First version of datalog for TorusTech
authorNathael Pajani <nathael.pajani@ed3l.fr>
Mon, 26 Apr 2021 22:00:44 +0000 (00:00 +0200)
committerNathael Pajani <nathael.pajani@ed3l.fr>
Mon, 26 Apr 2021 22:00:44 +0000 (00:00 +0200)
host/exanh_datalog/.gitignore [new file with mode: 0644]
host/exanh_datalog/Makefile [new file with mode: 0644]
host/exanh_datalog/main.c [new file with mode: 0644]
host/exanh_datalog/serial_utils.c [new file with mode: 0644]
host/exanh_datalog/serial_utils.h [new file with mode: 0644]

diff --git a/host/exanh_datalog/.gitignore b/host/exanh_datalog/.gitignore
new file mode 100644 (file)
index 0000000..4e601ef
--- /dev/null
@@ -0,0 +1,3 @@
+exanh_datalog
+exanh_datalog_armhf
+*.log
diff --git a/host/exanh_datalog/Makefile b/host/exanh_datalog/Makefile
new file mode 100644 (file)
index 0000000..b0e856f
--- /dev/null
@@ -0,0 +1,32 @@
+#CROSS_COMPILE ?= arm-linux-gnueabihf-
+CC = $(CROSS_COMPILE)gcc
+
+CFLAGS = -Wall -O2 -Wextra
+
+EXEC = exanh_datalog
+
+all: $(EXEC)
+
+
+OBJDIR = objs
+SRC = $(shell find . -name \*.c)
+OBJS = ${SRC:%.c=${OBJDIR}/%.o}
+INCLUDES = includes/
+
+${OBJDIR}/%.o: %.c
+       @mkdir -p $(dir $@)
+       @echo "-- compiling" $<
+       @$(CC) -MMD -MP -MF ${OBJDIR}/$*.d $(CFLAGS) $< -c -o $@ -I$(INCLUDES)
+
+$(EXEC): $(OBJS)
+       @echo "Linking $@ ..."
+       @$(CC) $(LDFLAGS) -o $@ $(OBJS)
+       @echo Done.
+
+
+clean:
+       find ${OBJDIR} -name "*.o" -exec rm {} \;
+       find ${OBJDIR} -name "*.d" -exec rm {} \;
+
+mrproper: clean
+       rm -f $(EXEC)
diff --git a/host/exanh_datalog/main.c b/host/exanh_datalog/main.c
new file mode 100644 (file)
index 0000000..870d7aa
--- /dev/null
@@ -0,0 +1,576 @@
+/****************************************************************************
+ *  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 <time.h>
+#include "serial_utils.h"
+
+
+#define BUF_SIZE  100
+
+#define PROG_NAME  "Sensors polling and decode"
+#define VERSION  "0.1"
+
+#define MIN_SECS_SINCE_EPOCH 1580000000
+#define MAX_RETRY  10
+
+/* Set to 0, 1 or 2 to change debug level */
+int debug = 0;
+
+struct sensor_info {
+       uint8_t addr;
+       uint8_t got_tsl;
+       uint8_t got_veml;
+       uint8_t got_bme;
+       uint16_t raw_humidity; /* Soil */
+       uint16_t lux;
+       uint16_t ir;
+       uint16_t uv;
+       uint16_t pressure;
+       int16_t comp_temp;
+       uint16_t humidity; /* From BME */
+       uint16_t seqnum;
+};
+
+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 -c | --chain : Sensor Chain number (used to store data to the right directory)\n" \
+               "  \t -p | --period : delay in seconds between two sensors data request\n" \
+               "  \t -V | --verbose : be more verbose\n" \
+               "  \t -D | --debug : add full debug\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");
+}
+
+
+/*****************************************************************************/
+/* Address handling */
+
+#define NB_ADDRESS 8
+uint8_t addr_list[NB_ADDRESS + 1];
+uint8_t addr_retry[NB_ADDRESS + 1];
+uint16_t last_seq_num[NB_ADDRESS + 1];
+uint8_t probe_sensors[NB_ADDRESS + 1];
+int pkt_count[NB_ADDRESS];
+
+int get_next_free_addr(void)
+{
+       int i = 0;
+       /* Start at 1, do not use address 0 */
+       for (i = 1; i < NB_ADDRESS; i++) {
+               if (addr_list[i] == 0) {
+                       addr_list[i] = i;
+                       return i;
+               }
+       }
+       return -1;
+}
+
+/*****************************************************************************/
+/* Requests to sensors */
+
+void send_request(int slave_fd, int addr_index)
+{
+       char buf[4];
+
+       buf[0] = '#';
+       buf[1] = addr_index;
+       buf[2] = 'a'; /* Request all sensor info */
+
+       write(slave_fd, buf, 3);
+       if (debug) {
+               printf("Sent request to %d(%d)\n", addr_index, addr_list[addr_index]);
+       }
+}
+
+void send_new_address(int slave_fd)
+{
+       char buf[4];
+
+       buf[0] = '#';
+       buf[1] = 0xFF;
+       buf[2] = get_next_free_addr();
+
+       write(slave_fd, buf, 3);
+       if (debug) {
+               printf("New address sent: %d\n", buf[2]);
+       }
+}
+
+void set_led(int slave_fd, struct sensor_info* info)
+{
+       uint8_t buf[6];
+       int red = 0;
+       int green = 0;
+
+       red = (info->raw_humidity - 1500) / 10;
+       green = 200 - red;
+       buf[0] = '#';
+       buf[1] = info->addr;
+       buf[2] = 'l';
+       buf[3] = red; /* Red */
