Source code for the Trusted Boot Module.
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tbm-mcu/source/shell/buzzer.c

48 lines
844 B

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <buzzer.h>
#include <console.h>
extern struct buzzer buzzers[];
extern size_t nbuzzers;
int shell_buzzer(struct console *con, size_t argc, const char **argv)
{
struct buzzer *buzzer;
size_t buzzer_id = 0;
uint32_t freq = 0;
int state = 0;
if (argc >= 3)
freq = strtoul(argv[2], NULL, 0);
if (argc >= 2)
state = (strcmp(argv[1], "on") == 0);
if (argc >= 1)
buzzer_id = strtoul(argv[0], NULL, 0);
fprintf(con->fp, "%u %d %u\n", buzzer_id, state, freq);
if (buzzer_id >= nbuzzers) {
fprintf(con->fp, "error: invalid buzzer ID %d\n", buzzer_id);
return -1;
}
buzzer = buzzers + buzzer_id;
if (!state) {
buzzer_disable(buzzer);
return 0;
}
if (freq)
buzzer_set_freq(buzzer, freq);
buzzer_enable(buzzer);
return 0;
}