LPC1768: Allow I2C master channel override (#16584)
0r31
5 years ago
committed by
Scott Lahteine
parent
0fcf2b1110
commit
451062553e
@ -0,0 +1,71 @@
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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 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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* HAL_LPC1768/include/i2c_util.c
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*/
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#ifdef TARGET_LPC1768
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#include "../../../inc/MarlinConfigPre.h"
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#include "i2c_util.h"
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#define U8G_I2C_OPT_FAST 16 // from u8g.h
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#ifdef __cplusplus
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extern "C" {
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#endif
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void configure_i2c(const uint8_t clock_option) {
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/**
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* Init I2C pin connect
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*/
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PINSEL_CFG_Type PinCfg;
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PinCfg.OpenDrain = 0;
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PinCfg.Pinmode = 0;
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PinCfg.Portnum = 0;
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#if USEDI2CDEV_M == 0
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PinCfg.Funcnum = 1;
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PinCfg.Pinnum = 27; // SDA0 / D57 AUX-1 ... SCL0 / D58 AUX-1
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#elif USEDI2CDEV_M == 1
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PinCfg.Funcnum = 3;
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PinCfg.Pinnum = 0; // SDA1 / D20 SCA ... SCL1 / D21 SCL
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#elif USEDI2CDEV_M == 2
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PinCfg.Funcnum = 2;
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PinCfg.Pinnum = 10; // SDA2 / D38 X_ENABLE_PIN ... SCL2 / D55 X_DIR_PIN
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#endif
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PINSEL_ConfigPin(&PinCfg);
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PinCfg.Pinnum += 1;
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PINSEL_ConfigPin(&PinCfg);
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// Initialize I2C peripheral
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I2C_Init(I2CDEV_M, (clock_option & U8G_I2C_OPT_FAST) ? 400000: 100000); // LCD data rates
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// Enable Master I2C operation
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I2C_Cmd(I2CDEV_M, I2C_MASTER_MODE, ENABLE);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // TARGET_LPC1768
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@ -0,0 +1,46 @@
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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 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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#pragma once
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/**
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* HAL_LPC1768/include/i2c_util.h
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*/
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#ifndef USEDI2CDEV_M
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#define USEDI2CDEV_M 1 // By default use I2C1 controller
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#endif
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#if USEDI2CDEV_M == 0
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#define I2CDEV_M LPC_I2C0
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#elif USEDI2CDEV_M == 1
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#define I2CDEV_M LPC_I2C1
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#elif USEDI2CDEV_M == 2
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#define I2CDEV_M LPC_I2C2
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#else
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#error "Master I2C device not defined!"
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#endif
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#include <lpc17xx_i2c.h>
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#include <lpc17xx_pinsel.h>
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#include <lpc17xx_libcfg_default.h>
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void configure_i2c(const uint8_t clock_option);
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@ -1,254 +0,0 @@
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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 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 U8G2 code - u8x8_byte.c
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*
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* Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
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*
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* Copyright (c) 2016, 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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/**
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* Software i2c,
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* ignores ACK response (which is anyway not provided by some displays)
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* also does not allow reading from the device
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*/
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#ifdef TARGET_LPC1768
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#include "../../inc/MarlinConfigPre.h"
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#if HAS_GRAPHICAL_LCD
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#include <U8glib.h>
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//void pinMode(int16_t pin, uint8_t mode);
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//void digitalWrite(int16_t pin, uint8_t pin_status);
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#define I2C_SLA (0x3C*2)
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//#define I2C_CMD_MODE 0x080
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#define I2C_CMD_MODE 0x000
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#define I2C_DATA_MODE 0x040
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//static uint8_t I2C_speed; // 3 - 400KHz, 13 - 100KHz
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//#define SPEED_400KHz 3
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//#define SPEED_100KHz 13
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// #define U8G_I2C_OPT_FAST 16
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uint8_t SCL_pin_HAL_LPC1768_sw_I2C, SCL_port_HAL_LPC1768_sw_I2C, SDA_pin_HAL_LPC1768_sw_I2C, SDA_port_HAL_LPC1768_sw_I2C;
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#define SPI_SPEED 2 //20: 200KHz 5:750KHz 2:3-4MHz
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uint8_t u8g_i2c_send_byte_sw(uint8_t data) {
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for (uint8_t i = 0; i < 9; i++) { // 1 extra bit for the ack/nak
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if (val & 0x80)
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for (uint8_t j = 0; j < SPI_SPEED; j++) {
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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}
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else
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for (uint8_t j = 0; j < SPI_SPEED; j++) {
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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}
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for (uint8_t j = 0; j < SPI_SPEED; j++) {
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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}
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for (uint8_t j = 0; j < SPI_SPEED; j++) {
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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}
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val <<= 1;
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}
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return 1;
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}
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uint8_t u8g_i2c_start_sw(uint8_t sla) { // assert start condition and then send slave address with write bit
