1 /* ----------------------------------------------------------------------------
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2 * ATMEL Microcontroller Software Support
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2010, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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33 * Interface for Serial Peripheral Interface (SPI) controller.
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40 /*----------------------------------------------------------------------------
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42 *----------------------------------------------------------------------------*/
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44 /*----------------------------------------------------------------------------
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46 *----------------------------------------------------------------------------*/
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50 * Here are several macros which should be used when configuring a SPI
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53 * \section qspi_configuration_macros SPI Configuration Macros
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57 * - \ref QSPI_DLYBCT
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61 /** Calculates the value of the CSR SCBR field given the baudrate and MCK. */
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62 #define QSPI_SCBR(baudrate, masterClock) ((uint32_t) (masterClock / baudrate) << 8)
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64 /** Calculates the value of the CSR DLYBS field given the desired delay (in ns) */
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65 #define QSPI_DLYBS(delay, masterClock) ((uint32_t) (((masterClock / 1000000) * delay) / 1000) << 16)
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67 /** Calculates the value of the CSR DLYBCT field given the desired delay (in ns) */
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68 #define QSPI_DLYBCT(delay, masterClock) ((uint32_t) (((masterClock / 1000000) * delay) / 32000) << 24)
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70 /*------------------------------------------------------------------------------ */
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76 /*----------------------------------------------------------------------------
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77 * Exported functions
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78 *----------------------------------------------------------------------------*/
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87 uint8_t Instruction;
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88 uint8_t InstAddrFlag;
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92 uint8_t ContinuousRead;
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93 uint8_t DummyCycles;
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100 extern volatile uint8_t INSTRE_Flag;
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101 extern void QSPI_Enable( Qspi* qspi ) ;
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102 extern void QSPI_Disable( Qspi* qspi ) ;
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103 extern void QSPI_EnableIt( Qspi* qspi, uint32_t dwSources ) ;
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104 extern void QSPI_DisableIt( Qspi* qspi, uint32_t dwSources ) ;
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105 extern uint32_t QSPI_GetItMask( Qspi* qspi );
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107 extern void QSPI_Configure( Qspi* qspi, uint32_t dwConfiguration ) ;
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108 void QSPI_ConfigureClock( Qspi* qspi,uint32_t dwConfiguration );
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109 extern void QSPI_SwReset( Qspi* qspi );
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111 extern void QSPI_ConfigureCs( Qspi* qspi, uint8_t spiCs );
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113 extern int QSPI_RxEmpty(Qspi *qspi);
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114 extern int QSPI_TxRdy(Qspi *qspi);
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116 extern uint32_t QSPI_Read( Qspi* qspi ) ;
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117 extern void QSPI_Write( Qspi* qspi, uint16_t wData ) ;
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118 extern void QSPI_WriteLast( Qspi* qspi, uint16_t wData );
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120 extern uint32_t QSPI_GetStatus( Qspi* qspi ) ;
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121 extern uint32_t QSPI_IsFinished( Qspi* pQspi ) ;
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123 extern uint32_t QSPI_IsEOFInst( Qspi* qspi );
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124 extern uint32_t QSPI_IsCsRise( Qspi* qspi );
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125 extern uint32_t QSPI_IsCsAsserted( Qspi* qspi );
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127 extern void QSPI_SendFrame( Qspi* qspi, qspiFrame *pFrame, AccesType ReadWrite);
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129 extern void QSPI_SendFrameToMem( Qspi* qspi, qspiFrame *pFrame, AccesType ReadWrite );
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135 #endif /* #ifndef _QSPI_ */
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