744 lines
27 KiB
C
744 lines
27 KiB
C
//*----------------------------------------------------------------------------
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//* ATMEL Microcontroller Software Support - ROUSSET -
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//*----------------------------------------------------------------------------
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//* The software is delivered "AS IS" without warranty or condition of any
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//* kind, either express, implied or statutory. This includes without
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//* limitation any warranty or condition with respect to merchantability or
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//* fitness for any particular purpose, or against the infringements of
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//* intellectual property rights of others.
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//*----------------------------------------------------------------------------
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//* File Name : mci_device.c
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//* Object : TEST DataFlash Functions
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//* Creation : FB 26/11/2002
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//*
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//*----------------------------------------------------------------------------
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#include <AT91C_MCI_Device.h>
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#include "stdio.h"
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#define AT91C_MCI_TIMEOUT 1000000 /* For AT91F_MCIDeviceWaitReady */
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#define BUFFER_SIZE_MCI_DEVICE 512
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#define MASTER_CLOCK 60000000
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#define FALSE 0
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#define TRUE 1
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//* External Functions
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extern void AT91F_ASM_MCI_Handler(void);
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//* Global Variables
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AT91S_MciDeviceFeatures MCI_Device_Features;
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AT91S_MciDeviceDesc MCI_Device_Desc;
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AT91S_MciDevice MCI_Device;
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#undef ENABLE_WRITE
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#undef MMC
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_SendCommand
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//* \brief Generic function to send a command to the MMC or SDCard
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//*----------------------------------------------------------------------------
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int AT91F_MCI_SendCommand (
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AT91PS_MciDevice pMCI_Device,
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unsigned int Cmd,
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unsigned int Arg)
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{
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unsigned int error,status;
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//unsigned int tick=0;
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// Send the command
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AT91C_BASE_MCI->MCI_ARGR = Arg;
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AT91C_BASE_MCI->MCI_CMDR = Cmd;
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// wait for CMDRDY Status flag to read the response
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do
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{
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status = AT91C_BASE_MCI->MCI_SR;
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//tick++;
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}
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while( !(status & AT91C_MCI_CMDRDY) );//&& (tick<100) );
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// Test error ==> if crc error and response R3 ==> don't check error
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error = (AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR;
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if(error != 0 )
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{
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// if the command is SEND_OP_COND the CRC error flag is always present (cf : R3 response)
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if ( (Cmd != AT91C_SDCARD_APP_OP_COND_CMD) && (Cmd != AT91C_MMC_SEND_OP_COND_CMD) )
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return ((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR);
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else
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{
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if (error != AT91C_MCI_RCRCE)
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return ((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR);
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}
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}
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return AT91C_CMD_SEND_OK;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_SDCard_SendAppCommand
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//* \brief Specific function to send a specific command to the SDCard
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//*----------------------------------------------------------------------------
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int AT91F_MCI_SDCard_SendAppCommand (
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AT91PS_MciDevice pMCI_Device,
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unsigned int Cmd_App,
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unsigned int Arg )
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{
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unsigned int status;
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//unsigned int tick=0;
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// Send the CMD55 for application specific command
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AT91C_BASE_MCI->MCI_ARGR = (pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address << 16 );
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AT91C_BASE_MCI->MCI_CMDR = AT91C_APP_CMD;
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// wait for CMDRDY Status flag to read the response
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do
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{
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status = AT91C_BASE_MCI->MCI_SR;
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//tick++;
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}
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while( !(status & AT91C_MCI_CMDRDY) );//&& (tick<100) );
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// if an error occurs
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if (((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR) != 0 )
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return ((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR);
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// check if it is a specific command and then send the command
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if ( (Cmd_App && AT91C_SDCARD_APP_ALL_CMD) == 0)
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return AT91C_CMD_SEND_ERROR;
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return( AT91F_MCI_SendCommand(pMCI_Device,Cmd_App,Arg) );
