adafruit-mirror/Adafruit_Blinka_Raspberry_Pi5_Piomatter
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Actually report errors in pio_sm_xfer_data

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This commit is contained in:
Jeff Epler 2025-03-17 09:03:44 -05:00
parent b19b6c7cb0
commit fc7295eb74
2 changed files with 25 additions and 4 deletions
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20
src/include/piomatter/piomatter.h
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@ -26,7 +26,7 @@ struct piomatter_base {
piomatter_base &operator=(const piomatter_base &) = delete;
virtual ~piomatter_base() {}
virtual void show() = 0;
virtual int show() = 0;
double fps;
};
@ -48,7 +48,11 @@ struct piomatter : piomatter_base {
show();
}
void show() override {
int show() override {
int err = pending_error_errno.exchange(0); // we're handling this error
if (err != 0) {
return err;
}
int buffer_idx = manager.get_free_buffer();
auto &bufseq = buffers[buffer_idx];
bufseq.resize(geometry.schedules.size());
@ -61,6 +65,7 @@ struct piomatter : piomatter_base {
old_active_time = geometry.schedules[i].back().active_time;
}
manager.put_filled_buffer(buffer_idx);
return 0;
}
~piomatter() {
@ -174,7 +179,15 @@ struct piomatter : piomatter_base {
const auto &data = cur_buf[seq_idx];
auto datasize = sizeof(uint32_t) * data.size();
auto dataptr = const_cast<uint32_t *>(&data[0]);
pio_sm_xfer_data(pio, sm, PIO_DIR_TO_SM, datasize, dataptr);
// returns err = rp1_ioctl.... which seems to be a negative
// errno value
int r =
pio_sm_xfer_data(pio, sm, PIO_DIR_TO_SM, datasize, dataptr);
if (r != 0) {
pending_error_errno.store(-r);
printf("xfer_data() returned error %d (%s)\n", r,
strerror(-r));
}
t1 = monotonicns64();
if (t0 != t1) {
fps = 1e9 / (t1 - t0);
@ -194,6 +207,7 @@ struct piomatter : piomatter_base {
matrix_geometry geometry;
colorspace converter;
std::thread blitter_thread;
std::atomic<int> pending_error_errno;
};
} // namespace piomatter

9
src/pymain.cpp
View file

@ -18,7 +18,14 @@ struct PyPiomatter {
py::buffer buffer;
std::unique_ptr<piomatter::piomatter_base> matter;
void show() { matter->show(); }
void show() {
int err = matter->show();
if (err != 0) {
errno = err;
PyErr_SetFromErrno(PyExc_OSError);
throw py::error_already_set();
}
}
double fps() const { return matter->fps; }
};