87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
// Module for interfacing with sigma-delta hardware
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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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// Lua: setup( pin )
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static int sigma_delta_setup( lua_State *L )
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{
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int pin = luaL_checkinteger( L, 1 );
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MOD_CHECK_ID(sigma_delta, pin);
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platform_sigma_delta_setup( pin );
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return 0;
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}
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// Lua: close( pin )
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static int sigma_delta_close( lua_State *L )
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{
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int pin = luaL_checkinteger( L, 1 );
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MOD_CHECK_ID(sigma_delta, pin);
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platform_sigma_delta_close( pin );
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return 0;
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}
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// Lua: setpwmduty( duty_cycle )
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static int sigma_delta_setpwmduty( lua_State *L )
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{
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int duty = luaL_checkinteger( L, 1 );
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if (duty < 0 || duty > 255) {
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return luaL_error( L, "wrong arg range" );
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}
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platform_sigma_delta_set_pwmduty( duty );
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return 0;
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}
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// Lua: setprescale( value )
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static int sigma_delta_setprescale( lua_State *L )
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{
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int prescale = luaL_checkinteger( L, 1 );
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if (prescale < 0 || prescale > 255) {
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return luaL_error( L, "wrong arg range" );
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}
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platform_sigma_delta_set_prescale( prescale );
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return 0;
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}
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// Lua: settarget( value )
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static int sigma_delta_settarget( lua_State *L )
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{
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int target = luaL_checkinteger( L, 1 );
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if (target < 0 || target > 255) {
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return luaL_error( L, "wrong arg range" );
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}
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platform_sigma_delta_set_target( target );
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return 0;
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}
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// Module function map
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LROT_BEGIN(sigma_delta)
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LROT_FUNCENTRY( setup, sigma_delta_setup )
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LROT_FUNCENTRY( close, sigma_delta_close )
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LROT_FUNCENTRY( setpwmduty, sigma_delta_setpwmduty )
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LROT_FUNCENTRY( setprescale, sigma_delta_setprescale )
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LROT_FUNCENTRY( settarget, sigma_delta_settarget )
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LROT_END( sigma_delta, NULL, 0 )
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NODEMCU_MODULE(SIGMA_DELTA, "sigma_delta", sigma_delta, NULL);
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