// Module for U8glib #include "module.h" #include "lauxlib.h" #include "platform.h" #include "c_stdlib.h" #include "u8g.h" #include "u8g_config.h" struct _lu8g_userdata_t { u8g_t u8g; }; typedef struct _lu8g_userdata_t lu8g_userdata_t; // shorthand macro for the u8g structure inside the userdata #define LU8G (&(lud->u8g)) // helper function: retrieve and check userdata argument static lu8g_userdata_t *get_lud( lua_State *L ) { lu8g_userdata_t *lud = (lu8g_userdata_t *)luaL_checkudata(L, 1, "u8g.display"); luaL_argcheck(L, lud, 1, "u8g.display expected"); return lud; } // helper function: retrieve given number of integer arguments static void lu8g_get_int_args( lua_State *L, uint8_t stack, uint8_t num, u8g_uint_t *args) { while (num-- > 0) { *args++ = luaL_checkinteger( L, stack++ ); } } // Lua: u8g.begin( self ) static int lu8g_begin( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_Begin( LU8G ); return 0; } // Lua: u8g.setFont( self, font ) static int lu8g_setFont( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_fntpgm_uint8_t *font = (u8g_fntpgm_uint8_t *)lua_touserdata( L, 2 ); if (font != NULL) u8g_SetFont( LU8G, font ); else luaL_argerror(L, 2, "font data expected"); return 0; } // Lua: u8g.setFontRefHeightAll( self ) static int lu8g_setFontRefHeightAll( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontRefHeightAll( LU8G ); return 0; } // Lua: u8g.setFontRefHeightExtendedText( self ) static int lu8g_setFontRefHeightExtendedText( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontRefHeightExtendedText( LU8G ); return 0; } // Lua: u8g.setFontRefHeightText( self ) static int lu8g_setFontRefHeightText( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontRefHeightText( LU8G ); return 0; } // Lua: u8g.setDefaultBackgroundColor( self ) static int lu8g_setDefaultBackgroundColor( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetDefaultBackgroundColor( LU8G ); return 0; } // Lua: u8g.setDefaultForegroundColor( self ) static int lu8g_setDefaultForegroundColor( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetDefaultForegroundColor( LU8G ); return 0; } // Lua: u8g.setFontPosBaseline( self ) static int lu8g_setFontPosBaseline( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontPosBaseline( LU8G ); return 0; } // Lua: u8g.setFontPosBottom( self ) static int lu8g_setFontPosBottom( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontPosBottom( LU8G ); return 0; } // Lua: u8g.setFontPosCenter( self ) static int lu8g_setFontPosCenter( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontPosCenter( LU8G ); return 0; } // Lua: u8g.setFontPosTop( self ) static int lu8g_setFontPosTop( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetFontPosTop( LU8G ); return 0; } // Lua: int = u8g.getFontAscent( self ) static int lu8g_getFontAscent( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetFontAscent( LU8G ) ); return 1; } // Lua: int = u8g.getFontDescent( self ) static int lu8g_getFontDescent( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetFontDescent( LU8G ) ); return 1; } // Lua: int = u8g.getFontLineSpacing( self ) static int