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_GetStatus
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//* \brief Addressed card sends its status register
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//*----------------------------------------------------------------------------
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int AT91F_MCI_GetStatus(AT91PS_MciDevice pMCI_Device,unsigned int relative_card_address)
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{
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if (AT91F_MCI_SendCommand(pMCI_Device,
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AT91C_SEND_STATUS_CMD,
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relative_card_address <<16) == AT91C_CMD_SEND_OK)
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return (AT91C_BASE_MCI->MCI_RSPR[0]);
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return AT91C_CMD_SEND_ERROR;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_Device_Handler
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//* \brief MCI C interrupt handler
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//*----------------------------------------------------------------------------
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void AT91F_MCI_Device_Handler(
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AT91PS_MciDevice pMCI_Device,
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unsigned int status)
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{
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// If End of Tx Buffer Empty interrupt occurred
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if ( status & AT91C_MCI_TXBUFE )
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{
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AT91C_BASE_MCI->MCI_IDR = AT91C_MCI_TXBUFE;
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_TXTDIS;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_IDLE;
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} // End of if AT91C_MCI_TXBUFF
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// If End of Rx Buffer Full interrupt occurred
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if ( status & AT91C_MCI_RXBUFF )
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{
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AT91C_BASE_MCI->MCI_IDR = AT91C_MCI_RXBUFF;
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_RXTDIS;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_IDLE;
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} // End of if AT91C_MCI_RXBUFF
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_Handler
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//* \brief MCI Handler
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//*----------------------------------------------------------------------------
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void AT91F_MCI_Handler(void)
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{
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int status;
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status = ( AT91C_BASE_MCI->MCI_SR & AT91C_BASE_MCI->MCI_IMR );
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AT91F_MCI_Device_Handler(&MCI_Device,status);
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_ReadBlock
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//* \brief Read an ENTIRE block or PARTIAL block
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//*----------------------------------------------------------------------------
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int AT91F_MCI_ReadBlock(
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AT91PS_MciDevice pMCI_Device,
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int src,
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unsigned int *dataBuffer,
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int sizeToRead )
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{
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////////////////////////////////////////////////////////////////////////////////////////////
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if(pMCI_Device->pMCI_DeviceDesc->state != AT91C_MCI_IDLE)
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return AT91C_READ_ERROR;
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if( (AT91F_MCI_GetStatus(pMCI_Device,pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address) & AT91C_SR_READY_FOR_DATA) != AT91C_SR_READY_FOR_DATA)
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return AT91C_READ_ERROR;
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if ( (src + sizeToRead) > pMCI_Device->pMCI_DeviceFeatures->Memory_Capacity )
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return AT91C_READ_ERROR;
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// If source does not fit a begin of a block
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if ( (src % pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length) != 0 )
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return AT91C_READ_ERROR;
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// Test if the MMC supports Partial Read Block
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// ALWAYS SUPPORTED IN SD Memory Card
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if( (sizeToRead < pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length)
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&& (pMCI_Device->pMCI_DeviceFeatures->Read_Partial == 0x00) )
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return AT91C_READ_ERROR;
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if( sizeToRead > pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length)
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return AT91C_READ_ERROR;
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////////////////////////////////////////////////////////////////////////////////////////////
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// Init Mode Register
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AT91C_BASE_MCI->MCI_MR |= ((pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length << 16) | AT91C_MCI_PDCMODE);
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if (sizeToRead %4)
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sizeToRead = (sizeToRead /4)+1;
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else
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sizeToRead = sizeToRead/4;
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AT91C_BASE_PDC_MCI->PDC_PTCR = (AT91C_PDC_TXTDIS | AT91C_PDC_RXTDIS);
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AT91C_BASE_PDC_MCI->PDC_RPR = (unsigned int)dataBuffer;
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AT91C_BASE_PDC_MCI->PDC_RCR = sizeToRead;
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// Send the Read single block command
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if ( AT91F_MCI_SendCommand(pMCI_Device, AT91C_READ_SINGLE_BLOCK_CMD, src) != AT91C_CMD_SEND_OK )
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return AT91C_READ_ERROR;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_RX_SINGLE_BLOCK;
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// Enable AT91C_MCI_RXBUFF Interrupt
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AT91C_BASE_MCI->MCI_IER = AT91C_MCI_RXBUFF;
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// (PDC) Receiver Transfer Enable
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_RXTEN;
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return AT91C_READ_OK;
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}
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#ifdef ENABLE_WRITE
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_WriteBlock
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//* \brief Write an ENTIRE block but not always PARTIAL block !!!
