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nuttx/configs/xmc4500-relax/include/board.h
David Alessio 6ae6ecc958 Merged in david_alessio/nuttx/refactor-pll-setup (pull request #581) 
Refactor pll setup

* fix typo in #def

* refactor PLL setup code...

* refactored PLL/CLK config, easier, checks for correctness

* call go_os_start if STACK_COLORIZED

* smarter config of EXTCLK output freq

* cosmetic

Approved-by: Gregory Nutt <gnutt@nuttx.org>
2018-01-22 13:20:35 +00:00

364 lines
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/************************************************************************************
* configs/xmc4500-relax/include/board.h
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 __CONFIG_XMC4500_RELAX_INCLUDE_BOARD_H
#define __CONFIG_XMC4500_RELAX_INCLUDE_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
#endif
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* The maximum frequency for the XMC4500 is 120MHz. */
#undef BOARD_FCPU_144MHZ
#define BOARD_FCPU_120MHZ 1
/* Watchdog clock source selection */
#define WDT_CLKSRC_FOFI 0 /* fOFI clock */
#define WDT_CLKSRC_FSTDY 1 /* fSTDY clock */
#define WDT_CLKSRC_FPLL 2 /* fPLL clock */
/* External Clock source selection */
#define EXT_CLKSRC_FSYS 0 /* fSYS clock */
#define EXT_CLKSRC_FUSB 2 /* fUSB clock divided by ECKDIV */
#define EXT_CLKSRC_FPLL 3 /* fPLL clock divided by ECKDIV */
/* Factory Calibration */
#undef BOARD_FOFI_CALIBRATION /* Enable factory calibration */
/* On-board crystals
*
* NOTE: Only the XMC4500 Relax Kit-V1 provides the 32.768KHz RTC crystal. It
* is not available on XMC4500 Relax Lite Kit-V1.
*/
#define BOARD_XTAL_FREQUENCY 12000000 /* 12MHz XTAL */
#undef BOARD_RTC_XTAL_FRQUENCY /* 32.768KHz RTC XTAL not available on the Relax Lite */
/*
* TODO: enable the RTC osc, use RTC for time/date
*/
/* Select the external crystal as the PLL clock source */
# define BOARD_PLL_CLOCKSRC_XTAL 1 /* PLL Clock source == extnernal crystal */
# undef BOARD_PLL_CLOCKSRC_OFI /* PLL Clock source != internal fast oscillator */
/* PLL Configuration:
*
* fXTAL = 12Mhz
* 260 MHz <= fVCO <= 520 MHz
*
* fVCO = fXTAL * ndiv / pdiv
* fPLL = fVCO / k2div
* fSYS = fPLL / sysdiv
* fETH = fSYS / 2 (fixed div by 2)
* fCCU = fSYS / ccudiv (div by 1 or 2)
* fCPU = fSYS / cpudiv (div by 1 or 2)
* fPERIPH = fCPU / pbdiv (div by 1 or 2)
*/
# define BOARD_ENABLE_PLL 1 /* enable the PLL */
# define CPU_FREQ 120 /* MHz */
/* TODO: Automate PLL calculations */
#if CPU_FREQ == 120
/*
* 120 MHz
*
* fVCO = 12MHz * 40 / 2 = 480MHz
* fPLL = 480MHz / 2 = 240MHz
* fSYS = fPLL / 2 = 120MHz
* fCCU = fSYS / 2 = 60MHz
* fCPU = fSYS / 1 = 120MHz
* fPB = fCPU / 2 = 60MHz
* fETH = fSYS / 2 = 60MHz
*/
# define BOARD_PLL_NDIV 40
# define BOARD_PLL_PDIV 1
# define BOARD_PLL_K2DIV 4
# define BOARD_PLL_SYSDIV 1
# define BOARD_PLL_CPUDIV 1
# define BOARD_PLL_PBDIV 2
# define BOARD_PLL_CCUDIV 2
# define BOARD_PLL_EBUDIV 4
#elif CPU_FREQ == 144
