void global_init()
{
pinPullup(CHRG_P, PU_EN);
// Pin change interrupt on USB power sense pin
#if HW_VERSION == 1
PCICR |= _BV(PCIE0);
PCMSK0 |= _BV(PCINT6);
#elif HW_VERSION == 2
PCICR |= _BV(PCIE0);
PCMSK0 |= _BV(PCINT7);
#else
PCICR |= _BV(PCIE2);
PCMSK2 |= _BV(PCINT19);
#endif
//#warning "remove me!"
// pinPullup(USB_SENSE_P, PU_EN);
// Unused pins
#if HW_VERSION == 3
pinPullup(B6, PU_EN);
pinPullup(B7, PU_EN);
#else
pinPullup(D3, PU_EN);
pinPullup(D4, PU_EN);
#endif
}
void buttons_init()
{
pinMode(BTN_UP_P, INPUT);
pinMode(BTN_DOWN_P, INPUT);
pinMode(BTN_SELECT_P, INPUT);
pinPullup(BTN_UP_P, PULLUP_ENABLE);
pinPullup(BTN_DOWN_P, PULLUP_ENABLE);
pinPullup(BTN_SELECT_P, PULLUP_ENABLE);
bits_set(PCMSK1, _BV(PCINT9)|_BV(PCINT10)|_BV(PCINT11));
BTN_INT_ON();
}
static void init()
{
// OSCCAL = 71;
clock_prescale_set(CPU_DIV);
// power_twi_disable();
// power_usart0_disable();
// power_timer0_disable();
// power_timer1_disable();
// power_timer2_disable();
// power_adc_disable();
#if !UART_ENABLE
power_usart0_disable();
#endif
// Pull-up on unused pins
pinPullup(D0, PULLUP_ENABLE);
pinPullup(D1, PULLUP_ENABLE);
pinPullup(D3, PULLUP_ENABLE);
pinPullup(D4, PULLUP_ENABLE);
pinPullup(B7, PULLUP_ENABLE);
#if PIN_DEBUG != PIN_DEBUG_NONE
pinMode(PIN_DEBUG_PIN, OUTPUT);
#endif
// Pin change interrupt on USB power sense pin
PCICR |= _BV(PCIE0);
PCMSK0 |= _BV(PCINT6);
// Everything else
uart_init();
spi_init();
i2c_init();
watchconfig_init();
led_init();
buzzer_init();
battery_init();
ds3231_init();
buttons_init();
millis_init();
pwrmgr_init();
time_init();
alarm_init();
oled_init();
}
void time_init()
{
pinPullup(RTC_INT_P, PU_EN);
#if RTC_SRC != RTC_SRC_INTERNAL
EICRA |= _BV(ISC01);
EIMSK |= _BV(INT0);
#endif
time_wake();
}
// Reset to known state (as per what the DS3231 datasheet says)
void i2c_resetState()
{
bit_clr(TWCR, TWEN); // Disable TWI
pinMode(SDA, INPUT);
pinPullup(SDA, PULLUP_ENABLE);
delay(1);
// Toggle SDL until SDA goes HIGH or times out
byte count = 64; // 64 * 1ms = 64ms timeout
while(!pinRead(SDA) && count--)
{
delay(1);
pinWrite(SDL, TOGGLE);
}
// Back to normal
pinMode(SDA, OUTPUT);
pinMode(SDL, OUTPUT);
pinWrite(SDA, HIGH);
pinWrite(SDL, HIGH);
}
