+++ /dev/null
-/*-------------------------------------------------------------------------
- CPU depending Declarations
-
- Written By - Dipl.-Ing. (FH) Michael Schmitt
- Bug-Fix Oct 15 1999
- mschmitt@mainz-online.de
- michael.schmitt@t-online.de
-
- Thanks to Josef Wolf <jw@raven.inka.de> for the serial io functions
- via interrupts
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- In other words, you are welcome to use, share and improve this program.
- You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
--------------------------------------------------------------------------*/
-
-// This file contains CPU depending utilities
-// some of these parts are taken from sources made public by the sdcc project
-// special thanks to sandeep for his great work and all other
-
-// First some usseful definitions
-#define FALSE 0
-#define TRUE !FALSE
-
-// here is a definition of a single nop command as it has to be declared under keil-C and sdcc
-#ifdef SDCC
- #define NOP _asm nop _endasm
-#else
- // This is for Keil-C
- #define NOP _nop_()
-#endif
-
-// ===========================================================================================
-// Here are some CPU depending definitions that have to checked
-
-#ifndef EXTENDED_CPU_IDLE
-void CpuIdle( void )
-{
- PCON |= 0x01; /* Setting IDL-Bit of Register PCON */
-}
-#else
- #define CpuIdle() PCON |= 0x01; PCON |= 0x20 // start the idle mode...
-#endif
-
-void WatchDog( void )
-{
- // no watchdog yet
-}
-
-
-// ===========================================================================================
-// Serial IO using the internal UART in interrupt mode
-#ifdef SERIAL_VIA_INTERRUPT
-
-#define SERIAL_IS_DEFINED
-
- // Transmit Buffersize
-#ifndef SERIAL_VIA_INTERRUPT_XBUFLEN
- #error "SERIAL_VIA_INTERRUPT_XBUFLEN not defined using default"
- #define SERIAL_VIA_INTERRUPT_XBUFLEN 8
-#endif
-
- // Receive Buffer Size
-#ifndef SERIAL_VIA_INTERRUPT_RBUFLEN
- #error "SERIAL_VIA_INTERRUPT_RBUFLEN not defined using default"
- #define SERIAL_VIA_INTERRUPT_RBUFLEN 8
-#endif
-
-// for interrupt mode we implement a ring buffer
-volatile xdata static unsigned char SERIAL_VIA_INTERRUPT_RBUF[SERIAL_VIA_INTERRUPT_RBUFLEN];
-volatile xdata static unsigned char SERIAL_VIA_INTERRUPT_XBUF[SERIAL_VIA_INTERRUPT_XBUFLEN];
-volatile static unsigned char SERIAL_VIA_INTERRUPT_RCNT;
-volatile static unsigned char SERIAL_VIA_INTERRUPT_XCNT;
-volatile static unsigned char SERIAL_VIA_INTERRUPT_RPOS;
-volatile static unsigned char SERIAL_VIA_INTERRUPT_XPOS;
-volatile static unsigned char SERIAL_VIA_INTERRUPT_BUSY;
-
-#endif // SERIAL_VIA_INTERRUPT
-
-#ifdef SERIAL_VIA_POLLING
- #define SERIAL_IS_DEFINED
-#endif // SERIAL_VIA_POLLING
-
-#ifdef SERIAL_IS_DEFINED
- // Here are some definitions about the desired serial interface
- #ifndef CPUCLKHZ
- #error "CPUCLKHZ is not defined !"
- #endif
- #ifndef BAUDRATE
- #error "BAUDRATE is not defined !"
