FreeCalypso > hg > fc-tourmaline

view src/cs/drivers/drv_app/spi/spi_process.h @ 268:f2e52cab0a73

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 34b7059b9337
children
line wrap: on
line source

/*****************************************************************************/
/*                                                                           */
/*  Name       spi_process.h                                                 */
/*                                                                           */
/*  Function    this file contains the spi_process function prototype,       */
/*		used to handle messages received in the SPI task mailbox.    */
/*                                                                           */
/*  Version    0.1                                                           */
/*                                                                           */
/*  Date       Modification                                                  */
/*  ------------------------------------                                     */
/*                                                                           */
/* Author      Candice Bazanegue                                             */
/*                                                                           */
/* (C) Copyright 2000 by Texas Instruments Incorporated, All Rights Reserved */
/*****************************************************************************/

#ifndef __SPI_PROCESS_H__
#define __SPI_PROCESS_H__


#define SPI_ABB_READ_EVT            1
#define SPI_ABB_WRITE_EVT           2
#define SPI_ABB_CONF_ADC_EVT        3
#define SPI_ABB_READ_ADC_EVT        4
#define ABB_EXT_IRQ_EVT             5

/* Prototypes */

/*******************************************************************************
** Function         spi_process
**
** Description     It is called by the spi task core to handle the access to
**                 the ABB through the SPI in a non-preemptive way.
**
*******************************************************************************/
UINT8 spi_process(T_RV_HDR * msg_ptr);

#endif /* __SPI_PROCESS_H__ */