lu8g_getFontLineSpacing( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetFontLineSpacing( LU8G ) ); return 1; } // Lua: int = u8g.getMode( self ) static int lu8g_getMode( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetMode( LU8G ) ); return 1; } // Lua: u8g.setColorIndex( self, color ) static int lu8g_setColorIndex( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetColorIndex( LU8G, luaL_checkinteger( L, 2 ) ); return 0; } // Lua: int = u8g.getColorIndex( self ) static int lu8g_getColorIndex( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetColorIndex( LU8G ) ); return 1; } static int lu8g_generic_drawStr( lua_State *L, uint8_t rot ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[2]; lu8g_get_int_args( L, 2, 2, args ); const char *s = luaL_checkstring( L, (1+2) + 1 ); if (s == NULL) return 0; switch (rot) { case 1: lua_pushinteger( L, u8g_DrawStr90( LU8G, args[0], args[1], s ) ); break; case 2: lua_pushinteger( L, u8g_DrawStr180( LU8G, args[0], args[1], s ) ); break; case 3: lua_pushinteger( L, u8g_DrawStr270( LU8G, args[0], args[1], s ) ); break; default: lua_pushinteger( L, u8g_DrawStr( LU8G, args[0], args[1], s ) ); break; } return 1; } // Lua: pix_len = u8g.drawStr( self, x, y, string ) static int lu8g_drawStr( lua_State *L ) { return lu8g_generic_drawStr( L, 0 ); } // Lua: pix_len = u8g.drawStr90( self, x, y, string ) static int lu8g_drawStr90( lua_State *L ) { return lu8g_generic_drawStr( L, 1 ); } // Lua: pix_len = u8g.drawStr180( self, x, y, string ) static int lu8g_drawStr180( lua_State *L ) { return lu8g_generic_drawStr( L, 2 ); } // Lua: pix_len = u8g.drawStr270( self, x, y, string ) static int lu8g_drawStr270( lua_State *L ) { return lu8g_generic_drawStr( L, 3 ); } // Lua: u8g.drawLine( self, x1, y1, x2, y2 ) static int lu8g_drawLine( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); u8g_DrawLine( LU8G, args[0], args[1], args[2], args[3] ); return 0; } // Lua: u8g.drawTriangle( self, x0, y0, x1, y1, x2, y2 ) static int lu8g_drawTriangle( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[6]; lu8g_get_int_args( L, 2, 6, args ); u8g_DrawTriangle( LU8G, args[0], args[1], args[2], args[3], args[4], args[5] ); return 0; } // Lua: u8g.drawBox( self, x, y, width, height ) static int lu8g_drawBox( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); u8g_DrawBox( LU8G, args[0], args[1], args[2], args[3] ); return 0; } // Lua: u8g.drawRBox( self, x, y, width, height, radius ) static int lu8g_drawRBox( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[5]; lu8g_get_int_args( L, 2, 5, args ); u8g_DrawRBox( LU8G, args[0], args[1], args[2], args[3], args[4] ); return 0; } // Lua: u8g.drawFrame( self, x, y, width, height ) static int lu8g_drawFrame( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); u8g_DrawFrame( LU8G, args[0], args[1], args[2], args[3] ); return 0; } // Lua: u8g.drawRFrame( self, x, y, width, height, radius ) static int lu8g_drawRFrame( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[5]; lu8g_get_int_args( L, 2, 5, args ); u8g_DrawRFrame( LU8G, args[0], args[1], args[2], args[3], args[4] ); return 0; } // Lua: u8g.drawDisc( self, x0, y0, rad, opt = U8G_DRAW_ALL ) static int lu8g_drawDisc( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[3]; lu8g_get_int_args( L, 2, 3, args ); u8g_uint_t opt = luaL_optinteger( L, (1+3) + 1, U8G_DRAW_ALL ); u8g_DrawDisc( LU8G, args[0], args[1], args[2], opt ); return 0; } // Lua: u8g.drawCircle( self, x0, y0, rad, opt = U8G_DRAW_ALL ) static int lu8g_drawCircle( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[3]; lu8g_get_int_args( L, 2, 3, args ); u8g_uint_t opt = luaL_optinteger( L, (1+3) + 1, U8G_DRAW_ALL ); u8g_DrawCircle( LU8G, args[0], args[1], args[2], opt ); return 0; } // Lua: u8g.drawEllipse( self, x0, y0, rx, ry, opt = U8G_DRAW_ALL ) static int lu8g_drawEllipse( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); u8g_uint_t opt = luaL_optinteger( L, (1+4) + 1, U8G_DRAW_ALL ); u8g_DrawEllipse( LU8G, args[0], args[1], args[2], args[3], opt ); return 0; } // Lua: u8g.drawFilledEllipse( self, x0, y0, rx, ry, opt = U8G_DRAW_ALL ) static int lu8g_drawFilledEllipse( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); u8g_uint_t opt = luaL_optinteger( L, (1+4) + 1, U8G_DRAW_ALL ); u8g_DrawFilledEllipse( LU8G, args[0], args[1], args[2], args[3], opt ); return 0; } // Lua: u8g.drawPixel( self, x, y ) static int lu8g_drawPixel( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[2]; lu8g_get_int_args( L, 2, 2, args ); u8g_DrawPixel( LU8G, args[0], args[1] ); return 0; } // Lua: u8g.drawHLine( self, x, y, width ) static int lu8g_drawHLine( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[3]; lu8g_get_int_args( L, 2, 3, args ); u8g_DrawHLine( LU8G, args[0], args[1], args[2] ); return 0; } // Lua: u8g.drawVLine( self, x, y, width ) static int lu8g_drawVLine( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[3]; lu8g_get_int_args( L, 2, 3, args ); u8g_DrawVLine( LU8G, args[0], args[1], args[2] ); return 0; } // Lua: u8g.drawXBM( self, x, y, width, height, data ) static int lu8g_drawXBM( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); const char *xbm_data = luaL_checkstring( L, (1+4) + 1 ); if (xbm_data == NULL) return 0; u8g_DrawXBM( LU8G, args[0], args[1], args[2], args[3], (const uint8_t *)xbm_data ); return 0; } // Lua: u8g.drawBitmap( self, x, y, count, height, data ) static int lu8g_drawBitmap( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t args[4]; lu8g_get_int_args( L, 2, 4, args ); const char *bm_data = luaL_checkstring( L, (1+4) + 1 ); if (bm_data == NULL) return 0; u8g_DrawBitmap( LU8G, args[0], args[1], args[2], args[3], (const uint8_t *)bm_data ); return 0; } // Lua: u8g.setScale2x2( self ) static int lu8g_setScale2x2( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetScale2x2( LU8G ); return 0; } // Lua: u8g.undoScale( self ) static int lu8g_undoScale( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_UndoScale( LU8G ); return 0; } // Lua: u8g.firstPage( self ) static int lu8g_firstPage( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_FirstPage( LU8G ); return 0; } // Lua: bool = u8g.nextPage( self ) static int lu8g_nextPage( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushboolean( L, u8g_NextPage( LU8G ) ); return 1; } // Lua: u8g.sleepOn( self ) static int lu8g_sleepOn( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SleepOn( LU8G ); return 0; } // Lua: u8g.sleepOff( self ) static int lu8g_sleepOff( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SleepOff( LU8G ); return 0; } // Lua: u8g.setRot90( self ) static int lu8g_setRot90( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetRot90( LU8G ); return 0; } // Lua: u8g.setRot180( self ) static int lu8g_setRot180( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetRot180( LU8G ); return 0; } // Lua: u8g.setRot270( self ) static int lu8g_setRot270( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_SetRot270( LU8G ); return 0; } // Lua: u8g.undoRotation( self ) static int lu8g_undoRotation( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_UndoRotation( LU8G ); return 0; } // Lua: width = u8g.getWidth( self ) static int lu8g_getWidth( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetWidth( LU8G ) ); return 1; } // Lua: height = u8g.getHeight( self ) static int lu8g_getHeight( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; lua_pushinteger( L, u8g_GetHeight( LU8G ) ); return 1; } // Lua: width = u8g.getStrWidth( self, string ) static int lu8g_getStrWidth( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; const char *s = luaL_checkstring( L, 2 ); if (s == NULL) return 0; lua_pushinteger( L, u8g_GetStrWidth( LU8G, s ) ); return 1; } // Lua: u8g.setFontLineSpacingFactor( self, factor ) static int lu8g_setFontLineSpacingFactor( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; u8g_uint_t factor = luaL_checkinteger( L, 2 ); u8g_SetFontLineSpacingFactor( LU8G, factor ); return 0; } // ------------------------------------------------------------ // comm functions // #define I2C_CMD_MODE 0x000 #define I2C_DATA_MODE 0x040 #define ESP_I2C_ID 0 static uint8_t do_i2c_start(uint8_t id, uint8_t sla) { platform_i2c_send_start( id ); // ignore return value -> tolerate missing ACK platform_i2c_send_address( id, sla, PLATFORM_I2C_DIRECTION_TRANSMITTER ); return 1; } static uint8_t u8g_com_esp8266_ssd_start_sequence(u8g_t *u8g) { /* are we requested to set the a0 state? */ if ( u8g->pin_list[U8G_PI_SET_A0] == 0 ) return 1; /* setup bus, might be a repeated start */ if ( do_i2c_start( ESP_I2C_ID, u8g->i2c_addr ) == 0 ) return 0; if ( u8g->pin_list[U8G_PI_A0_STATE] == 0 ) { // ignore return value -> tolerate missing ACK if ( platform_i2c_send_byte( ESP_I2C_ID, I2C_CMD_MODE ) == 0 ) ; //return 0; } else { platform_i2c_send_byte( ESP_I2C_ID, I2C_DATA_MODE ); } u8g->pin_list[U8G_PI_SET_A0] = 0; return 1; } static void lu8g_digital_write( u8g_t *u8g, uint8_t pin_index, uint8_t value ) { uint8_t pin; pin = u8g->pin_list[pin_index]; if ( pin != U8G_PIN_NONE ) platform_gpio_write( pin, value ); } void u8g_Delay(uint16_t msec) { const uint16_t chunk = 50; while (msec > chunk) { os_delay_us( chunk*1000 ); msec -= chunk; } if (msec > 0) os_delay_us( msec*1000 ); } void u8g_MicroDelay(void) { os_delay_us( 1 ); } void u8g_10MicroDelay(void) { os_delay_us( 10 ); } uint8_t u8g_com_esp8266_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) { switch(msg) { case