193 lines
6.3 KiB
C++
193 lines
6.3 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 <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* Based on u8g_com_st7920_hw_spi.c
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*
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* Universal 8bit Graphics Library
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*
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* Copyright (c) 2011, olikraus@gmail.com
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(ARDUINO) && !defined(ARDUINO_ARCH_STM32) && !defined(ARDUINO_ARCH_SAM)
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#include "../../inc/MarlinConfigPre.h"
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#if HAS_GRAPHICAL_LCD
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#include "../shared/Marduino.h"
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#include "../shared/Delay.h"
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#include <U8glib.h>
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uint8_t u8g_bitData, u8g_bitNotData, u8g_bitClock, u8g_bitNotClock;
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volatile uint8_t *u8g_outData, *u8g_outClock;
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static void u8g_com_arduino_init_shift_out(uint8_t dataPin, uint8_t clockPin) {
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u8g_outData = portOutputRegister(digitalPinToPort(dataPin));
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u8g_outClock = portOutputRegister(digitalPinToPort(clockPin));
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u8g_bitData = digitalPinToBitMask(dataPin);
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u8g_bitClock = digitalPinToBitMask(clockPin);
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u8g_bitNotClock = u8g_bitClock;
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u8g_bitNotClock ^= 0xFF;
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u8g_bitNotData = u8g_bitData;
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u8g_bitNotData ^= 0xFF;
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}
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void u8g_spiSend_sw_AVR_mode_0(uint8_t val) {
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uint8_t bitData = u8g_bitData,
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bitNotData = u8g_bitNotData,
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bitClock = u8g_bitClock,
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bitNotClock = u8g_bitNotClock;
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volatile uint8_t *outData = u8g_outData,
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*outClock = u8g_outClock;
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U8G_ATOMIC_START();
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LOOP_L_N(i, 8) {
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if (val & 0x80)
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*outData |= bitData;
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else
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*outData &= bitNotData;
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*outClock |= bitClock;
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val <<= 1;
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*outClock &= bitNotClock;
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}
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U8G_ATOMIC_END();
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}
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void u8g_spiSend_sw_AVR_mode_3(uint8_t val) {
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uint8_t bitData = u8g_bitData,
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bitNotData = u8g_bitNotData,
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bitClock = u8g_bitClock,
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bitNotClock = u8g_bitNotClock;
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volatile uint8_t *outData = u8g_outData,
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*outClock = u8g_outClock;
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U8G_ATOMIC_START();
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LOOP_L_N(i, 8) {
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*outClock &= bitNotClock;
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if (val & 0x80)
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*outData |= bitData;
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else
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*outData &= bitNotData;
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*outClock |= bitClock;
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val <<= 1;
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}
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U8G_ATOMIC_END();
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}
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#if ENABLED(FYSETC_MINI_12864)
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#define SPISEND_SW_AVR u8g_spiSend_sw_AVR_mode_3
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#else
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#define SPISEND_SW_AVR u8g_spiSend_sw_AVR_mode_0
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#endif
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uint8_t u8g_com_HAL_AVR_sw_sp_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
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switch (msg) {
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case U8G_COM_MSG_INIT:
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u8g_com_arduino_init_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK]);
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u8g_com_arduino_assign_pin_output_high(u8g);
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u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, 0);
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u8g_com_arduino_digital_write(u8g, U8G_PI_MOSI, 0);
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break;
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case U8G_COM_MSG_STOP:
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break;
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case U8G_COM_MSG_RESET:
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if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_RESET]) u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
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break;
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case U8G_COM_MSG_CHIP_SELECT:
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#if ENABLED(FYSETC_MINI_12864) // LCD SPI is running mode 3 while SD card is running mode 0
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if (arg_val) { // SCK idle state needs to be set to the proper idle state before
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// the next chip select goes active
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u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, 1); // Set SCK to mode 3 idle state before CS goes active
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u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
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}
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else {
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u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
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u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, 0); // Set SCK to mode 0 idle state after CS goes inactive
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}
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#else
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u8g_com_arduino_digital_write(u8g, U8G_PI_CS, !arg_val);
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#endif
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break;
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case U8G_COM_MSG_WRITE_BYTE:
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SPISEND_SW_AVR(arg_val);
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break;
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case U8G_COM_MSG_WRITE_SEQ: {
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uint8_t *ptr = (uint8_t *)arg_ptr;
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while (arg_val > 0) {
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SPISEND_SW_AVR(*ptr++);
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arg_val--;
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}
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}
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break;
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case U8G_COM_MSG_WRITE_SEQ_P: {
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uint8_t *ptr = (uint8_t *)arg_ptr;
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while (arg_val > 0) {
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SPISEND_SW_AVR(u8g_pgm_read(ptr));
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ptr++;
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arg_val--;
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}
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}
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break;
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case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
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u8g_com_arduino_digital_write(u8g, U8G_PI_A0, arg_val);
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break;
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}
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return 1;
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}
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#endif // HAS_GRAPHICAL_LCD
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#endif // ARDUINO_ARCH_SAM
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