FreeCalypso > hg > fc-magnetite
view src/cs/drivers/drv_core/timer/timer.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 This product is protected under copyright law and trade secret law as an unpublished work.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 : timer.h Description : timer.c header Project : drivers Author : pmonteil@tif.ti.com Patrice Monteil. Version number : 1.3 Date and time : 07/23/98 16:25:53 Previous delta : 07/23/98 16:25:52 SCCS file : /db/gsm_asp/db_ht96/dsp_0/gsw/rel_0/mcu_l1/release1.5/mod/emu/EMU_MCMP/eva3_drivers/source/SCCS/s.timer.h Sccs Id (SID) : '@(#) timer.h 1.3 07/23/98 16:25:53 ' *****************************************************************************/ #include "l1sw.cfg" #if (OP_L1_STANDALONE == 0) #include "main/sys_types.h" #else #include "sys_types.h" #endif #define TIMER_CNTL_REG MEM_TIMER_ADDR /* watchdog Control Timer register */ #define TIMER_ST 0x0080 #define TIMER_AR 0x0100 #define TIMER_PTV 0x0e00 #define TIMER_CNTL_MASK 0x0f80 #define TIMER_MODE_MASK 0x80ff #define TIMER_LOAD_REG (MEM_TIMER_ADDR + 0x02) /* Timer load register */ #define TIMER_READ_REG (MEM_TIMER_ADDR + 0x02) /* Timer read register */ #define TIMER_MODE_REG (MEM_TIMER_ADDR + 0x04) /* Timer mode register */ #define TIMER_WDOG 0x8000 /* watch dog */ #define START_STOP 1 /*to start or stop a timer */ #define AR 0x0002 #define PTV 0x001c #define TIMER_CLK_EN 0x0020 #define TIMER1_CNTL (MEM_TIMER1 + 0x00) #define TIMER1_LOAD_TIM (MEM_TIMER1 + 0x02) #define TIMER1_READ_TIM (MEM_TIMER1 + 0x04) #define TIMER2_CNTL (MEM_TIMER2 + 0x00) #define TIMER2_LOAD_TIM (MEM_TIMER2 + 0x02) #define TIMER2_READ_TIM (MEM_TIMER2 + 0x04) /*-------------------------------------------------------------- * TIMER_START_STOP () *-------------------------------------------------------------- * Parameters : start or stop command * Return : none * Functionality : Start or Stop the timer *--------------------------------------------------------------*/ #define TIMER_START_STOP(startStop) ((startStop) ? ((* (volatile SYS_UWORD16 *) TIMER_CNTL_REG) |= TIMER_ST) : \ ((* (volatile SYS_UWORD16 *) TIMER_CNTL_REG) &= ~TIMER_ST)) /* Prototype of the functions */ void TM_ResetTimer (SYS_UWORD16 timerNum, SYS_UWORD16 countValue, SYS_UWORD16 autoReload, SYS_UWORD16 clockScale); void TM_StopTimer (int timerNum); void TM_StartTimer (int timerNum); SYS_UWORD16 TM_ReadTimer (int timerNum); void TM_DisableWatchdog(void); void TM_EnableWatchdog(void); void TM_ResetWatchdog(SYS_UWORD16 cnt); void TM_EnableTimer (int timerNum); void TM_DisableTimer (int timerNum); SYS_UWORD16 TIMER_Read (unsigned short); void TIMER_WriteValue (SYS_UWORD16); unsigned short TIMER_ReadValue (void);