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//*----------------------------------------------------------------------------
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int AT91F_MCI_WriteBlock(
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AT91PS_MciDevice pMCI_Device,
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int dest,
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unsigned int *dataBuffer,
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int sizeToWrite )
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{
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////////////////////////////////////////////////////////////////////////////////////////////
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if( pMCI_Device->pMCI_DeviceDesc->state != AT91C_MCI_IDLE)
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return AT91C_WRITE_ERROR;
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if( (AT91F_MCI_GetStatus(pMCI_Device,pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address) & AT91C_SR_READY_FOR_DATA) != AT91C_SR_READY_FOR_DATA)
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return AT91C_WRITE_ERROR;
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if ( (dest + sizeToWrite) > pMCI_Device->pMCI_DeviceFeatures->Memory_Capacity )
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return AT91C_WRITE_ERROR;
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// If source does not fit a begin of a block
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if ( (dest % pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length) != 0 )
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return AT91C_WRITE_ERROR;
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// Test if the MMC supports Partial Write Block
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if( (sizeToWrite < pMCI_Device->pMCI_DeviceFeatures->Max_Write_DataBlock_Length)
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&& (pMCI_Device->pMCI_DeviceFeatures->Write_Partial == 0x00) )
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return AT91C_WRITE_ERROR;
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if( sizeToWrite > pMCI_Device->pMCI_DeviceFeatures->Max_Write_DataBlock_Length )
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return AT91C_WRITE_ERROR;
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////////////////////////////////////////////////////////////////////////////////////////////
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// Init Mode Register
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AT91C_BASE_MCI->MCI_MR |= ((pMCI_Device->pMCI_DeviceFeatures->Max_Write_DataBlock_Length << 16) | AT91C_MCI_PDCMODE);
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if (sizeToWrite %4)
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sizeToWrite = (sizeToWrite /4)+1;
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else
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sizeToWrite = sizeToWrite/4;
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// Init PDC for write sequence
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AT91C_BASE_PDC_MCI->PDC_PTCR = (AT91C_PDC_TXTDIS | AT91C_PDC_RXTDIS);
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AT91C_BASE_PDC_MCI->PDC_TPR = (unsigned int) dataBuffer;
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AT91C_BASE_PDC_MCI->PDC_TCR = sizeToWrite;
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// Send the write single block command
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if ( AT91F_MCI_SendCommand(pMCI_Device, AT91C_WRITE_BLOCK_CMD, dest) != AT91C_CMD_SEND_OK)
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return AT91C_WRITE_ERROR;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_TX_SINGLE_BLOCK;
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// Enable AT91C_MCI_TXBUFE Interrupt
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AT91C_BASE_MCI->MCI_IER = AT91C_MCI_TXBUFE;
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// Enables TX for PDC transfert requests
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_TXTEN;
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return AT91C_WRITE_OK;
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}
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#endif
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#ifdef MMC
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//*------------------------------------------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_SelectCard
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//* \brief Toggles a card between the Stand_by and Transfer states or between Programming and Disconnect states
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//*------------------------------------------------------------------------------------------------------------
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int AT91F_MCI_MMC_SelectCard(AT91PS_MciDevice pMCI_Device, unsigned int relative_card_address)
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{
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int status;
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//* Check if the MMC card chosen is already the selected one
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status = AT91F_MCI_GetStatus(pMCI_Device,relative_card_address);
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if (status < 0)
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return AT91C_CARD_SELECTED_ERROR;
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if ((status & AT91C_SR_CARD_SELECTED) == AT91C_SR_CARD_SELECTED)
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return AT91C_CARD_SELECTED_OK;
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//* Search for the MMC Card to be selected, status = the Corresponding Device Number
