def change_event_cb(e):
obj = e.get_target()
row = lv.C_Pointer()
col = lv.C_Pointer()
table.get_selected_cell(row, col)
# print("row: ",row.uint_val)
chk = table.has_cell_ctrl(row.uint_val, 0, lv.table.CELL_CTRL.CUSTOM_1)
if chk:
table.clear_cell_ctrl(row.uint_val, 0, lv.table.CELL_CTRL.CUSTOM_1)
else:
table.add_cell_ctrl(row.uint_val, 0, lv.table.CELL_CTRL.CUSTOM_1)
def aligned_buf(buf, alignment):
"""Return an aligned buffer
Given a buffer, return a memory view within that buffer, which starts
at an aligned address in RAM.
The returned memory view is possibly smaller.
!! You must keep a reference to the original buffer to prevent the
garbage collector from collecting the aligned view!
Arguments:
buf -- An object that implements buffer protocol
alignment -- Integer value
"""
p = lv.C_Pointer()
p.ptr_val = buf
if not buf_fmt: return None
addr = ustruct.unpack(buf_fmt, p.ptr_val)[0]
mod = addr % alignment
offset = alignment - mod if mod != 0 else 0
if len(buf) <= offset: return None
addr += offset
p = lv.C_Pointer.cast(ustruct.pack(buf_fmt, addr))
return p.ptr_val.__dereference__(len(buf) - offset)