FreeCalypso > hg > fc-magnetite
view src/cs/drivers/drv_core/timer/timer2.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 | 945cf7f506b2 |
| children |
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/******************************************************************************* TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION Property of Texas Instruments -- For Unrestricted Internal Use Only Unauthorized reproduction and/or distribution is strictly prohibited. This product is protected under copyright law and trade secret law as an unpublished work. Created 1987, (C) Copyright 1997 Texas Instruments. All rights reserved. Filename : timer2.h Description :TIMER1 Project : drivers Author : pmonteil@tif.ti.com Patrice Monteil. Version number : 1.4 Date and time : 02/15/01 15:47:05 Previous delta : 02/15/01 15:47:05 SCCS file : /db/gsm_asp/db_ht96/dsp_0/gsw/rel_0/mcu_l1/release_gprs/mod/emu_p/EMU_P_FRED/drivers1/common/SCCS/s.timer2.h Sccs Id (SID) : '@(#) timer2.h 1.4 02/15/01 15:47:05 ' *****************************************************************************/ #include "l1sw.cfg" #if (OP_L1_STANDALONE == 0) #include "main/sys_types.h" #else #include "sys_types.h" #endif /**** DIONE TIMERs configuration register ****/ #define D_TIMER_ADDR 0xfffe6800 #define D_TIMER_CNTL_MASK 0x001f #define CNTL_D_TIMER_OFFSET 0x0000 #define LOAD_D_TIMER_OFFSET 0x0002 #define READ_D_TIMER_OFFSET 0x0004 #define D_TIMER_CNTL (D_TIMER_ADDR+CNTL_D_TIMER_OFFSET) #define D_TIMER_LOAD (D_TIMER_ADDR+LOAD_D_TIMER_OFFSET) #define D_TIMER_READ (D_TIMER_ADDR+READ_D_TIMER_OFFSET) #define D_TIMER_ST 0x0001 /* bit 0 */ #define D_TIMER_AR 0x0002 /* bit 1 */ #define D_TIMER_PTV 0x001c /* bits 4:2 */ #define D_TIMER_CLK_EN 0x0020 /* bit 5 */ #define D_TIMER_RUN 0x0021 /* bit 5 ,0 */ #define LOAD_TIM 0xffff /* bits 15:0 */ /* ----- Prototypes ----- */ SYS_UWORD16 Dtimer2_Get_cntlreg(void); void Dtimer2_AR(SYS_UWORD16 Ar); void Dtimer2_PTV(SYS_UWORD16 Ptv); void Dtimer2_Clken(SYS_UWORD16 En); void Dtimer2_Start (SYS_UWORD16 startStop); void Dtimer2_Init_cntl (SYS_UWORD16 St, SYS_UWORD16 Reload, SYS_UWORD16 clockScale, SYS_UWORD16 clkon); void Dtimer2_WriteValue (SYS_UWORD16 value); SYS_UWORD16 Dtimer2_ReadValue (void);