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status = 0;
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while( (pMCI_Device->pMCI_DeviceFeatures[status].Relative_Card_Address != relative_card_address)
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&& (status < AT91C_MAX_MCI_CARDS) )
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status++;
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if (status > AT91C_MAX_MCI_CARDS)
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return AT91C_CARD_SELECTED_ERROR;
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if (AT91F_MCI_SendCommand( pMCI_Device,
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AT91C_SEL_DESEL_CARD_CMD,
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pMCI_Device->pMCI_DeviceFeatures[status].Relative_Card_Address << 16) == AT91C_CMD_SEND_OK)
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return AT91C_CARD_SELECTED_OK;
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return AT91C_CARD_SELECTED_ERROR;
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}
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#endif
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_GetCSD
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//* \brief Asks to the specified card to send its CSD
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//*----------------------------------------------------------------------------
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int AT91F_MCI_GetCSD (AT91PS_MciDevice pMCI_Device, unsigned int relative_card_address , unsigned int * response)
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{
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if(AT91F_MCI_SendCommand(pMCI_Device,
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AT91C_SEND_CSD_CMD,
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(relative_card_address << 16)) != AT91C_CMD_SEND_OK)
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return AT91C_CMD_SEND_ERROR;
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response[0] = AT91C_BASE_MCI->MCI_RSPR[0];
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response[1] = AT91C_BASE_MCI->MCI_RSPR[1];
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response[2] = AT91C_BASE_MCI->MCI_RSPR[2];
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response[3] = AT91C_BASE_MCI->MCI_RSPR[3];
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return AT91C_CMD_SEND_OK;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_SetBlocklength
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//* \brief Select a block length for all following block commands (R/W)
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//*----------------------------------------------------------------------------
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int AT91F_MCI_SetBlocklength(AT91PS_MciDevice pMCI_Device,unsigned int length)
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{
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return( AT91F_MCI_SendCommand(pMCI_Device, AT91C_SET_BLOCKLEN_CMD, length) );
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}
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#ifdef MMC
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_GetAllOCR
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//* \brief Asks to all cards to send their operations conditions
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//*----------------------------------------------------------------------------
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int AT91F_MCI_MMC_GetAllOCR (AT91PS_MciDevice pMCI_Device)
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{
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unsigned int response =0x0;
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while(1)
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{
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response = AT91F_MCI_SendCommand(pMCI_Device,
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AT91C_MMC_SEND_OP_COND_CMD,
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AT91C_MMC_HOST_VOLTAGE_RANGE);
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if (response != AT91C_CMD_SEND_OK)
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return AT91C_INIT_ERROR;
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response = AT91C_BASE_MCI->MCI_RSPR[0];
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if ( (response & AT91C_CARD_POWER_UP_BUSY) == AT91C_CARD_POWER_UP_BUSY)
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return(response);
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}
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}
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#endif
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#ifdef MMC
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_GetAllCID
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//* \brief Asks to the MMC on the chosen slot to send its CID
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//*----------------------------------------------------------------------------
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int AT91F_MCI_MMC_GetAllCID (AT91PS_MciDevice pMCI_Device, unsigned int *response)
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{
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int Nb_Cards_Found=-1;
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while(1)
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{
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if(AT91F_MCI_SendCommand(pMCI_Device,
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AT91C_MMC_ALL_SEND_CID_CMD,
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AT91C_NO_ARGUMENT) != AT91C_CMD_SEND_OK)
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return Nb_Cards_Found;
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else
