LPC1768: Allow I2C master channel override (#16584)
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@ -20,8 +20,10 @@
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*
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*/
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// adapted from I2C/master/master.c example
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// https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
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/**
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* digipot_mcp4451_I2C_routines.c
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* Adapted from https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
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*/
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#ifdef TARGET_LPC1768
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@ -29,12 +31,13 @@
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#if MB(MKS_SBASE)
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#include "digipot_mcp4451_I2C_routines.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "digipot_mcp4451_I2C_routines.h"
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#include "i2c_util.h"
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// These two routines are exact copies of the lpc17xx_i2c.c routines. Couldn't link to
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// to the lpc17xx_i2c.c routines so had to copy them into this file & rename them.
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@ -60,7 +63,6 @@ static void _I2C_Stop(LPC_I2C_TypeDef *I2Cx) {
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I2Cx->I2CONCLR = I2C_I2CONCLR_SIC;
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}
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PINSEL_CFG_Type PinCfg;
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I2C_M_SETUP_Type transferMCfg;
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#define I2C_status (LPC_I2C1->I2STAT & I2C_STAT_CODE_BITMASK)
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@ -89,41 +91,6 @@ uint8_t digipot_mcp4451_start(uint8_t sla) { // send slave address and write bi
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return 1;
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}
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void digipot_mcp4451_init() {
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/**
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* Init I2C pin connect
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*/
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PinCfg.OpenDrain = 0;
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PinCfg.Pinmode = 0;
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#if USEDI2CDEV_M == 0
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PinCfg.Funcnum = 1;
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PinCfg.Pinnum = 27;
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PinCfg.Portnum = 0;
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PINSEL_ConfigPin(&PinCfg); // SDA0 / D57 AUX-1
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PinCfg.Pinnum = 28;
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PINSEL_ConfigPin(&PinCfg); // 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;
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PinCfg.Portnum = 0;
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PINSEL_ConfigPin(&PinCfg); // SDA1 / D20 SCA
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PinCfg.Pinnum = 1;
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PINSEL_ConfigPin(&PinCfg); // 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;
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PinCfg.Portnum = 0;
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PINSEL_ConfigPin(&PinCfg); // SDA2 / D38 X_ENABLE_PIN
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PinCfg.Pinnum = 11;
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PINSEL_ConfigPin(&PinCfg); // SCL2 / D55 X_DIR_PIN
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#endif
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// Initialize I2C peripheral
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I2C_Init(I2CDEV_M, 400000); // hardwired to 400KHz bit rate, 100KHz is the other option
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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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uint8_t digipot_mcp4451_send_byte(uint8_t data) {
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LPC_I2C1->I2DAT = data & I2C_I2DAT_BITMASK; // transmit data
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LPC_I2C1->I2CONSET = I2C_I2CONSET_AA;
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@ -21,20 +21,10 @@
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*/
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#pragma once
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// adapted from I2C/master/master.c example
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// https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
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#define USEDI2CDEV_M 1 // use I2C1 controller
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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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/**
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* digipot_mcp4451_I2C_routines.h
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* Adapted from https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
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*/
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#ifdef __cplusplus
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extern "C" {
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@ -45,7 +35,6 @@
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#include <lpc17xx_libcfg_default.h>
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uint8_t digipot_mcp4451_start(uint8_t sla);
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void digipot_mcp4451_init();
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uint8_t digipot_mcp4451_send_byte(uint8_t data);
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#ifdef __cplusplus
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71
Marlin/src/HAL/HAL_LPC1768/include/i2c_util.c
Normal file
71
Marlin/src/HAL/HAL_LPC1768/include/i2c_util.c
Normal file
@ -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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46
Marlin/src/HAL/HAL_LPC1768/include/i2c_util.h
Normal file
46
Marlin/src/HAL/HAL_LPC1768/include/i2c_util.h
Normal file
@ -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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@ -31,19 +31,15 @@ extern int millis();
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extern "C" {
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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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#include "../include/i2c_util.h"
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#include "../../../core/millis_t.h"
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//////////////////////////////////////////////////////////////////////////////////////
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// These two routines are exact copies of the lpc17xx_i2c.c routines. Couldn't link to
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// to the lpc17xx_i2c.c routines so had to copy them into this file & rename them.
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static uint32_t _I2C_Start (LPC_I2C_TypeDef *I2Cx) {
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static uint32_t _I2C_Start(LPC_I2C_TypeDef *I2Cx) {
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// Reset STA, STO, SI
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I2Cx->I2CONCLR = I2C_I2CONCLR_SIC|I2C_I2CONCLR_STOC|I2C_I2CONCLR_STAC;
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@ -67,30 +63,16 @@ static void _I2C_Stop (LPC_I2C_TypeDef *I2Cx) {
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//////////////////////////////////////////////////////////////////////////////////////
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#define U8G_I2C_OPT_FAST 16 // from u8g.h
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#define USEDI2CDEV_M 1
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#define I2CDEV_S_ADDR 0x78 // from SSD1306 //actual address is 0x3C - shift left 1 with LSB set to 0 to indicate write
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#define BUFFER_SIZE 0x1 // only do single byte transfers with LCDs
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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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PINSEL_CFG_Type PinCfg;
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I2C_M_SETUP_Type transferMCfg;
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#define I2C_status (LPC_I2C1->I2STAT & I2C_STAT_CODE_BITMASK)
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uint8_t u8g_i2c_start(uint8_t sla) { // send slave address and write bit
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// Send slave address and write bit
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uint8_t u8g_i2c_start(const uint8_t sla) {
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// Sometimes TX data ACK or NAK status is returned. That mean the start state didn't
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// happen which means only the value of the slave address was send. Keep looping until
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// the slave address and write bit are actually sent.
