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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
#ifdef STM32F1xx
#include "stm32f1xx_hal.h"
#elif defined(STM32F4xx)
#include "stm32f4xx_hal.h"
#else
#error SPI TFT is currently only supported on STM32F1 and STM32F4 hardware.
#endif
#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 SPI_DATASIZE_8BIT
#define DATASIZE_16BIT SPI_DATASIZE_16BIT
#define TFT_IO_DRIVER TFT_SPI
class TFT_SPI {
private:
static SPI_HandleTypeDef SPIx;
static DMA_HandleTypeDef DMAtx;
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 void Init();
static uint32_t GetID();
static bool isBusy();
static void Abort();
static void DataTransferBegin(uint16_t DataWidth = DATASIZE_16BIT);
static void DataTransferEnd() { WRITE(TFT_CS_PIN, HIGH); };
static void DataTransferAbort();
static void WriteData(uint16_t Data) { Transmit(Data); }
static void WriteReg(uint16_t Reg) { WRITE(TFT_A0_PIN, LOW); Transmit(Reg); 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;
while (Count > 0) {
TransmitDMA(DMA_MINC_DISABLE, &Data, Count > 0xFFFF ? 0xFFFF : Count);
Count = Count > 0xFFFF ? Count - 0xFFFF : 0;
}
}
};
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