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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 fa8dc04885d8
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  GPRS (8441)
|  Modul   :  GRR
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  Definitions for service GFP.
+----------------------------------------------------------------------------- 
*/ 

#ifndef GRR_GFPF_H
#define GRR_GFPF_H

EXTERN void gfp_init            ( void                        );

EXTERN BOOL gfp_prcs_ctrl_msg   ( UBYTE* l2_frame,
                                  UBYTE  l2_channel,
                                  UBYTE  relative_position,
                                  ULONG  frame_number         );

EXTERN void gfp_send_ctrl_block ( ULONG fn_i, 
                                  UBYTE tn_i, 
                                  UBYTE rrbp_i, 
                                  UBYTE sp_i, 
                                  UBYTE pctrl_ack_i,
                                  T_MSGBUF * ptr_ctrl_block_i );

EXTERN BOOL gfp_check_tfi       ( T_D_HEADER * ptr_header_i, UBYTE tn   );



#endif /* !GRR_GFPF_H */