mirror of https://github.com/OpenIPC/firmware.git
118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#define BUF_SIZE 256
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const char *device = "/dev/jz_adc_aux_0";
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const char *nightModeCmd = "curl localhost/night/";
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int delayBetweenReads = 3;
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int thresholdOn = 900;
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int thresholdOff = 1000;
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bool nightModeEnabled = false;
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void
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jzAuxRead(const char *device, int *value)
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{
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int fd, size, count;
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fd = open(device, O_RDONLY);
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if(fd < 0){
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perror(device);
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exit(EXIT_FAILURE);
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}
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size = sizeof(*value);
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count = read(fd, (void *)value, size);
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close(fd);
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if(count != size){
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perror("read()");
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exit(EXIT_FAILURE);
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}
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}
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void
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updateNightMode()
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{
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int ret;
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char buf[BUF_SIZE];
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printf("Night Mode %s\n", nightModeEnabled ? "Enabled" : "Disabled");
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snprintf(buf, BUF_SIZE, "%s%s\n", nightModeCmd, nightModeEnabled ? "on" : "off");
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ret = system(buf);
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if(ret != 0){
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perror("system()");
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exit(EXIT_FAILURE);
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}
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}
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void
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usage(const char *argv0)
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{
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fprintf(stderr, "\nusage: %s [options]\n\n"
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"options:\n"
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" -D sets jz_adc_aux device (default: %s)\n"
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" -c sets the command to call to set night mode (default: %s)\n"
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" -d delay (in seconds) between ADC reads (default: %d)\n"
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" -O turn on night mode when ADC value drops below this threshold (default: %d)\n"
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" -F turn off night mode when ADC value goes above this threshold (default: %d)\n"
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" -h print this usage statement and exit\n\n", argv0, device, nightModeCmd, delayBetweenReads, thresholdOn, thresholdOff);
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}
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int
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main(int argc, char *argv[])
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{
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int opt, value;
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while((opt = getopt(argc, argv, "D:c:d:O:F:h:")) != -1){
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switch(opt){
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case 'D':
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device = optarg;
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break;
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case 'c':
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nightModeCmd = optarg;
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break;
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case 'd':
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delayBetweenReads = atoi(optarg);
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break;
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case 'O':
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thresholdOn = atoi(optarg);
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break;
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case 'F':
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thresholdOff = atoi(optarg);
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break;
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case 'h':
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usage(argv[0]);
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exit(EXIT_SUCCESS);
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default:
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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}
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if(daemon(0, 0) < 0){
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perror("daemon()");
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exit(EXIT_FAILURE);
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}
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sleep(5);
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while(true){
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jzAuxRead(device, &value);
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printf("Current value: %d\n", value);
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if(!nightModeEnabled && value >= thresholdOn){
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nightModeEnabled = true;
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updateNightMode();
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} else if(nightModeEnabled && value < thresholdOff){
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nightModeEnabled = false;
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updateNightMode();
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}
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sleep(delayBetweenReads);
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}
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return 0;
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}
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