations of the select
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* and status methods of the SPI interface defined by struct spi_ops_s (see
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* include/nuttx/spi/spi.h). All other methods (including stm32_spibus_initialize())
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* are provided by common STM32 logic. To use this common SPI logic on your
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* board:
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* The external functions, stm32_spi1/2/3select and stm32_spi1/2/3status
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* must be provided by board-specific logic. They are implementations of
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* the select and status methods of the SPI interface defined by struct
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* spi_ops_s (see include/nuttx/spi/spi.h). All other methods (including
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* stm32_spibus_initialize()) are provided by common STM32 logic. To use
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* this common SPI logic on your board:
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*
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* 1. Provide logic in stm32_boardinitialize() to configure SPI chip select
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* pins.
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* 2. Provide stm32_spi1/2/3select() and stm32_spi1/2/3status() functions in your
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* board-specific logic. These functions will perform chip selection and
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* status operations using GPIOs in the way your board is configured.
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* 2. Provide stm32_spi1/2/3select() and stm32_spi1/2/3status() functions
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* in your board-specific logic. These functions will perform chip
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* selection and status operations using GPIOs in the way your board
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* is configured.
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* 3. Add a calls to stm32_spibus_initialize() in your low level application
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* initialization logic
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* 4. The handle returned by stm32_spibus_initialize() may then be used to bind the
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* SPI driver to higher level logic (e.g., calling
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* 4. The handle returned by stm32_spibus_initialize() may then be used to
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* bind the SPI driver to higher level logic (e.g., calling
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* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
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* the SPI MMC/SD driver).
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*
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@@ -130,24 +137,36 @@ void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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#ifdef CONFIG_ENC28J60
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if (devid == SPIDEV_ETHERNET(0))
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{
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/* Set the GPIO low to select and high to de-select */
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stm32_gpiowrite(GPIO_ENC28J60_CS, !selected);
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}
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#endif
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#ifdef CONFIG_LPWAN_SX127X
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if (devid == SPIDEV_LPWAN(0))
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{
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stm32_gpiowrite(GPIO_SX127X_CS, !selected);
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}
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#endif
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#ifdef CONFIG_LCD_ST7567
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if (devid == SPIDEV_DISPLAY(0))
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{
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stm32_gpiowrite(STM32_LCD_CS, !selected);
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}
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#endif
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#if defined(CONFIG_LCD_MAX7219) || defined(CONFIG_LEDS_MAX7219)
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if (devid == SPIDEV_DISPLAY(0))
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{
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stm32_gpiowrite(GPIO_MAX7219_CS, !selected);
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}
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#endif
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#if defined(CONFIG_LCD_UG2864AMBAG01) || defined(CONFIG_LCD_UG2864HSWEG01) || \
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defined(CONFIG_LCD_SSD1351)
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if (devid == SPIDEV_DISPLAY(0))
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@@ -187,6 +206,7 @@ void stm32_spi2select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
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stm32_gpiowrite(GPIO_MAX31855_CS, !selected);
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}
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#endif
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#if defined(CONFIG_SENSORS_MAX6675)
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if (devid == SPIDEV_TEMPERATURE(0))
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{
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@@ -213,6 +233,7 @@ uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, uint32_t devid)
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ret = stm32_gpioread(GPIO_MMCSD_NCD) ? 0 : 1;
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}
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#endif
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return ret;
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}
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#endif
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@@ -275,6 +296,7 @@ int stm32_spi1cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd)
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return OK;
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}
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#endif
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#if defined(CONFIG_LCD_UG2864AMBAG01) || defined(CONFIG_LCD_UG2864HSWEG01) || \
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defined(CONFIG_LCD_SSD1351)
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if (devid == SPIDEV_DISPLAY(0))
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@@ -247,7 +247,7 @@
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#define GPIO_SX127X_DIO0 (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTD|GPIO_PIN0)
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#define GPIO_SX127X_RESET (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_OUTPUT_CLEAR|\
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GPIO_SPEED_50MHz|GPIO_PORTD|GPIO_PIN4)
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GPIO_SPEED_50MHz|GPIO_PORTD|GPIO_PIN4)
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/* PWM
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*
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@@ -286,6 +286,15 @@
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#define GPIO_CS_XEN1210 (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_ENC28J60_CS (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_ENC28J60_RESET (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
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GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN1)
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#define GPIO_ENC28J60_INTR (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|\
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GPIO_OPENDRAIN|GPIO_PORTE|GPIO_PIN4)
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/* USB OTG FS
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*
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* PA9 OTG_FS_VBUS VBUS sensing (also connected to the green LED)
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@@ -407,7 +416,7 @@
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#ifndef __ASSEMBLY__
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/****************************************************************************
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* Public Functions
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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@@ -487,7 +496,7 @@ int stm32_bmp180initialize(FAR const char *devpath);
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int stm32_lis3dshinitialize(FAR const char *devpath);
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#endif
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/*****************************************************************************
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/****************************************************************************
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* Name: stm32_lpwaninitialize
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*
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* Description:
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