- #endif
-
- #define TIMER1MODE2RELOADVALUE (256-(1*CPUCLKHZ/32/12/BAUDRATE))
-#endif // SERIAL_IS_DEFINED
-
-#ifdef SERIAL_VIA_INTERRUPT
-void ser_handler (void) interrupt 4
-{
- if (RI) {
- RI = 0;
- /* don't overwrite chars already in buffer */
- if (SERIAL_VIA_INTERRUPT_RCNT < SERIAL_VIA_INTERRUPT_RBUFLEN)
- SERIAL_VIA_INTERRUPT_RBUF [(SERIAL_VIA_INTERRUPT_RPOS+SERIAL_VIA_INTERRUPT_RCNT++) % SERIAL_VIA_INTERRUPT_RBUFLEN] = SBUF;
- }
- if (TI) {
- TI = 0;
- if (SERIAL_VIA_INTERRUPT_BUSY = SERIAL_VIA_INTERRUPT_XCNT) { /* Assignment, _not_ comparison! */
- SERIAL_VIA_INTERRUPT_XCNT--;
- SBUF = SERIAL_VIA_INTERRUPT_XBUF [SERIAL_VIA_INTERRUPT_XPOS++];
- if (SERIAL_VIA_INTERRUPT_XPOS >= SERIAL_VIA_INTERRUPT_XBUFLEN)
- SERIAL_VIA_INTERRUPT_XPOS = 0;
- }
- }
-}
-
-void putchar( char Byte )
-{
- while (SERIAL_VIA_INTERRUPT_XCNT >= SERIAL_VIA_INTERRUPT_XBUFLEN) /* wait for room in buffer */
- {
- WatchDog();
- CpuIdle();
- }
- ES = 0;
- if (SERIAL_VIA_INTERRUPT_BUSY) {
- SERIAL_VIA_INTERRUPT_XBUF[(SERIAL_VIA_INTERRUPT_XPOS+SERIAL_VIA_INTERRUPT_XCNT++) % SERIAL_VIA_INTERRUPT_XBUFLEN] = Byte;
- } else {
- SBUF = Byte;
- SERIAL_VIA_INTERRUPT_BUSY = 1;
- }
- ES = 1;
-}
-
-unsigned char getchar( void )
-{
- unsigned char c;
- while (!SERIAL_VIA_INTERRUPT_RCNT) /* wait for character */
- {
- WatchDog();
- CpuIdle();
- }
- ES = 0;
- SERIAL_VIA_INTERRUPT_RCNT--;
- c = SERIAL_VIA_INTERRUPT_RBUF [SERIAL_VIA_INTERRUPT_RPOS++];
- if (SERIAL_VIA_INTERRUPT_RPOS >= SERIAL_VIA_INTERRUPT_RBUFLEN)
- SERIAL_VIA_INTERRUPT_RPOS = 0;
- ES = 1;
- return (c);
-}
-#endif
-
-// ===========================================================================================
-// Now the Internal UART Handling if Polling Method is used
-#ifdef SERIAL_VIA_POLLING
-void putchar( char Byte )
-{
- while( !TI ) /* wait for TI==1 */
- {
- WatchDog();
- CpuIdle();
- }
- SBUF = Byte;
- TI = 0;
-}
-
-unsigned char getchar( void )
-{
- while( !RI ) /* wait for RI==1 */
- {
- WatchDog();
- CpuIdle();
- }
- RI=0;
- return (SBUF);
-}
-#endif
-
-// ===========================================================================================
-// System Timer
-#ifdef USE_SYSTEM_TIMER
-
-volatile unsigned long SystemTicks1msec;
-
-// Here are the definitions of the 1kHz Timer 0
-// used for delay( xx_msec )
-#ifndef CPUCLKHZ
-#error "CPUCLKHZ is not defined !"
-#endif
-
-#define TIMER0INTSPERSECOND 1000
-#define TIMER0MODE1RELOADVALUE (-((CPUCLKHZ/TIMER0INTSPERSECOND)/12))
-
-void delayMsec( unsigned long delayTime )
-{
- delayTime += SystemTicks1msec;
- while( SystemTicks1msec < delayTime )
- {
- CpuIdle();
- }
-}
-
-void timer0_isr (void) interrupt 1
-{
- /* Interruptrate will be slightly slower than wanted */
- /* because TL0 is not 0 here, not bug-fix yet */
- TL0 = (TIMER0MODE1RELOADVALUE & 0x00FF);
- TH0 = (TIMER0MODE1RELOADVALUE >> 8);
- SystemTicks1msec++;
-}
-#endif // USE_SYSTEM_TIMER
-
-// ===========================================================================================
-// Global Hardware Init
-void init_hardware( void )
-{
-#ifdef USE_SYSTEM_TIMER
- SystemTicks1msec = 0x0;
-#endif // USE_SYSTEM_TIMER
-
- EA = 0; /* Disable ALL Ints */
- ES = 0; /* Disable Serial Int */
- ET1 = 0; /* Disable Timer 1 Int */
- EX1 = 0; /* Disable External Interrupt 1 */
- ET0 = 0; /* Disable Timer 0 Int */
- EX0 = 0; /* Disable External Interrupt 0 */
-
- TR1 = 0; /* Stop Timer 1 */
- TR0 = 0; /* Stop Timer 0 */
-
-#ifdef SERIAL_VIA_INTERRUPT
- SERIAL_VIA_INTERRUPT_RCNT = SERIAL_VIA_INTERRUPT_XCNT = SERIAL_VIA_INTERRUPT_RPOS = SERIAL_VIA_INTERRUPT_XPOS = 0; /* init buffers */
