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- // Module for interfacing with the DHTxx sensors (xx = 11-21-22-33-44).
- #include "module.h"
- #include "lauxlib.h"
- #include "platform.h"
- #include "cpu_esp8266.h"
- #include "dht/dht.h"
- #define NUM_DHT GPIO_PIN_NUM
- // ****************************************************************************
- // DHT functions
- int platform_dht_exists( unsigned id )
- {
- return ((id < NUM_DHT) && (id > 0));
- }
- static void aux_read( lua_State *L )
- {
- double temp = dht_getTemperature();
- double humi = dht_getHumidity();
- int tempdec = (int)((temp - (int)temp) * 1000);
- int humidec = (int)((humi - (int)humi) * 1000);
- lua_pushnumber( L, (lua_Float) temp );
- lua_pushnumber( L, (lua_Float) humi );
- lua_pushinteger( L, tempdec );
- lua_pushinteger( L, humidec );
- }
- // Lua: status, temp, humi, tempdec, humidec = dht.read( id )
- static int dht_lapi_read( lua_State *L )
- {
- unsigned id = luaL_checkinteger( L, 1 );
- MOD_CHECK_ID( dht, id );
- lua_pushinteger( L, dht_read(id, DHT_NON11) );
- aux_read( L );
- return 5;
- }
- // Lua: status, temp, humi, tempdec, humidec = dht.read11( id ))
- static int dht_lapi_read11( lua_State *L )
- {
- unsigned id = luaL_checkinteger( L, 1 );
- MOD_CHECK_ID( dht, id );
- lua_pushinteger( L, dht_read(id, DHT11) );
- aux_read( L );
- return 5;
- }
- // Lua: status, temp, humi, tempdec, humidec = dht.read12( id ))
- static int dht_lapi_read12( lua_State *L )
- {
- unsigned id = luaL_checkinteger( L, 1 );
- MOD_CHECK_ID( dht, id );
- lua_pushinteger( L, dht_read(id, DHT12) );
- aux_read( L );
- return 5;
- }
- // Lua: status, temp, humi, tempdec, humidec = dht.readxx( id ))
- static int dht_lapi_readxx( lua_State *L )
- {
- unsigned id = luaL_checkinteger( L, 1 );
- MOD_CHECK_ID( dht, id );
- lua_pushinteger( L, dht_read(id, DHT22) );
- aux_read( L );
- return 5;
- }
- // Module function map
- LROT_BEGIN(dht, NULL, 0)
- LROT_FUNCENTRY( read, dht_lapi_read )
- LROT_FUNCENTRY( read11, dht_lapi_read11 )
- LROT_FUNCENTRY( read12, dht_lapi_read12 )
- LROT_FUNCENTRY( readxx, dht_lapi_read )
- LROT_NUMENTRY( OK, DHTLIB_OK )
- LROT_NUMENTRY( ERROR_CHECKSUM, DHTLIB_ERROR_CHECKSUM )
- LROT_NUMENTRY( ERROR_TIMEOUT, DHTLIB_ERROR_TIMEOUT )
- LROT_END(dht, NULL, 0)
- NODEMCU_MODULE(DHT, "dht", dht, NULL);
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