sergiotarxz/nuttx
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Fix more overflow/truncation problems in timer setups

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1537 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-02-28 18:50:44 +00:00
parent 01a50c427d
commit 3b78e0a8f3
8 changed files with 20 additions and 26 deletions
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5
ChangeLog
View File

@ -631,8 +631,9 @@
wrong by 64 bytes (Kevin Franzen).
* ez80Acclaim!: Corrected some stack handling errors during interrupt handling
context save and restore (Kevin Franzen).
* ez80Acclaim!:Corrected vector intialization logic (Kevin Franzen).
* ez80Acclaim!: Corrected overflow problem in calculation of baud rate divisor
* ez80Acclaim!: Corrected vector intialization logic (Kevin Franzen).
* ez80Acclaim!: Corrected overflow problem in the calculation of UART baud rate
divisor, the system timer divisor, and the EMAC poll timer.
* ez80Acclaim!: Fixed GPIO pin configuration get serial output
* ez80Acclaim!: Correct stack overflow in ostest example configuration

5
Documentation/NuttX.html
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@ -1352,8 +1352,9 @@ nuttx-0.4.2 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
wrong by 64 bytes (Kevin Franzen).
* ez80Acclaim!: Corrected some stack handling errors during interrupt handling
context save and restore (Kevin Franzen).
* ez80Acclaim!:Corrected vector intialization logic (Kevin Franzen).
* ez80Acclaim!: Corrected overflow problem in calculation of baud rate divisor
* ez80Acclaim!: Corrected vector intialization logic (Kevin Franzen).
* ez80Acclaim!: Corrected overflow problem in the calculation of UART baud rate
divisor, the system timer divisor, and the EMAC poll timer.
* ez80Acclaim!: Fixed GPIO pin configuration get serial output
* ez80Acclaim!: Correct stack overflow in ostest example configuration

2
Makefile
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@ -251,7 +251,7 @@ subdir_clean:
@$(MAKE) -C mm -f Makefile.test TOPDIR="$(TOPDIR)" clean
clean: subdir_clean
@rm -f $(BIN) $(BIN).* mm_test *.map *~
@rm -f $(BIN) nuttx.* mm_test *.map *~
subdir_distclean:
@for dir in $(CLEANDIRS) ; do \

9
arch/z80/src/ez80/ez80_emac.c
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@ -117,11 +117,6 @@
# error "Unsupported CONFIG_EZ80_PKTBUFSIZE value"
#endif
/* The system clock frequency is defined in the linkcmd file */
extern unsigned long SYS_CLK_FREQ;
#define _DEFCLK ((unsigned long)&SYS_CLK_FREQ)
/* Select the fastest MDC clock that does not exceed 25MHz. The MDC
* clock derives from the SCLK divided by 4, 6, 8, 10, 14, 20, or 28.
*/
@ -152,10 +147,10 @@ extern unsigned long SYS_CLK_FREQ;
#define EMAC_RETRY 0x0f /* CFG3: Maximum number of retry default value */
/* Poll timer setting. The transmit poll timer is set in increments of
* SYSCLCK / 256
* SYSCLCK / 256. NOTE: The system clock frequency is defined in the board.h file.
*/
#define EMAC_PTMR ((CONFIG_EZ80_TXPOLLTIMERMS * (_DEFCLK / 1000) >> 8))
#define EMAC_PTMR ((CONFIG_EZ80_TXPOLLTIMERMS * (ez80_systemclock / 1000) >> 8))
/* EMAC system interrupts :
*

8
arch/z80/src/ez80/ez80_lowuart.c
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@ -55,8 +55,6 @@
* Private Definitions
****************************************************************************/
/* The system clock frequency is defined in the board.h file */
/* Is there any serial support? This might be the case if the board does
* not have serial ports but supports stdout through, say, an LCD.
*/
@ -148,11 +146,13 @@ static void ez80_setbaud(void)
/* The resulting BAUD and depends on the system clock frequency and the
* BRG divisor as follows:
*
* BAUD = SYSTEM_CLOCK_FREQUENCY / (16 * BRG_Divisor)
* BAUD = SYSTEM_CLOCK_FREQUENCY / (16 * BRG_Divisor)
*
* Or
*
* BRG_Divisor = SYSTEM_CLOCK_FREQUENCY / 16 / BAUD
* BRG_Divisor = SYSTEM_CLOCK_FREQUENCY / 16 / BAUD
*
* NOTE: The system clock frequency value is defined in the board.h file
*/
brg_divisor = (ez80_systemclock + (CONFIG_UART_BAUD << 3)) / (CONFIG_UART_BAUD << 4);

11
arch/z80/src/ez80/ez80_timerisr.c
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@ -1,7 +1,7 @@
/***************************************************************************
* arch/z80/src/ez80/ez80_timerisr.c
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -53,11 +53,6 @@
* Definitions
***************************************************************************/
/* The system clock frequency is defined in the linkcmd file */
extern unsigned long SYS_CLK_FREQ;
#define _DEFCLK ((unsigned long)&SYS_CLK_FREQ)
/***************************************************************************
* Private Types
***************************************************************************/
@ -143,9 +138,11 @@ void up_timerinit(void)
*
* For a system timer of 50,000,000 that would result in a reload value of
* 31,250
*
* NOTE: The system clock frequency value is defined in the board.h file
*/
reload = (uint16)(_DEFCLK / 1600);
reload = (uint16)(ez80_systemclock / 1600);
outp(EZ80_TMR0_RRH, (ubyte)(reload >> 8));
outp(EZ80_TMR0_RRL, (ubyte)(reload));

4
arch/z80/src/ez80/ez80f91.h
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@ -2,7 +2,7 @@
* arch/z80/src/ez80/ez80f91.h
* arch/z80/src/chip/ez80f91.h
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -206,7 +206,7 @@
# define EZ80_TMRCLKDIV_16 0x08 /* 01: 16 */
# define EZ80_TMRCLKDIV_64 0x10 /* 10: 64 */
# define EZ80_TMRCLKDIV_256 0x18 /* 11: 256 */
#define EZ80_TMRCTL_TIMCONT 0x04 /* Bit 2: Continusous mode */
#define EZ80_TMRCTL_TIMCONT 0x04 /* Bit 2: Continuous mode */
#define EZ80_TMRCTL_RLD 0x02 /* Bit 1: Force reload */
#define EZ80_TMRCTL_TIMEN 0x01 /* Bit 0: Programmable reload timer enabled */

2
configs/ez80f910200zco/ostest/defconfig
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@ -231,7 +231,7 @@ CONFIG_DEV_LOWCONSOLE=y
CONFIG_DISABLE_CLOCK=n
CONFIG_DISABLE_POSIX_TIMERS=n
CONFIG_DISABLE_PTHREAD=n
CONFIG_DISABLE_SIGNALS=n
CONFIG_DISABLE_SIGNALS=y
CONFIG_DISABLE_MQUEUE=n
CONFIG_DISABLE_MOUNTPOINT=n
CONFIG_DISABLE_ENVIRON=n