/* * Copyright (c) 2016, Freescale Semiconductor, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * o Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * * o 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. * * o Neither the name of Freescale Semiconductor, Inc. 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 HOLDER 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. */ #include "fsl_eeprom.h" /******************************************************************************* * Definitions ******************************************************************************/ /******************************************************************************* * Prototypes ******************************************************************************/ /*! * @brief Get the EEPROM instance from peripheral base address. * * @param base EEPROM peripheral base address. * @return EEPROM instance. */ static uint32_t EEPROM_GetInstance(EEPROM_Type *base); /******************************************************************************* * Variables ******************************************************************************/ /* Array of EEPROM peripheral base address. */ static EEPROM_Type *const s_eepromBases[] = EEPROM_BASE_PTRS; #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) /* Array of EEPROM clock name. */ static const clock_ip_name_t s_eepromClock[] = EEPROM_CLOCKS; #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ /******************************************************************************* * Code ******************************************************************************/ static uint32_t EEPROM_GetInstance(EEPROM_Type *base) { uint32_t instance; /* Find the instance index from base address mappings. */ for (instance = 0; instance < FSL_FEATURE_SOC_EEPROM_COUNT; instance++) { if (s_eepromBases[instance] == base) { break; } } assert(instance < FSL_FEATURE_SOC_EEPROM_COUNT); return instance; } void EEPROM_GetDefaultConfig(eeprom_config_t *config) { config->autoProgram = kEEPROM_AutoProgramWriteWord; config->writeWaitPhase1 = 0x5U; config->writeWaitPhase2 = 0x9U; config->writeWaitPhase3 = 0x3U; config->readWaitPhase1 = 0xFU; config->readWaitPhase2 = 0x8U; config->lockTimingParam = false; } void EEPROM_Init(EEPROM_Type *base, const eeprom_config_t *config, uint32_t sourceClock_Hz) { assert(config); uint32_t clockDiv = 0; #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) /* Enable the SAI clock */ CLOCK_EnableClock(s_eepromClock[EEPROM_GetInstance(base)]); #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ /* Set the clock divider */ clockDiv = sourceClock_Hz / FSL_FEATURE_EEPROM_INTERNAL_FREQ; if ((sourceClock_Hz % FSL_FEATURE_EEPROM_INTERNAL_FREQ) > (FSL_FEATURE_EEPROM_INTERNAL_FREQ / 2U)) { clockDiv += 1U; } base->CLKDIV = clockDiv - 1U; /* Set the auto program feature */ EEPROM_SetAutoProgram(base, config->autoProgram); /* Set time delay parameter */ base->RWSTATE = EEPROM_RWSTATE_RPHASE1(config->readWaitPhase1 - 1U) | EEPROM_RWSTATE_RPHASE2(config->readWaitPhase2 - 1U); base->WSTATE = EEPROM_WSTATE_PHASE1(config->writeWaitPhase1 - 1U) | EEPROM_WSTATE_PHASE2(config->writeWaitPhase2 - 1U) | EEPROM_WSTATE_PHASE3(config->writeWaitPhase3 - 1U); base->WSTATE |= EEPROM_WSTATE_LCK_PARWEP(config->lockTimingParam); /* Clear the remaining write operation */ base->CMD = FSL_FEATURE_EEPROM_PROGRAM_CMD; while ((EEPROM_GetInterruptStatus(base) & kEEPROM_ProgramFinishInterruptEnable) == 0U) {} } void EEPROM_Deinit(EEPROM_Type *base) { #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) /* Enable the SAI clock */ CLOCK_DisableClock(s_eepromClock[EEPROM_GetInstance(base)]); #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ } status_t EEPROM_WriteWord(EEPROM_Type *base, uint32_t offset, uint32_t data) { uint32_t *addr = 0; if ((offset % 4U) || (offset > FSL_FEATURE_EEPROM_SIZE)) { return kStatus_InvalidArgument; } /* Set auto program settings */ if (base->AUTOPROG != kEEPROM_AutoProgramDisable) { EEPROM_SetAutoProgram(base, kEEPROM_AutoProgramWriteWord); } EEPROM_ClearInterruptFlag(base, kEEPROM_ProgramFinishInterruptEnable); /* Compute the page */ addr = (uint32_t *)(FSL_FEATURE_EEPROM_BASE_ADDRESS + offset); *addr = data; /* Check if need to do program erase manually */ if (base->AUTOPROG != kEEPROM_AutoProgramWriteWord) { base->CMD = FSL_FEATURE_EEPROM_PROGRAM_CMD; } /* Waiting for operation finished */ while ((EEPROM_GetInterruptStatus(base) & kEEPROM_ProgramFinishInterruptEnable) == 0U) {} return kStatus_Success; } status_t EEPROM_WritePage(EEPROM_Type *base, uint32_t pageNum, uint32_t *data) { uint32_t i = 0; uint32_t *addr = NULL; if ((pageNum > FSL_FEATURE_EEPROM_PAGE_COUNT) || (!data)) { return kStatus_InvalidArgument; } /* Set auto program settings */ if (base->AUTOPROG != kEEPROM_AutoProgramDisable) { EEPROM_SetAutoProgram(base, kEEPROM_AutoProgramLastWord); } EEPROM_ClearInterruptFlag(base, kEEPROM_ProgramFinishInterruptEnable); addr = (uint32_t *)(FSL_FEATURE_EEPROM_BASE_ADDRESS + pageNum * (FSL_FEATURE_EEPROM_SIZE/FSL_FEATURE_EEPROM_PAGE_COUNT)); for (i = 0; i < (FSL_FEATURE_EEPROM_SIZE/FSL_FEATURE_EEPROM_PAGE_COUNT) / 4U; i++) { addr[i] = data[i]; } if (base->AUTOPROG == kEEPROM_AutoProgramDisable) { base->CMD = FSL_FEATURE_EEPROM_PROGRAM_CMD; } /* Waiting for operation finished */ while ((EEPROM_GetInterruptStatus(base) & kEEPROM_ProgramFinishInterruptEnable) == 0U) {} return kStatus_Success; }