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{
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Nb_Cards_Found = 0;
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//* Assignation of the relative address to the MMC CARD
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pMCI_Device->pMCI_DeviceFeatures[Nb_Cards_Found].Relative_Card_Address = Nb_Cards_Found + AT91C_FIRST_RCA;
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//* Set the insert flag
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pMCI_Device->pMCI_DeviceFeatures[Nb_Cards_Found].Card_Inserted = AT91C_MMC_CARD_INSERTED;
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if (AT91F_MCI_SendCommand(pMCI_Device,
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AT91C_MMC_SET_RELATIVE_ADDR_CMD,
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(Nb_Cards_Found + AT91C_FIRST_RCA) << 16) != AT91C_CMD_SEND_OK)
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return AT91C_CMD_SEND_ERROR;
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//* If no error during assignation address ==> Increment Nb_cards_Found
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Nb_Cards_Found++ ;
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}
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}
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}
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#endif
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#ifdef MMC
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_Init
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//* \brief Return the MMC initialisation status
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//*----------------------------------------------------------------------------
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int AT91F_MCI_MMC_Init (AT91PS_MciDevice pMCI_Device)
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{
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unsigned int tab_response[4];
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unsigned int mult,blocknr;
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unsigned int i,Nb_Cards_Found=0;
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//* Resets all MMC Cards in Idle state
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AT91F_MCI_SendCommand(pMCI_Device, AT91C_MMC_GO_IDLE_STATE_CMD, AT91C_NO_ARGUMENT);
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if(AT91F_MCI_MMC_GetAllOCR(pMCI_Device) == AT91C_INIT_ERROR)
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return AT91C_INIT_ERROR;
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Nb_Cards_Found = AT91F_MCI_MMC_GetAllCID(pMCI_Device,tab_response);
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if (Nb_Cards_Found != AT91C_CMD_SEND_ERROR)
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{
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//* Set the Mode Register
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AT91C_BASE_MCI->MCI_MR = AT91C_MCI_MR_PDCMODE;
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for(i = 0; i < Nb_Cards_Found; i++)
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{
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if (AT91F_MCI_GetCSD(pMCI_Device,
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pMCI_Device->pMCI_DeviceFeatures[i].Relative_Card_Address,
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tab_response) != AT91C_CMD_SEND_OK)
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pMCI_Device->pMCI_DeviceFeatures[i].Relative_Card_Address = 0;
|
|
else
|
|
{
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Max_Read_DataBlock_Length = 1 << ((tab_response[1] >> AT91C_CSD_RD_B_LEN_S) & AT91C_CSD_RD_B_LEN_M );
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Max_Write_DataBlock_Length = 1 << ((tab_response[3] >> AT91C_CSD_WBLEN_S) & AT91C_CSD_WBLEN_M );
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Sector_Size = 1 + ((tab_response[2] >> AT91C_CSD_v22_SECT_SIZE_S) & AT91C_CSD_v22_SECT_SIZE_M );
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Read_Partial = (tab_response[1] >> AT91C_CSD_RD_B_PAR_S) & AT91C_CSD_RD_B_PAR_M;
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Write_Partial = (tab_response[3] >> AT91C_CSD_WBLOCK_P_S) & AT91C_CSD_WBLOCK_P_M;
|
|
|
|
// None in MMC specification version 2.2
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Erase_Block_Enable = 0;
|
|
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Read_Block_Misalignment = (tab_response[1] >> AT91C_CSD_RD_B_MIS_S) & AT91C_CSD_RD_B_MIS_M;
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Write_Block_Misalignment = (tab_response[1] >> AT91C_CSD_WR_B_MIS_S) & AT91C_CSD_WR_B_MIS_M;
|
|
|
|
//// Compute Memory Capacity
|
|
// compute MULT
|
|
mult = 1 << ( ((tab_response[2] >> AT91C_CSD_C_SIZE_M_S) & AT91C_CSD_C_SIZE_M_M) + 2 );
|
|
// compute MSB of C_SIZE
|
|
blocknr = ((tab_response[1] >> AT91C_CSD_CSIZE_H_S) & AT91C_CSD_CSIZE_H_M) << 2;
|
|
// compute MULT * (LSB of C-SIZE + MSB already computed + 1) = BLOCKNR
|
|
blocknr = mult * ( ( blocknr + ( (tab_response[2] >> AT91C_CSD_CSIZE_L_S) & AT91C_CSD_CSIZE_L_M) ) + 1 );
|
|
|
|
pMCI_Device->pMCI_DeviceFeatures[i].Memory_Capacity = pMCI_Device->pMCI_DeviceFeatures[i].Max_Read_DataBlock_Length * blocknr;
|
|
//// End of Compute Memory Capacity
|
|
|
|
} // end of else
|
|
} // end of for
|
|
|
|
return AT91C_INIT_OK;
|
|
} // end of if
|
|
|
|
return AT91C_INIT_ERROR;
|
|
}
|
|
#endif
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_MCI_SDCard_GetOCR
|
|
//* \brief Asks to all cards to send their operations conditions
|
|
//*----------------------------------------------------------------------------
|
|
int AT91F_MCI_SDCard_GetOCR (AT91PS_MciDevice pMCI_Device)
|
|
{
|
|
unsigned int response =0x0;
|
|
|
|
// The RCA to be used for CMD55 in Idle state shall be the card's default RCA=0x0000.
