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Code Issues Releases Activity

added logging to inform user of 1s retry if set_direction fails on the first try, updating to v0.7.1

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This commit is contained in:
Robert Wolterman
2017-11-12 08:06:35 -06:00
parent 906beb0257
commit 84df4376f8
6 changed files with 33 additions and 15 deletions
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5
source/event_gpio.c
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@ -385,10 +385,15 @@ int gpio_set_direction(int gpio, unsigned int in_flag)
snprintf(filename, sizeof(filename), "/sys/class/gpio/gpio%d/direction", gpio); BUF2SMALL(filename);
if ((fd = open(filename, O_WRONLY)) < 0) {
// NOTIFY THAT WE'RE GOING TO SLEEP AND RETRY
char err[256];
snprintf(err, sizeof(err), "gpio_set_direction: could not open '%s', sleeping for 1 second and retrying", filename);
add_error_msg(err);
// if called as non-root, udev may need time to adjust file
// permissions after setting up gpio
sleep(1);
// TRY AGAIN AND IF THIS TIME FAILS, KICK OUT
if ((fd = open(filename, O_WRONLY)) < 0) {
char err[256];
snprintf(err, sizeof(err), "gpio_set_direction: could not open '%s' (%s)", filename, strerror(errno));