Th3maz1ng/W801_SDK_dev_env
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Implemented a random number generating function which returns a 6 digit random number

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This commit is contained in:
Th3maz1ng 2023-04-23 20:29:42 +02:00
parent 082c2c6a6c
commit 18b602bbca
2 changed files with 23 additions and 0 deletions
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21
app/app_lib/app_utils.c
View File

@ -1,4 +1,6 @@
#include "app_utils.h"
#include <math.h>
#include "wm_crypto_hard.h"
static uint32_t millis_cnt = 0;
@ -52,4 +54,23 @@ void ms_delay(uint32_t ms)
while(tls_timer_read(timer_id) < ms);
tls_timer_destroy(timer_id);
}
uint32_t random_gen_6_digit(void)
{
unsigned char random_buf[6] = {0};
uint32_t output_num = 0;
tls_crypto_random_init(0x19031998, CRYPTO_RNG_SWITCH_16);
tls_crypto_random_bytes(random_buf, sizeof random_buf);
tls_crypto_random_stop();
for(uint8_t i = 0; i < sizeof random_buf; i++)
{
// Ensures the last digit is not 0
if(i == (sizeof random_buf) - 1 && random_buf[i] % 10 == 0)random_buf[i]++;
output_num += (random_buf[i] % 10) * pow(10, i);
}
return output_num;
}

2
app/app_lib/app_utils.h
View File

@ -11,4 +11,6 @@ void us_delay(uint32_t us);
void ms_delay(uint32_t ms);
uint32_t random_gen_6_digit(void);
#endif //APP_UTILS_H