void soft_spi0__write(uint8_t value) {
uint8_t i = 8;
do {
OUT_0(SOFT_SPI0__SCK);
if (value & 0x80) OUT_1(SOFT_SPI0__MOSI); else OUT_0(SOFT_SPI0__MOSI);
value <<= 1;
OUT_1(SOFT_SPI0__SCK);
}
while (--i);
}
void onewire__bus__set(const uint8_t value) {
if (value) {
OUT_1(ONEWIRE__OUT); // Buffer pull-up pulls up the bus high.
}
else {
OUT_0(ONEWIRE__OUT); // Buffer inverts and drives the bus low.
}
}
void state_change_pulse_transmitter__run(void) {
if (stateChangePulseTimeout != 0) // generating pulse
{
--stateChangePulseTimeout;
if (stateChangePulseTimeout == 0) // just reached 0 - pulse generated
{
OUT_1(STATE_CHANGE);
}
}
}
int main(void) {
soft_spi1__init();
usart0__init();
usart0__rx__enabled__set(1);
USE_AS_OUTPUT(LCD__LED);
lcd__init();
lcd__clear();
lcd__terminal__reset();
#if !defined(__AVR_ARCH__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-noreturn"
#endif
for(;;) {
uint8_t c = usart0__in__read();
if (c == 0) {
lcd__terminal__reset();
} else if (c == 1) {
c = usart0__in__read();
lcd__contrast(c);
} else if (c == 2) {
OUT_1(LCD__LED);
} else if (c == 3) {
OUT_0(LCD__LED);
} else if (c == 13) {
} else if (c == 10) {
lcd__terminal__line_feed();
} else if (c == 0x1F) {
uint8_t count = usart0__in__read();
for (;;) {
c = usart0__in__read();
soft_spi1__write(c);
if (!(--count)) break;
}
} else {
lcd__terminal__putch(c);
}
}
#if !defined(__AVR_ARCH__)
#pragma clang diagnostic pop
#endif
#if !defined(__AVR_ARCH__)
#pragma clang diagnostic push
#pragma ide diagnostic ignored "OCDFAInspection"
#endif
return 0;
#if !defined(__AVR_ARCH__)
#pragma clang diagnostic pop
#endif
}
void onewire__bus__init(void) {
USE_AS_OUTPUT(ONEWIRE__OUT);
OUT_1(ONEWIRE__OUT);
}
/** Reads the bit value from the bus */
ISR(timer2__overflow__interrupt__VECTOR, ISR_NAKED) {
if (onewire__bus__get()) OUT_1(LED); else OUT_0(LED);
reti();
}
