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6 years ago
#include <common.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdint.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
6 years ago
int main(int argc, char **argv)
{
printf("hello audio world!\n");
int fd;
// fprintf(stderr, "test on gpio (stderr -> Audio)");
fd = open("/dev/stdout", O_WRONLY);
if (fd < 0) {
fprintf(stdout, "fail to open /dev/stdout");
return 1;
}
write(fd, "write through device file!\n", 27);
6 years ago
int fd_gpio;
fd_gpio = open("/dev/gpio", O_WRONLY);
if (fd_gpio < 0) {
fprintf(stdout, "fail to open /dev/gpio");
return 1;
}
if (ioctl(fd_gpio, 1, NULL) != 0) {
fprintf(stdout, "fail to use ioctl on /dev/gpio");
return 1;
}
write(fd_gpio, "1", 1);
if (ioctl(fd_gpio, 2, NULL) != 0) {
fprintf(stdout, "fail to use ioctl on /dev/gpio");
return 1;
}
write(fd_gpio, "1", 1);
fprintf(stdout, "this is new sfsimg 2\n");
6 years ago
return 0;
}