view src/cs/drivers/drv_app/r2d/uwire.h @ 629:3231dd9b38c1

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 b8fc86826624
children
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/**
                                                                          
	@file:	uwire.h	
	
	@author Davide Carpegna                              
                                                                          
    @version	1.0	

    Purpose:	Driver for the uwire HD module       
	
*/

/*
																			
 	Date       	Modification												
  ------------------------------------									
    09/22/2000	Create		
    10/18/2001  Updated for R2D by Christophe Favergeon
																											    
																			
 (C) Copyright 2000 by Texas Instruments Incorporated, All Rights Reserved
*/

#ifndef _UWIRE_H_
#define _UWIRE_H_

#define MEM_UWIRE       0xFFFE4000
#define	TDR             (MEM_UWIRE)
#define	RDR             (MEM_UWIRE)
#define	CSR             (MEM_UWIRE+0x02)
#define	SR1             (MEM_UWIRE+0x04)
#define	SR2             (MEM_UWIRE+0x06)
#define	SR3             (MEM_UWIRE+0x08)

#define INDEX_CS1       (1 << 10)
#define NB_BITS_WR_8    (1 << 8 )
#define INDEX_CS0       0
#define NB_BITS_WR_9    (9 << 5)
#define CS_CMD          (1 << 12)
#define START           (1 << 13)
#define CS1_EDGE_RD     (1 << 6)
#define CS1_FRQ_FINT_4  (1 << 9)
#define CS0_FRQ_FINT_2  0
#define CS0_FRQ_FINT_4  (1 << 3)
#define SR3_CLK_EN      1

#define CSRB            ( 1<<14 )

#define IO_SEL0         0xFFFEF008
#define IO_SEL          0xFFFEF00A

#define GPIO_INOUT      0xFFFE4804
#define GPIO_OUT        0xFFFE4802 
#define CNTL_RST        0xFFFFFD04

#ifdef _WINDOWS
   #ifdef __cplusplus
      extern "C"
      {
   #endif
#endif

// prototypes of uwire functions for lcd
BOOLEAN lcd_polling(void);
void lcd_transmit_cmd(UINT8 cmd);
void uwire_init_lcd(void);

// Defined only for board
void lcd_transmit_data(UINT8 data);

// Defined only for PC
void lcd_refresh(void);
void lcd_set_pos(unsigned char x,unsigned char y);
void* lcd_get_dc(void);

#ifdef _WINDOWS
   #ifdef __cplusplus
      }
   #endif
#endif

#endif /*_UWIRE_H_*/