TFT (plus Hardware SPI) for LPC (#19139)
This commit is contained in:
Victor Oliveira
GitHub
153
Marlin/src/HAL/LPC1768/tft/tft_spi.cpp
Normal file
153
Marlin/src/HAL/LPC1768/tft/tft_spi.cpp
Normal file
@ -0,0 +1,153 @@
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/**
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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/>.
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*
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*/
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#include "../../../inc/MarlinConfig.h"
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#if HAS_SPI_TFT
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#include "tft_spi.h"
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//TFT_SPI tft;
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SPIClass TFT_SPI::SPIx(1);
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#define TFT_CS_H WRITE(TFT_CS_PIN, HIGH)
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#define TFT_CS_L WRITE(TFT_CS_PIN, LOW)
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#define TFT_DC_H WRITE(TFT_DC_PIN, HIGH)
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#define TFT_DC_L WRITE(TFT_DC_PIN, LOW)
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#define TFT_RST_H WRITE(TFT_RESET_PIN, HIGH)
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#define TFT_RST_L WRITE(TFT_RESET_PIN, LOW)
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#define TFT_BLK_H WRITE(TFT_BACKLIGHT_PIN, HIGH)
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#define TFT_BLK_L WRITE(TFT_BACKLIGHT_PIN, LOW)
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void TFT_SPI::Init() {
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#if PIN_EXISTS(TFT_RESET)
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SET_OUTPUT(TFT_RESET_PIN);
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TFT_RST_H;
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delay(100);
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#endif
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#if PIN_EXISTS(TFT_BACKLIGHT)
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SET_OUTPUT(TFT_BACKLIGHT_PIN);
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TFT_BLK_H;
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#endif
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SET_OUTPUT(TFT_DC_PIN);
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SET_OUTPUT(TFT_CS_PIN);
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TFT_DC_H;
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TFT_CS_H;
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/**
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* STM32F1 APB2 = 72MHz, APB1 = 36MHz, max SPI speed of this MCU if 18Mhz
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* STM32F1 has 3 SPI ports, SPI1 in APB2, SPI2/SPI3 in APB1
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* so the minimum prescale of SPI1 is DIV4, SPI2/SPI3 is DIV2
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*/
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#if 0
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#if SPI_DEVICE == 1
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#define SPI_CLOCK_MAX SPI_CLOCK_DIV4
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#else
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#define SPI_CLOCK_MAX SPI_CLOCK_DIV2
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#endif
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uint8_t clock;
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uint8_t spiRate = SPI_FULL_SPEED;
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switch (spiRate) {
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case SPI_FULL_SPEED: clock = SPI_CLOCK_MAX ; break;
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case SPI_HALF_SPEED: clock = SPI_CLOCK_DIV4 ; break;
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case SPI_QUARTER_SPEED: clock = SPI_CLOCK_DIV8 ; break;
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case SPI_EIGHTH_SPEED: clock = SPI_CLOCK_DIV16; break;
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case SPI_SPEED_5: clock = SPI_CLOCK_DIV32; break;
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case SPI_SPEED_6: clock = SPI_CLOCK_DIV64; break;
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default: clock = SPI_CLOCK_DIV2; // Default from the SPI library
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}
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#endif
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#if TFT_MISO_PIN == BOARD_SPI1_MISO_PIN
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SPIx.setModule(1);
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#elif TFT_MISO_PIN == BOARD_SPI2_MISO_PIN
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SPIx.setModule(2);
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#endif
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SPIx.setClock(SPI_CLOCK_MAX);
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SPIx.setBitOrder(MSBFIRST);
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SPIx.setDataMode(SPI_MODE0);
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}
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void TFT_SPI::DataTransferBegin(uint16_t DataSize) {
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SPIx.setDataSize(DataSize);
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SPIx.begin();
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TFT_CS_L;
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}
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uint32_t TFT_SPI::GetID() {
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uint32_t id;
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id = ReadID(LCD_READ_ID);
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if ((id & 0xFFFF) == 0 || (id & 0xFFFF) == 0xFFFF)
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id = ReadID(LCD_READ_ID4);
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return id;
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}
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uint32_t TFT_SPI::ReadID(uint16_t Reg) {
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uint32_t data = 0;
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#if PIN_EXISTS(TFT_MISO)
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uint8_t d = 0;
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SPIx.setDataSize(DATASIZE_8BIT);
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SPIx.setClock(SPI_CLOCK_DIV64);
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SPIx.begin();
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TFT_CS_L;
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WriteReg(Reg);
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LOOP_L_N(i, 4) {
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SPIx.read((uint8_t*)&d, 1);
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data = (data << 8) | d;
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}
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DataTransferEnd();
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SPIx.setClock(SPI_CLOCK_MAX);
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#endif
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return data >> 7;
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}
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bool TFT_SPI::isBusy() {
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return false;
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}
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void TFT_SPI::Abort() {
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DataTransferEnd();
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}
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void TFT_SPI::Transmit(uint16_t Data) {
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SPIx.transfer(Data);
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}
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void TFT_SPI::TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
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DataTransferBegin(DATASIZE_16BIT); //16
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TFT_DC_H;
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SPIx.dmaSend(Data, Count, MemoryIncrease);
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DataTransferEnd();
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}
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#endif // HAS_SPI_TFT
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77
Marlin/src/HAL/LPC1768/tft/tft_spi.h
Normal file
77
Marlin/src/HAL/LPC1768/tft/tft_spi.h
Normal file
@ -0,0 +1,77 @@
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/**
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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/>.