+       buf[4] = green; /* Green */
+       buf[5] = 0; /* Blue */
+
+       write(slave_fd, buf, 6);
+       if (debug) {
+               printf("Led color sent: %d : %d - %d\n", buf[1], buf[3], buf[4]);
+       }
+}
+
+void clear_leds(int slave_fd)
+{
+       char buf[6];
+
+       buf[0] = '#';
+       buf[1] = 0xFF;
+       buf[2] = 'l';
+       buf[3] = 0; /* Red */
+       buf[4] = 0; /* Green */
+       buf[5] = 0; /* Blue */
+
+       write(slave_fd, buf, 6);
+       if (debug) {
+               printf("Leds cleared\n");
+       }
+}
+
+/*****************************************************************************/
+/* Packets handling */
+
+#define PKT_SIZE 20
+uint8_t data[150];
+int data_idx = 0;
+int bad_checksums = 0;
+
+int packet_slice(char c)
+{
+       if (data_idx == 0) {
+               if (c == '#') {
+                       data[0] = c;
+                       data_idx = 1;
+               } else if (c == '$') {
+                       data[0] = c;
+                       /* Set packet length to 19 so that next character received (request type)
+                               will terminate the packet */
+                       data_idx = PKT_SIZE - 1;
+               }
+               return 0;
+       }
+       if (data_idx > 0) {
+               data[data_idx] = c;
+               if (data_idx == (PKT_SIZE - 1)) {
+                       data_idx = 0;
+                       return 1;
+               }
+               data_idx++;
+       }
+       return 0;
+}
+
+int packet_check(void)
+{
+       switch (data[0]) {
+               case '#' : { /* Data packet */
+                       int i = 0;
+                       uint32_t sum = 0;
+                       for (i = 0; i < (PKT_SIZE - 1); i++) {
+                               sum += data[i];
+                       }
+                       if ((sum & 0xFF) == data[(PKT_SIZE - 1)]) {
+                               printf("Packet OK\n");
+                               return 1; /* Checksum OK */
+                       }
+                       printf("Bad packet (cksum)\n");
+                       bad_checksums++; /* Count bad checksum for current address */
+                       return 2;
+               }
+               break;
+               case '$' : /* Request from device */
+                       printf("Request received: %c\n", data[(PKT_SIZE - 1)]);
+                       if (data[(PKT_SIZE - 1)] == 'c') {
+                               /* Request for a new address */
+                               return 3;
+                       }
+               break;
+       }
+       return 0;
+}
+
+/*****************************************************************************/
+void parse_packet(struct sensor_info* info)
+{
+       uint16_t* vars = (uint16_t*)data;
+       
+       /* Decode data */
+       info->addr = data[1] & 0x1F;
+       info->raw_humidity = (uint16_t)htons(vars[1]);
+       info->lux = (uint16_t)htons(vars[2]);
+       info->ir = (uint16_t)htons(vars[3]);
+       info->uv = (uint16_t)htons(vars[4]);
+       info->pressure = (uint16_t)htons(vars[5]);
+       info->comp_temp = (int16_t)htons(vars[6]);
+       info->humidity = (uint16_t)htons(vars[7]);
+       info->seqnum = (uint16_t)htons(vars[8]);
+
+       pkt_count[info->addr]++;
+}
+
+void display_info(struct sensor_info* info)
+{
+       if (debug) {
+               /* Display data */
+               if (debug == 3) {
+                       printf("\e[H"); /* Goto terminal home (top left) */
+               }
+               printf("\e[KSensor %d, pkt %d, seq %d\n", info->addr, pkt_count[info->addr], info->seqnum);
+               if (debug == 3) {
+                       printf("\e[K\tSoil: %d\n", info->raw_humidity);
+                       printf("\e[K\tLux: %d, IR: %d, UV: %d\n", info->lux, info->ir, info->uv);
+                       printf("\e[K\tPatm: %d hPa, Temp: %d,%02d degC, Humidity: %d,%d rH\n\n",
+                               info->pressure,
+                               info->comp_temp / 10,  (info->comp_temp > 0) ? (info->comp_temp % 10) : ((-info->comp_temp) % 10),
+                               info->humidity / 10, info->humidity % 10);
+                       printf("\e[K\n");
+               }
+       }
+}
+
+#define LOGFILE_NAME_LEN 100
+#define LINE_LEN 200
+void store_info(struct sensor_info* info, int chain, time_t seconds)
+{
+       char logfile_name[LOGFILE_NAME_LEN];
+       struct tm time;
+       struct stat statbuf;
+       int logfile = 0, ret = 0;
