/************************************************************************************ * configs/sam3u-ek/include/board.h * * Copyright (C) 2009-2011, 2013 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. * ************************************************************************************/ #ifndef __ARCH_BOARD_BOARD_H #define __ARCH_BOARD_BOARD_H /************************************************************************************ * Included Files ************************************************************************************/ #include #ifndef __ASSEMBLY__ # include # ifdef CONFIG_GPIO_IRQ # include # endif #endif /************************************************************************************ * Definitions ************************************************************************************/ /* Clocking *************************************************************************/ /* After power-on reset, the sam3u device is running on a 4MHz internal RC. These * definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=48MHz. */ /* Main oscillator register settings */ #define BOARD_CKGR_MOR_MOSCXTST (63 << PMC_CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */ /* PLLA configuration */ #define BOARD_CKGR_PLLAR_MUL (7 << PMC_CKGR_PLLAR_MUL_SHIFT) #define BOARD_CKGR_PLLAR_STMODE PMC_CKGR_PLLAR_STMODE_FAST #define BOARD_CKGR_PLLAR_COUNT (63 << PMC_CKGR_PLLAR_COUNT_SHIFT) #define BOARD_CKGR_PLLAR_DIV PMC_CKGR_PLLAR_DIV_BYPASS /* PMC master clock register settings */ #define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA #define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2 /* USB UTMI PLL start-up time */ #define BOARD_CKGR_UCKR_UPLLCOUNT (3 << PMC_CKGR_UCKR_UPLLCOUNT_SHIFT) /* Resulting frequencies */ #define SAM_MAINOSC_FREQUENCY (12000000) #define SAM_MCK_FREQUENCY (48000000) #define SAM_PLLA_FREQUENCY (96000000) #define SAM_CPU_FREQUENCY (48000000) /* HSMCI clocking * * Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock (MCK) * divided by (2*(CLKDIV+1)). * * MCI_SPEED = MCK / (2*(CLKDIV+1)) * CLKDIV = MCI / MCI_SPEED / 2 - 1 */ /* MCK = 48MHz, CLKDIV = 59, MCI_SPEED = 48MHz / 2 * (59+1) = 400 KHz */ #define HSMCI_INIT_CLKDIV (59 << HSMCI_MR_CLKDIV_SHIFT) /* MCK = 48MHz, CLKDIV = 1, MCI_SPEED = 48MHz / 2 * (1+1) = 12 MHz */ #define HSMCI_MMCXFR_CLKDIV (3 << HSMCI_MR_CLKDIV_SHIFT) /* MCK = 48MHz, CLKDIV = 0, MCI_SPEED = 48MHz / 2 * (0+1) = 24 MHz */ #define HSMCI_SDXFR_CLKDIV (0 << HSMCI_MR_CLKDIV_SHIFT) #define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV /* LED definitions ******************************************************************/ #define LED_STARTED 0 /* LED0=OFF LED1=OFF LED2=OFF */ #define LED_HEAPALLOCATE 1 /* LED0=OFF LED1=OFF LED2=ON */ #define LED_IRQSENABLED 2 /* LED0=OFF LED1=ON LED2=OFF */ #define LED_STACKCREATED 3 /* LED0=OFF LED1=ON LED2=ON */ #define LED_INIRQ 4 /* LED0=XXX LED1=TOG LED2=XXX */ #define LED_SIGNAL 5 /* LED0=XXX LED1=XXX LED2=TOG */ #define LED_ASSERTION 6 /* LED0=TOG LED1=XXX LED2=XXX */ #define LED_PANIC 7 /* LED0=TOG LED1=XXX LED2=XXX */ /* Button definitions ***************************************************************/ #define BUTTON1 1 /* Bit 0: Button 1 */ #define BUTTON2 2 /* Bit 1: Button 2 */ /************************************************************************************ * Public Data ************************************************************************************/ #ifndef __ASSEMBLY__ #undef EXTERN #if defined(__cplusplus) #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /************************************************************************************ * Public Function Prototypes ************************************************************************************/ /************************************************************************************ * Name: sam_boardinitialize * * Description: * All SAM3U architectures must provide the following entry point. This entry point * is called early in the intitialization -- after all memory has been configured * and mapped but before any devices have been initialized. * ************************************************************************************/ void sam_boardinitialize(void); /************************************************************************************ * Name: up_buttoninit * * Description: * up_buttoninit() must be called to initialize button resources. After that, * up_buttons() may be called to collect the current state of all buttons or * up_irqbutton() may be called to register button interrupt handlers. * ************************************************************************************/ #ifdef CONFIG_ARCH_BUTTONS void up_buttoninit(void); /************************************************************************************ * Name: up_buttons * * Description: * After up_buttoninit() has been called, up_buttons() may be called to collect * the state of all buttons. up_buttons() returns an 8-bit bit set with each bit * associated with a button. See the BUTTON* definitions above for the meaning of * each bit in the returned value. * ************************************************************************************/ uint8_t up_buttons(void); /************************************************************************************ * Name: up_irqbutton * * Description: * This function may be called to register an interrupt handler that will be * called when a button is depressed or released. The ID value is one of the * BUTTON* definitions provided above. The previous interrupt handler address is * returned (so that it may restored, if so desired). * ************************************************************************************/ #ifdef CONFIG_GPIOA_IRQ xcpt_t up_irqbutton(int id, xcpt_t irqhandler); #endif #endif /* CONFIG_ARCH_BUTTONS */ #undef EXTERN #if defined(__cplusplus) } #endif #endif /* __ASSEMBLY__ */ #endif /* __ARCH_BOARD_BOARD_H */