esos_spi.c

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/*
 * "Copyright (c) 2019 J. W. Bruce ("AUTHOR(S)")"
 * All rights reserved.
 * (J. W. Bruce, jwbruce_AT_tntech.edu, Tennessee Tech University)
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice, the following
 * two paragraphs and the authors appear in all copies of this software.
 *
 * IN NO EVENT SHALL THE "AUTHORS" BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE "AUTHORS"
 * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE "AUTHORS" SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE "AUTHORS" HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
 *
 * Please maintain this header in its entirety when copying/modifying
 * these files.
 *
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 */
 
 
// Documentation for this file. If the \file tag isn't present,
// this file won't be documented.
/*** I N C L U D E S *************************************************/
#include "esos.h"
#include "esos_spi.h"
 
/*** G L O B A L S *************************************************/
struct stTask   __stChildTaskSPI;       // req'd child task for SPI hw functions
uint16_t           __esos_spi_u16s[2];  // storage for the child task arguments
 
/*** T H E   C O D E *************************************************/
 
/*********************************************************
 * Public functions intended to be called by other files *
 *********************************************************/
 
void __esos_spi_config(uint32_t u32_spibps) {
  // setup any ESOS structures needed for SPI here
  __esos_SetSystemFlag(__ESOS_SYS_SPI_IS_BUSY); 
  
  // call the hardware provided function to setup the HW itself
  __esos_spi_hw_config( u32_spibps);
  
  // do any last-minute I2C configuration for ESOS
  __esos_ClearSystemFlag(__ESOS_SYS_SPI_IS_BUSY); 
}