|
||||
*
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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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#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 TFT_SPI
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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 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() { OUT_WRITE(TFT_CS_PIN, HIGH); SPIx.end(); };
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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) { OUT_WRITE(TFT_A0_PIN, LOW); Transmit(Reg); OUT_WRITE(TFT_A0_PIN, HIGH); }
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static void WriteSequence(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_MINC_ENABLE, Data, Count); }
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// static void WriteMultiple(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_MINC_DISABLE, &Data, Count); }
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static void WriteMultiple(uint16_t Color, uint32_t Count) {
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static uint16_t Data; Data = Color;
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//LPC dma can only write 0xFFF bytes at once.
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#define MAX_DMA_SIZE (0xFFF - 1)
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while (Count > 0) {
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TransmitDMA(DMA_MINC_DISABLE, &Data, Count > MAX_DMA_SIZE ? MAX_DMA_SIZE : Count);
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Count = Count > MAX_DMA_SIZE ? Count - MAX_DMA_SIZE : 0;
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}
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#undef MAX_DMA_SIZE
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}
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};
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129
Marlin/src/HAL/LPC1768/tft/xpt2046.cpp
Normal file
129
Marlin/src/HAL/LPC1768/tft/xpt2046.cpp
Normal file
@ -0,0 +1,129 @@
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/**
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* Marlin 3D Printer Firmware
|
||||
* Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
||||
*
|
||||
* 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/>.
|
||||
*
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*/
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#include "../../../inc/MarlinConfig.h"
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#if HAS_TFT_XPT2046 || HAS_TOUCH_XPT2046
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#include "xpt2046.h"
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#include <SPI.h>
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uint16_t delta(uint16_t a, uint16_t b) { return a > b ? a - b : b - a; }
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#if ENABLED(TOUCH_BUTTONS_HW_SPI)
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#include <SPI.h>
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SPIClass XPT2046::SPIx(TOUCH_BUTTONS_HW_SPI_DEVICE);
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static void touch_spi_init(uint8_t spiRate) {
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XPT2046::SPIx.setModule(TOUCH_BUTTONS_HW_SPI_DEVICE);
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XPT2046::SPIx.setClock(SPI_CLOCK_DIV128);
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XPT2046::SPIx.setBitOrder(MSBFIRST);
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XPT2046::SPIx.setDataMode(SPI_MODE0);
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XPT2046::SPIx.setDataSize(DATA_SIZE_8BIT);
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}
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#endif
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void XPT2046::Init() {
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SET_INPUT(TOUCH_MISO_PIN);
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SET_OUTPUT(TOUCH_MOSI_PIN);
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SET_OUTPUT(TOUCH_SCK_PIN);
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OUT_WRITE(TOUCH_CS_PIN, HIGH);
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#if PIN_EXISTS(TOUCH_INT)
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// Optional Pendrive interrupt pin
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SET_INPUT(TOUCH_INT_PIN);
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#endif
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TERN_(TOUCH_BUTTONS_HW_SPI, touch_spi_init(SPI_SPEED_6));
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// Read once to enable pendrive status pin
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getRawData(XPT2046_X);
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}
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bool XPT2046::isTouched() {
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return isBusy() ? false : (
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#if PIN_EXISTS(TOUCH_INT)
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READ(TOUCH_INT_PIN) != HIGH
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#else
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getRawData(XPT2046_Z1) >= XPT2046_Z1_THRESHOLD
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#endif
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);
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}
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bool XPT2046::getRawPoint(int16_t *x, int16_t *y) {
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if (isBusy()) return false;
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if (!isTouched()) return false;
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*x = getRawData(XPT2046_X);
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*y = getRawData(XPT2046_Y);
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SERIAL_ECHOLNPAIR("X: ", *x, ", Y: ", *y);
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return isTouched();
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}
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uint16_t XPT2046::getRawData(const XPTCoordinate coordinate) {
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uint16_t data[3];