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/* send the start condition, both lines go from 1 to 0 */
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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DELAY_US(2);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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DELAY_US(2);
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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DELAY_US(2);
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LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
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DELAY_US(2);
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LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
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u8g_i2c_send_byte_sw(I2C_SLA); // send slave address with write bit
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}
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void u8g_i2c_stop_sw() { }
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void u8g_i2c_init_sw(uint8_t clock_option) { u8g_i2c_start(0); } // send slave address and write bit
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uint8_t u8g_com_ssd_I2C_start_sequence_sw(u8g_t *u8g) {
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/* are we requested to set the a0 state? */
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if (u8g->pin_list[U8G_PI_SET_A0] == 0) return 1;
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/* setup bus, might be a repeated start */
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if (u8g_i2c_start(I2C_SLA) == 0) return 0;
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if (u8g->pin_list[U8G_PI_A0_STATE] == 0) {
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if (u8g_i2c_send_byte(I2C_CMD_MODE) == 0) return 0;
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}
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else if (u8g_i2c_send_byte(I2C_DATA_MODE) == 0) return 0;
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u8g->pin_list[U8G_PI_SET_A0] = 0;
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return 1;
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}
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uint8_t u8g_com_HAL_LPC1768_ssd_sw_i2c_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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#define LPC1768_PIN_PORT(pin) ((uint8_t)((pin >> 5) & 0b111))
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#define LPC1768_PIN_PIN(pin) ((uint8_t)(pin & 0b11111))
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SCL_pin_HAL_LPC1768_sw_I2C = LPC1768_PIN_PIN(u8g->pin_list[U8G_PI_SCL]);
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SCL_port_HAL_LPC1768_sw_I2C = LPC1768_PIN_PORT(u8g->pin_list[U8G_PI_SCL]);
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SDA_pin_HAL_LPC1768_sw_I2C = LPC1768_PIN_PIN(u8g->pin_list[U8G_PI_SDA]);
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SDA_port_HAL_LPC1768_sw_I2C = LPC1768_PIN_PORT(u8g->pin_list[U8G_PI_SDA]);
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// As defined by Arduino INPUT(0x0), OUTPUT(0x1), INPUT_PULLUP(0x2)
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#define OUTPUT 0x1
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u8g_SetPIOutput(u8g, U8G_PI_SCL);
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u8g_SetPIOutput(u8g, U8G_PI_SDA);
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if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_CS]) u8g_SetPIOutput(u8g, U8G_PI_CS);
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if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_A0]) u8g_SetPIOutput(u8g, U8G_PI_A0);
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if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_RESET]) u8g_SetPIOutput(u8g, U8G_PI_RESET);
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//u8g_com_arduino_digital_write(u8g, U8G_PI_SCL, HIGH);
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//u8g_com_arduino_digital_write(u8g, U8G_PI_SDA, HIGH);
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//u8g->pin_list[U8G_PI_A0_STATE] = 0; /* initial RS state: unknown mode */
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u8g_i2c_init_sw(u8g->pin_list[U8G_PI_I2C_OPTION]);
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u8g_com_ssd_I2C_start_sequence_sw(u8g);
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break;
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case U8G_COM_MSG_STOP: break;
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case U8G_COM_MSG_RESET: break;
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case U8G_COM_MSG_CHIP_SELECT:
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u8g->pin_list[U8G_PI_A0_STATE] = 0;
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u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again, also forces start condition */
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if (arg_val == 0) {
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/* disable chip, send stop condition */
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u8g_i2c_stop_sw();
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}
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else {
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/* enable, do nothing: any byte writing will trigger the i2c start */
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}
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break;
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case U8G_COM_MSG_WRITE_BYTE:
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//u8g->pin_list[U8G_PI_SET_A0] = 1;
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//if (u8g_com_arduino_ssd_start_sequence(u8g) == 0)
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// return u8g_i2c_stop(), 0;
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if (u8g_i2c_send_byte_sw(arg_val) == 0)
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return u8g_i2c_stop_sw(), 0;
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// u8g_i2c_stop();
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break;
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case U8G_COM_MSG_WRITE_SEQ: {
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//u8g->pin_list[U8G_PI_SET_A0] = 1;
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if (u8g_com_ssd_I2C_start_sequence_sw(u8g) == 0)
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return u8g_i2c_stop_sw(), 0;
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uint8_t *ptr = (uint8_t *)arg_ptr;
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while (arg_val > 0) {
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if (u8g_i2c_send_byte_sw(*ptr++) == 0)
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return u8g_i2c_stop_sw(), 0;
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arg_val--;
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}
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}
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// u8g_i2c_stop();
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break;
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case U8G_COM_MSG_WRITE_SEQ_P: {
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//u8g->pin_list[U8G_PI_SET_A0] = 1;
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if (u8g_com_ssd_I2C_start_sequence_sw(u8g) == 0)
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return u8g_i2c_stop_sw(), 0;
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uint8_t *ptr = (uint8_t *)arg_ptr;
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while (arg_val > 0) {
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if (u8g_i2c_send_byte_sw(u8g_pgm_read(ptr)) == 0) return 0;
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ptr++;
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arg_val--;
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}
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}
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// u8g_i2c_stop();
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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->pin_list[U8G_PI_A0_STATE] = arg_val;
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u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again */
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u8g_i2c_start_sw(0); // send slave address and write bit
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u8g_i2c_send_byte_sw(arg_val ? 0x40 : 0x80); // Write to ? Graphics DRAM mode : Command mode
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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 // TARGET_LPC1768
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