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stm: Add udelay (delay in microseconds).

This commit is contained in:
Damien George 2014-03-08 15:17:10 +00:00
parent cd000645f8
commit 360b25ab0f
2 changed files with 12 additions and 0 deletions
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11
stm/main.c
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@ -110,6 +110,16 @@ mp_obj_t pyb_delay(mp_obj_t count) {
return mp_const_none;
}
mp_obj_t pyb_udelay(mp_obj_t usec) {
uint32_t count = 0;
const uint32_t utime = (168 * mp_obj_get_int(usec) / 5);
for (;;) {
if (++count > utime) {
return mp_const_none;
}
}
}
void fatality(void) {
led_state(PYB_LED_R1, 1);
led_state(PYB_LED_G1, 1);
@ -415,6 +425,7 @@ soft_reset:
rt_store_attr(m, MP_QSTR_main, rt_make_function_n(1, pyb_main));
rt_store_attr(m, MP_QSTR_sync, rt_make_function_n(0, pyb_sync));
rt_store_attr(m, MP_QSTR_delay, rt_make_function_n(1, pyb_delay));
rt_store_attr(m, MP_QSTR_udelay, rt_make_function_n(1, pyb_udelay));
#if MICROPY_HW_HAS_SWITCH
rt_store_attr(m, MP_QSTR_switch, (mp_obj_t)&pyb_switch_obj);
#endif

1
stm/qstrdefsport.h
View File

@ -11,6 +11,7 @@ Q(main)
Q(sync)
Q(gc)
Q(delay)
Q(udelay)
Q(switch)
Q(SW)
Q(servo)