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[sw] update onewire example program

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stnolting 2024-12-01 21:59:16 +01:00
parent 99f9331ffd
commit 30153f949b
1 changed files with 7 additions and 2 deletions
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9
sw/example/demo_onewire/main.c
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@ -63,13 +63,16 @@ int main() {
// intro
neorv32_uart0_printf("\n\n<<< NEORV32 1-Wire Interface (ONEWIRE) Demo Program >>>\n\n");
// info
neorv32_uart0_printf("ONEWIRE FIFO depth: %u entries\n", neorv32_onewire_get_fifo_depth());
// configure ONEWIRE base time
neorv32_uart0_printf("Configuring ONEWIRE time base...\n");
uint32_t t_base_ref = 10000; // reference: t_base = 10000ns = 10us
uint32_t t_base_real = neorv32_onewire_setup(t_base_ref);
neorv32_uart0_printf("t_base: requested = %u ns\n"
" actual value = %u ns\n"
" difference = %i ns\n\n", t_base_ref, t_base_real, ((int)t_base_ref)-((int)t_base_real));
" difference = %i ns\n", t_base_ref, t_base_real, ((int)t_base_ref)-((int)t_base_real));
// check bus state - should be high (pulled-high by the pull-up resistor)
neorv32_uart0_printf("Checking bus state... ");
@ -168,7 +171,9 @@ void show_1wire_commands(void) {
" 0x33 - Read ROM (for identification)\n"
" 0x55 - Match ROM (access specific device)\n"
" 0xF0 - Search ROM (for device search algorithm)\n"
" 0xCC - Skip ROM (skip addressing)\n");
" 0xCC - Skip ROM (skip addressing)\n"
" 0xF5 - PIO read access\n"
" 0x5A - PIO write access\n");
}