|
|
pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address = 0x0;
|
|
|
|
while( (response & AT91C_CARD_POWER_UP_BUSY) != AT91C_CARD_POWER_UP_BUSY )
|
|
{
|
|
response = AT91F_MCI_SDCard_SendAppCommand(pMCI_Device,
|
|
AT91C_SDCARD_APP_OP_COND_CMD,
|
|
AT91C_MMC_HOST_VOLTAGE_RANGE);
|
|
if (response != AT91C_CMD_SEND_OK)
|
|
return AT91C_INIT_ERROR;
|
|
|
|
response = AT91C_BASE_MCI->MCI_RSPR[0];
|
|
}
|
|
|
|
return(AT91C_BASE_MCI->MCI_RSPR[0]);
|
|
}
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_MCI_SDCard_GetCID
|
|
//* \brief Asks to the SDCard on the chosen slot to send its CID
|
|
//*----------------------------------------------------------------------------
|
|
int AT91F_MCI_SDCard_GetCID (AT91PS_MciDevice pMCI_Device, unsigned int *response)
|
|
{
|
|
if(AT91F_MCI_SendCommand(pMCI_Device,
|
|
AT91C_ALL_SEND_CID_CMD,
|
|
AT91C_NO_ARGUMENT) != AT91C_CMD_SEND_OK)
|
|
return AT91C_CMD_SEND_ERROR;
|
|
|
|
response[0] = AT91C_BASE_MCI->MCI_RSPR[0];
|
|
response[1] = AT91C_BASE_MCI->MCI_RSPR[1];
|
|
response[2] = AT91C_BASE_MCI->MCI_RSPR[2];
|
|
response[3] = AT91C_BASE_MCI->MCI_RSPR[3];
|
|
|
|
return AT91C_CMD_SEND_OK;
|
|
}
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_MCI_SDCard_SetBusWidth
|
|
//* \brief Set bus width for SDCard
|
|
//*----------------------------------------------------------------------------
|
|
int AT91F_MCI_SDCard_SetBusWidth(AT91PS_MciDevice pMCI_Device)
|
|
{
|
|
volatile int ret_value;
|
|
char bus_width;
|
|
|
|
do
|
|
{
|
|
ret_value =AT91F_MCI_GetStatus(pMCI_Device,pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address);
|
|
}
|
|
while((ret_value > 0) && ((ret_value & AT91C_SR_READY_FOR_DATA) == 0));
|
|
|
|
// Select Card
|
|
AT91F_MCI_SendCommand(pMCI_Device,
|
|
AT91C_SEL_DESEL_CARD_CMD,
|
|
(pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address)<<16);
|
|
|
|
// Set bus width for Sdcard
|
|
if(pMCI_Device->pMCI_DeviceDesc->SDCard_bus_width == AT91C_MCI_SCDBUS)
|
|
bus_width = AT91C_BUS_WIDTH_4BITS;
|
|
else bus_width = AT91C_BUS_WIDTH_1BIT;
|
|
|
|
if (AT91F_MCI_SDCard_SendAppCommand(pMCI_Device,AT91C_SDCARD_SET_BUS_WIDTH_CMD,bus_width) != AT91C_CMD_SEND_OK)
|
|
return AT91C_CMD_SEND_ERROR;
|
|
|
|
return AT91C_CMD_SEND_OK;
|
|
}
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_MCI_SDCard_Init
|
|
//* \brief Return the SDCard initialisation status
|
|
//*----------------------------------------------------------------------------
|
|
int AT91F_MCI_SDCard_Init (AT91PS_MciDevice pMCI_Device)
|
|
{
|
|
unsigned int tab_response[4];
|
|
unsigned int mult,blocknr;
|
|
|
|
AT91F_MCI_SendCommand(pMCI_Device, AT91C_GO_IDLE_STATE_CMD, AT91C_NO_ARGUMENT);
|
|
|
|
if(AT91F_MCI_SDCard_GetOCR(pMCI_Device) == AT91C_INIT_ERROR)
|
|
return AT91C_INIT_ERROR;
|
|
|
|
if (AT91F_MCI_SDCard_GetCID(pMCI_Device,tab_response) == AT91C_CMD_SEND_OK)
|
|
{
|
|
pMCI_Device->pMCI_DeviceFeatures->Card_Inserted = AT91C_SD_CARD_INSERTED;
|
|
|
|
if (AT91F_MCI_SendCommand(pMCI_Device, AT91C_SET_RELATIVE_ADDR_CMD, 0) == AT91C_CMD_SEND_OK)
|
|
{
|
|
pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address = (AT91C_BASE_MCI->MCI_RSPR[0] >> 16);
