phys. address 0x00040 points to fifo_list

[z180-stamp.git] / avr / main.c

diff --git a/avr/main.c b/avr/main.c
index 65622ccfe5316d11d8cb5908809218bb397508c6..8bffef991971c64c9b443773016b19f984e2203d 100644 (file)
--- a/avr/main.c
+++ b/avr/main.c
@@ -1,10 +1,11 @@
 /*
+ * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 
 #include "common.h"
-
-#include <util/delay.h>
 #include <avr/interrupt.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -18,8 +19,10 @@
 #include "timer.h"
 #include "cli.h"
 #include "env.h"
-
-#define udelay(n)  _delay_us(n)
+#include "z180-serv.h"
+#include "gpio.h"
+#include "time.h"
+#include "rtc.h"
 
 static uint8_t mcusr;
 
@@ -61,6 +64,16 @@ void print_reset_reason(void)
 
 #endif
 
+ISR(INT5_vect)
+{
+       Stat |= S_MSG_PENDING;
+}
+
+ISR(INT6_vect)
+{
+       Stat |= S_CON_PENDING;
+}
+
 static
 void setup_avr(void)
 {
@@ -77,11 +90,15 @@ void setup_avr(void)
        MCUCR = _BV(JTD);
        MCUCR = _BV(JTD);
 
-       /* disable unused peripherals */
-       PRR0 = _BV(PRTIM0) | _BV(PRADC);
+       /* Disable peripherals. Enable individually in respective init function. */
+       PRR0 = _BV(PRTWI) |
+               _BV(PRTIM2) | _BV(PRTIM0) | _BV(PRTIM1) |
+               _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC);
+
        PRR1 = _BV(PRTIM5) | _BV(PRTIM4) | _BV(PRTIM3) |
                _BV(PRUSART3) | _BV(PRUSART2) | _BV(PRUSART1);
 
+
        /* disable analog comparator */
        ACSR = _BV(ACD);
        /* Ports */
@@ -91,11 +108,18 @@ void setup_avr(void)
        CLKPR = 0;
 
        /* Timer */
-
-       OCR2A = F_CPU / 256 / 1000 - 1; /* Timer2: 1000Hz interval (OC2A) */
-       TCCR2A = (0b10 << WGM20);       /* CTC Mode */
-       TCCR2B = (0b110 << CS20);       /* Prescaler 256 */
-       TIMSK2 = _BV(OCIE2A);           /* Enable TC2.oca interrupt */
+       PRR1 &= ~_BV(PRTIM3);
+       OCR3A = F_CPU / 1000 - 1;       /* Timer3: 1000Hz interval (OC3A) */
+       TCCR3B = (0b01<<WGM32)|(0b001<<CS30); /* CTC Mode, Prescaler 1 */
+       TIMSK3 = _BV(OCIE3A);           /* Enable TC2.oca interrupt */
+
+       /* INT5, INT6: falling edge */
+       EICRB = (EICRB & ~((0b11 << ISC50) | (0b11 << ISC60))) |
+               (0b10 << ISC50) | (0b10 << ISC60);
+       /* Reset pending ints */
+       EIFR |= _BV(INTF5) | _BV(INTF6);
+       /* Enable INT5, and INT6 */
+       EIMSK |= _BV(INT5) | _BV(INT6);
 }
 
 static
@@ -104,6 +128,16 @@ int reset_reason_is_power_on(void)
        return (mcusr & _BV(PORF)) != 0;
 }
 
+static
+void setup_system_time(void)
+{
+       struct tm rtc_time;
+
+       rtc_get(&rtc_time);
+       rtc_time.tm_isdst = 0;
+       set_system_time(mk_gmtime(&rtc_time) );
+}
+
 /*--------------------------------------------------------------------------*/
 
 /* Stored value of bootdelay, used by autoboot_command() */
@@ -131,7 +165,7 @@ static int abortboot(int  bootdelay)
         */
        if (bootdelay >= 0) {
                if (tstc()) {   /* we got a key press   */
-                       (void) my_getchar();  /* consume input  */
+                       (void) my_getchar(1);  /* consume input */
                        my_puts_P(PSTR("\b\b\b 0"));
                        abort = 1;      /* don't auto boot      */
                }
@@ -165,13 +199,13 @@ const char *bootdelay_process(void)
        char *s;
        int bootdelay;
 
-       bootdelay = (int) getenv_ulong(PSTR("bootdelay"), 10, CONFIG_BOOTDELAY);
+       bootdelay = (int) getenv_ulong(PSTR(ENV_BOOTDELAY), 10, CONFIG_BOOTDELAY);
 
 
        debug("### main_loop entered: bootdelay=%d\n\n", bootdelay);
        _delay_ms(20);
 
-       s = getenv(PSTR("bootcmd"));
+       s = getenv(PSTR(ENV_BOOTCMD));
        stored_bootdelay = bootdelay;
        return s;
 }
@@ -200,16 +234,19 @@ void main_loop(void)
 
 int main(void)
 {
+       extern void setup_mmc(void);
 
+       for (int i = 0; i < GPIO_MAX; i++)
+               gpio_config(i, INPUT_PULLUP);
        setup_avr();
+       setup_mmc();
        z80_setup_bus();
-
        env_init();
 
        if (reset_reason_is_power_on())
                _delay_ms(CONFIG_PWRON_DELAY);
 
-       serial_setup(getenv_ulong(PSTR("baudrate"), 10, CONFIG_BAUDRATE));
+       serial_setup(getenv_ulong(PSTR(ENV_BAUDRATE), 10, CONFIG_BAUDRATE));
        sei();
 
 #if DEBUG
@@ -224,9 +261,11 @@ int main(void)
 #else
        i2c_init(CONFIG_SYS_I2C_CLOCK);
 #endif
+       setup_system_time();
 
-       printf_P(PSTR("\n(ATMEGA1281+HD64180)_stamp Tester\n"));
+       printf_P(PSTR("\nATMEGA1281+Z8S180 Stamp Monitor\n\n"));
 
+       setup_z180_serv();
 
        main_loop();
 }