128 lines
4.4 KiB
C
128 lines
4.4 KiB
C
/*
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* tsl2561.c
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*
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* Created on: Aug 21, 2015
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* Author: Michael Lucas (Aeprox @github)
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*/
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#include "module.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "../tsl2561/tsl2561.h"
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static uint16_t ch0;
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static uint16_t ch1;
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/* Initialises the device on pins sdapin and sclpin
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* Lua: status = tsl2561.init(sdapin, sclpin, address(optional), package(optional))
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*/
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static int ICACHE_FLASH_ATTR tsl2561_init(lua_State* L) {
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uint32_t sda;
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uint32_t scl;
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// check parameters
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if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
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return luaL_error(L, "wrong arg range");
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}
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sda = luaL_checkinteger(L, 1);
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scl = luaL_checkinteger(L, 2);
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if (scl == 0 || sda == 0) {
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return luaL_error(L, "no i2c for D0");
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}
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// init I2C
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uint8_t error = tsl2561Init(sda, scl);
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// Parse optional parameters
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if (lua_isnumber(L, 3)) {
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uint8_t address = luaL_checkinteger(L, 3);
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if (!((address == TSL2561_ADDRESS_GND) || (address == TSL2561_ADDRESS_FLOAT) || (address == TSL2561_ADDRESS_VDD))) {
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return luaL_error(L, "Invalid argument: address");
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}
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else{
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tsl2561SetAddress(address);
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}
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}
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if (lua_isnumber(L, 4)) {
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uint8_t package = luaL_checkinteger(L, 4);
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if (!((package == TSL2561_PACKAGE_T_FN_CL) || (package == TSL2561_PACKAGE_CS))) {
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return luaL_error(L, "Invalid argument: package");
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}
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else{
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tsl2561SetPackage(package);
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}
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}
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lua_pushnumber(L, error);
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return 1;
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}
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/* Sets the integration time and gain settings of the device
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* Lua: status = tsl2561.settiming(integration, gain)
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*/
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static int ICACHE_FLASH_ATTR tsl2561_lua_settiming(lua_State* L) {
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// check variables
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if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
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return luaL_error(L, "wrong arg range");
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}
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uint8_t integration = luaL_checkinteger(L, 1);
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if (!((integration == TSL2561_INTEGRATIONTIME_13MS) || (integration == TSL2561_INTEGRATIONTIME_101MS) || (integration == TSL2561_INTEGRATIONTIME_402MS))) {
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return luaL_error(L, "Invalid argument: integration");
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}
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uint8_t gain = luaL_checkinteger(L, 2);
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if (!((gain == TSL2561_GAIN_16X) || (gain == TSL2561_GAIN_1X))) {
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return luaL_error(L, "Invalid argument: gain");
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}
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lua_pushnumber(L, tsl2561SetTiming(integration, gain));
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return 1;
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}
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/* Reads sensor values from device and return calculated lux
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* Lua: lux, status = tsl2561.getlux()
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*/
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static int ICACHE_FLASH_ATTR tsl2561_lua_calclux(lua_State* L) {
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uint8_t error = tsl2561GetLuminosity(&ch0, &ch1);
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if (error) {
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lua_pushnumber(L, 0);
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lua_pushnumber(L, error);
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} else {
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lua_pushnumber(L, tsl2561CalculateLux(ch0, ch1));
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lua_pushnumber(L, error);
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}
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return 2;
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}
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/* Reads sensor values from device and returns them
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* Lua: ch0, ch1, status = tsl2561.getrawchannels()
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*/
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static int ICACHE_FLASH_ATTR tsl2561_lua_getchannels(lua_State* L) {
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uint8_t error = tsl2561GetLuminosity(&ch0, &ch1);
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lua_pushnumber(L, ch0);
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lua_pushnumber(L, ch1);
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lua_pushnumber(L, error);
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return 3;
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}
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// Module function map
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static const LUA_REG_TYPE tsl2561_map[] = {
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{ LSTRKEY( "settiming" ), LFUNCVAL( tsl2561_lua_settiming)},
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{ LSTRKEY( "getlux" ), LFUNCVAL( tsl2561_lua_calclux )},
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{ LSTRKEY( "getrawchannels" ), LFUNCVAL( tsl2561_lua_getchannels )},
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{ LSTRKEY( "init" ), LFUNCVAL( tsl2561_init )},
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{ LSTRKEY( "TSL2561_OK" ), LNUMVAL( TSL2561_ERROR_OK )},
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{ LSTRKEY( "TSL2561_ERROR_I2CINIT" ), LNUMVAL( TSL2561_ERROR_I2CINIT )},
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{ LSTRKEY( "TSL2561_ERROR_I2CBUSY" ), LNUMVAL( TSL2561_ERROR_I2CBUSY )},
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{ LSTRKEY( "TSL2561_ERROR_NOINIT" ), LNUMVAL( TSL2561_ERROR_NOINIT )},
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{ LSTRKEY( "TSL2561_ERROR_LAST" ), LNUMVAL( TSL2561_ERROR_LAST )},
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{ LSTRKEY( "INTEGRATIONTIME_13MS" ), LNUMVAL( TSL2561_INTEGRATIONTIME_13MS )},
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{ LSTRKEY( "INTEGRATIONTIME_101MS" ), LNUMVAL( TSL2561_INTEGRATIONTIME_101MS )},
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{ LSTRKEY( "INTEGRATIONTIME_402MS" ), LNUMVAL( TSL2561_INTEGRATIONTIME_402MS )},
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{ LSTRKEY( "GAIN_1X" ), LNUMVAL( TSL2561_GAIN_1X )},
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{ LSTRKEY( "GAIN_16X" ), LNUMVAL( TSL2561_GAIN_16X )},
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{ LSTRKEY( "PACKAGE_CS" ), LNUMVAL( TSL2561_PACKAGE_CS )},
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{ LSTRKEY( "PACKAGE_T_FN_CL" ), LNUMVAL( TSL2561_PACKAGE_T_FN_CL )},
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{ LSTRKEY( "ADDRESS_GND" ), LNUMVAL( TSL2561_ADDRESS_GND )},
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{ LSTRKEY( "ADDRESS_FLOAT" ), LNUMVAL( TSL2561_ADDRESS_FLOAT )},
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{ LSTRKEY( "ADDRESS_VDD" ), LNUMVAL( TSL2561_ADDRESS_VDD )},
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{ LNILKEY, LNILVAL}
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};
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NODEMCU_MODULE(TSL2561, "tsl2561", tsl2561_map, NULL);
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