URL
https://opencores.org/ocsvn/neorv32/neorv32/trunk
Subversion Repositories neorv32
Compare Revisions
- This comparison shows the changes necessary to convert path
/neorv32/trunk/sw/example/demo_trng
- from Rev 22 to Rev 23
- ↔ Reverse comparison
Rev 22 → Rev 23
/main.c
64,8 → 64,9
uint8_t lucky_numbers_5of50[5]; |
uint8_t lucky_numbers_2of10[2]; |
|
uint8_t i, j, tmp; |
uint16_t trng_data; |
int err; |
uint8_t i, j, probe; |
uint8_t trng_data; |
unsigned int num_samples; |
|
// check if UART unit is implemented at all |
73,7 → 74,6
return 0; |
} |
|
|
// capture all exceptions and give debug info via UART |
// this is not required, but keeps us safe |
neorv32_rte_setup(); |
91,11 → 91,8
return 0; |
} |
|
// configure TRNG with defaul GARO tap mask |
neorv32_uart_printf("Configuring TRNG...\n"); |
uint16_t trng_tap_config = neorv32_trng_find_tap_mask(); |
neorv32_uart_printf("TRNG: Using tap mask: 0x%x ", (uint32_t)trng_tap_config); |
neorv32_trng_setup(trng_tap_config); |
// enable TRNG |
neorv32_trng_enable(); |
|
while(1) { |
|
113,11 → 110,12
if (cmd == 'n') { |
num_samples = 0; |
while(1) { |
if (neorv32_trng_get(&trng_data)) { |
neorv32_uart_printf("\nTRNG error!\n"); |
err = neorv32_trng_get(&trng_data); |
if (err) { |
neorv32_uart_printf("\nTRNG error (%i)!\n", err); |
break; |
} |
neorv32_uart_printf("%u ", (uint32_t)(trng_data & 0xFF)); |
neorv32_uart_printf("%u ", (uint32_t)(trng_data)); |
num_samples++; |
if (neorv32_uart_char_received()) { // abort when key pressed |
neorv32_uart_printf("\nPrinted samples: %u", num_samples); |
128,7 → 126,7
|
// print lucky numbers |
if (cmd == 'l') { |
// reset array |
// reset arrays |
for (i=0; i<5; i++) { |
lucky_numbers_5of50[i] = 0; |
} |
138,45 → 136,57
// get numbers |
i = 0; |
while (i<5) { |
if (neorv32_trng_get(&trng_data)) { |
neorv32_uart_printf("\nTRNG error!\n"); |
err = neorv32_trng_get(&trng_data); |
if (err) { |
neorv32_uart_printf("\nTRNG error (%i)!\n", err); |
break; |
} |
// valid range? |
tmp = (uint8_t)(trng_data & 0xff); |
if ((tmp == 0) || (tmp > 50)) { |
if ((trng_data == 0) || (trng_data > 50)) { |
continue; |
} |
// already sampled? |
probe = 0; |
for (j=0; j<5; j++) { |
if (lucky_numbers_5of50[j] == tmp) { |
continue; |
if (lucky_numbers_5of50[j] == trng_data) { |
probe++; |
} |
} |
lucky_numbers_5of50[i] = tmp; |
i++; |
if (probe) { |
continue; |
} |
else { |
lucky_numbers_5of50[i] = trng_data; |
i++; |
} |
} |
|
// get numbers part 2 |
i = 0; |
while (i<2) { |
if (neorv32_trng_get(&trng_data)) { |
neorv32_uart_printf("\nTRNG error!\n"); |
err = neorv32_trng_get(&trng_data); |
if (err) { |
neorv32_uart_printf("\nTRNG error (%i)!\n", err); |
break; |
} |
// valid range? |
tmp = (uint8_t)(trng_data & 0xff); |
if ((tmp == 0) || (tmp > 10)) { |
if ((trng_data == 0) || (trng_data > 10)) { |
continue; |
} |
// already sampled? |
probe = 0; |
for (j=0; j<2; j++) { |
if (lucky_numbers_2of10[j] == tmp) { |
continue; |
if (lucky_numbers_2of10[j] == trng_data) { |
probe++; |
} |
} |
lucky_numbers_2of10[i] = tmp; |
i++; |
if (probe) { |
continue; |
} |
else { |
lucky_numbers_2of10[i] = trng_data; |
i++; |
} |
} |
|
// output |