static int config_channel(struct timer *tr, char **arg_text)
{
char *which_text = get_arg(arg_text);
char *value_text = get_arg(arg_text);
address_t which;
address_t value;
if (!(which_text && value_text)) {
printc_err("timer: config: expected channel and value\n");
return -1;
}
if (expr_eval(which_text, &which) < 0) {
printc_err("timer: can't parse channel number: %s\n",
which_text);
return -1;
}
if (expr_eval(value_text, &value) < 0) {
printc_err("timer: can't parse channel value: %s\n",
value_text);
return -1;
}
if (which > tr->size) {
printc_err("timer: invalid channel number: %d\n", which);
return -1;
}
trigger_capture(tr, which, tr->ctls[which] & CCI, value);
return 0;
}
static int timer_write(struct simio_device *dev,
address_t addr, uint16_t data)
{
struct timer *tr = (struct timer *)dev;
if (addr == tr->base_addr) {
tr->tactl = data & ~(TACLR | 0x08);
if (data & TACLR)
tr->tar = 0;
return 0;
}
if (addr == tr->base_addr + 0x10) {
tr->tar = data & tar_mask(tr);
return 0;
}
if (addr >= tr->base_addr + 2 &&
addr < tr->base_addr + (tr->size << 1) + 2) {
int index = ((addr & 0xf) - 2) >> 1;
uint16_t oldval = tr->ctls[index];
uint16_t mask;
if (tr->timer_type == TIMER_TYPE_A)
mask = 0x0608;
if (tr->timer_type == TIMER_TYPE_B)
mask = 0x0008;
tr->ctls[index] = (data & ~mask) | (oldval & mask);
/* Check capture initiated by Software */
if ((data & (CAP | CCIS1)) == (CAP | CCIS1))
trigger_capture(tr, index, oldval & CCI, data & CCIS0);
return 0;
}
static PyObject *
chameleon_trigger(PyObject *self, PyObject *args)
{
int handle = -1;
int status;
struct chameleon_camera* cam = NULL;
bool continuous;
PyObject *continuous_obj;
if (!PyArg_ParseTuple(args, "iO", &handle, &continuous_obj))
return NULL;
continuous = PyObject_IsTrue(continuous_obj);
if (handle >= 0 && handle < NUM_CAMERA_HANDLES && cameras[handle]) {
cam = cameras[handle];
} else {
PyErr_SetString(ChameleonError, "Invalid handle");
return NULL;
}
Py_BEGIN_ALLOW_THREADS;
status = trigger_capture(cam, shutters[handle], continuous);
Py_END_ALLOW_THREADS;
if (status < 0) {
PyErr_SetString(ChameleonError, "Failed to capture");
return NULL;
}
Py_RETURN_NONE;
}
