diff options
-rw-r--r-- | nuttx/arch/arm/src/samd/Make.defs | 3 | ||||
-rw-r--r-- | nuttx/arch/arm/src/samd/chip/sam_gclk.h | 4 | ||||
-rw-r--r-- | nuttx/arch/arm/src/samd/chip/sam_nvmctrl.h | 165 | ||||
-rw-r--r-- | nuttx/arch/arm/src/samd/chip/sam_sysctrl.h | 2 | ||||
-rw-r--r-- | nuttx/arch/arm/src/samd/sam_clockconfig.c | 300 | ||||
-rw-r--r-- | nuttx/configs/samd20-xplained/include/board.h | 4 |
6 files changed, 475 insertions, 3 deletions
diff --git a/nuttx/arch/arm/src/samd/Make.defs b/nuttx/arch/arm/src/samd/Make.defs index acb5638fc..baac8f4a2 100644 --- a/nuttx/arch/arm/src/samd/Make.defs +++ b/nuttx/arch/arm/src/samd/Make.defs @@ -68,7 +68,8 @@ CMN_CSRCS += up_dumpnvic.c endif CHIP_ASRCS = -CHIP_CSRCS = sam_idle.c sam_irq.c sam_port.c sam_start.c sam_timerisr.c +CHIP_CSRCS = sam_clockconfig.c sam_idle.c sam_irq.c sam_port.c sam_start.c +CHIP_CSRCS += sam_timerisr.c ifeq ($(CONFIG_NUTTX_KERNEL),y) CHIP_CSRCS += sam_userspace.c diff --git a/nuttx/arch/arm/src/samd/chip/sam_gclk.h b/nuttx/arch/arm/src/samd/chip/sam_gclk.h index 075e00d05..ded483ca8 100644 --- a/nuttx/arch/arm/src/samd/chip/sam_gclk.h +++ b/nuttx/arch/arm/src/samd/chip/sam_gclk.h @@ -76,10 +76,10 @@ /* Generic clock control register */ #define GCLK_CLKCTRL_ID_SHIFT (0) /* Bits 0-5: Generic Clock Selection ID */ -#define GCLK_CLKCTRL_ID_SHIFT (0x3f << GCLK_CLKCTRL_ID_SHIFT) +#define GCLK_CLKCTRL_ID_MASK (0x3f << GCLK_CLKCTRL_ID_SHIFT) # define GCLK_CLKCTRL_ID(n) ((n) << GCLK_CLKCTRL_ID_SHIFT) #define GCLK_CLKCTRL_GEN_SHIFT (8) /* Bits 8-11: Generic Clock Generator */ -#define GCLK_CLKCTRL_GEN_SHIFT (15 << GCLK_CLKCTRL_GEN_SHIFT) +#define GCLK_CLKCTRL_GEN_MASK (15 << GCLK_CLKCTRL_GEN_SHIFT) # define GCLK_CLKCTRL_GEN(n) ((n) << GCLK_CLKCTRL_GEN_SHIFT) /* Generic clock generator n */ # define GCLK_CLKCTRL_GEN0 (0 << GCLK_CLKCTRL_GEN_SHIFT) /* Generic clock generator 0 */ # define GCLK_CLKCTRL_GEN1 (1 << GCLK_CLKCTRL_GEN_SHIFT) /* Generic clock generator 1 */ diff --git a/nuttx/arch/arm/src/samd/chip/sam_nvmctrl.h b/nuttx/arch/arm/src/samd/chip/sam_nvmctrl.h new file mode 100644 index 000000000..cc8f75a1b --- /dev/null +++ b/nuttx/arch/arm/src/samd/chip/sam_nvmctrl.h @@ -0,0 +1,165 @@ +/******************************************************************************************** + * arch/arm/src/samd/chip/sam_nvmctrl.h + * + * Copyright (C) 2014 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 __ARCH_ARM_SRC_SAMD_CHIP_SAM_NVMCTRL_H +#define __ARCH_ARM_SRC_SAMD_CHIP_SAM_NVMCTRL_H + +/******************************************************************************************** + * Included Files + ********************************************************************************************/ + +#include <nuttx/config.h> + +#include "chip.h" + +/******************************************************************************************** + * Pre-processor Definitions + ********************************************************************************************/ +/* NVMCTRL register offsets ********************************************************************/ + +#define SAM_NVMCTRL_CTRLA_OFFSET 0x0000 /* Control A register */ +#define SAM_NVMCTRL_CTRLB_OFFSET 0x0004 /* Control B register */ +#define SAM_NVMCTRL_PARAM_OFFSET 0x0008 /* NVM parameter register */ +#define SAM_NVMCTRL_INTENCLR_OFFSET 0x000c /* Interrupt clear register */ +#define SAM_NVMCTRL_INTENSET_OFFSET 0x0010 /* Interrupt set register */ +#define SAM_NVMCTRL_INTFLAG_OFFSET 0x0014 /* Interface flags status and clear register */ +#define SAM_NVMCTRL_STATUS_OFFSET 0x0018 /* Status register */ +#define SAM_NVMCTRL_ADDR_OFFSET 0x001c /* Address register */ +#define SAM_NVMCTRL_LOCK_OFFSET 0x0020 /* Lock section register */ + +/* NVMCTRL register addresses ******************************************************************/ + +#define SAM_NVMCTRL_CTRLA (SAM_NVMCTRL_BASE+SAM_NVMCTRL_CTRLA_OFFSET) +#define SAM_NVMCTRL_CTRLB (SAM_NVMCTRL_BASE+SAM_NVMCTRL_CTRLB_OFFSET) +#define SAM_NVMCTRL_PARAM (SAM_NVMCTRL_BASE+SAM_NVMCTRL_PARAM_OFFSET) +#define SAM_NVMCTRL_INTENCLR (SAM_NVMCTRL_BASE+SAM_NVMCTRL_INTENCLR_OFFSET) +#define SAM_NVMCTRL_INTENSET (SAM_NVMCTRL_BASE+SAM_NVMCTRL_INTENSET_OFFSET) +#define SAM_NVMCTRL_INTFLAG (SAM_NVMCTRL_BASE+SAM_NVMCTRL_INTFLAG_OFFSET) +#define SAM_NVMCTRL_STATUS (SAM_NVMCTRL_BASE+SAM_NVMCTRL_STATUS_OFFSET) +#define SAM_NVMCTRL_ADDR (SAM_NVMCTRL_BASE+SAM_NVMCTRL_ADDR_OFFSET) +#define SAM_NVMCTRL_LOCK (SAM_NVMCTRL_BASE+SAM_NVMCTRL_LOCK_OFFSET) + +/* NVMCTRL register bit definitions ************************************************************/ + +/* Control A register */ + +#define NVMCTRL_CTRLA_CMD_SHIFT (0) /* Bits 0-6: Command */ +#define NVMCTRL_CTRLA_CMD_MASK (0x7f << NVMCTRL_CTRLA_CMD_SHIFT) +# define NVMCTRL_CTRLA_CMD_ER (0x02 << NVMCTRL_CTRLA_CMD_SHIFT) /* Erase Row */ +# define NVMCTRL_CTRLA_CMD_WP (0x04 << NVMCTRL_CTRLA_CMD_SHIFT) /* Write Page */ +# define NVMCTRL_CTRLA_CMD_EAR (0x05 << NVMCTRL_CTRLA_CMD_SHIFT) /* Erase Auxiliary Row */ +# define NVMCTRL_CTRLA_CMD_WAP (0x06 << NVMCTRL_CTRLA_CMD_SHIFT) /* Write Auxiliary Page */ +# define NVMCTRL_CTRLA_CMD_LR (0x40 << NVMCTRL_CTRLA_CMD_SHIFT) /* Lock Region */ +# define NVMCTRL_CTRLA_CMD_UR (0x41 << NVMCTRL_CTRLA_CMD_SHIFT) /* Unlock Region */ +# define NVMCTRL_CTRLA_CMD_SPRM (0x42 << NVMCTRL_CTRLA_CMD_SHIFT) /* Set power reduction mode */ +# define NVMCTRL_CTRLA_CMD_CPRM (0x43 << NVMCTRL_CTRLA_CMD_SHIFT) /* Clear power reduction mode */ +# define NVMCTRL_CTRLA_CMD_PBC (0x44 << NVMCTRL_CTRLA_CMD_SHIFT) /* Page Buffer Clear */ +# define NVMCTRL_CTRLA_CMD_SSB (0x45 << NVMCTRL_CTRLA_CMD_SHIFT) /* Set Security Bit */ +# define NVMCTRL_CTRLA_CMD_INVALL (0x46 << NVMCTRL_CTRLA_CMD_SHIFT) /* Invalidate all cache lines */ +#define NVMCTRL_CTRLA_CMDEX_SHIFT (8) /* Bits 8-15: Command Execution */ +#define NVMCTRL_CTRLA_CMDEX_MASK (0xff << NVMCTRL_CTRLA_CMDEX_SHIFT) +# define NVMCTRL_CTRLA_CMDEX (0xa5 << NVMCTRL_CTRLA_CMDEX_SHIFT) + +/* Control B register */ + +#define NVMCTRL_CTRLB_RWS_SHIFT (1) /* Bits 1-4: NVM Read Wait States */ +#define NVMCTRL_CTRLB_RWS_MASK (15 << NVMCTRL_CTRLB_RWS_SHIFT) +# define NVMCTRL_CTRLB_RWS(n) ((n) << NVMCTRL_CTRLB_RWS_SHIFT) +#define NVMCTRL_CTRLB_MANW (1 << 7) /* Bit 7: Manual Write */ +#define NVMCTRL_CTRLB_SLEEPPRM_SHIFT (8) /* Bits 8-9: Power Reduction Mode during Sleep */ +#define NVMCTRL_CTRLB_SLEEPPRM_MASK (3 << NVMCTRL_CTRLB_SLEEPPRM_SHIFT) +# define NVMCTRL_CTRLB_SLEEPPRM_WAKEONACCESS (0 << NVMCTRL_CTRLB_SLEEPPRM_SHIFT) /* Exit low power on first access */ +# define NVMCTRL_CTRLB_SLEEPPRM_WAKEUPINSTANT (1 << NVMCTRL_CTRLB_SLEEPPRM_SHIFT) /* Exit low power when exit sleep */ +# define NVMCTRL_CTRLB_SLEEPPRM_DISABLED (3 << NVMCTRL_CTRLB_SLEEPPRM_SHIFT) /* Auto power reduction disabled */ +#define NVMCTRL_CTRLB_READMODE_SHIFT (16) /* Bits 16-17: NVMCTRL Read Mode */ +#define NVMCTRL_CTRLB_READMODE_MASK (3 << NVMCTRL_CTRLB_READMODE_SHIFT) +# define NVMCTRL_CTRLB_READMODE_NO_MISS_PENALTY (0 << NVMCTRL_CTRLB_READMODE_SHIFT) /* No extra wait states on miss */ +# define NVMCTRL_CTRLB_READMODE_LOW_POWER (1 << NVMCTRL_CTRLB_READMODE_SHIFT) /* Insert wait/reduce power */ +# define NVMCTRL_CTRLB_READMODE_DETERMINISTIC (2 << NVMCTRL_CTRLB_READMODE_SHIFT) /* Same wait on all access */ +#define NVMCTRL_CTRLB_CACHEDIS (1 << 18) /* Bit 18: Cache Disable */ + +/* NVM parameter register */ + +#define NVMCTRL_PARAM_NVMP_SHIFT (0) /* Bits 0-15: NVM Pages */ +#define NVMCTRL_PARAM_NVMP_MASK (0xffff << NVMCTRL_PARAM_NVMP_SHIFT) +# define NVMCTRL_PARAM_NVMP(n) ((n) << NVMCTRL_PARAM_NVMP_SHIFT) +#define NVMCTRL_PARAM_PSZ_SHIFT (16) /* Bits 16-18: Page Size */ +#define NVMCTRL_PARAM_PSZ_MASK (7 << NVMCTRL_PARAM_PSZ_SHIFT) +# define NVMCTRL_PARAM_PSZ_8B (0 << NVMCTRL_PARAM_PSZ_SHIFT) /* 8 bytes */ +# define NVMCTRL_PARAM_PSZ_16B (1 << NVMCTRL_PARAM_PSZ_SHIFT) /* 16 bytes */ +# define NVMCTRL_PARAM_PSZ_32B (2 << NVMCTRL_PARAM_PSZ_SHIFT) /* 32 bytes */ +# define NVMCTRL_PARAM_PSZ_64B (3 << NVMCTRL_PARAM_PSZ_SHIFT) /* 64 bytes */ +# define NVMCTRL_PARAM_PSZ_128B (4 << NVMCTRL_PARAM_PSZ_SHIFT) /* 128 bytes */ +# define NVMCTRL_PARAM_PSZ_256B (5 << NVMCTRL_PARAM_PSZ_SHIFT) /* 256 bytes */ +# define NVMCTRL_PARAM_PSZ_512B (6 << NVMCTRL_PARAM_PSZ_SHIFT) /* 512 bytes */ +# define NVMCTRL_PARAM_PSZ_1KB (7 << NVMCTRL_PARAM_PSZ_SHIFT) /* 1024 bytes */ + +/* Interrupt clear register */ +/* Interrupt set register */ +/* Interface flags status and clear register */ + +#define NVMCTRL_INT_READY (1 << 0) /* Bit 0: NVM Ready Interrupt */ +#define NVMCTRL_INT_ERROR (1 << 1) /* Bit 1: Error Interrupt */ + +/* Status register */ + +#define NVMCTRL_STATUS_PRM (1 << 0) /* Bit 0: Power Reduction Mode */ +#define NVMCTRL_STATUS_LOAD (1 << 1) /* Bit 1: NVM Page Buffer Active Loading */ +#define NVMCTRL_STATUS_PROGE (1 << 2) /* Bit 2: Programming Error Status */ +#define NVMCTRL_STATUS_LOCKE (1 << 3) /* Bit 3: Lock Error Status */ +#define NVMCTRL_STATUS_NVME (1 << 4) /* Bit 4: NVM Error */ +#define NVMCTRL_STATUS_SB (1 << 8) /* Bit 8: Security Bit Status */ + +/* Address register */ + +#define NVMCTRL_ADDR_MASK (0x003fffff) /* Bits 0-21: NVM Address */ + +/* Lock section register */ + +#define NVMCTRL_LOCK_REGION(n) (1 << (n)) /* Region n is locked */ + +/******************************************************************************************** + * Public Types + ********************************************************************************************/ + +/******************************************************************************************** + * Public Data + ********************************************************************************************/ + +/******************************************************************************************** + * Public Functions + ********************************************************************************************/ + +#endif /* __ARCH_ARM_SRC_SAMD_CHIP_SAM_NVMCTRL_H */ diff --git a/nuttx/arch/arm/src/samd/chip/sam_sysctrl.h b/nuttx/arch/arm/src/samd/chip/sam_sysctrl.h index ee6c32e99..41c36059e 100644 --- a/nuttx/arch/arm/src/samd/chip/sam_sysctrl.h +++ b/nuttx/arch/arm/src/samd/chip/sam_sysctrl.h @@ -102,6 +102,8 @@ #define SYSCTRL_INT_BOD33DET (1 << 10) /* Bit 10: BOD33 detection interrupt */ #define SYSCTRL_INT_B33SRDY (1 << 11) /* Bit 11: BOD33 synchronization ready interrupt */ +#define SYSCTRL_INT_ALL (0x00000fff) + /* External multi-purpose crystal oscillator control register */ #define SYSCTRL_XOSC_ENABLE (1 << 1) /* Bit 1: Oscillator enable */ diff --git a/nuttx/arch/arm/src/samd/sam_clockconfig.c b/nuttx/arch/arm/src/samd/sam_clockconfig.c new file mode 100644 index 000000000..165c44097 --- /dev/null +++ b/nuttx/arch/arm/src/samd/sam_clockconfig.c @@ -0,0 +1,300 @@ +/**************************************************************************** + * arch/arm/src/samd/sam_clockconfig.c + * + * Copyright (C) 2014 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <assert.h> + +#include "up_arch.h" + +#include "chip/sam_pm.h" +#include "chip/sam_sysctrl.h" +#include "chip/sam_gclk.h" +#include "chip/sam_nvmctrl.h" + +#include <arch/board/board.h> + +#include "sam_clockconfig.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: sam_flash_waitstates + * + * Description: + * Set the FLASH wait states based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +static inline void sam_flash_waitstates(void) +{ + uint32_t regval; + + regval = getreg32(SAM_NVMCTRL_CTRLB); + regval &= ~NVMCTRL_CTRLB_RWS_MASK; + regval |= NVMCTRL_CTRLB_RWS(BOARD_FLASH_WAITSTATES); + putreg32(regval, SAM_NVMCTRL_CTRLB); +} + +/**************************************************************************** + * Name: sam_xosc_config + * + * Description: + * Configure XOSC based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#if defined(CONFIG_SAMD_XOSC) || defined(BOARD_XOSC_ENABLE) +static inline void sam_xosc_config(void) +{ +#warning Missing logic +} +#else +# define sam_xosc_config() +#endif + +/**************************************************************************** + * Name: sam_xosc32k_config + * + * Description: + * Configure XOSC32K based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#if defined(CONFIG_SAMD_XOSC32K) || defined(BOARD_XOSC32_ENABLE) +static inline void sam_xosc32k_config(void) +{ +#warning Missing logic +} +#else +# define sam_xosc32k_config() +#endif + +/**************************************************************************** + * Name: sam_osc32k_config + * + * Description: + * Configure OSC32K