1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/*
* Copyright (c) 2022 OpenLuat & AirM2M
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "user.h"
void RNG_Init(void)
{
TRNG->RNG_ANA = 0;
TRNG->RNG_CSR = 0;
}
/**
* @brief 获取随机数
*
* @param Buf，一次获取4个32bit数据
*/
void RNG_GetData(uint32_t Buf[4])
{
if (TRNG->RNG_CSR & TRNG_RNG_CSR_S128_TRNG0_Mask)
{
;
}
else
{
TRNG->RNG_CSR = 0;
while(!(TRNG->RNG_CSR & TRNG_RNG_CSR_S128_TRNG0_Mask)){;}
}
Buf[0] = TRNG->RNG_DATA[0];
Buf[1] = TRNG->RNG_DATA[0];
Buf[2] = TRNG->RNG_DATA[0];
Buf[3] = TRNG->RNG_DATA[0];
TRNG->RNG_CSR = 0;
}
|
