45 lines
874 B
C
45 lines
874 B
C
// Module for interfacing with adc
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//#include "lua.h"
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#include "lualib.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "auxmods.h"
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#include "lrotable.h"
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#include "c_types.h"
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// Lua: read(id) , return system adc
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static int adc_sample( lua_State* L )
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{
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unsigned id = luaL_checkinteger( L, 1 );
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MOD_CHECK_ID( adc, id );
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unsigned val = 0xFFFF & system_adc_read();
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lua_pushinteger( L, val );
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return 1;
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}
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// Module function map
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#define MIN_OPT_LEVEL 2
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#include "lrodefs.h"
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const LUA_REG_TYPE adc_map[] =
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{
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{ LSTRKEY( "read" ), LFUNCVAL( adc_sample ) },
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#if LUA_OPTIMIZE_MEMORY > 0
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#endif
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{ LNILKEY, LNILVAL }
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};
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LUALIB_API int luaopen_adc( lua_State *L )
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{
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#if LUA_OPTIMIZE_MEMORY > 0
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return 0;
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#else // #if LUA_OPTIMIZE_MEMORY > 0
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luaL_register( L, AUXLIB_ADC, adc_map );
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// Add constants
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return 1;
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#endif // #if LUA_OPTIMIZE_MEMORY > 0
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}
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