void mcu_main()
{
int version = api_version();
debug_print(DBG_INFO, "API version: %d.%d\n", version/100, version%100);
gpio_setup(GPIO_DHT, OUTPUT);
gpio_write(GPIO_DHT, HIGH);
/* do not send instructions within 1S after power on to pass the unstable state */
mcu_sleep(100);
uint8_t data[DHT_DATA_LEN];
while (1) {
int rc;
uint8_t humidity, temperature;
if ((rc = dht11_read(GPIO_DHT, data, sizeof(data))) == DHT_SUCCESS) {
humidity = data[0], temperature = data[2];
debug_print(DBG_INFO, "Humidity: %d%, Temperature: %d C\n", humidity, temperature);
// debug_print(DBG_INFO, "%d %d %d %d %d\n",
// data[0], data[1], data[2], data[3], data[4]);
} else {
debug_print(DBG_ERROR, "dht11_read() error [%d]\n", rc);
}
unsigned char buf[LEN_IPCBUF];
if ((rc = host_receive(buf, sizeof(buf))) > 0 && buf[0] == '?') {
rc = mcu_snprintf((char*)buf, LEN_IPCBUF, "RH=%d,T=%d\n", humidity, temperature);
host_send(buf, rc);
}
mcu_sleep(300);
}
}
static v7_val_t DHT11_read(struct v7 *v7) {
int pin, temp, rh;
v7_val_t pinv = v7_arg(v7, 0), result;
if (!v7_is_number(pinv)) {
printf("non-numeric pin\n");
return v7_create_undefined();
}
pin = v7_to_number(pinv);
if (!dht11_read(pin, &temp, &rh)) {
return v7_create_null();
}
result = v7_create_object(v7);
v7_own(v7, &result);
v7_set(v7, result, "temp", 4, 0, v7_create_number(temp));
v7_set(v7, result, "rh", 2, 0, v7_create_number(rh));
v7_disown(v7, &result);
return result;
}
ICACHE_FLASH_ATTR
static v7_val_t DHT11_read(struct v7 *v7, v7_val_t this_obj, v7_val_t args) {
int pin, temp, rh;
v7_val_t pinv = v7_array_get(v7, args, 0), result;
if (!v7_is_double(pinv)) {
printf("non-numeric pin\n");
return v7_create_undefined();
}
pin = v7_to_double(pinv);
if (!dht11_read(pin, &temp, &rh)) {
return v7_create_null();
}
result = v7_create_object(v7);
v7_set(v7, result, "temp", 4, 0, v7_create_number(temp));
v7_set(v7, result, "rh", 2, 0, v7_create_number(rh));
/* prevent the object from being potentially GCed */
v7_set(v7, args, "_tmp", 4, 0, result);
return result;
}
static void hum_temp_complete_read(struct task* task) {
uint8_t dht11_data[5];
result_t result = dht11_read((struct gpio*) task->data, dht11_data);
if (result == RESULT_SUCCESS) {
struct hum_temp_reading reading = { dht11_data[0], dht11_data[2] };
current_read_event.reading = reading;
} else {
current_read_event.reading = (struct hum_temp_reading) { 0 };
}
event_fire_event((event_t*) ¤t_read_event);
}
static bool on_hum_temp_reading(event_t* event) {
struct hum_temp_read_event* read_event = (struct hum_temp_read_event*) event;
struct hum_temp_reading current_reading = read_event->reading;
if (current_reading.temperature == 0 && current_reading.humidity == 0) {
LOG_ERROR("No humidity / temperature reading received\n", "");
}
push_sample(&humidity_20_sec_buffer, current_reading.humidity);
push_sample(&humidity_10_min_buffer, current_reading.humidity);
push_sample(&temperature_20_sec_buffer, current_reading.temperature);
push_sample(&temperature_10_min_buffer, current_reading.temperature);
return false;
}
uint16_t hum_temp_load(void) {
uint16_t pos = 0;
for (uint8_t i = 0; i < ARRAY_SIZE(sample_buffers); i++) {
sample_buffer_init(sample_buffers[i], sample_buffers[i]->samples, sample_buffers[i]->size);
eeprom_read_buffer(sample_buffers[i], pos);
pos += sample_buffers[i]->count + 2;
}
return pos;
}
static enum v7_err DHT11_read(struct v7 *v7, v7_val_t *res) {
enum v7_err rcode = V7_OK;
int pin, temp, rh;
v7_val_t pinv = v7_arg(v7, 0);
if (!v7_is_number(pinv)) {
printf("non-numeric pin\n");
*res = v7_create_undefined();
goto clean;
}
pin = v7_to_number(pinv);
if (!dht11_read(pin, &temp, &rh)) {
*res = v7_create_null();
goto clean;
}
*res = v7_create_object(v7);
v7_set(v7, *res, "temp", 4, 0, v7_create_number(temp));
v7_set(v7, *res, "rh", 2, 0, v7_create_number(rh));
clean:
return rcode;
}
