uint8_t slave_null_read_data(uint8_t slave_addr, uint8_t* buf, uint8_t max_len)
{
/* limit number of registers to the max. available */
if(max_len > sizeof(modbus_null_input_register_list))
{
max_len = sizeof(modbus_null_input_register_list);
}
#if MODBUS_NULL_SLAVE_SIMULATION == 0
/* Detecta equipamentos de medição e faz a leitura dos dados */
NULL_IRList.Reg.Pressure_Valve = sensors_read(PRESSURE_VALVE);
NULL_IRList.Reg.Oil_Level = sensors_read(SENSOR_LEVEL);
FATFS *fs; /* Pointer to file system object */
uint32_t p1;
if (f_getfree(".", (DWORD*)&p1, &fs) == FR_OK)
{
NULL_IRList.Reg.SD_bytes_available = (uint32_t)(p1 * fs->csize * 512);
}
NULL_IRList.Reg.Local_time = (uint32_t)simon_clock_get();
#else
uint8_t nregs = 0;
/* return random data */
for(nregs = NULL_REGLIST_OFFSET_NREGS; nregs < (NULL_REGLIST_INPUT_NREGS+NULL_REGLIST_OFFSET_NREGS);nregs++)
{
NULL_IRList.Regs16[nregs] = random_get();
}
#endif
/* get and set timestamp of reading and device id */
SetModbusHeader(slave_addr, NULL_IRList.Regs8);
memcpy(buf,NULL_IRList.Regs8,max_len);
return (max_len);
}
int
main (int argc, char **argv)
{
int ch;
/*char uptimeInfo[15], lightInfo[15], timebuf[15];*/
/*int lightlevel;*/
int ocontrast = 40; /* Contrast defaults to 40 */
screen_t *sc;
sensor_t sensors;
led_t displed;
extern char *optarg;
extern int optind;/*, opterr, optopt;*/
while ((ch = getopt(argc, argv, "lDvc:")) != -1) {
switch (ch) {
case 'l':
led_on_darkness=1;
break;
case 'D':
dodaemon=1;
break;
case 'v':
verbose_mode=1;
break;
case 'c':
ocontrast = atoi(optarg);
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (dodaemon) {
daemon(1, 0);
}
openlog("pcd8544", LOG_PID|LOG_PERROR, LOG_LOCAL0);
/* print infos */
syslog(LOG_LOCAL0|LOG_INFO, "pilab");
if ((sc = screen_init(DIN_PIN, SCLK_PIN, DC_PIN, RST_PIN, CS_PIN, ocontrast)) == NULL) {
syslog(LOG_LOCAL0|LOG_INFO, "failed to init screen");
err(3, "failed to init screen");
}
/* check wiringPi setup */
delay(2000);
if (verbose_mode)
syslog(LOG_LOCAL0|LOG_DEBUG, "initialisation of screen led");
led_init(&displed, DISP_LED_GPIO);
if (verbose_mode)
syslog(LOG_LOCAL0|LOG_DEBUG, "initialisation of screen led - bringing up");
led_setstate(&displed, LED_UP);
for (;;) {
/* clear lcd */
LCDclear();
if (sensors_read(&sensors) < 0)
syslog(LOG_LOCAL0|LOG_INFO, "failed to read data from sensors");
if (led_on_darkness) {
if (sensors.sens_light < 50 && displed.l_state != LED_UP) {
if (verbose_mode)
syslog(LOG_LOCAL0|LOG_DEBUG, "bringing screen led up");
led_setstate(&displed, LED_UP);
} else if (sensors.sens_light > 50 && displed.l_state == LED_UP)
led_setstate(&displed, LED_DOWN);
}
if (statistics_update(sc, &sensors) < 0)
syslog(LOG_LOCAL0|LOG_INFO, "failed to update statistics");
if (screen_include(sc) < 0)
syslog(LOG_LOCAL0|LOG_INFO, "failed to include file line");
/* build screen */
screen_update(sc);
sleep(5);
}
return 0;
}