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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 62 to Rev 65
    ↔ Reverse comparison
  •

Rev 62 → Rev 65

/main.c
66,7 → 66,7
int main(void) {
 
// check if UART unit is implemented at all
if (neorv32_uart_available() == 0) {
if (neorv32_uart0_available() == 0) {
return 1;
}
 
76,17 → 76,17
 
 
// init UART at default baud rate, no parity bits, ho hw flow control
neorv32_uart_setup(BAUD_RATE, PARITY_NONE, FLOW_CONTROL_NONE);
neorv32_uart0_setup(BAUD_RATE, PARITY_NONE, FLOW_CONTROL_NONE);
 
// check available hardware extensions and compare with compiler flags
neorv32_rte_check_isa(0); // silent = 0 -> show message if isa mismatch
 
// intro
neorv32_uart_printf("\n--- TRNG Demo ---\n\n");
neorv32_uart0_printf("\n--- TRNG Demo ---\n\n");
 
// check if TRNG unit is implemented at all
if (neorv32_trng_available() == 0) {
neorv32_uart_printf("No TRNG implemented.");
neorv32_uart0_printf("No TRNG implemented.");
return 1;
}
 
96,14 → 96,14
while(1) {
 
// main menu
neorv32_uart_printf("\nCommands:\n"
neorv32_uart0_printf("\nCommands:\n"
" n: Print 8-bit random numbers (abort by pressing any key)\n"
" h: Generate and print histogram\n");
 
neorv32_uart_printf("CMD:> ");
char cmd = neorv32_uart_getc();
neorv32_uart_putc(cmd); // echo
neorv32_uart_printf("\n");
neorv32_uart0_printf("CMD:> ");
char cmd = neorv32_uart0_getc();
neorv32_uart0_putc(cmd); // echo
neorv32_uart0_printf("\n");
 
if (cmd == 'n') {
print_random_data();
112,7 → 112,7
generate_histogram();
}
else {
neorv32_uart_printf("Invalid command.\n");
neorv32_uart0_printf("Invalid command.\n");
}
}
 
132,16 → 132,16
while(1) {
err = neorv32_trng_get(&trng_data);
if (err) {
neorv32_uart_printf("\nTRNG error!\n");
neorv32_uart0_printf("\nTRNG error!\n");
break;
}
neorv32_uart_printf("%u ", (uint32_t)(trng_data));
neorv32_uart0_printf("%u ", (uint32_t)(trng_data));
num_samples++;
if (neorv32_uart_char_received()) { // abort when key pressed
if (neorv32_uart0_char_received()) { // abort when key pressed
break;
}
}
neorv32_uart_printf("\nPrinted samples: %u\n", num_samples);
neorv32_uart0_printf("\nPrinted samples: %u\n", num_samples);
}
 
 
156,10 → 156,10
int err = 0;
uint8_t trng_data;
 
neorv32_uart_printf("Press any key to start.\n");
neorv32_uart0_printf("Press any key to start.\n");
 
while(neorv32_uart_char_received() == 0);
neorv32_uart_printf("Sampling... Press any key to stop.\n");
while(neorv32_uart0_char_received() == 0);
neorv32_uart0_printf("Sampling... Press any key to stop.\n");
 
// clear histogram
for (i=0; i<256; i++) {
174,11 → 174,11
cnt++;
 
if (err) {
neorv32_uart_printf("\nTRNG error!\n");
neorv32_uart0_printf("\nTRNG error!\n");
break;
}
 
if (neorv32_uart_char_received()) { // abort when key pressed
if (neorv32_uart0_char_received()) { // abort when key pressed
break;
}
 
188,12 → 188,12
}
 
// print histogram
neorv32_uart_printf("Histogram [random data value] : [# occurences]\n");
neorv32_uart0_printf("Histogram [random data value] : [# occurences]\n");
for (i=0; i<256; i++) {
neorv32_uart_printf("%u: %u\n", (uint32_t)i, hist[i]);
neorv32_uart0_printf("%u: %u\n", (uint32_t)i, hist[i]);
}
 
neorv32_uart_printf("\nSamples: %u\n", cnt);
neorv32_uart0_printf("\nSamples: %u\n", cnt);
 
// average
uint64_t average = 0;
201,5 → 201,13
average += (uint64_t)hist[i] * i;
}
average = average / ((uint64_t)cnt);
neorv32_uart_printf("Average value: %u\n", (uint32_t)average);
neorv32_uart0_printf("Average value: %u ", (uint32_t)average);
 
if (((uint8_t)average) == ((uint8_t)(255/2))) {
neorv32_uart0_printf("%c[1m[TEST OK]%c[0m\n", 27, 27);
}
else {
neorv32_uart0_printf("%c[1m[TEST FAILED]%c[0m\n", 27, 27);
}
 
}

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