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Code Issues Releases Activity

Updating setup to allow for repeated calls on a pin. Not totally sold on this, but it work and is what RPi.GPIO does. This will close #63

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This commit is contained in:
Robert Wolterman
2017-03-20 23:06:09 -05:00
parent 38a34e7edf
commit 2b48571ee3
7 changed files with 31 additions and 4 deletions
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7
source/py_gpio.c
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@ -215,11 +215,16 @@ static PyObject *py_setup_channel(PyObject *self, PyObject *args, PyObject *kwar
init_r8_gpio_mem();
}
if (gpio_export(gpio) < 0) {
int exprtn = gpio_export(gpio);
if (exprtn == -1) {
char err[2000];
snprintf(err, sizeof(err), "Error setting up channel %s, maybe already exported? (%s)", channel, get_error_msg());
PyErr_SetString(PyExc_RuntimeError, err);
return NULL;
} else if (exprtn == -2 && gpio_warnings) {
char warn[2000];
snprintf(warn, sizeof(warn), "Channel %s may already be exported, proceeding with rest of setup", channel);
PyErr_WarnEx(PyExc_Warning, warn, 1);
}
if (gpio_set_direction(gpio, direction) < 0) {
char err[2000];