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Merge pull request #967 from arturo182/nrf_os 

nrf: Rewrite the os common-hal using nrfx
This commit is contained in:
Scott Shawcroft 2018-06-28 13:55:34 -07:00 committed by GitHub
parent a0425d9134 6e6a500801
commit ae82a93b56
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 15 deletions
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22
ports/nrf/common-hal/os/__init__.c
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@ -28,13 +28,12 @@
#include "py/mpconfig.h"
#include "py/objstr.h"
#include "py/objtuple.h"
#include "py/qstr.h"
#ifdef BLUETOOTH_SD
#include "nrf_sdm.h"
#endif
#include "nrf.h"
#include "nrf_rng.h"
STATIC const qstr os_uname_info_fields[] = {
MP_QSTR_sysname, MP_QSTR_nodename,
@ -47,7 +46,6 @@ STATIC const MP_DEFINE_STR_OBJ(os_uname_info_release_obj, MICROPY_VERSION_STRING
STATIC const MP_DEFINE_STR_OBJ(os_uname_info_version_obj, MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE);
STATIC const MP_DEFINE_STR_OBJ(os_uname_info_machine_obj, MICROPY_HW_BOARD_NAME " with " MICROPY_HW_MCU_NAME);
STATIC MP_DEFINE_ATTRTUPLE(
os_uname_info_obj,
os_uname_info_fields,
@ -68,23 +66,21 @@ bool common_hal_os_urandom(uint8_t* buffer, uint32_t length) {
uint8_t sd_en = 0;
(void) sd_softdevice_is_enabled(&sd_en);
if (sd_en) {
if (sd_en)
return NRF_SUCCESS == sd_rand_application_vector_get(buffer, length);
}
#endif
NRF_RNG->EVENTS_VALRDY = 0;
NRF_RNG->TASKS_START = 1;
nrf_rng_event_clear(NRF_RNG_EVENT_VALRDY);
nrf_rng_task_trigger(NRF_RNG_TASK_START);
for (uint32_t i = 0; i < length; i++) {
while (NRF_RNG->EVENTS_VALRDY == 0) {
;
}
NRF_RNG->EVENTS_VALRDY = 0;
buffer[i] = (uint8_t) NRF_RNG->VALUE;
while (nrf_rng_event_get(NRF_RNG_EVENT_VALRDY) == 0);
nrf_rng_event_clear(NRF_RNG_EVENT_VALRDY);
buffer[i] = nrf_rng_random_value_get();
}
NRF_RNG->TASKS_STOP = 1;
nrf_rng_task_trigger(NRF_RNG_TASK_STOP);
return true;
}