71 lines
1.9 KiB
C
71 lines
1.9 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 <https://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 "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 I2C_MASTER_ID == 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 I2C_MASTER_ID == 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 I2C_MASTER_ID == 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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