U8G_COM_MSG_STOP: break; case U8G_COM_MSG_INIT: // we assume that the SPI interface was already initialized // just care for the /CS and D/C pins lu8g_digital_write( u8g, U8G_PI_CS, PLATFORM_GPIO_HIGH ); platform_gpio_mode( u8g->pin_list[U8G_PI_CS], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT ); platform_gpio_mode( u8g->pin_list[U8G_PI_A0], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT ); break; case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */ lu8g_digital_write( u8g, U8G_PI_A0, arg_val == 0 ? PLATFORM_GPIO_LOW : PLATFORM_GPIO_HIGH ); break; case U8G_COM_MSG_CHIP_SELECT: if (arg_val == 0) { /* disable */ lu8g_digital_write( u8g, U8G_PI_CS, PLATFORM_GPIO_HIGH ); } else { /* enable */ //u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW); lu8g_digital_write( u8g, U8G_PI_CS, PLATFORM_GPIO_LOW ); } break; case U8G_COM_MSG_RESET: if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE ) lu8g_digital_write( u8g, U8G_PI_RESET, arg_val == 0 ? PLATFORM_GPIO_LOW : PLATFORM_GPIO_HIGH ); break; case U8G_COM_MSG_WRITE_BYTE: platform_spi_send( 1, 8, arg_val ); break; case U8G_COM_MSG_WRITE_SEQ: case U8G_COM_MSG_WRITE_SEQ_P: { register uint8_t *ptr = arg_ptr; while( arg_val > 0 ) { platform_spi_send( 1, 8, *ptr++ ); arg_val--; } } break; } return 1; } uint8_t u8g_com_esp8266_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) { switch(msg) { case U8G_COM_MSG_INIT: // we assume that the i2c bus was already initialized //u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]); break; case U8G_COM_MSG_STOP: break; case U8G_COM_MSG_RESET: /* Currently disabled, but it could be enable. Previous restrictions have been removed */ /* u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val); */ break; case U8G_COM_MSG_CHIP_SELECT: u8g->pin_list[U8G_PI_A0_STATE] = 0; u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again, also forces start condition */ if ( arg_val == 0 ) { /* disable chip, send stop condition */ platform_i2c_send_stop( ESP_I2C_ID ); } else { /* enable, do nothing: any byte writing will trigger the i2c start */ } break; case U8G_COM_MSG_WRITE_BYTE: //u8g->pin_list[U8G_PI_SET_A0] = 1; if ( u8g_com_esp8266_ssd_start_sequence(u8g) == 0 ) return platform_i2c_send_stop( ESP_I2C_ID ), 0; // ignore return value -> tolerate missing ACK if ( platform_i2c_send_byte( ESP_I2C_ID, arg_val) == 0 ) ; //return platform_i2c_send_stop( ESP_I2C_ID ), 0; // platform_i2c_send_stop( ESP_I2C_ID ); break; case U8G_COM_MSG_WRITE_SEQ: case U8G_COM_MSG_WRITE_SEQ_P: //u8g->pin_list[U8G_PI_SET_A0] = 1; if ( u8g_com_esp8266_ssd_start_sequence(u8g) == 0 ) return platform_i2c_send_stop( ESP_I2C_ID ), 0; { register uint8_t *ptr = arg_ptr; while( arg_val > 0 ) { // ignore return value -> tolerate missing ACK if ( platform_i2c_send_byte( ESP_I2C_ID, *ptr++) == 0 ) ; //return platform_i2c_send_stop( ESP_I2C_ID ), 0; arg_val--; } } // platform_i2c_send_stop( ESP_I2C_ID ); break; case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */ u8g->pin_list[U8G_PI_A0_STATE] = arg_val; u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again */ break; } return 1; } // device destructor static