/* * Copyright (C) 2010 by Ulrich Prinz (uprinz2@netscape.net) * Copyright (C) 2010 by Rittal GmbH & Co. KG. All rights reserved. * Copyright (C) 2012 Uwe Bonnes(bon@elektron.ikp.physik.tu-darmstadt.de). * * All rights reserved. * * 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 of the copyright holders nor the names of * 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. * * For additional information see http://www.ethernut.de/ */ /* * \verbatim * $Id: stm32_can1.c 5639 2014-04-07 13:58:53Z u_bonnes $ * \endverbatim */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef CANBUS1_REMAP_CAN #define CANBUS1_REMAP_CAN 0 #endif /*! * \brief CANBUS1 GPIO configuartion and assignment. */ #if defined(MCU_STM32F1) #if (CANBUS1_REMAP_CAN == 1) #define CANBUS_REMAP AFIO_MAPR_CAN_REMAP_REMAP2 #define CAN1RX_GPIO_PORT NUTGPIO_PORTB #define CAN1TX_GPIO_PORT NUTGPIO_PORTB #define CAN1RX_GPIO_PIN 8 #define CAN1TX_GPIO_PIN 9 #elif (CANBUS1_REMAP_CAN == 2) #define CANBUS_REMAP AFIO_MAPR_CAN_REMAP_REMAP3 #define CAN1RX_GPIO_PORT NUTGPIO_PORTD #define CAN1TX_GPIO_PORT NUTGPIO_PORTD #define CAN1RX_GPIO_PIN 0 #define CAN1TX_GPIO_PIN 1 #else #undef CANBUS_REMAP #define CANBUS_REMAP AFIO_MAPR_CAN_REMAP_REMAP1 #define CAN1RX_GPIO_PORT NUTGPIO_PORTA #define CAN1TX_GPIO_PORT NUTGPIO_PORTA #define CAN1RX_GPIO_PIN 11 #define CAN1TX_GPIO_PIN 12 #endif #else /*L1/F2/F3/F4*/ #if !defined(CANBUS1_TX_PIN) #if (CANBUS1_REMAP_CAN == 0) #define CAN1TX_GPIO_PORT NUTGPIO_PORTA #define CAN1TX_GPIO_PIN 12 #elif (CANBUS1_REMAP_CAN == 1) #define CAN1TX_GPIO_PORT NUTGPIO_PORTB #define CAN1TX_GPIO_PIN 9 #elif (CANBUS1_REMAP_CAN == 2) #define CAN1TX_GPIO_PORT NUTGPIO_PORTD #define CAN1TX_GPIO_PIN 1 #else #error "Illegal CANBUS1_REMAP_CAN value" #endif #elif (CANBUS1_TX_PIN == 12) #define CAN1TX_GPIO_PORT NUTGPIO_PORTA #define CAN1TX_GPIO_PIN 12 #elif (CANBUS1_TX_PIN == 9) #define CAN1TX_GPIO_PORT NUTGPIO_PORTB #define CAN1TX_GPIO_PIN 9 #elif (CANBUS1_TX_PIN == 1) #define CAN1TX_GPIO_PORT NUTGPIO_PORTD #define CAN1TX_GPIO_PIN 1 #else #errror "Illegal CAN1 TX value" #endif #if !defined(CANBUS1_RX_PIN) #if (CANBUS1_REMAP_CAN == 0) #define CAN1RX_GPIO_PORT NUTGPIO_PORTA #define CAN1RX_GPIO_PIN 11 #elif (CANBUS1_REMAP_CAN == 1) #define CAN1RX_GPIO_PORT NUTGPIO_PORTB #define CAN1RX_GPIO_PIN 8 #elif (CANBUS1_REMAP_CAN == 2) #define CAN1RX_GPIO_PORT NUTGPIO_PORTD #define CAN1RX_GPIO_PIN 0 #else #error "Illegal CANBUS1_REMAP_CAN value" #endif #elif (CANBUS1_RX_PIN == 11) #define CAN1RX_GPIO_PORT NUTGPIO_PORTA #define CAN1RX_GPIO_PIN 11 #elif (CANBUS1_RX_PIN == 8) #define CAN1RX_GPIO_PORT NUTGPIO_PORTB #define CAN1RX_GPIO_PIN 8 #elif (CANBUS1_RX_PIN == 0) #define CAN1RX_GPIO_PORT NUTGPIO_PORTD #define CAN1RX_GPIO_PIN 0 #else #errror "Illegal CAN1 RX value" #endif #endif #if defined(MCU_STM32F3) #define F3_GPIO_AF_CAN1(x) (x == NUTGPIO_PORTD)?7:9 #endif /*! * \brief Processor specific Hardware Initiliaization * */ int Stm32CanHw1Init(void) { #if defined (CAN2_ACCEPTANCE_FILTERS) uint32_t fmr; #endif /* Enable CAN Bus 1 peripheral clock. */ CM3BBSET(RCC_BASE, RCC_TypeDef, APB1ENR, _BI32(RCC_APB1ENR_CAN1EN)); /* Reset CAN Bus 1 IP */ CM3BBSET(RCC_BASE, RCC_TypeDef, APB1RSTR, _BI32(RCC_APB1RSTR_CAN1RST)); CM3BBCLR(RCC_BASE, RCC_TypeDef, APB1RSTR, _BI32(RCC_APB1RSTR_CAN1RST)); #if defined (CAN2_ACCEPTANCE_FILTERS) /* Set the CAN1/CAN2 Filter split */ fmr = CAN1->FMR; fmr &= ~0x3f00; fmr |= CAN2_ACCEPTANCE_FILTERS<<8; CAN1->FMR = fmr; #endif /* Setup Related GPIOs. */ GpioPinConfigSet(CAN1RX_GPIO_PORT, CAN1RX_GPIO_PIN, GPIO_CFG_PULLUP|GPIO_CFG_PERIPHAL); GpioPinConfigSet(CAN1TX_GPIO_PORT, CAN1TX_GPIO_PIN, GPIO_CFG_OUTPUT|GPIO_CFG_PERIPHAL); #if defined (MCU_STM32F1) AFIO->MAPR &= ~AFIO_MAPR_CAN_REMAP; AFIO->MAPR |= CANBUS_REMAP; #elif defined (MCU_STM32F3) GPIO_PinAFConfig((GPIO_TypeDef*) CAN1RX_GPIO_PORT, CAN1RX_GPIO_PIN, F3_GPIO_AF_CAN1(CAN1RX_GPIO_PORT)); GPIO_PinAFConfig((GPIO_TypeDef*) CAN1TX_GPIO_PORT, CAN1TX_GPIO_PIN, F3_GPIO_AF_CAN1(CAN1RX_GPIO_PORT)); #else GPIO_PinAFConfig((GPIO_TypeDef*) CAN1RX_GPIO_PORT, CAN1RX_GPIO_PIN, GPIO_AF_CAN1); GPIO_PinAFConfig((GPIO_TypeDef*) CAN1TX_GPIO_PORT, CAN1TX_GPIO_PIN, GPIO_AF_CAN1); #endif return 0; } NUTCANBUS Stm32CanBus1 = { CAN1_BASE, CM3BB_BASE(CAN1_BASE), &sig_CAN1_RX0, &sig_CAN1_TX, &sig_CAN1_SCE, 0, Stm32CanHw1Init, }; NUTCANBUS Stm32CanBus1C = { CAN1_BASE, CM3BB_BASE(CAN1_BASE), &sig_CAN1_RX1, 0, 0, 0, 0, };