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Fix some first connect EACCES errors on freshly plugged pm3

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This commit is contained in:
Philippe Teuwen 2024-08-12 19:07:32 +02:00
commit c91ca6c703
1 changed files with 8 additions and 1 deletions
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9
client/src/uart/uart_posix.c
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@ -44,6 +44,7 @@
#include "comms.h"
#include "ui.h"
#include "util_posix.h" // msleep
// Taken from https://github.com/unbit/uwsgi/commit/b608eb1772641d525bfde268fe9d6d8d0d5efde7
#ifndef SOL_TCP
@ -358,7 +359,13 @@ serial_port uart_open(const char *pcPortName, uint32_t speed, bool slient) {
free(prefix);
sp->fd = open(pcPortName, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
// Freshly available port can take a while before getting permission to access it. Up to 600ms on my machine...
for (uint8_t i =0; i < 10; i++) {
sp->fd = open(pcPortName, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
if (sp->fd != -1 || errno != EACCES)
break;
msleep(100);
}
if (sp->fd == -1) {
uart_close(sp);
return INVALID_SERIAL_PORT;