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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/>.
- *
- */
-
- /**
- * Based on u8g_com_st7920_hw_spi.c
- *
- * Universal 8bit Graphics Library
- *
- * Copyright (c) 2011, olikraus@gmail.com
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice, this list
- * of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright notice, this
- * list of conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- #ifdef ARDUINO_ARCH_SAM
-
- #include "../../../inc/MarlinConfigPre.h"
-
- #if HAS_GRAPHICAL_LCD
-
- #include "../../shared/Delay.h"
-
- #include <U8glib.h>
-
- #include "u8g_com_HAL_DUE_sw_spi_shared.h"
-
- void u8g_SetPIOutput_DUE(u8g_t *u8g, uint8_t pin_index) {
- PIO_Configure(g_APinDescription[u8g->pin_list[pin_index]].pPort, PIO_OUTPUT_1,
- g_APinDescription[u8g->pin_list[pin_index]].ulPin, g_APinDescription[u8g->pin_list[pin_index]].ulPinConfiguration); // OUTPUT
- }
-
- void u8g_SetPILevel_DUE(u8g_t *u8g, uint8_t pin_index, uint8_t level) {
- volatile Pio* port = g_APinDescription[u8g->pin_list[pin_index]].pPort;
- uint32_t mask = g_APinDescription[u8g->pin_list[pin_index]].ulPin;
- if (level) port->PIO_SODR = mask; else port->PIO_CODR = mask;
- }
-
- Pio *SCK_pPio, *MOSI_pPio;
- uint32_t SCK_dwMask, MOSI_dwMask;
-
- void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
- LOOP_L_N(i, 8) {
- if (val & 0x80)
- MOSI_pPio->PIO_SODR = MOSI_dwMask;
- else
- MOSI_pPio->PIO_CODR = MOSI_dwMask;
- DELAY_NS(48);
- SCK_pPio->PIO_SODR = SCK_dwMask;
- DELAY_NS(905);
- val <<= 1;
- SCK_pPio->PIO_CODR = SCK_dwMask;
- }
- }
-
- void u8g_spiSend_sw_DUE_mode_3(uint8_t val) { // 3.5MHz
- LOOP_L_N(i, 8) {
- SCK_pPio->PIO_CODR = SCK_dwMask;
- DELAY_NS(50);
- if (val & 0x80)
- MOSI_pPio->PIO_SODR = MOSI_dwMask;
- else
- MOSI_pPio->PIO_CODR = MOSI_dwMask;
- val <<= 1;
- DELAY_NS(10);
- SCK_pPio->PIO_SODR = SCK_dwMask;
- DELAY_NS(70);
- }
- }
-
- #endif // HAS_GRAPHICAL_LCD
- #endif // ARDUINO_ARCH_SAM
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