+
+       gmtime_r(&seconds, &time);
+       snprintf(logfile_name, LOGFILE_NAME_LEN, "chain%d/sensor%d/%d-%02d-%02d.log",
+                                                chain, info->addr,
+                                                (time.tm_year + 1900), (time.tm_mon + 1), time.tm_mday);
+
+       /* Upon each day change, create a new file with it's header */
+       if (stat(logfile_name, &statbuf) == -1) {
+               logfile = open(logfile_name, (O_CREAT | O_WRONLY), (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH));
+               if (logfile > 0) {
+                       /* Write header to file */
+                       char header[LINE_LEN];
+                       int nb = 0;
+                       nb = snprintf(header, LINE_LEN, "# Data logs for sensor %d on chain %d - %s#\n",
+                                                info->addr, chain, ctime(&seconds));
+                       ret = write(logfile, header, nb);
+                       if (ret != nb) {
+                               perror("Write error for hearder");
+                               fprintf(stderr, "Error while writting first part of header to log file %s (%d) for sensor %d\n",
+                                                       logfile_name, logfile, info->addr);
+                               close(logfile);
+                               return;
+                       }
+                       nb = snprintf(header, LINE_LEN,
+                                "# Format : seconds(epoch), seq number, raw soil, raw lux, raw ir, raw uv, press (hPa), temp(1/10°C), air hum(1/10%%)\n#\n\n");
+                       ret = write(logfile, header, nb);
+                       if (ret != nb) {
+                               perror("Write error for hearder");
+                               fprintf(stderr, "Error while writting second part of header to log file %s (%d) for sensor %d\n",
+                                                       logfile_name, logfile, info->addr);
+                               close(logfile);
+                               return;
+                       }
+               } else {
+                       perror("Create logfile error");
+                       fprintf(stderr, "Unable to create log file %s for sensor %d\n", logfile_name, info->addr);
+                       return;
+               }
+               close(logfile);
+       }
+
+       logfile = open(logfile_name, (O_APPEND | O_WRONLY));
+       if (logfile > 0) {
+               char line[LINE_LEN];
+               int nb = 0;
+               nb = snprintf(line, LINE_LEN, "%ld, %d, %d, %d, %d, %d, %d, %d, %d\n",
+                                                       seconds, info->seqnum, info->raw_humidity,
+                                                       info->lux, info->ir, info->uv,
+                                                       info->pressure, info->comp_temp, info->humidity);
+               ret = write(logfile, line, nb);
+               if (ret != nb) {
+                       perror("Write error for data");
+                       fprintf(stderr, "Error while writting data line to log file %s (%d) for sensor %d\n",
+                                               logfile_name, logfile, info->addr);
+               }
+               close(logfile);
+       } else {
+               perror("Error openning logfile for data");
+               fprintf(stderr, "Unable to open logfile %s for sensor %d\n", logfile_name, info->addr);
+       }
+}
+
+/*****************************************************************************/
+/* Main part of programm */
+
+int main(int argc, char* argv[])
+{
+       /* Serial */
+       char* device = NULL;
+       int slave_fd = 0;
+       int chain = 0;
+       int period = 1;
+       struct timeval start_tstamp;
+
+       while(1) {
+               int option_index = 0;
+               int c = 0;
+
+               struct option long_options[] = {
+                       {"device", required_argument, 0, 'd'},
+                       {"chain", required_argument, 0, 'c'},
+                       {"period", required_argument, 0, 'p'},
+                       {"debug", no_argument, 0, 'D'},
+                       {"verbose", no_argument, 0, 'V'},
+                       {"help", no_argument, 0, 'h'},
+                       {"version", no_argument, 0, 'v'},
+                       {0, 0, 0, 0}
+               };
+
+               /* If time is not yet setup, wait for system to fix this */
