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working on serial protocol

This commit is contained in:
tth 2019-01-28 14:42:33 +01:00
parent 054d0f574c
commit 15c6cbd8ae
5 changed files with 25 additions and 7 deletions
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2
serial/README.md
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@ -28,6 +28,8 @@ ne bloque pas, c'est un peu ironique.
Après un peu plus d'investigation, j'en arrive à conclure qu'il y a Après un peu plus d'investigation, j'en arrive à conclure qu'il y a
plein de subtilités entre les diverses variantes d'Arduino. Mais pas que. plein de subtilités entre les diverses variantes d'Arduino. Mais pas que.
Je pense que les quatre ports série supplémentaires de l'Arduino Mega
seront moins capricieux.

8
serial/essai.sh
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@ -5,18 +5,18 @@ DATAFILE="foo.dat"
TMPFILE="/tmp/dd2data" TMPFILE="/tmp/dd2data"
IMAGE="graphe.png" IMAGE="graphe.png"
NB_READ=25000 NB_READ=25
./t -v -n ${NB_READ} -d ${DEVICE} | tee -a ${DATAFILE} ./t -vv -n ${NB_READ} -d ${DEVICE} | tee -a ${DATAFILE}
gnuplot << __EOC__ gnuplot << __EOC__
set term png size 3200,512 set term png size 3200,512
set output "${IMAGE}" set output "${IMAGE}"
set grid set grid
set title "Dans le Double Dragon 2" set title "Temperature dans le Double Dragon 2"
set xdata time set xdata time
set timefmt "%s" set timefmt "%s"
set format x "%H:%M:%S" set format x "%a, %H:%M:%S"
set yrange [ 5.0 : 30.0] set yrange [ 5.0 : 30.0]
plot "${DATAFILE}" using 1:2 title " foo" with lines, \ plot "${DATAFILE}" using 1:2 title " foo" with lines, \
"${DATAFILE}" using 1:3 title " bar" with lines, \ "${DATAFILE}" using 1:3 title " bar" with lines, \

13
serial/funcs.c
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@ -7,6 +7,10 @@
extern int verbosity; extern int verbosity;
/* ---------------------------------------------------------------- */ /* ---------------------------------------------------------------- */
/*
* compute the integer mean value of a four values
* tagged lines.
*/
int parseXvalue(char *line, char cflag) int parseXvalue(char *line, char cflag)
{ {
int value, foo; int value, foo;
@ -32,10 +36,17 @@ if (4 != foo) {
for (foo=0; foo<4; foo++) { for (foo=0; foo<4; foo++) {
value += vrd[foo]; value += vrd[foo];
} }
value /= 4;
return value; return value;
} }
/* ---------------------------------------------------------------- */ /* ---------------------------------------------------------------- */
int values2temps(float array[4]) /*
* this fonction is specific to the LM35 thermo-sensor
* connected to a ADC pin of an Arduino Mega
*/
int values2temperature(float array[4])
{ {
int foo; int foo;
for (foo=0; foo<4; foo++) { for (foo=0; foo<4; foo++) {

2
serial/serial.h
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@ -17,7 +17,7 @@ int getline_to(int fd, char *where, int szm, int to_ms);
/* auxiliary and test functions */ /* auxiliary and test functions */
int parseXvalue(char *asciidatas, char id); int parseXvalue(char *asciidatas, char id);
int values2temps(float array[4]); int values2temperature(float array[4]);
int parse4values(char *line, char cflag, float array[4]); int parse4values(char *line, char cflag, float array[4]);

7
serial/t.c
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@ -37,7 +37,7 @@ for (count=0; count<iters; count++) {
// //
if (foo >= 0) { if (foo >= 0) {
temps = time(NULL); temps = time(NULL);
values2temps(datas); values2temperature(datas);
printf("%ld %f %f %f %f\n", temps, printf("%ld %f %f %f %f\n", temps,
datas[0], datas[1], datas[2], datas[3]); datas[0], datas[1], datas[2], datas[3]);
fflush(stdout); fflush(stdout);
@ -75,6 +75,11 @@ while ((opt = getopt(argc, argv, "d:n:v")) != -1) {
} }
if (verbosity) {
fprintf(stderr, "Testing Serial Software - compiled " \
__DATE__ " " __TIME__ "\n");
}
serial_in = prepare_UART(device, speed); serial_in = prepare_UART(device, speed);
if (serial_in < 0) { if (serial_in < 0) {
fprintf(stderr, "%s : open device : error %d on %s\n", fprintf(stderr, "%s : open device : error %d on %s\n",