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[sw] update TRNG programs

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This commit is contained in:
stnolting 2024-12-14 16:15:11 +01:00
parent b19aa98d30
commit 30a104a4da
3 changed files with 8 additions and 32 deletions
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8
sw/example/demo_trng/main.c
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@ -72,8 +72,9 @@ int main(void) {
// enable TRNG
neorv32_uart0_printf("\nTRNG FIFO depth: %i\n", neorv32_trng_get_fifo_depth());
neorv32_uart0_printf("Starting TRNG...\n");
neorv32_trng_enable(0);
neorv32_trng_enable();
neorv32_cpu_delay_ms(100); // TRNG "warm up"
neorv32_trng_fifo_clear(); // discard "warm-up" data
while(1) {
@ -346,14 +347,13 @@ void compute_rate(void) {
const uint32_t n_samples = 16*1024;
uint32_t i;
uint32_t tmp;
uint8_t data;
uint32_t cycles = neorv32_cpu_csr_read(CSR_CYCLE);
i = 0;
while (i<n_samples) {
tmp = NEORV32_TRNG->CTRL;
if (tmp & (1<<TRNG_CTRL_VALID)) { // valid sample?
if (neorv32_trng_get(&data)) { // data available?
i++;
}
}

2
sw/example/game_of_life/main.c
View file

@ -97,7 +97,7 @@ int main(void) {
// check if TRNG was synthesized
if (neorv32_trng_available()) {
neorv32_uart0_printf("\nTRNG detected. Using TRNG for universe initialization.\n");
neorv32_trng_enable(0);
neorv32_trng_enable();
trng_available = 1;
}

30
sw/example/processor_check/main.c
View file

@ -1004,38 +1004,14 @@ int main() {
// Fast interrupt channel 0
// ----------------------------------------------------------
neorv32_cpu_csr_write(CSR_MCAUSE, mcause_never_c);
PRINT_STANDARD("[%i] FIRQ0 (TRNG) ", cnt_test);
if (NEORV32_SYSINFO->SOC & (1 << SYSINFO_SOC_IO_TRNG)) {
cnt_test++;
// enable TRNG, trigger IRQ when FIFO is full
neorv32_trng_enable(1);
// enable fast interrupt
neorv32_cpu_csr_write(CSR_MIE, 1 << TRNG_FIRQ_ENABLE);
// sleep until interrupt
neorv32_cpu_sleep();
// no more interrupts
neorv32_cpu_csr_write(CSR_MIE, 0);
if (neorv32_cpu_csr_read(CSR_MCAUSE) == TRNG_TRAP_CODE) {
test_ok();
}
else {
test_fail();
}
}
else {
PRINT_STANDARD("[n.a.]\n");
}
PRINT_STANDARD("[%i] FIRQ0 (reserved) ", cnt_test);
PRINT_STANDARD("[n.a.]\n");
// ----------------------------------------------------------
// Fast interrupt channel 1 (CFS)
// ----------------------------------------------------------
neorv32_cpu_csr_write(CSR_MCAUSE, mcause_never_c);
PRINT_STANDARD("[%i] FIRQ1 (CFS) ", cnt_test);
PRINT_STANDARD("[n.a.]\n");