#include "common.h"
-#include <util/delay.h>
#include <avr/interrupt.h>
#include <stdlib.h>
#include <stdio.h>
#include "timer.h"
#include "cli.h"
#include "env.h"
-
-#define udelay(n) _delay_us(n)
+#include "z180-serv.h"
+#include "spi.h"
static uint8_t mcusr;
/*--------------------------------------------------------------------------*/
#if DEBUG
-__attribute__ ((naked)) __attribute__ ((section (".init3")))
+__attribute__ ((naked)) __attribute__ ((section (".init3")))
void preset_ram (void)
{
for (uint8_t *p = RAMSTART; p <= (uint8_t *) RAMEND; p++)
#endif
+ISR(INT5_vect)
+{
+ Stat |= S_MSG_PENDING;
+}
+
+ISR(INT6_vect)
+{
+ Stat |= S_CON_PENDING;
+}
+
static
void setup_avr(void)
{
/* TODO: move to init section? */
mcusr = MCUSR;
MCUSR = 0;
-
+
/* WD */
/* CPU */
MCUCR = _BV(JTD);
MCUCR = _BV(JTD);
- /* disable unused periphels */
- PRR0 = _BV(PRTIM2) | _BV(PRTIM0) | _BV(PRADC);
- PRR1 = _BV(PRTIM5) | _BV(PRTIM4) | _BV(PRTIM3) |
+ /* 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 */
CLKPR = 0;
/* Timer */
-
- OCR1A = F_CPU / 8 / 1000 - 1; // Timer1: 1000Hz interval (OC1A)
- TCCR1B = 0b00001010;
- TIMSK1 = _BV(OCIE1A); // Enable TC1.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 */
+
+ /* SPI as master */
+ PRR0 &= ~_BV(PRSPI);
+ SPI_DDR = (SPI_DDR & ~_BV(SPI_MISO))
+ | _BV(SPI_MOSI) | _BV(SPI_SCK) | _BV(SPI_SS);
+ SPI_PORT = (SPI_PORT & ~(_BV(SPI_MOSI) | _BV(SPI_SCK)))
+ | _BV(SPI_SS);
+
+ /* 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
/***************************************************************************
* Watch for 'delay' seconds for autoboot stop.
- * returns: 0 - no key, allow autoboot
+ * returns: 0 - no key, allow autoboot
* 1 - got key, abort
*/
*/
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 */
}
char *s;
int bootdelay;
- bootdelay = (int) getenv_ulong("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("bootcmd");
+ s = getenv(PSTR(ENV_BOOTCMD));
stored_bootdelay = bootdelay;
return s;
}
int main(void)
{
-
setup_avr();
z80_setup_bus();
if (reset_reason_is_power_on())
_delay_ms(CONFIG_PWRON_DELAY);
-
- serial_setup(getenv_ulong("baudrate", 10, CONFIG_BAUDRATE));
+
+ serial_setup(getenv_ulong(PSTR(ENV_BAUDRATE), 10, CONFIG_BAUDRATE));
sei();
#if DEBUG
debug("\n=========================< (RE)START DEBUG >=========================\n");
print_reset_reason();
#endif
-
+
#if DEBUG
- unsigned long i_speed = getenv_ulong("i2c_clock", 10, CONFIG_SYS_I2C_CLOCK);
+ unsigned long i_speed = getenv_ulong(PSTR("i2c_clock"), 10, CONFIG_SYS_I2C_CLOCK);
debug("### Setting I2C clock Frequency to %lu Hz.\n", i_speed);
i2c_init(i_speed);
#else
i2c_init(CONFIG_SYS_I2C_CLOCK);
#endif
- printf_P(PSTR("\n(ATMEGA1281+HD64180)_stamp Tester\n"));
-
+ printf_P(PSTR("\nATMEGA1281+Z8S180 Stamp Monitor\n\n"));
+
+ setup_z180_serv();
+
main_loop();
}