1 /******************************************************************************
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41 */
42
43 /** \file rng.c
44 **
45 ** Common API of rng.
46 ** @link flashGroup Some description @endlink
47 **
48 ** - 2018-05-08
49 **
50 ******************************************************************************/
51
52 /*******************************************************************************
53 * Include files
54 ******************************************************************************/
55 #include "rng.h"
56 /**
57 *******************************************************************************
58 ** \addtogroup FlashGroup
59 ******************************************************************************/
60 //@{
61
62 /*******************************************************************************
63 * Local pre-processor symbols/macros ('#define')
64 ******************************************************************************/
65
66 /*******************************************************************************
67 * Global variable definitions (declared in header file with 'extern')
68 ******************************************************************************/
69
70 /*******************************************************************************
71 * Local type definitions ('typedef')
72 ******************************************************************************/
73
74 /*******************************************************************************
75 * Local variable definitions ('static')
76 ******************************************************************************/
77
78 /*******************************************************************************
79 * Local function prototypes ('static')
80 ******************************************************************************/
81
82 /*******************************************************************************
83 * Function implementation - global ('extern') and local ('static')
84 ******************************************************************************/
85
86 /**
87 *****************************************************************************
88 ** \brief 随机数初始化(上电第一次生成随机数）
89 **
90 **
91 ** \retval TRUE or FALSE
92 *****************************************************************************/
Rng_Init(void)93 en_result_t Rng_Init(void)
94 {
95 //==>>生成64bits随机数（上电第一次）
96 M0P_RNG->CR_f.RNGCIR_EN = 1;
97 //模式配置0
98 M0P_RNG->MODE_f.LOAD = 1;
99 M0P_RNG->MODE_f.FDBK = 1;
100 M0P_RNG->MODE_f.CNT = 6;
101 //生成随机数0
102 M0P_RNG->CR_f.RNG_RUN = 1;
103 while(M0P_RNG->CR_f.RNG_RUN)
104 {
105 ;
106 }
107
108 //模式配置1
109 M0P_RNG->MODE_f.LOAD = 0;
110 M0P_RNG->MODE_f.FDBK = 0;
111 M0P_RNG->MODE_f.CNT = 4;
112 //生成随机数1
113 M0P_RNG->CR_f.RNG_RUN = 1;
114 while(M0P_RNG->CR_f.RNG_RUN)
115 {
116 ;
117 }
118
119 //关闭随机源电路，节省功耗
120 M0P_RNG->CR_f.RNGCIR_EN = 0;
121
122 return Ok;
123 }
124
125 /**
126 *****************************************************************************
127 ** \brief 生成随机数（非上电第一次生成随机数）
128 **
129 **
130 ** \retval TRUE or FALSE
131 *****************************************************************************/
Rng_Generate(void)132 en_result_t Rng_Generate(void)
133 {
134 //==>>生成64bits随机数（非上电第一次生成）
135 M0P_RNG->CR_f.RNGCIR_EN = 1;
136
137 //模式配置0
138 M0P_RNG->MODE_f.LOAD = 0;
139 M0P_RNG->MODE_f.FDBK = 1;
140 M0P_RNG->MODE_f.CNT = 6;
141 //生成随机数0
142 M0P_RNG->CR_f.RNG_RUN = 1;
143 while(M0P_RNG->CR_f.RNG_RUN)
144 {
145 ;
146 }
147
148 //模式配置1
149 M0P_RNG->MODE_f.FDBK = 0;
150 M0P_RNG->MODE_f.CNT = 4;
151 M0P_RNG->MODE_f.CNT = 4;
152 //生成随机数1
153 M0P_RNG->CR_f.RNG_RUN = 1;
154 while(M0P_RNG->CR_f.RNG_RUN)
155 {
156 ;
157 }
158
159 //关闭随机源电路，节省功耗
160 M0P_RNG->CR_f.RNGCIR_EN = 0;
161
162 return Ok;
163 }
164
165 /**
166 *****************************************************************************
167 ** \brief 随机数获取
168 **
169 ** \retval data0
170 *****************************************************************************/
Rng_GetData0(void)171 uint32_t Rng_GetData0(void)
172 {
173 return M0P_RNG->DATA0;
174 }
175
176 /**
177 *****************************************************************************
178 ** \brief 随机数获取
179 **
180 ** \retval data1
181 *****************************************************************************/
Rng_GetData1(void)182 uint32_t Rng_GetData1(void)
183 {
184 return M0P_RNG->DATA1;
185 }
186
187 //@} // RngGroup
188
189 /*******************************************************************************
190 * EOF (not truncated)
191 ******************************************************************************/
192