- SERIAL_VIA_INTERRUPT_BUSY = 0;
-#endif
-
-#ifdef SERIAL_IS_DEFINED
- /* Init UART 9600Baud 8-Bit using Timer 1 in Mode 2*/
- /* Set Reload Values for CPU-Clk and BaudRate */
- TH1 = TIMER1MODE2RELOADVALUE;
- TL1 = TIMER1MODE2RELOADVALUE;
- TMOD &= 0x0f; /* First we set Timer 1 */
- TMOD |= 0x20; /* Setting Timer 1 as GATE=0 TIMER and MODE 2 8-bit auto reload */
- TR1 = 1; /* Enabling Timer 1 */
-#endif
-
-#ifdef USE_SYSTEM_TIMER
- /* Init Timer 0 as Software Interrupt for 1mSec Timer */
- TL0 = (TIMER0MODE1RELOADVALUE & 0x00FF);
- TH0 = (TIMER0MODE1RELOADVALUE >> 8);
- TMOD &= 0xf0; /* Now Timer 0 */
- TMOD |= 0x01; /* Setting Timer 0 as GATE=0 TIMER and MODE 1 16-bit Timer mode */
- TR0 = 1; /* Enabling Timer 0 */
-#endif
-
-#ifdef SERIAL_IS_DEFINED
- SCON = 0x40; /* Init Serial Port as 8-Bit UART with variable Baudrate */
- SCON |= 0x10; /* Enabling Serial reception */
- SCON |= 0x02; /* Setting TI-Bit */
-#endif
-
-#ifdef USE_SYSTEM_TIMER
- TR0 = 1; /* Start Timer 0 */
- ET0 = 1; /* Enable Timer 0 Interrupt */
-#endif
-
-#ifdef SERIAL_VIA_INTERRUPT
- ES = 1; /* Enable Serial Interrupt */
-#endif
- EA = 1; /* Enable all Enabled Interrupts */
-
-}
+++ /dev/null
-/*-------------------------------------------------------------------------
- CPU depending Declarations Header file
-
- Written By - Dipl.-Ing. (FH) Michael Schmitt
- Bug-Fix Oct 15 1999
- mschmitt@mainz-online.de
- michael.schmitt@t-online.de
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- In other words, you are welcome to use, share and improve this program.
- You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
--------------------------------------------------------------------------*/
-
-void CpuIdle( void );
-void WatchDog( void );
-void init_hardware( void );
-void delayMsec( unsigned long delayTime );
-void timer0_isr (void) interrupt 1;
-void ser_handler (void) interrupt 4;
-void putchar( char Byte );
-unsigned char getchar( void );
+++ /dev/null
-/*-------------------------------------------------------------------------
- CPU Startup Code
-
- Written By - Dipl.-Ing. (FH) Michael Schmitt
- Bug-Fix Oct 15 1999
- mschmitt@mainz-online.de
- michael.schmitt@t-online.de
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- In other words, you are welcome to use, share and improve this program.
- You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
--------------------------------------------------------------------------*/
-
-/* here are some definition about the CPU */
-#include <at89c55.h>
-#define CPUCLKHZ 11059200
-//#define CPUCLKHZ 24000000
-#define BAUDRATE 9600
-
-// For serial com. we use the internal UART and data exchange is done by interrupt and not via polling
-#define SERIAL_VIA_INTERRUPT
-#define SERIAL_VIA_INTERRUPT_XBUFLEN 64
-#define SERIAL_VIA_INTERRUPT_RBUFLEN 4
-//#define SERIAL_VIA_POLLING
-
-// include a 1msec timer
-#define USE_SYSTEM_TIMER
-
-// all 8051-CPU utils can be found here
-#include "cpu_tools.h"
-#include "cpu_tools.c"
-
-// that is needed for printf, will be removed after the debug version
-
-// if the following files are copied to the local folder, enable the next two lines and comment out
-// the two lines above
-//#include "vprintf.c"
-//#include "printf_large.c"
-
-//#include "harddisk.c"
-
-void main()
-{
- // This has to be done first
- init_hardware();
-
-
- printf( "\n\r<<< RESET >>>\r\n" );
-
- printf( "\n\rStartTime : " );
- printf( "%ld \n\r",SystemTicks1msec );
-
- while( 1 )
- {
- printf( "\r%ld ", SystemTicks1msec);
- delayMsec( 999 );
- }
-}
projects / fw / sdcc / commitdiff