change tension limits

src/main.c

@@ -12,6 +12,9 @@
 #include <net/if.h>
 #include <fcntl.h>
 #include <termios.h>
+#include <errno.h>
+#include <locale.h>
+#include <stdlib.h>
 
 const int digit_bitmaps[10][5][3] = {
         {{1,1,1},{1,0,1},{1,0,1},{1,0,1},{1,1,1}}, // 0
@@ -136,7 +139,7 @@ void read_can(Tel *t, int soc) {
 
                 case 0x382:
                         if (frame.can_dlc >= 2) {
-                                t->rpm.data = frame.data[0] | (frame.data[1] << 8);
+                                t->rpm.data = abs((int16_t)(frame.data[0] | (frame.data[1] << 8)));
                         }
                         break;
                 default:
@@ -172,6 +175,70 @@ void read_uart(Tel *t, int fd, SerialParser *uart_str) {
         }
 }
 
+void read_uart_receiver(Tel *t, int fd, SerialParser *uart_str) {
+        char buf[128];
+        int n = read(fd, buf, sizeof(buf));
+
+        if (n < 0) return; // -1 EAGAIN means empty
+
+        if (n > 0) {
+                for (int i = 0; i < n; i++) {
+                        char c = buf[i];
+                        if (c == '\n') {
+                                uart_str->linebuf[uart_str->linepos] = '\0';
+                                int tmp_speed, tmp_rpm, tmp_power, tmp_bat, tmp_warn;
+                                float tmp_eff, tmp_tens, tmp_amp;
+                                if (sscanf(uart_str->linebuf, "%d,%d,%d,%f,%d,%f,%f,%d", &tmp_speed, &tmp_rpm, &tmp_power, &tmp_eff, &tmp_bat, &tmp_tens, &tmp_amp, &tmp_warn) == 8) {
+                                        t->speed.data = tmp_speed;
+                                        t->rpm.data = tmp_rpm;
+                                        t->power.data = tmp_power;
+                                        t->eff.data = tmp_eff;
+                                        t->bat.data = tmp_bat;
+                                        t->tens.data = tmp_tens;
+                                        t->amp.data = tmp_amp;
+                                        t->message.error_level = tmp_warn;
+                                }
+
+                                uart_str->linepos = 0;
+                        }
+                        if (uart_str->linepos < (int)sizeof(uart_str->linebuf) - 1) {
+                                uart_str->linebuf[uart_str->linepos++] = c;
+                        } else {
+                                uart_str->linepos = 0; // drop line to prevent overflow
+                        }
+                }
+        }
+}
+
+void write_uart(Tel *t, int fd) {
+        // speed,rpm,power,eff,bat,tens,amp,warn
+        char msg[256];
+        int len = snprintf(msg, sizeof(msg), "%d,%d,%d,%.1f,%d,%.1f,%.1f,%d\n",
+        t->speed.data,
+        t->rpm.data,
+        t->power.data,
+        t->eff.data,
+        t->bat.data,
+        t->tens.data,
+        t->amp.data,
+        t->message.error_level );
+
+        if (len < 0 || len >= (int)sizeof(msg)) {
+                return;
+        }
+
+        int total = 0;
+        while (total < len) {
+                int n = write(fd, msg + total, len - total);
+                if (n < 0) {
+                        if (errno == EINTR) continue;
+                        if (errno == EAGAIN) continue;
+                        return;
+                }
+                total += n;
+        }
+}
+
 void calc_data(Tel *t, Bat_state *b, long now) {
         t->power.data = (int)(t->tens.data * t->amp.data);
         t->speed.data = (int)(t->rpm.data * 0.017f);
@@ -188,6 +255,7 @@ void calc_data(Tel *t, Bat_state *b, long now) {
 
         b->previous_ms = now;
         b->wh_used += (float)t->power.data * (float)dt / 3600000.0f;
+        if (b->wh_used > b->wh_total) b->wh_used = b->wh_total;
 }
 
 long now_ms(void) {
@@ -487,6 +555,7 @@ int main(int argc, char **argv) {
         int soc = 0;
         int use_uart = 0;
         int uart_fd = 0;
+        int is_receiver = 0;
 
         struct sockaddr_can addr;
         struct ifreq ifr;
@@ -496,7 +565,9 @@ int main(int argc, char **argv) {
 
