// python function cleanup(channel)
static PyObject *py_cleanup(PyObject *self, PyObject *args, PyObject *kwargs)
{
char key[8];
char *channel;
static char *kwlist[] = {"channel", NULL};
clear_error_msg();
// Channel is optional
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s", kwlist, &channel)) {
return NULL;
}
// The !channel fixes issues #50
if (channel == NULL || strcmp(channel, "\0") == 0) {
softpwm_cleanup();
} else {
if (!get_key(channel, key)) {
softpwm_cleanup();
}
softpwm_disable(key);
}
Py_RETURN_NONE;
}
static void power_down(uint8_t wdto)
{
#ifdef PROTOCOL_LUFA
if (USB_DeviceState == DEVICE_STATE_Configured) return;
#endif
wdt_timeout = wdto;
// Watchdog Interrupt Mode
wdt_intr_enable(wdto);
// TODO: more power saving
// See PicoPower application note
// - I/O port input with pullup
// - prescale clock
// - BOD disable
// - Power Reduction Register PRR
#ifdef SUSPEND_ACTION
suspend_power_down_action();
#endif
#ifdef SOFTPWM_LED_ENABLE
softpwm_disable();
#endif
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_enable();
sei();
sleep_cpu();
sleep_disable();
// Disable watchdog after sleep
wdt_disable();
}
// python function stop(channel)
static PyObject *py_stop_channel(PyObject *self, PyObject *args, PyObject *kwargs)
{
char key[8];
char *channel;
int gpio;
int allowed = -1;
clear_error_msg();
if (!PyArg_ParseTuple(args, "s", &channel))
return NULL;
if (!get_key(channel, key)) {
PyErr_SetString(PyExc_ValueError, "Invalid PWM key or name.");
return NULL;
}
// check to ensure gpio is one of the allowed pins
// Not protecting the call as if the get_key() fails, we won't make it here
get_gpio_number(channel, &gpio);
// Check to see if GPIO is allowed on the hardware
// A 1 means we're good to go
allowed = gpio_allowed(gpio);
if (allowed == -1) {
char err[2000];
snprintf(err, sizeof(err), "Error determining hardware. (%s)", get_error_msg());
PyErr_SetString(PyExc_ValueError, err);
return NULL;
} else if (allowed == 0) {
char err[2000];
snprintf(err, sizeof(err), "GPIO %d not available on current Hardware", gpio);
PyErr_SetString(PyExc_ValueError, err);
return NULL;
}
softpwm_disable(key);
Py_RETURN_NONE;
}
void softpwm_cleanup(void)
{
while (exported_pwms != NULL) {
softpwm_disable(exported_pwms->key);
}
}
