FreeCalypso > hg > fc-tourmaline
view src/gpf/tst/drv/stack1_Serial.h @ 268:f2e52cab0a73
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 | 4e78acac3d88 |
| children |
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/*============================================================================= * Copyright 1996-2001 Texas Instruments Inc. All rights reserved. */ #ifndef STACK1_SERIAL_HEADER #define STACK1_SERIAL_HEADER //#include "puf_PrimHdr.h" /*============================================================================= * Description: */ //typedef struct{ // Puf_PrimHdr primHdr; //}Stack1_Serial_RxInd; typedef void (*SERIAL_CALLBACK_FUNC)(void); /*=========================================================================== * Description: * Install the Uart interrupt handlers and initialize the Uart. */ int stack1_Serial_PowerUp( SERIAL_CALLBACK_FUNC callback ); /*=========================================================================== * Description: * Copy the data from the Rx buffer into the passed in buffer. If there * aren't dataLen bytes in the Rx buffer all the bytes currently in the rx * buffer are returned. */ unsigned long stack1_Serial_receiveData( unsigned char *dataPtr, unsigned long dataLen ); /*=========================================================================== * Description: * Copy the data to be transmitted into the Tx Buffer and enable the Uart Tx * interrupt. If the Tx buffer is full, discard the data and return a buffer * full indication. */ int stack1_Serial_sendData( unsigned char *dataPtr, unsigned long dataLen ); #endif