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206 lines
7.8 KiB
206 lines
7.8 KiB
/************************************************************************************ |
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* configs/sam3u-ek/include/board.h |
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* include/arch/board/board.h |
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* |
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* Copyright (C) 2009-2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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************************************************************************************/ |
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#ifndef __ARCH_BOARD_BOARD_H |
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#define __ARCH_BOARD_BOARD_H |
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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 "sam3u_internal.h" |
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#ifndef __ASSEMBLY__ |
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# include <stdint.h> |
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# ifdef CONFIG_GPIO_IRQ |
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# include <arch/irq.h> |
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# endif |
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#endif |
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/************************************************************************************ |
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* Definitions |
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************************************************************************************/ |
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/* Clocking *************************************************************************/ |
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/* After power-on reset, the sam3u device is running on a 4MHz internal RC. These |
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* definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=48MHz. |
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*/ |
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/* Main oscillator register settings */ |
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#define BOARD_CKGR_MOR_MOSCXTST (63 << CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */ |
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/* PLLA configuration */ |
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#define BOARD_CKGR_PLLAR_MULA (7 << CKGR_PLLAR_MULA_SHIFT) |
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#define BOARD_CKGR_PLLAR_STMODE CKGR_PLLAR_STMODE_FAST |
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#define BOARD_CKGR_PLLAR_PLLACOUNT (63 << CKGR_PLLAR_PLLACOUNT_SHIFT) |
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#define BOARD_CKGR_PLLAR_DIVA CKGR_PLLAR_DIVA_BYPASS |
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/* PMC master clock register settings */ |
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#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA |
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#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2 |
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/* USB UTMI PLL start-up time */ |
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#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << CKGR_UCKR_UPLLCOUNT_SHIFT) |
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/* Resulting frequencies */ |
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#define SAM3U_MAINOSC_FREQUENCY (12000000) |
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#define SAM3U_MCK_FREQUENCY (48000000) |
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#define SAM3U_PLLA_FREQUENCY (96000000) |
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#define SAM3U_CPU_FREQUENCY (48000000) |
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/* HSMCI clocking |
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* |
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* Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock (MCK) |
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* divided by (2*(CLKDIV+1)). |
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* |
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* MCI_SPEED = MCK / (2*(CLKDIV+1)) |
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* CLKDIV = MCI / MCI_SPEED / 2 - 1 |
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*/ |
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/* MCK = 48MHz, CLKDIV = 59, MCI_SPEED = 48MHz / 2 * (59+1) = 400 KHz */ |
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#define HSMCI_INIT_CLKDIV (59 << HSMCI_MR_CLKDIV_SHIFT) |
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/* MCK = 48MHz, CLKDIV = 1, MCI_SPEED = 48MHz / 2 * (1+1) = 12 MHz */ |
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#define HSMCI_MMCXFR_CLKDIV (3 << HSMCI_MR_CLKDIV_SHIFT) |
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/* MCK = 48MHz, CLKDIV = 0, MCI_SPEED = 48MHz / 2 * (0+1) = 24 MHz */ |
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#define HSMCI_SDXFR_CLKDIV (0 << HSMCI_MR_CLKDIV_SHIFT) |
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#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV |
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/* LED definitions ******************************************************************/ |
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#define LED_STARTED 0 /* LED0=OFF LED1=OFF LED2=OFF */ |
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#define LED_HEAPALLOCATE 1 /* LED0=OFF LED1=OFF LED2=ON */ |
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#define LED_IRQSENABLED 2 /* LED0=OFF LED1=ON LED2=OFF */ |
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#define LED_STACKCREATED 3 /* LED0=OFF LED1=ON LED2=ON */ |
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#define LED_INIRQ 4 /* LED0=XXX LED1=TOG LED2=XXX */ |
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#define LED_SIGNAL 5 /* LED0=XXX LED1=XXX LED2=TOG */ |
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#define LED_ASSERTION 6 /* LED0=TOG LED1=XXX LED2=XXX */ |
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#define LED_PANIC 7 /* LED0=TOG LED1=XXX LED2=XXX */ |
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/* Button definitions ***************************************************************/ |
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#define BUTTON1 1 /* Bit 0: Button 1 */ |
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#define BUTTON2 2 /* Bit 1: Button 2 */ |
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/************************************************************************************ |
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* Public Data |
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************************************************************************************/ |
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#ifndef __ASSEMBLY__ |
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#undef EXTERN |
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#if defined(__cplusplus) |
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#define EXTERN extern "C" |
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extern "C" { |
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#else |
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#define EXTERN extern |
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#endif |
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/************************************************************************************ |
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* Public Function Prototypes |
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************************************************************************************/ |
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/************************************************************************************ |
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* Name: sam3u_boardinitialize |
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* |
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* Description: |
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* All SAM3U architectures must provide the following entry point. This entry point |
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* is called early in the intitialization -- after all memory has been configured |
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* and mapped but before any devices have been initialized. |
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* |
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************************************************************************************/ |
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EXTERN void sam3u_boardinitialize(void); |
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/************************************************************************************ |
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* Name: up_buttoninit |
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* |
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* Description: |
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* up_buttoninit() must be called to initialize button resources. After that, |
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* up_buttons() may be called to collect the current state of all buttons or |
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* up_irqbutton() may be called to register button interrupt handlers. |
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* |
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************************************************************************************/ |
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#ifdef CONFIG_ARCH_BUTTONS |
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EXTERN void up_buttoninit(void); |
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/************************************************************************************ |
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* Name: up_buttons |
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* |
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* Description: |
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* After up_buttoninit() has been called, up_buttons() may be called to collect |
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* the state of all buttons. up_buttons() returns an 8-bit bit set with each bit |
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* associated with a button. See the BUTTON* definitions above for the meaning of |
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* each bit in the returned value. |
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* |
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************************************************************************************/ |
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EXTERN uint8_t up_buttons(void); |
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/************************************************************************************ |
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* Name: up_irqbutton |
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* |
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* Description: |
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* This function may be called to register an interrupt handler that will be |
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* called when a button is depressed or released. The ID value is one of the |
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* BUTTON* definitions provided above. The previous interrupt handler address is |
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* returned (so that it may restored, if so desired). |
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* |
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************************************************************************************/ |
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#ifdef CONFIG_GPIOA_IRQ |
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EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler); |
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#endif |
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#endif /* CONFIG_ARCH_BUTTONS */ |
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#undef EXTERN |
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#if defined(__cplusplus) |
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} |
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#endif |
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#endif /* __ASSEMBLY__ */ |
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#endif /* __ARCH_BOARD_BOARD_H */
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