|
|
if (AT91F_MCI_GetCSD(pMCI_Device,pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address,tab_response) == AT91C_CMD_SEND_OK)
|
|
{
|
|
pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length = 1 << ((tab_response[1] >> AT91C_CSD_RD_B_LEN_S) & AT91C_CSD_RD_B_LEN_M );
|
|
pMCI_Device->pMCI_DeviceFeatures->Max_Write_DataBlock_Length = 1 << ((tab_response[3] >> AT91C_CSD_WBLEN_S) & AT91C_CSD_WBLEN_M );
|
|
pMCI_Device->pMCI_DeviceFeatures->Sector_Size = 1 + ((tab_response[2] >> AT91C_CSD_v21_SECT_SIZE_S) & AT91C_CSD_v21_SECT_SIZE_M );
|
|
pMCI_Device->pMCI_DeviceFeatures->Read_Partial = (tab_response[1] >> AT91C_CSD_RD_B_PAR_S) & AT91C_CSD_RD_B_PAR_M;
|
|
pMCI_Device->pMCI_DeviceFeatures->Write_Partial = (tab_response[3] >> AT91C_CSD_WBLOCK_P_S) & AT91C_CSD_WBLOCK_P_M;
|
|
pMCI_Device->pMCI_DeviceFeatures->Erase_Block_Enable = (tab_response[3] >> AT91C_CSD_v21_ER_BLEN_EN_S) & AT91C_CSD_v21_ER_BLEN_EN_M;
|
|
pMCI_Device->pMCI_DeviceFeatures->Read_Block_Misalignment = (tab_response[1] >> AT91C_CSD_RD_B_MIS_S) & AT91C_CSD_RD_B_MIS_M;
|
|
pMCI_Device->pMCI_DeviceFeatures->Write_Block_Misalignment = (tab_response[1] >> AT91C_CSD_WR_B_MIS_S) & AT91C_CSD_WR_B_MIS_M;
|
|
|
|
//// Compute Memory Capacity
|
|
// compute MULT
|
|
mult = 1 << ( ((tab_response[2] >> AT91C_CSD_C_SIZE_M_S) & AT91C_CSD_C_SIZE_M_M) + 2 );
|
|
// compute MSB of C_SIZE
|
|
blocknr = ((tab_response[1] >> AT91C_CSD_CSIZE_H_S) & AT91C_CSD_CSIZE_H_M) << 2;
|
|
// compute MULT * (LSB of C-SIZE + MSB already computed + 1) = BLOCKNR
|
|
blocknr = mult * ( ( blocknr + ( (tab_response[2] >> AT91C_CSD_CSIZE_L_S) & AT91C_CSD_CSIZE_L_M) ) + 1 );
|
|
|
|
pMCI_Device->pMCI_DeviceFeatures->Memory_Capacity = pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length * blocknr;
|
|
//// End of Compute Memory Capacity
|
|
printf("SD-Card: %d Bytes\n\r", pMCI_Device->pMCI_DeviceFeatures->Memory_Capacity);
|
|
|
|
if( AT91F_MCI_SDCard_SetBusWidth(pMCI_Device) == AT91C_CMD_SEND_OK )
|
|
{
|
|
if (AT91F_MCI_SetBlocklength(pMCI_Device,pMCI_Device->pMCI_DeviceFeatures->Max_Read_DataBlock_Length) == AT91C_CMD_SEND_OK)
|
|
return AT91C_INIT_OK;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return AT91C_INIT_ERROR;
|
|
}
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_CfgDevice
|
|
//* \brief This function is used to initialise MMC or SDCard Features
|
|
//*----------------------------------------------------------------------------
|
|
void AT91F_CfgDevice(void)
|
|
{
|
|
// Init Device Structure
|
|
|
|
MCI_Device_Features.Relative_Card_Address = 0;
|
|
MCI_Device_Features.Card_Inserted = AT91C_CARD_REMOVED;
|
|
MCI_Device_Features.Max_Read_DataBlock_Length = 0;
|
|
MCI_Device_Features.Max_Write_DataBlock_Length = 0;
|
|
MCI_Device_Features.Read_Partial = 0;
|
|
MCI_Device_Features.Write_Partial = 0;
|
|
MCI_Device_Features.Erase_Block_Enable = 0;
|
|
MCI_Device_Features.Sector_Size = 0;
|
|
MCI_Device_Features.Memory_Capacity = 0;
|
|
|
|
MCI_Device_Desc.state = AT91C_MCI_IDLE;
|
|
MCI_Device_Desc.SDCard_bus_width = AT91C_MCI_SCDBUS;
|
|
|
|
// Init AT91S_DataFlash Global Structure, by default AT45DB choosen !!!
