skip uart_read logic if empty

2026-04-27 13:54:29 +02:00 · 2026-04-27 13:54:29 +02:00 · 57b9a1036c
commit 57b9a1036c
parent b4dfc516fa
1 changed files with 3 additions and 0 deletions
--- a/src/main.c
+++ b/src/main.c
@ -138,6 +138,9 @@ void read_can(Tel *t, int soc) {
 void read_uart(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];