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PIGPIO user permission patch

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Пелипенко Иван
2020-05-22 21:58:05 +03:00
parent 299d1e1708
commit e04e6199e3
1 changed files with 13 additions and 1 deletions
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14
src_main/io_devices/pigpio.cpp
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@@ -89,13 +89,25 @@ PIString PIGPIO::GPIOName(int gpio_num) {
void PIGPIO::exportGPIO(int gpio_num) { void PIGPIO::exportGPIO(int gpio_num) {
#ifdef GPIO_SYS_CLASS #ifdef GPIO_SYS_CLASS
int fd = ::open(("/sys/class/gpio/" + GPIOName(gpio_num) + "/value").dataAscii(), O_RDONLY); PIString valfile = "/sys/class/gpio/" + GPIOName(gpio_num) + "/value";
int fd = ::open(valfile.dataAscii(), O_RDONLY);
if (fd != -1) { if (fd != -1) {
::close(fd); ::close(fd);
return; return;
} }
int ret = 0; int ret = 0;
ret = system(PIString("echo " + PIString::fromNumber(gpio_num) + " >> /sys/class/gpio/export").dataAscii()); ret = system(PIString("echo " + PIString::fromNumber(gpio_num) + " >> /sys/class/gpio/export").dataAscii());
if (ret == 0) {
PITimeMeasurer tm;
while (tm.elapsed_s() < 1.) {
fd = ::open(valfile.dataAscii(), O_RDWR);
if (fd != -1) {
::close(fd);
return;
}
piMSleep(1);
}
}
#endif #endif
} }