--- /dev/null
+/****************************************************************************
+ * Get data from sensors and decode
+ *
+ * main.c
+ *
+ *
+ * Copyright 2013-2014 Nathael Pajani <nathael.pajani@ed3l.fr>
+ *
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ ****************************************************************************/
+
+
+/* this protocol handler is designed to run on a host replacing the DTPlug,
+ * but should be easy to use as a source for the protocol handling code for
+ * the DTPlug itself.
+ */
+
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <string.h>
+#include <errno.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <arpa/inet.h>
+#include "serial_utils.h"
+
+
+#define BUF_SIZE 100
+
+#define PROG_NAME "Sensors polling and decode"
+#define VERSION "0.1"
+
+
+void help(char *prog_name)
+{
+ fprintf(stderr, "---------------- "PROG_NAME" --------------------------------\n");
+ fprintf(stderr, "Usage: %s [options]\n" \
+ " Available options:\n" \
+ " \t -d | --device : Serial device to use for serial communication with the module\n" \
+ " \t -h | --help : Print this help\n" \
+ " \t -v | --version : Print programm version\n" \
+ " All other arguments are data for the command, handled depending on the command.\n", prog_name);
+ fprintf(stderr, "-----------------------------------------------------------------------\n");
+}
+
+char data[150];
+int data_idx = 0;
+
+
+int protocol_decode(char c)
+{
+ if (data_idx == 0) {
+ if (c == '#') {
+ data[0] = c;
+ data_idx = 1;
+ }
+ return 0;
+ }
+ if (data_idx > 0) {
+ data[data_idx] = c;
+ if (data_idx == 19) {
+ data_idx = 0;
+ return 1;
+ }
+ data_idx++;
+ }
+ return 0;
+}
+
+int main(int argc, char* argv[])
+{
+ /* Serial */
+ char* device = NULL;
+ int slave_fd = 0;
+
+ while(1) {
+ int option_index = 0;
+ int c = 0;
+
+ struct option long_options[] = {
+ {"device", required_argument, 0, 'd'},
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'v'},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long(argc, argv, "d:hv", long_options, &option_index);
+
+ /* no more options to parse */
+ if (c == -1) break;
+ switch (c) {
+
+ /* d, device */
+ case 'd':
+ device = optarg;
+ break;
+
+ /* v, version */
+ case 'v':
+ printf("%s Version %s\n", PROG_NAME, VERSION);
+ return 0;
+ break;
+
+ /* h, help */
+ case 'h':
+ default:
+ help(argv[0]);
+ return 0;
+ }
+ }
+
+
+ /* Need Serial port as parameter */
+ if (device == NULL) {
+ printf("Error, need serial (tty) device\n");
+ help(argv[0]);
+ return -1;
+ }
+
+ /* Open tty */
+ slave_fd = serial_setup(device);
+ if (slave_fd < 0) {
+ printf("Unable to open specified serial port %s\n", device);
+ return -2;
+ }
+
+ /* ************************************************* */
+ /* And never stop handling data ! */
+ while (1) {
+ int len = 0, ret = 0;
+ struct timeval now;
+ char buf[BUF_SIZE];
+ int idx = 0;
+
+ /* Send periodic requests for temperature */
+ gettimeofday(&now, NULL);
+
+ memset(buf, 0, BUF_SIZE);
+ /* Get serial data and try to build a packet */
+ len = read(slave_fd, buf, BUF_SIZE);
+ if (len < 0) {
+ if (len == 0) {
+ printf("\nError, got activity on serial link, but no data ... End of file.\n");
+ } else {
+ perror("serial read error");
+ }
+ close(slave_fd);
+ idx = 0;
+ len = 0;
+ do {
+ slave_fd = serial_setup(device);
+ usleep(10 * 1000);
+ } while (slave_fd < 0);
+ } else {
+ write(2, buf, len);
+ }
+ while (idx < len) {
+ ret = protocol_decode(buf[idx]);
+ /* Check return code to know if we have a valid packet */
+ if (ret == 1) {
+ /* Valid packet received, parse data */
+ char addr;
+ int got_tsl, got_veml, got_bme;
+ uint16_t raw_humidity;
+ uint16_t lux, ir, uv;
+ uint16_t pressure, comp_temp, humidity; /* From BME */
+ uint16_t* vars = (uint16_t*)data;
+
+ addr = data[1] & 0x1F;
+ raw_humidity = (uint16_t)htons(vars[1]);
+ lux = (uint16_t)htons(vars[2]);
+ ir = (uint16_t)htons(vars[3]);
+ uv = (uint16_t)htons(vars[4]);
+ pressure = (uint16_t)htons(vars[5]);
+ comp_temp = (uint16_t)htons(vars[6]);
+ humidity = (uint16_t)htons(vars[7]);
+
+ /* Display data */
+ printf("\e[H"); /* Goto terminal home (top left) */
+ printf("\e[KSensor %d\n", addr);
+ printf("\e[K\tSoil: %d\n", raw_humidity);
+ printf("\e[K\tLux: %d, IR: %d, UV: %d\n", lux, ir, uv);
+ printf("\e[K\tPatm: %d hPa, Temp: %d,%02d degC, Humidity: %d,%d rH\n\n",
+ pressure,
+ comp_temp / 10, (comp_temp > 0) ? (comp_temp % 10) : ((-comp_temp) % 10),
+ humidity / 10, humidity % 10);
+ printf("\e[K\n");
+ }
+
+ idx++;
+ }
+
+ } /* End of infinite loop */
+
+ close(slave_fd);
+ return 0;
+}
+
+
--- /dev/null
+/*********************************************************************
+ *
+ * Serial utility functions
+ *
+ *
+ * Copyright 2012-2014 Nathael Pajani <nathael.pajani@ed3l.fr>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *********************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+
+#define SERIAL_BAUD B115200
+
+
+int serial_setup(char* name)
+{
+ struct termios tio;
+ int fd = -1;
+
+ /* Open serial port */
+ fd = open(name, O_RDWR);
+ if (fd < 0) {
+ perror("Unable to open communication with companion chip");
+ return -1;
+ }
+ /* Setup serial port */
+ memset(&tio, 0, sizeof(tio));
+ tio.c_cflag = CS8 | CREAD | CLOCAL; /* 8n1, see termios.h for more information */
+ tio.c_cc[VMIN] = 1;
+ tio.c_cc[VTIME] = 5;
+ cfsetospeed(&tio, SERIAL_BAUD);
+ cfsetispeed(&tio, SERIAL_BAUD);
+ tcsetattr(fd, TCSANOW, &tio);
+
+ return fd;
+}
+
--- /dev/null
+/*********************************************************************
+ *
+ * Serial utility functions
+ *
+ *
+ * Copyright 2012 Nathael Pajani <nathael.pajani@ed3l.fr>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *********************************************************************/
+#ifndef SERIAL_UTILS_H
+#define SERIAL_UTILS_H
+
+/* Setup serial comunication, using name if given or saved name if name is NULL
+ * SERIAL_BAUD B38400
+ * c_cflag (CS7 | PARENB | CREAD | CLOCAL) (7e1)
+ */
+int serial_setup(char* name);
+
+#endif /* SERIAL_UTILS_H */
+
