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view src/g23m-aci/uart/uart_kerf.h @ 629:3231dd9b38c1

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armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively, and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code for C-Sample and earlier turns them into GPIOs configured as outputs also driving 1 - so far, so good - but TI's code for BOARD 41 (which covers D-Sample, Leonardo and all real world Calypso devices derived from the latter) switches them from MCUEN to GPIOs, but then leaves them as inputs. Given that the hardware powerup state of these two pins is outputs driving 1, every Calypso board design MUST be compatible with such driving; typically these GPIO signals will be either unused and unconnected or connected as outputs driving some peripheral. Turning these pins into GPIO inputs will result in floating inputs on every reasonably-wired board, thus I am convinced that this configuration is nothing but a bug on the part of whoever wrote this code at TI. This floating input bug had already been fixed earlier for GTA modem and FCDEV3B targets; the present change makes the fix unconditional for all "classic" targets. The newly affected targets are D-Sample, Leonardo, Tango and GTM900.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 02 Jan 2020 05:38:26 +0000
parents 53929b40109c
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   :  
+----------------------------------------------------------------------------- 
|  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 uart_kerf.c 
+----------------------------------------------------------------------------- 
*/ 

#ifndef UART_KERF_H
#define UART_KERF_H


EXTERN void ker_setupUart (void);

EXTERN void ker_init (void);

EXTERN void ker_analyze_frame_info_command (ULONG* forward, T_desc2* frame);

EXTERN void ker_analyze_frame_info_response (ULONG* forward, T_desc2* frame);

EXTERN void ker_mux_dlc_release (UBYTE dlc_instance);

EXTERN void ker_mux_close_down (void);

EXTERN void ker_mux_send_frame (T_desc2* frame);

EXTERN void ker_mux_send_command_frame (UBYTE dlc_instance, T_desc2* frame);

EXTERN void ker_mux_send_line_states(UBYTE dlc_instance);

EXTERN void ker_mux_send_close_down(void);

EXTERN void ker_send_disc_frame (UBYTE dlci);

EXTERN void ker_receive_sabm_frame(ULONG* forward, T_desc2* frame);

EXTERN void ker_receive_ua_frame(ULONG* forward, T_desc2* frame);

EXTERN void ker_receive_dm_frame(ULONG* forward, T_desc2* frame);

EXTERN void ker_receive_disc_frame(ULONG* forward, T_desc2* frame);

EXTERN void ker_receive_uih_control_frame(ULONG* forward, T_desc2* frame);

EXTERN void ker_receive_uih_data_frame(ULONG* forward, T_desc2* frame);

#endif /* !UART_KERF_H */