int lu8g_close_display( lua_State *L ) { lu8g_userdata_t *lud; if ((lud = get_lud( L )) == NULL) return 0; return 0; } // *************************************************************************** // Device constructors // // // I2C based devices will use this function template to implement the Lua binding. #undef U8G_DISPLAY_TABLE_ENTRY #define U8G_DISPLAY_TABLE_ENTRY(device) \ static int lu8g_ ## device( lua_State *L ) \ { \ unsigned addr = luaL_checkinteger( L, 1 ); \ \ if (addr == 0) \ return luaL_error( L, "i2c address required" ); \ \ lu8g_userdata_t *lud = (lu8g_userdata_t *) lua_newuserdata( L, sizeof( lu8g_userdata_t ) ); \ \ lud->u8g.i2c_addr = (uint8_t)addr; \ \ u8g_InitI2C( LU8G, &u8g_dev_ ## device, U8G_I2C_OPT_NONE); \ \ /* set its metatable */ \ luaL_getmetatable(L, "u8g.display"); \ lua_setmetatable(L, -2); \ \ return 1; \ } // // Unroll the display table and insert binding functions for I2C based displays. U8G_DISPLAY_TABLE_I2C // // // // SPI based devices will use this function template to implement the Lua binding. #undef U8G_DISPLAY_TABLE_ENTRY #define U8G_DISPLAY_TABLE_ENTRY(device) \ static int lu8g_ ## device( lua_State *L ) \ { \ unsigned cs = luaL_checkinteger( L, 1 ); \ if (cs == 0) \ return luaL_error( L, "CS pin required" ); \ unsigned dc = luaL_checkinteger( L, 2 ); \ if (dc == 0) \ return luaL_error( L, "D/C pin required" ); \ unsigned res = luaL_optinteger( L, 3, U8G_PIN_NONE ); \ \ lu8g_userdata_t *lud = (lu8g_userdata_t *) lua_newuserdata( L, sizeof( lu8g_userdata_t ) ); \ \ u8g_InitHWSPI( LU8G, &u8g_dev_ ## device, cs, dc, res ); \ \ /* set its metatable */ \ luaL_getmetatable(L, "u8g.display"); \ lua_setmetatable(L, -2); \ \ return 1; \ } // // Unroll the display table and insert binding functions for SPI based displays. U8G_DISPLAY_TABLE_SPI // // *************************************************************************** // Module function map static const LUA_REG_TYPE lu8g_display_map[] = { { LSTRKEY( "begin" ), LFUNCVAL( lu8g_begin ) }, { LSTRKEY( "drawBitmap" ), LFUNCVAL( lu8g_drawBitmap ) }, { LSTRKEY( "drawBox" ), LFUNCVAL( lu8g_drawBox ) }, { LSTRKEY( "drawCircle" ), LFUNCVAL( lu8g_drawCircle ) }, { LSTRKEY( "drawDisc" ), LFUNCVAL( lu8g_drawDisc ) }, { LSTRKEY( "drawEllipse" ), LFUNCVAL( lu8g_drawEllipse ) }, { LSTRKEY( "drawFilledEllipse" ), LFUNCVAL( lu8g_drawFilledEllipse ) }, { LSTRKEY( "drawFrame" ), LFUNCVAL( lu8g_drawFrame ) }, { LSTRKEY( "drawHLine" ), LFUNCVAL( lu8g_drawHLine ) }, { LSTRKEY( "drawLine" ), LFUNCVAL( lu8g_drawLine ) }, { LSTRKEY( "drawPixel" ), LFUNCVAL( lu8g_drawPixel ) }, { LSTRKEY( "drawRBox" ), LFUNCVAL( lu8g_drawRBox ) }, { LSTRKEY( "drawRFrame" ), LFUNCVAL( lu8g_drawRFrame ) }, { LSTRKEY( "drawStr" ), LFUNCVAL( lu8g_drawStr ) }, { LSTRKEY( "drawStr90" ), LFUNCVAL( lu8g_drawStr90 ) }, { LSTRKEY( "drawStr180" ), LFUNCVAL( lu8g_drawStr180 ) }, { LSTRKEY( "drawStr270" ), LFUNCVAL( lu8g_drawStr270 ) }, { LSTRKEY( "drawTriangle" ), LFUNCVAL( lu8g_drawTriangle ) }, { LSTRKEY( "drawVLine" ), LFUNCVAL( lu8g_drawVLine ) }, { LSTRKEY( "drawXBM" ), LFUNCVAL( lu8g_drawXBM ) }, { LSTRKEY( "firstPage" ), LFUNCVAL( lu8g_firstPage ) }, { LSTRKEY( "getColorIndex" ), LFUNCVAL( lu8g_getColorIndex ) }, { LSTRKEY( "getFontAscent" ), LFUNCVAL( lu8g_getFontAscent ) }, { LSTRKEY( "getFontDescent" ), LFUNCVAL( lu8g_getFontDescent ) }, { LSTRKEY( "getFontLineSpacing" ), LFUNCVAL( lu8g_getFontLineSpacing ) }, { LSTRKEY( "getHeight" ), LFUNCVAL( lu8g_getHeight ) }, { LSTRKEY( "getMode" ), LFUNCVAL( lu8g_getMode ) }, { LSTRKEY( "getStrWidth" ), LFUNCVAL( lu8g_getStrWidth ) }, { LSTRKEY( "getWidth" ), LFUNCVAL( lu8g_getWidth ) }, { LSTRKEY( "nextPage" ), LFUNCVAL( lu8g_nextPage ) }, { LSTRKEY( "setColorIndex" ), LFUNCVAL( lu8g_setColorIndex ) }, { LSTRKEY( "setDefaultBackgroundColor" ), LFUNCVAL( lu8g_setDefaultBackgroundColor ) }, { LSTRKEY( "setDefaultForegroundColor" ), LFUNCVAL( lu8g_setDefaultForegroundColor ) }, { LSTRKEY( "setFont" ), LFUNCVAL( lu8g_setFont ) }, { LSTRKEY( "setFontLineSpacingFactor" ), LFUNCVAL( lu8g_setFontLineSpacingFactor ) }, { LSTRKEY( "setFontPosBaseline" ), LFUNCVAL( lu8g_setFontPosBaseline ) }, { LSTRKEY( "setFontPosBottom" ), LFUNCVAL( lu8g_setFontPosBottom ) }, { LSTRKEY( "setFontPosCenter" ), LFUNCVAL( lu8g_setFontPosCenter ) }, { LSTRKEY( "setFontPosTop" ), LFUNCVAL( lu8g_setFontPosTop ) }, { LSTRKEY( "setFontRefHeightAll" ), LFUNCVAL( lu8g_setFontRefHeightAll ) }, { LSTRKEY( "setFontRefHeightExtendedText" ), LFUNCVAL( lu8g_setFontRefHeightExtendedText ) }, { LSTRKEY( "setFontRefHeightText" ), LFUNCVAL( lu8g_setFontRefHeightText ) }, { LSTRKEY( "setRot90" ), LFUNCVAL( lu8g_setRot90 ) }, { LSTRKEY( "setRot180" ), LFUNCVAL( lu8g_setRot180 ) }, { LSTRKEY( "setRot270" ), LFUNCVAL( lu8g_setRot270 ) }, { LSTRKEY( "setScale2x2" ), LFUNCVAL( lu8g_setScale2x2 ) }, { LSTRKEY( "sleepOff" ), LFUNCVAL( lu8g_sleepOff ) }, { LSTRKEY( "sleepOn" ), LFUNCVAL( lu8g_sleepOn ) }, { LSTRKEY( "undoRotation" ), LFUNCVAL( lu8g_undoRotation ) }, { LSTRKEY( "undoScale" ), LFUNCVAL( lu8g_undoScale ) }, { LSTRKEY( "__gc" ), LFUNCVAL( lu8g_close_display ) }, { LSTRKEY( "__index" ), LROVAL( lu8g_display_map ) }, { LNILKEY, LNILVAL } }; #undef U8G_DISPLAY_TABLE_ENTRY #undef U8G_FONT_TABLE_ENTRY static const LUA_REG_TYPE lu8g_map[] = { #define U8G_DISPLAY_TABLE_ENTRY(device) \ { LSTRKEY( #device ), LFUNCVAL ( lu8g_ ##device ) }, U8G_DISPLAY_TABLE_I2C U8G_DISPLAY_TABLE_SPI // Register fonts #define U8G_FONT_TABLE_ENTRY(font) \ { LSTRKEY( #font ), LUDATA( (void *)(u8g_ ## font) ) }, U8G_FONT_TABLE // Options for circle/ ellipse drawing { LSTRKEY( "DRAW_UPPER_RIGHT" ), LNUMVAL( U8G_DRAW_UPPER_RIGHT ) }, { LSTRKEY( "DRAW_UPPER_LEFT" ), LNUMVAL( U8G_DRAW_UPPER_LEFT ) }, { LSTRKEY( "DRAW_LOWER_RIGHT" ), LNUMVAL( U8G_DRAW_LOWER_RIGHT ) }, { LSTRKEY( "DRAW_LOWER_LEFT" ), LNUMVAL( U8G_DRAW_LOWER_LEFT ) }, { LSTRKEY( "DRAW_ALL" ), LNUMVAL( U8G_DRAW_ALL ) }, // Display modes { LSTRKEY( "MODE_BW" ), LNUMVAL( U8G_MODE_BW ) }, { LSTRKEY( "MODE_GRAY2BIT" ), LNUMVAL( U8G_MODE_GRAY2BIT ) }, { LSTRKEY( "__metatable" ), LROVAL( lu8g_map ) }, { LNILKEY, LNILVAL } }; int luaopen_u8g( lua_State *L ) { luaL_rometatable(L, "u8g.display", (void *)lu8g_display_map); // create metatable return 0; } NODEMCU_MODULE(U8G, "u8g", lu8g_map, luaopen_u8g);