496 lines
17 KiB
C
496 lines
17 KiB
C
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//*****************************************************************************
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//
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//! @file am_devices_mb85rc256v.c
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//!
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//! @brief Fujitsu 256K I2C FRAM driver.
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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// Copyright (c) 2020, Ambiq Micro
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// All rights reserved.
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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 are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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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 the
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// documentation and/or other materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// Third party software included in this distribution is subject to the
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// additional license terms as defined in the /docs/licenses directory.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN 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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// This is part of revision 2.4.2 of the AmbiqSuite Development Package.
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//
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//*****************************************************************************
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#include "am_mcu_apollo.h"
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#include "am_devices_mb85rc256v.h"
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#include "am_bsp.h"
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//*****************************************************************************
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//
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// Global variables.
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//
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//*****************************************************************************
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typedef struct
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{
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uint32_t ui32Module;
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void *pIomHandle;
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bool bOccupied;
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} am_devices_iom_mb85rc256v_t;
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am_devices_iom_mb85rc256v_t gAmMb85rc256v[AM_DEVICES_MB85RC256V_MAX_DEVICE_NUM];
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am_hal_iom_config_t g_sIomMb85rc256vCfg =
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{
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.eInterfaceMode = AM_HAL_IOM_I2C_MODE,
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.ui32ClockFreq = AM_HAL_IOM_1MHZ,
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.eSpiMode = AM_HAL_IOM_SPI_MODE_0,
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.ui32NBTxnBufLength = 0,
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.pNBTxnBuf = NULL,
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};
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//*****************************************************************************
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//
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// Generic Command Write function.
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//
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//*****************************************************************************
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static uint32_t
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am_device_command_write(void *pHandle, uint8_t ui8DevAddr, uint32_t ui32InstrLen,
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uint32_t ui32Instr, bool bCont,
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uint32_t *pData, uint32_t ui32NumBytes)
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{
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am_hal_iom_transfer_t Transaction;
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//
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// Create the transaction.
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//
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Transaction.ui32InstrLen = ui32InstrLen;
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Transaction.ui32Instr = ui32Instr;
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Transaction.eDirection = AM_HAL_IOM_TX;
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Transaction.ui32NumBytes = ui32NumBytes;
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Transaction.pui32TxBuffer = pData;
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Transaction.uPeerInfo.ui32I2CDevAddr = ui8DevAddr;
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Transaction.bContinue = bCont;
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Transaction.ui8RepeatCount = 0;
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Transaction.ui32PauseCondition = 0;
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Transaction.ui32StatusSetClr = 0;
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//
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// Execute the transction over IOM.
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//
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if (am_hal_iom_blocking_transfer(pHandle, &Transaction))
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
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}
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//*****************************************************************************
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//
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// Generic Command Read function.
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//
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//*****************************************************************************
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static uint32_t
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am_device_command_read(void *pHandle, uint8_t ui8DevAddr, uint32_t ui32InstrLen, uint32_t ui32Instr,
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bool bCont, uint32_t *pData, uint32_t ui32NumBytes)
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{
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am_hal_iom_transfer_t Transaction;
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//
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// Create the transaction.
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//
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Transaction.ui32InstrLen = ui32InstrLen;
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Transaction.ui32Instr = ui32Instr;
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Transaction.eDirection = AM_HAL_IOM_RX;
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Transaction.ui32NumBytes = ui32NumBytes;
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Transaction.pui32RxBuffer = pData;
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Transaction.uPeerInfo.ui32I2CDevAddr = ui8DevAddr;
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Transaction.bContinue = bCont;
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Transaction.ui8RepeatCount = 0;
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Transaction.ui32PauseCondition = 0;
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Transaction.ui32StatusSetClr = 0;
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//
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// Execute the transction over IOM.
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//
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if (am_hal_iom_blocking_transfer(pHandle, &Transaction))
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
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}
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//*****************************************************************************
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//
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//! @brief Initialize the mb85rc256v driver.
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//!
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//! @param psIOMSettings - IOM device structure describing the target spiflash.
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//! @param pDMACtrlBuffer - DMA Transfer Control Buffer.
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//!
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//! This function should be called before any other am_devices_mb85rc256v
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//! functions. It is used to set tell the other functions how to communicate
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//! with the external spiflash hardware.
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//!
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//! @return Status.
