when i was learning basic tutorials I found that debug.value have a size in this code the buffer size was define to 62 i want to know why .
publishCanard(void)
{
static uint32_t publish_time = 0;
static int step = 0;
if(HAL_GetTick() < publish_time + PUBLISHER_PERIOD_mS) {return;} // rate limiting
publish_time = HAL_GetTick();
uint8_t buffer[UAVCAN_PROTOCOL_DEBUG_KEYVALUE_MESSAGE_SIZE];
memset(buffer,0x00,UAVCAN_PROTOCOL_DEBUG_KEYVALUE_MESSAGE_SIZE);
step++;
if(step == 256)
{
step = 0;
}
float val = sine_wave[step];
static uint8_t transfer_id = 0;
canardEncodeScalar(buffer, 0, 32, &val);
memcpy(&buffer[4], "sin", 3);
canardBroadcast(&g_canard,
UAVCAN_PROTOCOL_DEBUG_KEYVALUE_SIGNATURE,
UAVCAN_PROTOCOL_DEBUG_KEYVALUE_ID,
&transfer_id,
CANARD_TRANSFER_PRIORITY_LOW,
&buffer[0],
7);
}