+               do {
+                       gettimeofday(&start_tstamp, NULL);
+               } while (start_tstamp.tv_sec < MIN_SECS_SINCE_EPOCH);
+
+               c = getopt_long(argc, argv, "d:c:p:DVhv", long_options, &option_index);
+
+               /* no more options to parse */
+               if (c == -1) break;
+               switch (c) {
+
+                       /* d, device */
+                       case 'd':
+                               device = optarg;
+                               break;
+
+                       /* p, period */
+                       case 'p':
+                               period = strtoul(optarg, NULL, 10);
+                               break;
+
+                       /* c, chain */
+                       case 'c':
+                               chain = strtoul(optarg, NULL, 10);
+                               break;
+
+                       /* V, verbose */
+                       /* D, debug */
+                       case 'D':
+                               debug++;
+                               __attribute__ ((fallthrough));
+                       case 'V':
+                               debug++;
+                               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;
+       }
+
+       memset(addr_list, 0, NB_ADDRESS);
+       memset(pkt_count, 0, NB_ADDRESS * sizeof(int));
+
+       /* Open tty */
+       slave_fd = serial_setup(device);
+       if (slave_fd < 0) {
+               printf("Unable to open specified serial port %s\n", device);
+               return -2;
+       }
+
+       printf("Logs started on %s\n", ctime(&(start_tstamp.tv_sec)));
+
+       /* ************************************************* */
+       /* And never stop handling data ! */
+       while (1) {
+               static int addr_index = 0;
+               static time_t last = 0;
+               int len = 0, ret = 0;
+               struct timeval now;
+               char buf[BUF_SIZE];
+
+               /* Handle time */
+               gettimeofday(&now, NULL); /* Get seconds since epoch */
+
+               /* Send periodic requests for data */
+               if (now.tv_sec >= (last + period)) {
+                       addr_index = NB_ADDRESS - 1;
+                       last = now.tv_sec;
+                       if (debug) {
+                               printf("Here\n");
+                       }
+                       clear_leds(slave_fd);
+                       /* Reset all retry counters */
+                       memset(addr_retry, MAX_RETRY, NB_ADDRESS);
+               }
+               if (addr_index > 0) {
+                       send_request(slave_fd, addr_index);
+                       data_idx = 0; /* Moving to next sensor, reset data index for packet Rx */
+                       bad_checksums = 0; /* Reset bad checksums for current address */
+                       addr_index--;
+               }
+               usleep(100 * 1000); /* Leave some time for the sensor to reply, and for the system */
+
+               memset(buf, 0, BUF_SIZE);
+               /* Get serial data and try to build a packet */
+               len = read(slave_fd, buf, BUF_SIZE);
+               /* FIXME */ //printf("read: len: %d, idx: %d\n", len, data_idx);
+               if (len < 0) {
+                       if (errno == EAGAIN) {
+                               /* Nothing to do, we're in non-blocking mode */
+                       } else {
+                               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);
+                               len = 0;
+                               do {
+                                       slave_fd = serial_setup(device);
+                                       usleep(10 * 1000);
+                               } while (slave_fd < 0);
+                       }
+               } else {
+                       int idx = 0;
+                       /* We are receiving something, log to stderr */
+                       if (debug == 2) {
+                               write(2, buf, len);
+                       }
+                       while (idx < len) {
+                               ret = packet_slice(buf[idx]);
+                               /* Check return code to know if we have enough data for a packet */
+                               if (ret == 1) {
+                                       /* check that the packet is valid */
+                                       ret = packet_check();
