kopia lustrzana https://github.com/micropython/micropython
203 wiersze
6.1 KiB
C
203 wiersze
6.1 KiB
C
//*****************************************************************************
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// cc_pal.h
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//
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// Simplelink abstraction header file for CC3200
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//
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// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
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//
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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
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// 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
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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#ifndef __CC31xx_PAL_H__
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#define __CC31xx_PAL_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!
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\brief type definition for the spi channel file descriptor
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\note On each porting or platform the type could be whatever is needed - integer, pointer to structure etc.
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*/
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typedef int Fd_t;
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/*!
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\brief type definition for the host interrupt handler
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\param pValue - pointer to any memory strcuture. The value of this pointer is givven on
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registration of a new interrupt handler
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\note
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*/
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typedef void (*SL_P_EVENT_HANDLER)(void);
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#define P_EVENT_HANDLER SL_P_EVENT_HANDLER
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/*!
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\brief open spi communication port to be used for communicating with a SimpleLink device
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Given an interface name and option flags, this function opens the spi communication port
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and creates a file descriptor. This file descriptor can be used afterwards to read and
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write data from and to this specific spi channel.
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The SPI speed, clock polarity, clock phase, chip select and all other attributes are all
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set to hardcoded values in this function.
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\param ifName - points to the interface name/path. The interface name is an
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optional attributes that the simple link driver receives
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on opening the device. in systems that the spi channel is
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not implemented as part of the os device drivers, this
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parameter could be NULL.
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\param flags - option flags
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\return upon successful completion, the function shall open the spi channel and return
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a non-negative integer representing the file descriptor.
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Otherwise, -1 shall be returned
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\sa spi_Close , spi_Read , spi_Write
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\note
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\warning
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*/
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Fd_t spi_Open(char *ifName, unsigned long flags);
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/*!
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\brief closes an opened spi communication port
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\param fd - file descriptor of an opened SPI channel
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\return upon successful completion, the function shall return 0.
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Otherwise, -1 shall be returned
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\sa spi_Open
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\note
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\warning
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*/
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int spi_Close(Fd_t fd);
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/*!
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\brief attempts to read up to len bytes from SPI channel into a buffer starting at pBuff.
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\param fd - file descriptor of an opened SPI channel
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\param pBuff - points to first location to start writing the data
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\param len - number of bytes to read from the SPI channel
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\return upon successful completion, the function shall return 0.
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Otherwise, -1 shall be returned
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\sa spi_Open , spi_Write
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\note
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\warning
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*/
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int spi_Read(Fd_t fd, unsigned char *pBuff, int len);
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/*!
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\brief attempts to write up to len bytes to the SPI channel
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\param fd - file descriptor of an opened SPI channel
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\param pBuff - points to first location to start getting the data from
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\param len - number of bytes to write to the SPI channel
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\return upon successful completion, the function shall return 0.
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Otherwise, -1 shall be returned
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\sa spi_Open , spi_Read
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\note This function could be implemented as zero copy and return only upon successful completion
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of writing the whole buffer, but in cases that memory allocation is not too tight, the
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function could copy the data to internal buffer, return back and complete the write in
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parallel to other activities as long as the other SPI activities would be blocked untill
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the entire buffer write would be completed
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\warning
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*/
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int spi_Write(Fd_t fd, unsigned char *pBuff, int len);
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/*!
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\brief register an interrupt handler for the host IRQ
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\param InterruptHdl - pointer to interrupt handler function
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\param pValue - pointer to a memory strcuture that is passed to the interrupt handler.
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\return upon successful registration, the function shall return 0.
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Otherwise, -1 shall be returned
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\sa
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\note If there is already registered interrupt handler, the function should overwrite the old handler
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with the new one
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\warning
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*/
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int NwpRegisterInterruptHandler(P_EVENT_HANDLER InterruptHdl , void* pValue);
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/*!
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\brief Masks host IRQ
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\sa NwpUnMaskInterrupt
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\warning
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*/
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void NwpMaskInterrupt();
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/*!
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\brief Unmasks host IRQ
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\sa NwpMaskInterrupt
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\warning
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*/
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void NwpUnMaskInterrupt();
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void NwpPowerOnPreamble(void);
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void NwpPowerOff(void);
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void NwpPowerOn(void);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif
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