/*
* 144 MHz
*
* fVCO = 12MHz * 36 / 1 = 432MHz
* fPLL = 432MHz / 3 = 144MHz
* fSYS = fPLL / 1 = 144MHz
* fCCU = fSYS / 2 = 72MHz
* fCPU = fSYS / 1 = 144MHz
* fPB = fCPU / 2 = 72MHz
* fETH = fSYS / 2 = 72MHz
*/
# define BOARD_PLL_NDIV 36
# define BOARD_PLL_PDIV 1
# define BOARD_PLL_K2DIV 3
# define BOARD_PLL_SYSDIV 1
# define BOARD_PLL_CPUDIV 1
# define BOARD_PLL_PBDIV 2
# define BOARD_PLL_CCUDIV 2
# define BOARD_PLL_EBUDIV 2
#else
# error "Illegal or Unsupported CPU Frequency"
#endif
# define BOARD_CCUDIV_ENABLE (BOARD_PLL_CCUDIV - 1)
# define BOARD_CPUDIV_ENABLE (BOARD_PLL_CPUDIV - 1)
# define BOARD_VCO_FREQUENCY (BOARD_XTAL_FREQUENCY * BOARD_PLL_NDIV / BOARD_PLL_PDIV)
# define BOARD_PLL_FREQUENCY (BOARD_VCO_FREQUENCY / BOARD_PLL_K2DIV)
# define BOARD_SYS_FREQUENCY (BOARD_PLL_FREQUENCY / BOARD_PLL_SYSDIV)
# define BOARD_CCU_FREQUENCY (BOARD_SYS_FREQUENCY / BOARD_PLL_CCUDIV)
# define BOARD_CPU_FREQUENCY (BOARD_SYS_FREQUENCY / BOARD_PLL_CPUDIV)
# define BOARD_PERIPH_FREQUENCY (BOARD_CPU_FREQUENCY / BOARD_PLL_PBDIV)
# define BOARD_ETH_FREQUENCY (BOARD_SYS_FREQUENCY / 2)
# define BOARD_WDT_SOURCE WDT_CLKSRC_FOFI
# define BOARD_WDTDIV 1
# define BOARD_WDT_FREQUENCY 24000000
# define BOARD_EXT_SOURCE EXT_CLKSRC_FPLL
# define BOARD_PLL_ECKDIV 480 /* [1,512] */
# define kHz_1 1000
# define MHz_1 (kHz_1 * kHz_1)
# define MHz_50 ( 50 * MHz_1)
# define MHz_260 (260 * MHz_1)
# define MHz_520 (520 * MHz_1)
/* range check VCO frequency */
# if (BOARD_VCO_FREQUENCY < MHz_260)
# error "VCO freq must be >= 260 MHz"
# endif
# if (BOARD_VCO_FREQUENCY > MHz_520)
# error "VCO freq must be <= 520 MHz"
# endif
/* range check Ethernet MAC frequency */
# if (BOARD_ETH_FREQUENCY <= MHz_50)
# error "ETH freq must be > 50 MHz"
# endif
/* check ccudiv cpudiv pbdiv against Table 11-5
* of XMC4500 User Manual
*/
#define CLKDIV_INDEX (4 * (BOARD_PLL_CCUDIV-1) + \
2 * (BOARD_PLL_CPUDIV-1) + \
(BOARD_PLL_PBDIV-1) )
#if (CLKDIV_INDEX == 3) || (CLKDIV_INDEX == 4) || (CLKDIV_INDEX > 6)
# error "Illegal combination of dividers! Ref: Table 11-5 of UM"
#endif
/* EXT clock settings */
#define BOARD_EXTCKL_ENABLE 1 /* 0 disables output */
#if BOARD_EXTCKL_ENABLE
# define EXTCLK_PIN_P0_8 8
# define EXTCLK_PIN_P1_15 15
# define BOARD_EXTCLK_PIN EXTCLK_PIN_P0_8
# define BOARD_EXT_SOURCE EXT_CLKSRC_FPLL
# define BOARD_EXT_FREQUENCY (250 * kHz_1) /* Desired output freq */
# define BOARD_EXTDIV (BOARD_PLL_FREQUENCY / BOARD_EXT_FREQUENCY)
/* range check EXTDIV */
# if BOARD_EXTDIV > 512
# error "EXTCLK Divisor out of range!"
# endif
#endif
/* Standby clock source selection
*
* BOARD_STDBY_CLOCKSRC_OSI - Internal 32.768KHz slow oscillator
* BOARD_STDBY_CLOCKSRC_OSCULP - External 32.768KHz crystal
*/
#define BOARD_STDBY_CLOCKSRC_OSI 1
