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armio.c: set GPIO2 output high initially On TI-canonical platforms GPIO2 is DCD modem control output. In TI's original code the AI_InitIOConfig() function called from Init_Target() would configure GPIO2 as an output and set the initial output value to low, but then the init code in uartfax.c called from Init_Serial_Flows() would immediately change it to high, corresponding to DCD not asserted. The result is a momentary asserted-state glitch on the DCD output. The present change eliminates this glitch, setting DCD output to not-asserted initially like it should be.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 25 Jun 2020 03:17:43 +0000
parents 219afcfc6250
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 */