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//
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//*****************************************************************************
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uint32_t
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am_devices_mb85rc256v_init(uint32_t ui32Module, am_devices_mb85rc256v_config_t *pDevConfig, void **ppHandle, void **ppIomHandle)
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{
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void *pIomHandle;
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am_hal_iom_config_t stIOMMB85RC256VSettings;
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uint32_t ui32Index = 0;
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// Allocate a vacant device handle
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for ( ui32Index = 0; ui32Index < AM_DEVICES_MB85RC256V_MAX_DEVICE_NUM; ui32Index++ )
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{
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if ( gAmMb85rc256v[ui32Index].bOccupied == false )
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{
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break;
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}
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}
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if ( ui32Index == AM_DEVICES_MB85RC256V_MAX_DEVICE_NUM )
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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if ( (ui32Module > AM_REG_IOM_NUM_MODULES) || (pDevConfig == NULL) )
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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//
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// Enable fault detection.
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//
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#if defined (AM_PART_APOLLO3) || defined (AM_PART_APOLLO3P)
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#if AM_APOLLO3_MCUCTRL
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am_hal_mcuctrl_control(AM_HAL_MCUCTRL_CONTROL_FAULT_CAPTURE_ENABLE, 0);
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#else // AM_APOLLO3_MCUCTRL
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am_hal_mcuctrl_fault_capture_enable();
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#endif // AM_APOLLO3_MCUCTRL
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#endif
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stIOMMB85RC256VSettings = g_sIomMb85rc256vCfg;
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stIOMMB85RC256VSettings.ui32NBTxnBufLength = pDevConfig->ui32NBTxnBufLength;
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stIOMMB85RC256VSettings.pNBTxnBuf = pDevConfig->pNBTxnBuf;
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stIOMMB85RC256VSettings.ui32ClockFreq = pDevConfig->ui32ClockFreq;
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//
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// Initialize the IOM instance.
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// Enable power to the IOM instance.
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// Configure the IOM for Serial operation during initialization.
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// Enable the IOM.
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//
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if (am_hal_iom_initialize(ui32Module, &pIomHandle) ||
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am_hal_iom_power_ctrl(pIomHandle, AM_HAL_SYSCTRL_WAKE, false) ||
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am_hal_iom_configure(pIomHandle, &stIOMMB85RC256VSettings) ||
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am_hal_iom_enable(pIomHandle))
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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else
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{
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//
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// Configure the IOM pins.
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//
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am_bsp_iom_pins_enable(ui32Module, AM_HAL_IOM_I2C_MODE);
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gAmMb85rc256v[ui32Index].bOccupied = true;
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gAmMb85rc256v[ui32Index].ui32Module = ui32Module;
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*ppIomHandle = gAmMb85rc256v[ui32Index].pIomHandle = pIomHandle;
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*ppHandle = (void *)&gAmMb85rc256v[ui32Index];
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//
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// Return the status.
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//
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return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
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}
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}
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//*****************************************************************************
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//
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//! @brief De-Initialize the mb85rc256v driver.
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//!
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//! @param ui32Module - IOM Module#
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//!
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//! This function reverses the initialization
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//!
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//! @return Status.
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//
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//*****************************************************************************
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uint32_t
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am_devices_mb85rc256v_term(void *pHandle)
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{
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am_devices_iom_mb85rc256v_t *pIom = (am_devices_iom_mb85rc256v_t *)pHandle;
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if ( pIom->ui32Module > AM_REG_IOM_NUM_MODULES )
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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//
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// Disable the IOM.
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//
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am_hal_iom_disable(pIom->pIomHandle);
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//
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// Disable power to and uninitialize the IOM instance.
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//
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am_hal_iom_power_ctrl(pIom->pIomHandle, AM_HAL_SYSCTRL_DEEPSLEEP, false);
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am_hal_iom_uninitialize(pIom->pIomHandle);
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// Free this device handle
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pIom->bOccupied = false;
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//
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// Return the status.
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//
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return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
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}
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//*****************************************************************************
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//
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//! @brief Reads the ID of the external flash and returns the value.
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//!
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//! @param pDeviceID - Pointer to the return buffer for the Device ID.
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//!
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//! This function reads the device ID register of the external flash, and returns
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//! the result as an 32-bit unsigned integer value.
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//!
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//! @return 32-bit status
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//
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//*****************************************************************************
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uint32_t
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am_devices_mb85rc256v_read_id(void *pHandle, uint32_t *pDeviceID)
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{
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am_devices_iom_mb85rc256v_t *pIom = (am_devices_iom_mb85rc256v_t *)pHandle;
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//
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// Send the command sequence to read the Device ID.
