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