Add Kinetis clocking logic and some UART logic. Add K60 Tower configuration

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3876 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 168 insertions, 0 deletions

diff --git a/nuttx/configs/twr-k60n512/include/board.h b/nuttx/configs/twr-k60n512/include/board.h
new file mode 100755
index 000000000..3cad12ac4
--- /dev/null
+++ b/nuttx/configs/twr-k60n512/include/board.h
@@ -0,0 +1,168 @@
+/************************************************************************************
+ * configs/twr-k60n512/include/board.h
+ * include/arch/board/board.h
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 <nuttx/config.h>
+#ifndef __ASSEMBLY__
+# include <stdint.h>
+#endif
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Clocking *************************************************************************/
+/* The K60 tower board uses a 50MHz external clock */
+
+#define BOARD_EXTCLOCK       1              /* External clock */
+#define BOARD_EXTAL_FREQ     50000000       /* 50MHz Oscillator */
+#define BOARD_XTAL32_FREQ    32768          /* 32KHz RTC Oscillator */
+
+/* PLL Configuration.  Either the external clock or crystal frequency is used to
+ * select the PRDIV value. Only reference clock frequencies are supported that will
+ * produce a 2MHz reference clock to the PLL.
+ *
+ *   PLL Input frequency:   PLLIN  = REFCLK/PRDIV = 50MHz/25 = 2MHz
+ *   PLL Output frequency:  PLLOUT = PLLIN*VDIV   = 2Mhz*48 = 96MHz
+ *   MCG Frequency:         PLLOUT = 96MHz
+ */
+
+#define BOARD_PRDIV          25             /* PLL External Reference Divider */
+#define BOARD_VDIV           48             /* PLL VCO Divider (frequency multiplier) */
+
+#define BOARD_PLLIN_FREQ     (BOARD_EXTAL_FREQ / BOARD_PRDIV)
+#define BOARD_PLLOUT_FREQ    (BOARD_EXTAL_FREQ * BOARD_VDIV)
+#define BOARD_MCG_FREQ       BOARD_PLL_FREQ
+
+/* SIM CLKDIV1 dividers */
+
+#define BOARD_OUTDIV1        1              /* Core        = MCG, 96MHz */
+#define BOARD_OUTDIV2        2              /* Bus         = MCG/2, 48MHz */
+#define BOARD_OUTDIV3        2              /* FlexBus     = MCG/2, 48MHz */
+#define BOARD_OUTDIV4        4              /* Flash clock = MCG/4, 24MHz */
+
+#define BOARD_CORECLK_FREQ  (BOARD_MCG_FREQ / BOARD_OUTDIV1)
+#define BOARD_BUS_FREQ      (BOARD_MCG_FREQ / BOARD_OUTDIV2)
+#define BOARD_FLEXBUS_FREQ  (BOARD_MCG_FREQ / BOARD_OUTDIV3)
+#define BOARD_FLASHCLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV4)
+
+/* LED definitions ******************************************************************/
+
+#define LED_STARTED       0
+#define LED_HEAPALLOCATE  1
+#define LED_IRQSENABLED   2
+#define LED_STACKCREATED  3
+#define LED_INIRQ         4
+#define LED_SIGNAL        5
+#define LED_ASSERTION     6
+#define LED_PANIC         7
+
+/* Button definitions ***************************************************************/
+
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+/************************************************************************************
+ * Name: kinetis_boardinitialize
+ *
+ * Description:
+ *   All STM32 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.
+ *
+ ************************************************************************************/
+
+EXTERN void kinetis_boardinitialize(void);
+
+/************************************************************************************
+ * Button support.
+ *
+ * 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.
+ *
+ *   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_*_BIT and JOYSTICK_*_BIT
+ *   definitions in board.h for the meaning of each bit.
+ *
+ *   up_irqbutton() may be called to register an interrupt handler that will
+ *   be called when a button is depressed or released.  The ID value is a
+ *   button enumeration value that uniquely identifies a button resource. See the
+ *   BUTTON_* and JOYSTICK_* definitions in board.h for the meaning of enumeration
+ *   value.  The previous interrupt handler address is returned (so that it may
+ *   restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_BUTTONS
+EXTERN void up_buttoninit(void);
+EXTERN uint8_t up_buttons(void);
+#ifdef CONFIG_ARCH_IRQBUTTONS
+EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
+#endif
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif  /* __ARCH_BOARD_BOARD_H */