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123 lines
4.2 KiB
123 lines
4.2 KiB
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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/**
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* lcd/extui/dgus/DGUSDisplay.h
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*/
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#include "../../../inc/MarlinConfigPre.h"
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#include <stdlib.h> // size_t
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#if HAS_BED_PROBE
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#include "../../../module/probe.h"
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#endif
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#include "DGUSVPVariable.h"
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enum DGUSLCD_Screens : uint8_t;
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//#define DEBUG_DGUSLCD
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#define DEBUG_OUT ENABLED(DEBUG_DGUSLCD)
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#include "../../../core/debug_out.h"
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typedef enum : uint8_t {
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DGUS_IDLE, //< waiting for DGUS_HEADER1.
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DGUS_HEADER1_SEEN, //< DGUS_HEADER1 received
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DGUS_HEADER2_SEEN, //< DGUS_HEADER2 received
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DGUS_WAIT_TELEGRAM, //< LEN received, Waiting for to receive all bytes.
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} rx_datagram_state_t;
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// Low-Level access to the display.
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class DGUSDisplay {
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public:
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DGUSDisplay() = default;
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static void InitDisplay();
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// Variable access.
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static void WriteVariable(uint16_t adr, const void *values, uint8_t valueslen, bool isstr=false);
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static void WriteVariablePGM(uint16_t adr, const void *values, uint8_t valueslen, bool isstr=false);
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static void WriteVariable(uint16_t adr, int16_t value);
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static void WriteVariable(uint16_t adr, uint16_t value);
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static void WriteVariable(uint16_t adr, uint8_t value);
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static void WriteVariable(uint16_t adr, int8_t value);
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static void WriteVariable(uint16_t adr, long value);
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static void MKS_WriteVariable(uint16_t adr, uint8_t value);
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// Utility functions for bridging ui_api and dbus
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template<typename T, float(*Getter)(const T), T selector, typename WireType=uint16_t>
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static void SetVariable(DGUS_VP_Variable &var) {
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WriteVariable(var.VP, (WireType)Getter(selector));
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}
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template<typename T, void(*Setter)(const float V, const T), T selector>
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static void GetVariable(DGUS_VP_Variable &var, void *val_ptr) {
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uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
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Setter(newvalue, selector);
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}
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// Until now I did not need to actively read from the display. That's why there is no ReadVariable
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// (I extensively use the auto upload of the display)
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// Force display into another screen.
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// (And trigger update of containing VPs)
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// (to implement a pop up message, which may not be nested)
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static void RequestScreen(DGUSLCD_Screens screen);
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// Periodic tasks, eg. Rx-Queue handling.
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static void loop();
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public:
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// Helper for users of this class to estimate if an interaction would be blocking.
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static size_t GetFreeTxBuffer();
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// Checks two things: Can we confirm the presence of the display and has we initialized it.
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// (both boils down that the display answered to our chatting)
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static bool isInitialized() { return Initialized; }
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private:
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static void WriteHeader(uint16_t adr, uint8_t cmd, uint8_t payloadlen);
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static void WritePGM(const char str[], uint8_t len);
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static void ProcessRx();
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static uint16_t swap16(const uint16_t value) { return (value & 0xFFU) << 8U | (value >> 8U); }
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static rx_datagram_state_t rx_datagram_state;
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static uint8_t rx_datagram_len;
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static bool Initialized, no_reentrance;
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};
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extern DGUSDisplay dgusdisplay;
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// compile-time x^y
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constexpr float cpow(const float x, const int y) { return y == 0 ? 1.0 : x * cpow(x, y - 1); }
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///
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const uint16_t* DGUSLCD_FindScreenVPMapList(uint8_t screen);
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/// Find the flash address of a DGUS_VP_Variable for the VP.
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const DGUS_VP_Variable* DGUSLCD_FindVPVar(const uint16_t vp);
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/// Helper to populate a DGUS_VP_Variable for a given VP. Return false if not found.
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bool populate_VPVar(const uint16_t VP, DGUS_VP_Variable * const ramcopy);
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