susb-set-serial.c

#include <aura/aura.h>
#include <unistd.h>
#define USB_STRING_DESCRIPTOR_HEADER(stringLength) ((2*(stringLength)+2) | (3<<8))


void write_serial(struct aura_node *node, const char *str)
{
        int ret;
        uint16_t *data = malloc(32); 
        int i = 0;
        struct aura_buffer *retbuf; 

        data[i++] = USB_STRING_DESCRIPTOR_HEADER(strlen(str));
        do { 
                data[i++] = *str++;
        } while (*str);

        ret = aura_call(node, "set_serial", &retbuf, 0, 0, data);
        printf("Serial number written with result %d, replug the device\n", ret);
        aura_buffer_release(retbuf);    
        free(data);
}

int main(int argc, const char **argv) {

        slog_init(NULL, 88);

        struct aura_node *n = aura_open("simpleusb", "simpleusbconfigs/pw-ctl.conf");
        if (!n) { 
                printf("err\n");
                return -1;
        }

        aura_wait_status(n, AURA_STATUS_ONLINE);

        write_serial(n, argv[1]);

        aura_close(n);
        return 0;
}