#undef BOARD_STDBY_CLOCKSRC_OSCULP
#define BOARD_STDBY_FREQUENCY 32768
/* USB PLL settings.
*
* fUSBPLL = 48MHz and fUSBPLLVCO = 384 MHz
*
* Note: Implicit divider of 2 and fUSBPLLVCO >= 260 MHz and
* fUSBPLLVCO <= 520 MHz
*/
#undef BOARD_ENABLE_USBPLL
#define BOARD_USB_PDIV 2
#define BOARD_USB_NDIV 64
/* FLASH wait states */
#define BOARD_FLASH_WS 5
/* LED definitions ******************************************************************/
/* The XMC4500 Relax Lite v1 board has two LEDs:
*
* LED1 P1.1 High output illuminates
* LED2 P1.0 High output illuminates
*
* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in any
* way. The following definitions are used to access individual LEDs.
*/
/* LED index values for use with board_userled() */
#define BOARD_LED0 0
#define BOARD_LED1 1
#define BOARD_NLEDS 2
/* LED bits for use with board_userled_all() */
#define BOARD_LED0_BIT (1 << BOARD_LED0)
#define BOARD_LED1_BIT (1 << BOARD_LED1)
/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/sam_autoleds.c. The LEDs are used to encode
* OS-related events as follows:
*
* SYMBOL Meaning LED state
* LED2 LED1
* --------------------- -------------------------- ------ ------ */
#define LED_STARTED 0 /* NuttX has been started OFF OFF */
#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON OFF */
#define LED_INIRQ 2 /* In an interrupt No change */
#define LED_SIGNAL 2 /* In a signal handler No change */
#define LED_ASSERTION 2 /* An assertion failed No change */
#define LED_PANIC 3 /* The system has crashed N/C Blinking */
#undef LED_IDLE /* MCU is is sleep mode Not used */
/* Thus if LED1 is statically on, NuttX has successfully booted and is,
* apparently, running normally. If LED2 is flashing at approximately
* 2Hz, then a fatal error has been detected and the system has halted.
*/
/* Button definitions ***************************************************************/
/* The XMC4500 Relax Lite v1 board has two buttons:
*
* BUTTON1 P1.14 Low input sensed when button pressed
* BUTTON2 P1.15 Low input sensed when button pressed
*/
#define BUTTON_0 0
#define BUTTON_1 1
#define NUM_BUTTONS 2
#define BUTTON_0_BIT (1 << BUTTON_0)
#define BUTTON_1_BIT (1 << BUTTON_1)
/* USIC0 ****************************************************************************/
/* USIC0 CH0 is used as UART0
*
* RX - P1.4
* TX - P1.5
*/
#define BOARD_UART0_DX USIC_DXB
#define GPIO_UART0_RXD GPIO_U0C0_DX0B
#define GPIO_UART0_TXD (GPIO_U0C0_DOUT0_3 | GPIO_PADA1P_STRONGSOFT | GPIO_OUTPUT_SET)
/* USIC1 CH1 is used as UART3
*
* RX - P0.0
* TX - P0.1
*/
#define BOARD_UART3_DX USIC_DXD
#define GPIO_UART3_RXD (GPIO_U1C1_DX0D | GPIO_INPUT_PULLUP)
#define GPIO_UART3_TXD (GPIO_U1C1_DOUT0_2 | GPIO_PADA1P_STRONGSOFT | GPIO_OUTPUT_SET)
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIG_XMC4500_RELAX_INCLUDE_BOARD_H */
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