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#include <stdint.h>
#include <stdbool.h>
#include "rvcontroller-ecalls.h"
bool streq(char *a, char *b) {
for (int i=0;a[i] != 0 || b[i] != 0;i++) {
if (a[i] != b[i]) {
return false;
}
}
return true;
}
void sleep(uint32_t delay) {
//This will start having problems after about 130 years
//of uptime, but that's probably acceptable
uint32_t endtime = rdtime() + delay;
while (rdtime() < endtime) {}
return;
}
bool checkdetector(void) {
char channelbuf[16];
char msgbuf[16];
while (digiline_bufferlevel() > 0) {
lightweight_mode(0);
digiline_receive(channelbuf,16,msgbuf,16);
if (streq(channelbuf,"detect")) {
return true;
}
}
lightweight_mode(1);
return false;
}
void main() {
printstr("Railroad Crossing\nfor RVController\nInitializing HW\n");
digiline_send("light","OFF");
digiline_send("bell","off");
digiline_send("gate","up");
digiline_clearbuffer();
while (true) {
printstr("Idle\n");
lightweight_mode(1);
printstr("Lightweight: On\n");
while (!checkdetector()) {}
printstr("Train detected\nLightweight: Off\n");
lightweight_mode(0);
digiline_send("light","YELLOW");
printstr("Light: Yellow\n");
sleep(2);
digiline_send("bell","on");
printstr("Bell: On\n");
sleep(2);
digiline_send("light","RED");
printstr("Light: Red\n");
sleep(3);
digiline_send("gate","down");
printstr("Gate: Down\n");
sleep(4);
digiline_send("bell","off");
printstr("Bell: Off\n");
digiline_clearbuffer();
for (uint8_t time = 15;time > 0;time--) {
printstr("Timeout in ");
printint(time);
printstr("s\n");
sleep(1);
bool train = checkdetector();
lightweight_mode(0); //checkdetector() turns this on
if (train) {
digiline_clearbuffer();
time = 25;
printstr("Time reset by train\n");
}
}
printstr("Timed out\n");
digiline_send("gate","up");
printstr("Gate: Up\n");
sleep(2);
digiline_send("light","OFF");
printstr("Light: Off\n");
}
}
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