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//
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if (am_device_command_read(pIom->pIomHandle, AM_DEVICES_MB85RC256V_RSVD_SLAVE_ID, 1,
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(AM_DEVICES_MB85RC256V_SLAVE_ID << 1),
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false, pDeviceID, 3))
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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//
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// Return the status.
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//
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return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
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}
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//*****************************************************************************
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//
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//! @brief Programs the given range of flash addresses.
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//!
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//! @param ui32DeviceNumber - Device number of the external flash
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//! @param pui8TxBuffer - Buffer to write the external flash data from
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//! @param ui32WriteAddress - Address to write to in the external flash
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//! @param ui32NumBytes - Number of bytes to write to the external flash
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//!
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//! This function uses the data in the provided pui8TxBuffer and copies it to
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//! the external flash at the address given by ui32WriteAddress. It will copy
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//! exactly ui32NumBytes of data from the original pui8TxBuffer pointer. The
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//! user is responsible for ensuring that they do not overflow the target flash
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//! memory or underflow the pui8TxBuffer array
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//
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//! @return 32-bit status
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//
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//*****************************************************************************
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uint32_t
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am_devices_mb85rc256v_blocking_write(void *pHandle, uint8_t *pui8TxBuffer,
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uint32_t ui32WriteAddress,
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uint32_t ui32NumBytes)
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{
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am_devices_iom_mb85rc256v_t *pIom = (am_devices_iom_mb85rc256v_t *)pHandle;
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//
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// Write the data to the device.
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//
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if (am_device_command_write(pIom->pIomHandle, AM_DEVICES_MB85RC256V_SLAVE_ID, 2,
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(ui32WriteAddress & 0x0000FFFF),
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false, (uint32_t *)pui8TxBuffer, ui32NumBytes))
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{
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return AM_DEVICES_MB85RC256V_STATUS_ERROR;
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}
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//
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// Return the status.
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//
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return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
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}
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//*****************************************************************************
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//
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//! @brief Programs the given range of flash addresses.
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//!
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//! @param ui32DeviceNumber - Device number of the external flash
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//! @param pui8TxBuffer - Buffer to write the external flash data from
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//! @param ui32WriteAddress - Address to write to in the external flash
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//! @param ui32NumBytes - Number of bytes to write to the external flash
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//!
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//! This function uses the data in the provided pui8TxBuffer and copies it to
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//! the external flash at the address given by ui32WriteAddress. It will copy
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//! exactly ui32NumBytes of data from the original pui8TxBuffer pointer. The
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//! user is responsible for ensuring that they do not overflow the target flash
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//! memory or underflow the pui8TxBuffer array
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//
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//! @return 32-bit status
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
uint32_t
|
||
|
|
am_devices_mb85rc256v_nonblocking_write(void *pHandle, uint8_t *pui8TxBuffer,
|
||
|
|
uint32_t ui32WriteAddress,
|
||
|
|
uint32_t ui32NumBytes,
|
||
|
|
am_hal_iom_callback_t pfnCallback,
|
||
|
|
void *pCallbackCtxt)
|
||
|
|
{
|
||
|
|
am_hal_iom_transfer_t Transaction;
|
||
|
|
am_devices_iom_mb85rc256v_t *pIom = (am_devices_iom_mb85rc256v_t *)pHandle;
|
||
|
|
|
||
|
|
Transaction.ui8RepeatCount = 0;
|
||
|
|
Transaction.ui32PauseCondition = 0;
|
||
|
|
Transaction.ui32StatusSetClr = 0;
|
||
|
|
Transaction.ui8Priority = 1; // High priority for now.
|
||
|
|
Transaction.uPeerInfo.ui32I2CDevAddr = AM_DEVICES_MB85RC256V_SLAVE_ID;
|
||
|
|
Transaction.bContinue = false;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set up the IOM transaction.
|
||
|
|
//
|
||
|
|
Transaction.eDirection = AM_HAL_IOM_TX;
|
||
|
|
Transaction.ui32InstrLen = 2;
|
||
|
|
Transaction.ui32Instr = ui32WriteAddress & 0x0000FFFF;
|
||
|
|
Transaction.ui32NumBytes = ui32NumBytes;
|
||
|
|
Transaction.pui32TxBuffer = (uint32_t *)pui8TxBuffer;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Add this transaction to the command queue (no callback).
