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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- #include "../../../inc/MarlinConfig.h"
-
- #include <SPI.h>
- #include <lpc17xx_ssp.h>
- // #include <lpc17xx_gpdma.h>
-
- #ifndef LCD_READ_ID
- #define LCD_READ_ID 0x04 // Read display identification information (0xD3 on ILI9341)
- #endif
- #ifndef LCD_READ_ID4
- #define LCD_READ_ID4 0xD3 // Read display identification information (0xD3 on ILI9341)
- #endif
-
- #define DATASIZE_8BIT SSP_DATABIT_8
- #define DATASIZE_16BIT SSP_DATABIT_16
- #define TFT_IO_DRIVER TFT_SPI
-
- #define DMA_MINC_ENABLE 1
- #define DMA_MINC_DISABLE 0
-
- class TFT_SPI {
- private:
- static uint32_t ReadID(uint16_t Reg);
- static void Transmit(uint16_t Data);
- static void TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
-
- public:
- static SPIClass SPIx;
-
- static void Init();
- static uint32_t GetID();
- static bool isBusy();
- static void Abort();
-
- static void DataTransferBegin(uint16_t DataWidth = DATASIZE_16BIT);
- static void DataTransferEnd() { OUT_WRITE(TFT_CS_PIN, HIGH); SPIx.end(); };
- static void DataTransferAbort();
-
- static void WriteData(uint16_t Data) { Transmit(Data); }
- static void WriteReg(uint16_t Reg) { OUT_WRITE(TFT_A0_PIN, LOW); Transmit(Reg); OUT_WRITE(TFT_A0_PIN, HIGH); }
-
- static void WriteSequence(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_MINC_ENABLE, Data, Count); }
- // static void WriteMultiple(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_MINC_DISABLE, &Data, Count); }
- static void WriteMultiple(uint16_t Color, uint32_t Count) {
- static uint16_t Data; Data = Color;
- //LPC dma can only write 0xFFF bytes at once.
- #define MAX_DMA_SIZE (0xFFF - 1)
- while (Count > 0) {
- TransmitDMA(DMA_MINC_DISABLE, &Data, Count > MAX_DMA_SIZE ? MAX_DMA_SIZE : Count);
- Count = Count > MAX_DMA_SIZE ? Count - MAX_DMA_SIZE : 0;
- }
- #undef MAX_DMA_SIZE
- }
- };
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