Merge pull request adafruit#9594 from jepler/state-machine-offset-pc

rp2pio: Add offset & pc (program counter) properties

Author: tannewt

ports/raspberrypi/bindings/rp2pio/StateMachine.c

@@ -813,6 +813,35 @@ MP_DEFINE_CONST_FUN_OBJ_1(rp2pio_statemachine_get_in_waiting_obj, rp2pio_statema
 MP_PROPERTY_GETTER(rp2pio_statemachine_in_waiting_obj,
     (mp_obj_t)&rp2pio_statemachine_get_in_waiting_obj);
 
+//|     offset: int
+//|     """The instruction offset where the program was actually loaded"""
+//|
+
+static mp_obj_t rp2pio_statemachine_obj_get_offset(mp_obj_t self_in) {
+    rp2pio_statemachine_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    check_for_deinit(self);
+    return MP_OBJ_NEW_SMALL_INT(common_hal_rp2pio_statemachine_get_offset(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(rp2pio_statemachine_get_offset_obj, rp2pio_statemachine_obj_get_offset);
+
+MP_PROPERTY_GETTER(rp2pio_statemachine_offset_obj,
+    (mp_obj_t)&rp2pio_statemachine_get_offset_obj);
+
+//|     pc: int
+//|     """The current program counter of the state machine"""
+//|
+
+static mp_obj_t rp2pio_statemachine_obj_get_pc(mp_obj_t self_in) {
+    rp2pio_statemachine_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    check_for_deinit(self);
+    return MP_OBJ_NEW_SMALL_INT(common_hal_rp2pio_statemachine_get_pc(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(rp2pio_statemachine_get_pc_obj, rp2pio_statemachine_obj_get_pc);
+
+MP_PROPERTY_GETTER(rp2pio_statemachine_pc_obj,
+    (mp_obj_t)&rp2pio_statemachine_get_pc_obj);
+
+
 static const mp_rom_map_elem_t rp2pio_statemachine_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&rp2pio_statemachine_deinit_obj) },
     { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
@@ -836,6 +865,9 @@ static const mp_rom_map_elem_t rp2pio_statemachine_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_rxstall), MP_ROM_PTR(&rp2pio_statemachine_rxstall_obj) },
     { MP_ROM_QSTR(MP_QSTR_txstall), MP_ROM_PTR(&rp2pio_statemachine_txstall_obj) },
     { MP_ROM_QSTR(MP_QSTR_in_waiting), MP_ROM_PTR(&rp2pio_statemachine_in_waiting_obj) },
+
+    { MP_ROM_QSTR(MP_QSTR_offset), MP_ROM_PTR(&rp2pio_statemachine_offset_obj) },
+    { MP_ROM_QSTR(MP_QSTR_pc), MP_ROM_PTR(&rp2pio_statemachine_pc_obj) },
 };
 static MP_DEFINE_CONST_DICT(rp2pio_statemachine_locals_dict, rp2pio_statemachine_locals_dict_table);
 

ports/raspberrypi/bindings/rp2pio/StateMachine.h

@@ -66,4 +66,7 @@ bool common_hal_rp2pio_statemachine_get_txstall(rp2pio_statemachine_obj_t *self)
 void common_hal_rp2pio_statemachine_clear_txstall(rp2pio_statemachine_obj_t *self);
 size_t common_hal_rp2pio_statemachine_get_in_waiting(rp2pio_statemachine_obj_t *self);
 
+int common_hal_rp2pio_statemachine_get_offset(rp2pio_statemachine_obj_t *self);
+int common_hal_rp2pio_statemachine_get_pc(rp2pio_statemachine_obj_t *self);
+
 void common_hal_rp2pio_statemachine_set_interrupt_handler(rp2pio_statemachine_obj_t *self, void (*handler)(void *), void *arg, int mask);

ports/raspberrypi/common-hal/rp2pio/StateMachine.c

@@ -1088,6 +1088,20 @@ int common_hal_rp2pio_statemachine_get_pending(rp2pio_statemachine_obj_t *self)
     return self->pending_buffers;
 }
 
+int common_hal_rp2pio_statemachine_get_offset(rp2pio_statemachine_obj_t *self) {
+    uint8_t pio_index = pio_get_index(self->pio);
+    uint8_t sm = self->state_machine;
+    uint8_t offset = _current_program_offset[pio_index][sm];
+    return offset;
+}
+
+int common_hal_rp2pio_statemachine_get_pc(rp2pio_statemachine_obj_t *self) {
+    uint8_t pio_index = pio_get_index(self->pio);
+    PIO pio = pio_instances[pio_index];
+    uint8_t sm = self->state_machine;
+    return pio_sm_get_pc(pio, sm);
+}
+
 // Use a compile-time constant for MP_REGISTER_POINTER so the preprocessor will
 // not split the expansion across multiple lines.
 MP_REGISTER_ROOT_POINTER(mp_obj_t background_pio[enum_NUM_DMA_CHANNELS]);