/**************************************************************************** * configs/fire-stm32v2/src/up_enc28j60.c * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /* 2MBit SPI FLASH OR ENC28J60 * * --- ------ -------------- ----------------------------------------------------- * PIN NAME SIGNAL NOTES * --- ------ -------------- ----------------------------------------------------- * * 29 PA4 PA4-SPI1-NSS 10Mbit ENC28J60, SPI 2M FLASH * 30 PA5 PA5-SPI1-SCK 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH * 31 PA6 PA6-SPI1-MISO 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH * 32 PA7 PA7-SPI1-MOSI 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH */ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include "chip.h" #include "up_arch.h" #include "up_internal.h" #include "fire_internal.h" #ifdef CONFIG_NET_ENC28J60 /**************************************************************************** * Definitions ****************************************************************************/ /* Configuration ************************************************************/ /* ENC28J60 * * --- ------ -------------- ----------------------------------------------------- * PIN NAME SIGNAL NOTES * --- ------ -------------- ----------------------------------------------------- * * 29 PA4 PA4-SPI1-NSS 10Mbit ENC28J60, SPI 2M FLASH * 30 PA5 PA5-SPI1-SCK 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH * 31 PA6 PA6-SPI1-MISO 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH * 32 PA7 PA7-SPI1-MOSI 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH * 98 PE1 PE1-FSMC_NBL1 2.4" TFT + Touchscreen, 10Mbit EN28J60 Reset * 4 PE5 (no name) 10Mbps ENC28J60 Interrupt */ /* ENC28J60 is on SPI1 */ #ifndef CONFIG_STM32_SPI1 # error "Need CONFIG_STM32_SPI1 in the configuration" #endif /* SPI Assumptions **********************************************************/ #define ENC28J60_SPI_PORTNO 1 /* On SPI1 */ #define ENC28J60_DEVNO 0 /* Only one ENC28J60 */ /**************************************************************************** * Private Types ****************************************************************************/ struct stm32_lower_s { const struct enc_lower_s lower; /* Low-level MCU interface */ xcpt_t handler; /* ENC28J60 interrupt handler */ }; /**************************************************************************** * Private Function Prototypes ****************************************************************************/ static int up_attach(FAR struct enc_lower_s *lower, xcpt_t handler); static void up_enable(FAR struct enc_lower_s *lower); static void up_disable(FAR struct enc_lower_s *lower); /**************************************************************************** * Private Data ****************************************************************************/ /* The ENC28J60 normal provides interrupts to the MCU via a GPIO pin. The * following structure provides an MCU-independent mechanixm for controlling * the ENC28J60 GPIO interrupt. */ static const struct enc_lower_s g_enclower = { { .attach = up_attach, .enable = up_enable, .disable = up_disable } }; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: struct enc_lower_s methods ****************************************************************************/ static int up_attach(FAR struct enc_lower_s *lower, xcpt_t handler) { FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower; /* Just save the handler for use when the interrupt is enabled */ priv-handler = handler; return OK; } static void up_enable(FAR struct enc_lower_s *lower) { FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower; DEBUGASSERT(priv->handler); (void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, true, true, true, priv-handler); } static void up_disable(FAR struct enc_lower_s *lower) { (void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, true, true, true, NULL); } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: up_netinitialize ****************************************************************************/ void up_netinitialize(void) { FAR struct spi_dev_s *spi; uint16_t reg16; int ret; /* Assumptions: * 1) ENC28J60 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 = up_spiinitialize(ENC28J60_SPI_PORTNO); if (!spi) { nlldbg("Failed to initialize SPI port %d\n", ENC28J60_SPI_PORTNO); return; } /* Take ENC28J60 out of reset (active low)*/ stm32_gpiowrite(GPIO_ENC28J60_RESET, true); /* Bind the SPI port to the ENC28J60 driver */ ret = enc_initialize(spi, ENC28J60_DEVNO, &g_enclower); if (ret < 0) { nlldbg("Failed to bind SPI port %d ENC28J60 device %d: %d\n", ENC28J60_SPI_PORTNO, ENC28J60_DEVNO, ret); return; } nllvdbg("Bound SPI port %d to ENC28J60 device %d\n", ENC28J60_SPI_PORTNO, ENC28J60_DEVNO); } #endif /* CONFIG_NET_ENC28J60 */