From e620b94a707aacaef0a4d612f25a75cb332c56ee Mon Sep 17 00:00:00 2001 From: Bernhard Tittelbach Date: Sat, 16 Nov 2013 22:04:52 +0000 Subject: gas leak alarm git-svn-id: https://svn.spreadspace.org/avr/trunk@247 aa12f405-d877-488e-9caf-2d797e2a1cc7 --- usb-ajar/usb-ajar.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'usb-ajar') diff --git a/usb-ajar/usb-ajar.c b/usb-ajar/usb-ajar.c index c6ccee5..507c87f 100644 --- a/usb-ajar/usb-ajar.c +++ b/usb-ajar/usb-ajar.c @@ -104,11 +104,17 @@ int main(void) PIN_HIGH(PORTB, PINB1); PINMODE_INPUT(DDRB, PINB1); + PIN_HIGH(PORTB, PINB0); + PINMODE_INPUT(DDRB, PINB0); + PIN_LOW(PORTD, PIND7); + PINMODE_OUTPUT(DDRD, PIND7); owi_init(PINC4, &PINC); char door_ajar = 0; char last_door_ajar = 0; + char gas_leak = 0; + char last_gas_leak = 0; num_temp_sensors_ = ds1820_discover(); uint16_t ms_elapsed = 0; @@ -139,6 +145,13 @@ int main(void) led2_off(); } } + gas_leak = ! (PINB & _BV(PINB0)); + if (gas_leak != last_gas_leak) + { + if (gas_leak) + printf("GasLeakAlert\r\n"); + last_gas_leak = gas_leak; + } anyio_task(); if (door_ajar) { @@ -155,6 +168,8 @@ int main(void) if (ms_elapsed & (1<<14)) { + if (gas_leak) + printf("GasLeakAlert\r\n"); ms_elapsed = 0; tempToUSB(12); } -- cgit v1.2.3