Send cmd struct to device

.gitignore

@@ -1 +1,2 @@
 __pycache__/
+**.swp

common.h

@@ -10,7 +10,7 @@ struct prng{
 
 #define CSPRNG_VERS 0x1
 
-/* Define all commandes */
+/* Define all commands */
 #define CSPRNG_CMD_GET_RNG  0x10
 
 struct cmd{

uart.c

@@ -60,7 +60,7 @@ static unsigned short csum(unsigned short *buf, int nwords) {
 int send_uart(struct prng **s_prng){
     int fd;
 
-    if ((fd = open("/dev/ttyACM0", O_RDWR | O_NOCTTY)) < 0){
+    if ((fd = open("/dev/ttyUSB0", O_RDWR | O_NOCTTY)) < 0){
         printf("Failed to read the device\n");
         exit(-1);
     }
@@ -68,10 +68,15 @@ int send_uart(struct prng **s_prng){
     set_serial_device(fd);
 
     char buffer[sizeof(struct prng)];
-    u_int8_t cmd = 1; 
+    char buf_cmd[sizeof(struct cmd)];
+
+    struct cmd s_cmd = {0};
+    s_cmd.version = CSPRNG_VERS;
+    s_cmd.cmd = CSPRNG_CMD_GET_RNG;
+    memcpy(buf_cmd, &s_cmd, sizeof(struct cmd));
 
     //printf("Sending command...\n");
-    size_t len = write(fd, &cmd, 1);
+    size_t len = write(fd, &buf_cmd, sizeof(struct cmd));
     //printf("Data sent: %ld\n\n", len);
 
     // Read data