+                               }
+                               switch (ret) {
+                                       case 1: {
+                                                       struct sensor_info info;
+                                                       /* Valid packet received, parse data */
+                                                       parse_packet(&info);
+                                                       if (info.seqnum == last_seq_num[info.addr]) {
+                                                               /* Ignore duplicated packet */
+                                                               break;
+                                                       }
+                                                       /* Check data validity */
+                                                       if ((info.raw_humidity < 1000) || (info.raw_humidity > 4000)) {
+                                                               break;
+                                                       }
+                                                       if ((info.pressure < 800) || (info.pressure > 1200)) {
+                                                               break;
+                                                       }
+                                                       if ((info.comp_temp < -400) || (info.comp_temp > 1000)) {
+                                                               break;
+                                                       }
+                                                       if (info.humidity > 1000) {
+                                                               break;
+                                                       }
+
+                                                       /* New packet received */
+                                                       last_seq_num[info.addr] = info.seqnum;
+                                                       display_info(&info);
+
+                                                       /* New device ? store address */
+                                                       if ((info.addr < NB_ADDRESS) && (addr_list[info.addr] == 0)) {
+                                                               addr_list[info.addr] = info.addr;
+                                                       }
+               
+                                                       /* Store data to log file */
+                                                       store_info(&info, chain, now.tv_sec);
+
+                                                       /* Update leds */
+                                                       set_led(slave_fd, &info);
+                                               }
+                                               break;
+                                       case 2:
+                                               /* Checksum error for all three packets, retry */
+                                               if ((addr_retry[addr_index + 1] > 0) && (bad_checksums == 3)) {
+                                                       addr_index++;
+                                                       addr_retry[addr_index]--;
+                                               }
+                                               break;
+                                       case 3:
+                                               /* Done handling received data, need to send a new address to a sensor ? */
+                                               send_new_address(slave_fd);
+                                               break;
+                               }
+                               idx++;
+                       }
+               }
+       } /* End of infinite loop */
+
+       close(slave_fd);
+       return 0;
+}
+
+
diff --git a/host/exanh_datalog/serial_utils.c b/host/exanh_datalog/serial_utils.c
new file mode 100644 (file)
index 0000000..700c11b
--- /dev/null
@@ -0,0 +1,59 @@
+/*********************************************************************
+ *
+ *   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 | O_NONBLOCK);
+       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;
+}
+
diff --git a/host/exanh_datalog/serial_utils.h b/host/exanh_datalog/serial_utils.h
new file mode 100644 (file)
index 0000000..7c17bcf
--- /dev/null
@@ -0,0 +1,32 @@
+/*********************************************************************
+ *
+ *   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 */
+