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#include <sys/types.h>
#include <inttypes.h>
#include <string.h>
#include "output.h"
#include "commands.h"
#include "bitwise.h"
#define NUM_OUTPUTS 4
#define DATA_SIZE (1+NUM_OUTPUTS*4)
/* Creates data and metadata for a overrideoutput packet
* Returns data size.
*/
ssize_t EncodeSetOutputOverride(
struct metadata * m, /* data_len and msg_type will be populated*/
uint8_t * data, /* Output buffer */
size_t data_size, /* Max buffer size */
const char * msg) /* Message to encode */
{
m->msg_type = OUTPUT_OVERRIDE_ID;
m->data_len = DATA_SIZE;
if (data_size < DATA_SIZE) {
return -1;
}
float values[NUM_OUTPUTS];
values[0] = -1;
char* tok = strtok(msg, " ");
char* ena = strtok(NULL, " ");
data[0] = atoi(ena);
int i;
for (i = 0; i < NUM_OUTPUTS; i++) {
char* value = strtok(NULL, " ");
if (value == NULL) {
return -1;
}
float a;
sscanf(value, "%f", &a);
values[i] = a;
}
for (i = 0; i < NUM_OUTPUTS; i++) {
data[1+i*4+0] = FloatByte1(values[i]);
data[1+i*4+1] = FloatByte2(values[i]);
data[1+i*4+2] = FloatByte3(values[i]);
data[1+i*4+3] = FloatByte4(values[i]);
}
return DATA_SIZE;
}