         Bat_state bat_state = {0, 1000, 0};
 
-        while ((option = getopt(argc, argv, "d:hfcu")) !=-1) {
+        setlocale(LC_NUMERIC, "C");
+
+        while ((option = getopt(argc, argv, "d:hfcur")) !=-1) {
                 switch (option) {
                         case 'd' :
                                 delay = atoi(optarg);
@@ -513,8 +584,11 @@ int main(int argc, char **argv) {
                         case 'u' :
                                 use_uart = 1;
                                 break;
+                        case 'r' :
+                                is_receiver = 1;
+                                break;
                         case 'h' :
-                                printf("Usage: ./cocomobile-tui [-d int <ms multiplier>] [-h <help>] [-f <random data generation>] [-c <enable can>] [-u <enable uart connection>]\n");
+                                printf("Usage: ./cocomobile-tui [-d int <ms multiplier>] [-h <help>] [-f <random data generation>] [-c <enable can>] [-u <enable uart connection>] [-r <set for receiver (not for the car)>]\n");
                                 return(0);
                 }
         }
@@ -609,7 +683,7 @@ int main(int argc, char **argv) {
         tel.power    = (StInt){0   , 0    , 1300  , 4, 1, 2*y6 , 2*x3, y2     , 0     , NULL, "power (W)"          };
         tel.bat      = (StInt){0   , 0    , 100   , 3, 0, y4   , x3r , 0      , x-x3r , NULL, "batteries (%)"      };
         tel.eff      = (StFlt){0.0f, 0.0f , 100.0f, 5, 1, y4r  , x3r , y4     , x-x3r , NULL, "efficiency (Wh/Km)" };
-        tel.tens     = (StFlt){0.0f, 36.0f, 55.0f , 4, 1, y2r4 , x3r , y2     , x-x3r , NULL, "tension (V)"        };
+        tel.tens     = (StFlt){0.0f, 42.0f, 58.0f , 4, 1, y2r4 , x3r , y2     , x-x3r , NULL, "tension (V)"        };
         tel.amp      = (StFlt){0.0f, 0.0f , 30.0f , 4, 1, y2r4r, x3r , y-y2r4r, x-x3r , NULL, "intensity (A)"      };
         tel.message  = (StStr){0   , 0    ,               y6r  , 2*x3, y-y6r  , 0     , NULL, "warnings"          , {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}};
 
@@ -630,6 +704,7 @@ int main(int argc, char **argv) {
         bat_state.previous_ms = now;
 
         while(1) {
+                now = now_ms();
                 ch = tolower(getch());
                 switch (ch) {
                         case 'q' :
@@ -639,13 +714,15 @@ int main(int argc, char **argv) {
                                 if (fake_data) {
                                         get_fake_data(&tel);
                                 } else {
-                                        if (use_can) read_can(&tel, soc);
-                                        if (use_uart) read_uart(&tel, uart_fd, &uart_parser);
+                                        if (use_can  && !is_receiver) read_can(&tel, soc);
+                                        if (use_uart && !is_receiver) read_uart(&tel, uart_fd, &uart_parser);
+                                        if (use_uart && is_receiver) read_uart_receiver(&tel, uart_fd, &uart_parser);
                                 }
                                 break;
                 }
-                calc_data(&tel, &bat_state, now);
-                now = now_ms();
+
+                if (!is_receiver) calc_data(&tel, &bat_state, now);
+
                 if (now - t100 >= 100 * delay) {
                         win_int(&tel.speed, use_color);
                         win_int(&tel.rpm, use_color);
@@ -655,6 +732,9 @@ int main(int argc, char **argv) {
                         win_float(&tel.amp, use_color);
                         win_int(&tel.bat, use_color);
                         win_warn(&tel, use_color, now);
+
+                        if (use_uart && !is_receiver) write_uart(&tel, uart_fd);
+
                         t100 = now;
                 }
                 napms(10);
@@ -670,5 +750,6 @@ int main(int argc, char **argv) {
         delwin(tel.message.lwin);
         endwin();
         if (use_can) close(soc);
+        if (use_uart) close(uart_fd);
         return 0;
 }