|
|
MCI_Device.pMCI_DeviceDesc = &MCI_Device_Desc;
|
|
MCI_Device.pMCI_DeviceFeatures = &MCI_Device_Features;
|
|
|
|
}
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_MCI_Init
|
|
//* \brief Initialsise Card
|
|
//*----------------------------------------------------------------------------
|
|
int AT91F_MCI_Init(void)
|
|
{
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////
|
|
// MCI Init : common to MMC and SDCard
|
|
///////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Set up PIO SDC_TYPE to switch on MMC/SDCard and not DataFlash Card
|
|
AT91F_PIO_CfgOutput(AT91C_BASE_PIOB,AT91C_PIO_PB7);
|
|
AT91F_PIO_SetOutput(AT91C_BASE_PIOB,AT91C_PIO_PB7);
|
|
|
|
// Init MCI for MMC and SDCard interface
|
|
AT91F_MCI_CfgPIO();
|
|
AT91F_MCI_CfgPMC();
|
|
AT91F_PDC_Open(AT91C_BASE_PDC_MCI);
|
|
|
|
// Disable all the interrupts
|
|
AT91C_BASE_MCI->MCI_IDR = 0xFFFFFFFF;
|
|
|
|
// Init MCI Device Structures
|
|
AT91F_CfgDevice();
|
|
|
|
// Configure MCI interrupt
|
|
AT91F_AIC_ConfigureIt(AT91C_BASE_AIC,
|
|
AT91C_ID_MCI,
|
|
AT91C_AIC_PRIOR_HIGHEST,
|
|
AT91C_AIC_SRCTYPE_INT_LEVEL_SENSITIVE,
|
|
AT91F_ASM_MCI_Handler);
|
|
|
|
// Enable MCI interrupt
|
|
AT91F_AIC_EnableIt(AT91C_BASE_AIC,AT91C_ID_MCI);
|
|
|
|
// Enable Receiver
|
|
AT91F_US_EnableRx((AT91PS_USART) AT91C_BASE_DBGU);
|
|
|
|
AT91F_MCI_Configure(AT91C_BASE_MCI,
|
|
AT91C_MCI_DTOR_1MEGA_CYCLES,
|
|
AT91C_MCI_MR_PDCMODE, // 15MHz for MCK = 60MHz (CLKDIV = 1)
|
|
AT91C_MCI_SDCARD_4BITS_SLOTA);
|
|
|
|
if(AT91F_MCI_SDCard_Init(&MCI_Device) != AT91C_INIT_OK)
|
|
return FALSE;
|
|
else
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
//*----------------------------------------------------------------------------
|
|
//* \fn AT91F_MCIDeviceWaitReady
|
|
//* \brief Wait for MCI Device ready
|
|
//*----------------------------------------------------------------------------
|
|
void AT91F_MCIDeviceWaitReady(unsigned int timeout)
|
|
{
|
|
volatile int status;
|
|
|
|
do
|
|
{
|
|
status = AT91C_BASE_MCI->MCI_SR;
|
|
timeout--;
|
|
}
|
|
while( !(status & AT91C_MCI_NOTBUSY) && (timeout>0) );
|
|
}
|
|
|
|
unsigned int swab32(unsigned int data)
|
|
{
|
|
unsigned int res = 0;
|
|
|
|
res = (data & 0x000000ff) << 24 |
|
|
(data & 0x0000ff00) << 8 |
|
|
(data & 0x00ff0000) >> 8 |
|
|
(data & 0xff000000) >> 24;
|
|
|
|
return res;
|
|
}
|
|
|
|
//*--------------------------------------------------------------------
|
|
//* \fn AT91F_MCI_ReadBlockSwab
|
|
//* \brief Read Block and swap byte order
|
|
//*--------------------------------------------------------------------
|
|
int AT91F_MCI_ReadBlockSwab(
|
|
AT91PS_MciDevice pMCI_Device,
|
|
int src,
|
|
unsigned int *databuffer,
|
|
int sizeToRead)
|
|
{
|
|
int i;
|
|
unsigned char *buf = (unsigned char *)databuffer;
|
|
|
|
//* Read Block 1
|
|
for(i=0;i<BUFFER_SIZE_MCI_DEVICE;i++)
|
|
*buf++ = 0x00;
|
|
AT91F_MCI_ReadBlock(&MCI_Device,src,databuffer,sizeToRead);
|
|
|
|
//* Wait end of Read
|
|
AT91F_MCIDeviceWaitReady(AT91C_MCI_TIMEOUT);
|
|
|
|
{
|
|
int index;
|
|
unsigned int *uiBuffer = databuffer;
|
|
|
|
for(index = 0; index < 512/4; index++)
|
|
uiBuffer[index] = swab32(uiBuffer[index]);
|
|
}
|
|
return(1);
|
|
}
|
|
|