89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
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#include <stdio.h>
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#include <string.h>
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#include "serial.h"
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extern int verbosity;
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/* ---------------------------------------------------------------- */
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/*
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* compute the integer mean value of a four values
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* tagged lines.
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*/
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int parseXvalue(char *line, char cflag)
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{
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int value, foo;
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int vrd[4];
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value=0;
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if ( cflag != *line ) {
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if (verbosity) {
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fprintf(stderr, "%s : line[0] 0x%x bad\n",
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__func__, *line);
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}
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return -777;
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}
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foo = sscanf(line+1, "%d %d %d %d", vrd, vrd+1, vrd+2, vrd+3);
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#if DEBUG_LEVEL
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fprintf(stderr, "%s : sscanf -> %d\n", __func__, foo);
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#endif
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if (4 != foo) {
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return -666;
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}
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for (foo=0; foo<4; foo++) {
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value += vrd[foo];
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}
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value /= 4;
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return value;
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}
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/* ---------------------------------------------------------------- */
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/*
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* this fonction is specific to the LM35 thermo-sensor
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* connected to a ADC pin of an Arduino Mega
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*
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* WARNING !
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* this function _must_ be modofied if you change the
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* Vref of the Analog to Digital converter on the
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* Arduino !
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*
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*/
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int values2temperature(float array[4])
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{
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int foo;
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for (foo=0; foo<4; foo++) {
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array[foo] *= (1.1 / 1023.0 * 100.0);
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}
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int parse4values(char *line, char cflag, float array[4])
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{
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float ftmp[4];
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int foo;
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if ( cflag != *line ) {
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if (verbosity) {
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fprintf(stderr, "%s : line[0] 0x%x bad\n",
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__func__, *line);
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}
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return -777;
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}
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foo = sscanf(line+1, "%f %f %f %f", ftmp, ftmp+1, ftmp+2, ftmp+3);
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if (4 != foo) {
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fprintf(stderr, "%s : sscanf -> %d\n", __func__, foo);
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return -666;
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}
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// fprintf(stderr, "\tV %f\n", ftmp[0]);
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memcpy(array, ftmp, 4*sizeof(float));
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return 4;
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}
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/* ---------------------------------------------------------------- */
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