diff options
Diffstat (limited to 'nuttx/arch/pjrc-8051/src/up_irqtest.c')
| -rw-r--r-- | nuttx/arch/pjrc-8051/src/up_irqtest.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/nuttx/arch/pjrc-8051/src/up_irqtest.c b/nuttx/arch/pjrc-8051/src/up_irqtest.c new file mode 100644 index 000000000..944e70594 --- /dev/null +++ b/nuttx/arch/pjrc-8051/src/up_irqtest.c @@ -0,0 +1,269 @@ +/************************************************************ + * up_putc.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name Gregory Nutt nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************/ + +/************************************************************ + * Included Files + ************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/arch.h> +#include <8052.h> +#include "up_internal.h" + +/************************************************************ + * Definitions + ************************************************************/ + +#define up_extint0 ((vector_t)PM2_VECTOR_EXTINT0) +#define up_timer0 ((vector_t)PM2_VECTOR_TIMER0) +#define up_extint1 ((vector_t)PM2_VECTOR_EXTINT1) +#define up_timer1 ((vector_t)PM2_VECTOR_TIMER1) +#define up_uart ((vector_t)PM2_VECTOR_UART) +#define up_timer2 ((vector_t)PM2_VECTOR_TIMER2) + +/************************************************************ + * Private Types + ************************************************************/ + +typedef void (*vector_t)(void); + +/************************************************************ + * Public Variables + ************************************************************/ + +boolean g_irqtest; +ubyte g_irqtos; +ubyte g_irqregs[REGS_SIZE]; +int g_nirqs; +FAR struct xcptcontext *g_irqcontext; + +/************************************************************ + * Private Functions + ************************************************************/ + +/************************************************************ + * Name: utility functions + ************************************************************/ + +static void _up_putc(ubyte ch) __naked +{ + ch; /* To avoid unreferenced argument warning */ + _asm + mov a, dpl + ljmp PM2_ENTRY_COUT + _endasm; +} + +void _up_puthex(ubyte hex) __naked +{ + hex; /* To avoid unreferenced argument warning */ + _asm + mov a, dpl + ljmp PM2_ENTRY_PHEX + _endasm; +} + +void _up_puthex16(int hex) __naked +{ + hex; /* To avoid unreferenced argument warning */ + _asm + ljmp PM2_ENTRY_PHEX16 + _endasm; +} + +void _up_putnl(void) __naked +{ + _asm + ljmp PM2_ENTRY_NEWLINE + _endasm; +} + +void _up_puts(__code char *ptr) +{ + for (; *ptr; ptr++) + { + _up_putc(*ptr); + } +} + +void _up_delay(ubyte milliseconds) __naked +{ + _asm + mov r0, dpl +00001$: mov r1, #230 +00002$: nop + nop + nop + nop + nop + nop + djnz r1, 00002$ + djnz r0, 00001$ + ret + _endasm; +} + +/************************************************************ + * Public Functions + ************************************************************/ + +/************************************************************ + * Name: os_start + * + * Description: + * "Fake" OS entry point. + * + ************************************************************/ + +void os_start(void) +{ + int i; + + /* Disable all interrupts */ + + IE = 0; + + /* Then verify all of the interrupt */ + + g_irqtest = FALSE; + + up_extint0(); + up_timer0(); +#ifndef CONFIG_8052_TIMER2 + up_timer0(); +#endif + up_extint1(); + up_timer1(); + up_uart(); + up_timer2(); + + /* Now a real interrupt ... */ + + /* Configure timer 0 */ + + TR0 = 0; /* Make sure timer 0 is stopped */ + TF0 = 0; /* Clear the overflow flag */ + TMOD &= 0xF0; /* Set to mode 0 (without changing timer1) */ + TL0 = 0; /* Clear timer 0 value */ + TH0 = 0; + TR0 = 1; /* Start the timer */ + + /* Start timer interrupts */ + + g_irqtest = TRUE; + g_nirqs = 0; + IE = 0x82; /* Enable interrupts */ + + /* Wait a about 500 MS */ + + _up_delay(500); + + /* Disable the timer */ + + TR0 = 0; /* Stop timer 0 */ + IE = 0; /* Disable interrupts */ + + _up_puts("IRQs in 500 MS="); + _up_puthex16(g_nirqs); + _up_putnl(); + + /* end of test */ + + _up_puts("Test complete"); + _up_putnl(); + for(;;); +} + +/************************************************************ + * Name: irq_dispatch + * + * Description: + * "Fake" IRQ dispatcher + * + ***********************************************************/ + +void irq_dispatch(int irq, FAR void *context) +{ + context; + if (g_irqtest) + { + g_nirqs++; + } + else + { + _up_puts("Dispatch IRQ="); + _up_puthex(irq); + _up_putnl(); + } +} + +/************************************************************ + * Name: up_dumpstack / up_dumpframe + * + * Description: + * "Fake" debug routines if needed. + * + ************************************************************/ + +void up_dumpstack(void) +{ +} + +void up_dumpframe(FAR struct xcptcontext *context) +{ +} + +/************************************************************ + * Name: up_ledinit, up_ledon, up_ledoff + * + * Description: + * "Fake" LED routines if needed + * + ************************************************************/ + +void up_ledinit(void) +{ +} + +void up_ledon(ubyte led) +{ + led; +} + +void up_ledoff(ubyte led) +{ + led; +} |