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DataTransferBegin();
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TERN_(TOUCH_BUTTONS_HW_SPI, SPIx.begin());
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for (uint16_t i = 0; i < 3 ; i++) {
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IO(coordinate);
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data[i] = (IO() << 4) | (IO() >> 4);
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}
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TERN_(TOUCH_BUTTONS_HW_SPI, SPIx.end());
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DataTransferEnd();
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uint16_t delta01 = delta(data[0], data[1]),
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delta02 = delta(data[0], data[2]),
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delta12 = delta(data[1], data[2]);
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if (delta01 > delta02 || delta01 > delta12)
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data[delta02 > delta12 ? 0 : 1] = data[2];
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return (data[0] + data[1]) >> 1;
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}
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uint16_t XPT2046::IO(uint16_t data) {
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return TERN(TOUCH_BUTTONS_HW_SPI, HardwareIO, SoftwareIO)(data);
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}
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extern uint8_t spiTransfer(uint8_t b);
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#if ENABLED(TOUCH_BUTTONS_HW_SPI)
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uint16_t XPT2046::HardwareIO(uint16_t data) {
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return SPIx.transfer(data & 0xFF);
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}
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#endif
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uint16_t XPT2046::SoftwareIO(uint16_t data) {
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uint16_t result = 0;
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for (uint8_t j = 0x80; j; j >>= 1) {
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WRITE(TOUCH_SCK_PIN, LOW);
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WRITE(TOUCH_MOSI_PIN, data & j ? HIGH : LOW);
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if (READ(TOUCH_MISO_PIN)) result |= j;
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WRITE(TOUCH_SCK_PIN, HIGH);
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}
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WRITE(TOUCH_SCK_PIN, LOW);
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return result;
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}
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#endif // HAS_TFT_XPT2046
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80
Marlin/src/HAL/LPC1768/tft/xpt2046.h
Normal file
80
Marlin/src/HAL/LPC1768/tft/xpt2046.h
Normal file
@ -0,0 +1,80 @@
|
||||
/**
|
||||
* Marlin 3D Printer Firmware
|
||||
* Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
||||
*
|
||||
* 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"
|
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|
||||
#if ENABLED(TOUCH_BUTTONS_HW_SPI)
|
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#include <SPI.h>
|
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#endif
|
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|
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#ifndef TOUCH_MISO_PIN
|
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#define TOUCH_MISO_PIN MISO_PIN
|
||||
#endif
|
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#ifndef TOUCH_MOSI_PIN
|
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#define TOUCH_MOSI_PIN MOSI_PIN
|
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#endif
|
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#ifndef TOUCH_SCK_PIN
|
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#define TOUCH_SCK_PIN SCK_PIN
|
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#endif
|
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#ifndef TOUCH_CS_PIN
|
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#define TOUCH_CS_PIN CS_PIN
|
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#endif
|
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#ifndef TOUCH_INT_PIN
|
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#define TOUCH_INT_PIN -1
|
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#endif
|
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|
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#define XPT2046_DFR_MODE 0x00
|
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#define XPT2046_SER_MODE 0x04
|
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#define XPT2046_CONTROL 0x80
|
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|
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enum XPTCoordinate : uint8_t {
|
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XPT2046_X = 0x10 | XPT2046_CONTROL | XPT2046_DFR_MODE,
|
||||
XPT2046_Y = 0x50 | XPT2046_CONTROL | XPT2046_DFR_MODE,
|
||||
XPT2046_Z1 = 0x30 | XPT2046_CONTROL | XPT2046_DFR_MODE,
|
||||
XPT2046_Z2 = 0x40 | XPT2046_CONTROL | XPT2046_DFR_MODE,
|
||||
};
|
||||
|
||||
#if !defined(XPT2046_Z1_THRESHOLD)
|
||||
#define XPT2046_Z1_THRESHOLD 10
|
||||
#endif
|
||||
|
||||
class XPT2046 {
|
||||
private:
|
||||
static bool isBusy() { return false; }
|
||||
|
||||
static uint16_t getRawData(const XPTCoordinate coordinate);
|
||||
static bool isTouched();
|
||||
|
||||
static inline void DataTransferBegin() { WRITE(TOUCH_CS_PIN, LOW); };
|
||||
static inline void DataTransferEnd() { WRITE(TOUCH_CS_PIN, HIGH); };
|
||||
#if ENABLED(TOUCH_BUTTONS_HW_SPI)
|
||||
static uint16_t HardwareIO(uint16_t data);
|
||||
#endif
|
||||
static uint16_t SoftwareIO(uint16_t data);
|
||||
static uint16_t IO(uint16_t data = 0);
|
||||
|
||||
public:
|
||||
#if ENABLED(TOUCH_BUTTONS_HW_SPI)
|
||||
static SPIClass SPIx;
|
||||
#endif
|
||||
|
||||
static void Init();
|
||||
static bool getRawPoint(int16_t *x, int16_t *y);
|
||||
};
|
||||
Reference in New Issue
Block a user