based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#if defined(CONFIG_SAMD_OSC32K) || defined(BOARD_OSC32_ENABLE) +static inline void sam_osc32k_config(void) +{ +#warning Missing logic +} +#else +# define sam_osc32k_config() +#endif + +/**************************************************************************** + * Name: sam_dfll_config + * + * Description: + * Configure the DFLL based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#if defined(CONFIG_SAMD_DFLL) || defined(BOARD_DFLL_ENABLE) +static inline void sam_dfll_config(void) +{ +#warning Missing logic +} +#else +# define sam_dfll_config() +#endif + +/**************************************************************************** + * Name: sam_osc8m_config + * + * Description: + * Configure OSC8M based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +static inline void sam_osc8m_config(void) +{ +#warning Missing logic +} + +/**************************************************************************** + * Name: sam_gclk_config + * + * Description: + * Configure GCLK(s) based on settings in the board.h header file + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#if defined(CONFIG_SAMD_GCLK) || defined(BOARD_GCLK_ENABLE) +static inline void sam_gclk_config(void) +{ +#warning Missing logic +} +#else +# define sam_gclk_config() +#endif + +/**************************************************************************** + * Name: sam_dividers + * + * Description: + * Setup PM main clock dividers to generate CPU, AHB, and APB clocks. + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +static inline void sam_dividers(void) +{ +#warning Missing logic +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: sam_clockconfig + * + * Description: + * Called to establish the clock settings based on the values in board.h. + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +void sam_clockconfig(void) +{ + /* Clear pending interrupt status. */ + + putreg32(SYSCTRL_INT_ALL, SAM_SYSCTRL_INTFLAG); + + /* Set FLASH wait states */ + + sam_flash_waitstates(); + + /* Configure XOSC */ + + sam_xosc_config(); + + /* Configure XOSC32K */ + + sam_xosc32k_config(); + + /* Configure OSCK32K */ + + sam_osc32k_config(); + + /* Configure DFLL */ + + sam_dfll_config(); + + /* Configure OSC8M */ + + sam_osc8m_config(); + + /* Configure GCLK(s) */ + + sam_gclk_config(); + + /* Set CPU and BUS clock dividers */ + + sam_dividers(); +} diff --git a/nuttx/configs/samd20-xplained/include/board.h b/nuttx/configs/samd20-xplained/include/board.h index 6bd10f224..6a57e7084 100644 --- a/nuttx/configs/samd20-xplained/include/board.h +++ b/nuttx/configs/samd20-xplained/include/board.h @@ -136,6 +136,10 @@ #define BOARD_PBC_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_PBC_SHIFT) #define BOARD_PBD_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_PBD_SHIFT) +/* FLASH wait states */ + +#define BOARD_FLASH_WAITSTATES 0 + /* LED definitions ******************************************************************/ /* There are three LEDs on board the SAMD20 Xplained Pro board: The EDBG * controls two of the LEDs, a power LED and a status LED. There is only |