djsundog
/
circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

extmod/utime_mphal: ticks_diff/ticks_add: Don't hardcode 32-bit types. 

Use normal mp_int_t/mp_uint_t types, algorithms (hm, formulas) can work
with any type width.
This commit is contained in:
Paul Sokolovsky 2016-11-03 23:54:16 +03:00
parent 3272afe57f
commit 9b345a9e48
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
extmod/utime_mphal.c
View File

@ -87,11 +87,11 @@ MP_DEFINE_CONST_FUN_OBJ_0(mp_utime_ticks_cpu_obj, time_ticks_cpu);
STATIC mp_obj_t time_ticks_diff(mp_obj_t end_in, mp_obj_t start_in) {
// we assume that the arguments come from ticks_xx so are small ints
uint32_t start = MP_OBJ_SMALL_INT_VALUE(start_in);
uint32_t end = MP_OBJ_SMALL_INT_VALUE(end_in);
mp_uint_t start = MP_OBJ_SMALL_INT_VALUE(start_in);
mp_uint_t end = MP_OBJ_SMALL_INT_VALUE(end_in);
// Optimized formula avoiding if conditions. We adjust difference "forward",
// wrap it around and adjust back.
int32_t diff = ((end - start + MICROPY_PY_UTIME_TICKS_PERIOD / 2) & (MICROPY_PY_UTIME_TICKS_PERIOD - 1))
mp_int_t diff = ((end - start + MICROPY_PY_UTIME_TICKS_PERIOD / 2) & (MICROPY_PY_UTIME_TICKS_PERIOD - 1))
- MICROPY_PY_UTIME_TICKS_PERIOD / 2;
return MP_OBJ_NEW_SMALL_INT(diff);
}
@ -99,8 +99,8 @@ MP_DEFINE_CONST_FUN_OBJ_2(mp_utime_ticks_diff_obj, time_ticks_diff);
STATIC mp_obj_t time_ticks_add(mp_obj_t ticks_in, mp_obj_t delta_in) {
// we assume that first argument come from ticks_xx so is small int
uint32_t ticks = MP_OBJ_SMALL_INT_VALUE(ticks_in);
uint32_t delta = (uint32_t)mp_obj_get_int(delta_in);
mp_uint_t ticks = MP_OBJ_SMALL_INT_VALUE(ticks_in);
mp_uint_t delta = mp_obj_get_int(delta_in);
return MP_OBJ_NEW_SMALL_INT((ticks + delta) & (MICROPY_PY_UTIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_utime_ticks_add_obj, time_ticks_add);