void
voltage_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
char buf[32];
double voltage = voltage_get();
sprintf(buf, "%d", (int)(voltage * (double)1000));
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, (uint8_t *)buf, strlen(buf));
}
void
voltage_periodic_handler(resource_t *r)
{
static uint32_t obs_counter = 0;
char content[32];
obs_counter++;
double voltage = voltage_get();
/* Build notification. */
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
coap_init_message(notification, COAP_TYPE_NON, CONTENT_2_05, 0 );
coap_set_payload(notification, content, snprintf(content, sizeof(content), "%d", (int)(voltage * (double)1000)));
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(r, obs_counter, notification);
}
float voltage_get_input(void){
return ((voltage_get() * VALUE_DIV_R1_OHM) / VALUE_DIV_R2_OHM);
}
