90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/**
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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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#include "../../../inc/MarlinConfig.h"
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#include <SPI.h>
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#include <lpc17xx_ssp.h>
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// #include <lpc17xx_gpdma.h>
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#define IS_SPI(N) (BOARD_NR_SPI >= N && (TFT_SCK_PIN == BOARD_SPI##N##_SCK_PIN) && (TFT_MOSI_PIN == BOARD_SPI##N##_MOSI_PIN) && (TFT_MISO_PIN == BOARD_SPI##N##_MISO_PIN))
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#if IS_SPI(1)
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#define TFT_SPI_DEVICE 1
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#define LPC_SSPx LPC_SSP0
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#elif IS_SPI(2)
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#define TFT_SPI_DEVICE 2
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#define LPC_SSPx LPC_SSP1
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#else
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#error "Invalid TFT SPI configuration."
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#endif
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#undef IS_SPI
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#ifndef LCD_READ_ID
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#define LCD_READ_ID 0x04 // Read display identification information (0xD3 on ILI9341)
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#endif
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#ifndef LCD_READ_ID4
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#define LCD_READ_ID4 0xD3 // Read display identification information (0xD3 on ILI9341)
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#endif
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#define DATASIZE_8BIT SSP_DATABIT_8
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#define DATASIZE_16BIT SSP_DATABIT_16
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#define TFT_IO_DRIVER TFT_SPI
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#define DMA_MAX_SIZE 0xFFF
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#define DMA_MINC_ENABLE 1
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#define DMA_MINC_DISABLE 0
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class TFT_SPI {
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private:
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static uint32_t ReadID(uint16_t Reg);
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static void Transmit(uint16_t Data);
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static void Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
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static void TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
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public:
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static SPIClass SPIx;
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static void Init();
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static uint32_t GetID();
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static bool isBusy();
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static void Abort();
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static void DataTransferBegin(uint16_t DataWidth = DATASIZE_16BIT);
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static void DataTransferEnd() { WRITE(TFT_CS_PIN, HIGH); SSP_Cmd(LPC_SSPx, DISABLE); };
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static void DataTransferAbort();
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static void WriteData(uint16_t Data) { Transmit(Data); }
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static void WriteReg(uint16_t Reg) { WRITE(TFT_DC_PIN, LOW); Transmit(Reg); WRITE(TFT_DC_PIN, HIGH); }
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static void WriteSequence_DMA(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_MINC_ENABLE, Data, Count); }
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static void WriteMultiple_DMA(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_MINC_DISABLE, &Data, Count); }
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static void WriteSequence(uint16_t *Data, uint16_t Count) { Transmit(DMA_MINC_ENABLE, Data, Count); }
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static void WriteMultiple(uint16_t Color, uint32_t Count) {
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while (Count > 0) {
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Transmit(DMA_MINC_DISABLE, &Color, Count > DMA_MAX_SIZE ? DMA_MAX_SIZE : Count);
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Count = Count > DMA_MAX_SIZE ? Count - DMA_MAX_SIZE : 0;
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}
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}
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};
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