|
||
|
|
//
|
||
|
|
if (am_hal_iom_nonblocking_transfer(pIom->pIomHandle, &Transaction, pfnCallback, pCallbackCtxt))
|
||
|
|
{
|
||
|
|
return AM_DEVICES_MB85RC256V_STATUS_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Return the status.
|
||
|
|
//
|
||
|
|
return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @brief Reads the contents of the fram into a buffer.
|
||
|
|
//!
|
||
|
|
//! @param pui8RxBuffer - Buffer to store the received data from the flash
|
||
|
|
//! @param ui32ReadAddress - Address of desired data in external flash
|
||
|
|
//! @param ui32NumBytes - Number of bytes to read from external flash
|
||
|
|
//!
|
||
|
|
//! This function reads the external flash at the provided address and stores
|
||
|
|
//! the received data into the provided buffer location. This function will
|
||
|
|
//! only store ui32NumBytes worth of data.
|
||
|
|
//
|
||
|
|
//! @return 32-bit status
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
uint32_t
|
||
|
|
am_devices_mb85rc256v_blocking_read(void *pHandle, uint8_t *pui8RxBuffer,
|
||
|
|
uint32_t ui32ReadAddress,
|
||
|
|
uint32_t ui32NumBytes)
|
||
|
|
{
|
||
|
|
am_devices_iom_mb85rc256v_t *pIom = (am_devices_iom_mb85rc256v_t *)pHandle;
|
||
|
|
|
||
|
|
if (am_device_command_read(pIom->pIomHandle, AM_DEVICES_MB85RC256V_SLAVE_ID, 2,
|
||
|
|
(ui32ReadAddress & 0x0000FFFF),
|
||
|
|
false, (uint32_t *)pui8RxBuffer, ui32NumBytes))
|
||
|
|
{
|
||
|
|
return AM_DEVICES_MB85RC256V_STATUS_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Return the status.
|
||
|
|
//
|
||
|
|
return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @brief Reads the contents of the fram into a buffer.
|
||
|
|
//!
|
||
|
|
//! @param pui8RxBuffer - Buffer to store the received data from the flash
|
||
|
|
//! @param ui32ReadAddress - Address of desired data in external flash
|
||
|
|
//! @param ui32NumBytes - Number of bytes to read from external flash
|
||
|
|
//!
|
||
|
|
//! This function reads the external flash at the provided address and stores
|
||
|
|
//! the received data into the provided buffer location. This function will
|
||
|
|
//! only store ui32NumBytes worth of data.
|
||
|
|
//
|
||
|
|
//! @return 32-bit status
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
uint32_t
|
||
|
|
am_devices_mb85rc256v_nonblocking_read(void *pHandle, uint8_t *pui8RxBuffer,
|
||
|
|
uint32_t ui32ReadAddress,
|
||
|
|
uint32_t ui32NumBytes,
|
||
|
|
am_hal_iom_callback_t pfnCallback,
|
||
|
|
void * pCallbackCtxt)
|
||
|
|
{
|
||
|
|
am_hal_iom_transfer_t Transaction;
|
||
|
|
am_devices_iom_mb85rc256v_t *pIom = (am_devices_iom_mb85rc256v_t *)pHandle;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set up the IOM transaction.
|
||
|
|
//
|
||
|
|
Transaction.ui8Priority = 1; // High priority for now.
|
||
|
|
Transaction.eDirection = AM_HAL_IOM_RX;
|
||
|
|
Transaction.ui32InstrLen = 2;
|
||
|
|
Transaction.ui32Instr = (ui32ReadAddress & 0x0000FFFF);
|
||
|
|
Transaction.ui32NumBytes = ui32NumBytes;
|
||
|
|
Transaction.pui32RxBuffer = (uint32_t *)pui8RxBuffer;
|
||
|
|
Transaction.uPeerInfo.ui32I2CDevAddr = AM_DEVICES_MB85RC256V_SLAVE_ID;
|
||
|
|
Transaction.ui8RepeatCount = 0;
|
||
|
|
Transaction.ui32PauseCondition = 0;
|
||
|
|
Transaction.ui32StatusSetClr = 0;
|
||
|
|
Transaction.bContinue = false;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Start the transaction.
|
||
|
|
//
|
||
|
|
if (am_hal_iom_nonblocking_transfer(pIom->pIomHandle, &Transaction, pfnCallback, pCallbackCtxt))
|
||
|
|
{
|
||
|
|
return AM_DEVICES_MB85RC256V_STATUS_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Return the status.
|
||
|
|
//
|
||
|
|
return AM_DEVICES_MB85RC256V_STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|