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@ -114,44 +96,9 @@ uint8_t u8g_i2c_start(uint8_t sla) { // send slave address and write bit
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return 1;
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}
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void u8g_i2c_init(uint8_t clock_option) {
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/**
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* Init I2C pin connect
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*/
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PinCfg.OpenDrain = 0;
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PinCfg.Pinmode = 0;
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#if ((USEDI2CDEV_M == 0))
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PinCfg.Funcnum = 1;
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PinCfg.Pinnum = 27;
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PinCfg.Portnum = 0;
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PINSEL_ConfigPin(&PinCfg); // SDA0 / D57 AUX-1
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PinCfg.Pinnum = 28;
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PINSEL_ConfigPin(&PinCfg); // SCL0 / D58 AUX-1
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#endif
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#if ((USEDI2CDEV_M == 1))
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PinCfg.Funcnum = 3;
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PinCfg.Pinnum = 0;
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PinCfg.Portnum = 0;
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PINSEL_ConfigPin(&PinCfg); // SDA1 / D20 SCA
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PinCfg.Pinnum = 1;
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PINSEL_ConfigPin(&PinCfg); // SCL1 / D21 SCL
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#endif
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#if ((USEDI2CDEV_M == 2))
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PinCfg.Funcnum = 2;
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PinCfg.Pinnum = 10;
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PinCfg.Portnum = 0;
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PINSEL_ConfigPin(&PinCfg); // SDA2 / D38 X_ENABLE_PIN
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PinCfg.Pinnum = 11;
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PINSEL_ConfigPin(&PinCfg); // SCL2 / D55 X_DIR_PIN
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#endif
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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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u8g_i2c_start(0); // send slave address and write bit
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void u8g_i2c_init(const uint8_t clock_option) {
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configure_i2c(clock_option);
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u8g_i2c_start(0); // Send slave address and write bit
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}
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uint8_t u8g_i2c_send_byte(uint8_t data) {
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@ -21,8 +21,8 @@
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*/
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#pragma once
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void u8g_i2c_init(uint8_t options);
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uint8_t u8g_i2c_wait(uint8_t mask, uint8_t pos);
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void u8g_i2c_init(const uint8_t clock_options);
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//uint8_t u8g_i2c_wait(uint8_t mask, uint8_t pos);
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uint8_t u8g_i2c_start(uint8_t sla);
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uint8_t u8g_i2c_send_byte(uint8_t data);
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void u8g_i2c_stop();
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@ -86,8 +86,6 @@
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#define I2C_CMD_MODE 0x000
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#define I2C_DATA_MODE 0x040
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//#define U8G_I2C_OPT_FAST 16
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uint8_t u8g_com_ssd_I2C_start_sequence(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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@ -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.
|
||||
* 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 <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>
|
||||
|
||||
//void pinMode(int16_t pin, uint8_t mode);
|
||||
//void digitalWrite(int16_t pin, uint8_t pin_status);
|
||||
|
||||
|
||||
#define I2C_SLA (0x3C*2)
|
||||
//#define I2C_CMD_MODE 0x080
|
||||
#define I2C_CMD_MODE 0x000
|
||||
#define I2C_DATA_MODE 0x040
|
||||
|
||||
//static uint8_t I2C_speed; // 3 - 400KHz, 13 - 100KHz
|
||||
//#define SPEED_400KHz 3
|
||||
//#define SPEED_100KHz 13
|
||||
|
||||
// #define U8G_I2C_OPT_FAST 16
|
||||
|
||||
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;
|
||||
|
||||
#define SPI_SPEED 2 //20: 200KHz 5:750KHz 2:3-4MHz
|
||||
|
||||
uint8_t u8g_i2c_send_byte_sw(uint8_t data) {
|
||||
for (uint8_t i = 0; i < 9; i++) { // 1 extra bit for the ack/nak
|
||||
|
||||
if (val & 0x80)
|
||||
for (uint8_t j = 0; j < SPI_SPEED; j++) {
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
}
|
||||
else
|
||||
for (uint8_t j = 0; j < SPI_SPEED; j++) {
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
}
|
||||
|
||||
for (uint8_t j = 0; j < SPI_SPEED; j++) {
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
}
|
||||
|
||||
for (uint8_t j = 0; j < SPI_SPEED; j++) {
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
}
|
||||
val <<= 1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
uint8_t u8g_i2c_start_sw(uint8_t sla) { // assert start condition and then send slave address with write bit
|
||||
/* send the start condition, both lines go from 1 to 0 */
|
||||
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
DELAY_US(2);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
DELAY_US(2);
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOSET = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
DELAY_US(2);
|
||||
LPC_GPIO(SDA_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SDA_pin_HAL_LPC1768_sw_I2C);
|
||||
DELAY_US(2);
|
||||
LPC_GPIO(SCL_port_HAL_LPC1768_sw_I2C)->FIOCLR = LPC_PIN(SCL_pin_HAL_LPC1768_sw_I2C);
|
||||
|
||||
u8g_i2c_send_byte_sw(I2C_SLA); // send slave address with write bit
|
||||
}
|
||||
|
||||
|
||||
void u8g_i2c_stop_sw() { }
|
||||
|
||||
void u8g_i2c_init_sw(uint8_t clock_option) { u8g_i2c_start(0); } // send slave address and write bit
|
||||
|
||||
uint8_t u8g_com_ssd_I2C_start_sequence_sw(u8g_t *u8g) {
|
||||
/* are we requested to set the a0 state? */
|
||||
if (u8g->pin_list[U8G_PI_SET_A0] == 0) return 1;
|
||||
|
||||
/* setup bus, might be a repeated start */
|
||||
if (u8g_i2c_start(I2C_SLA) == 0) return 0;
|
||||
if (u8g->pin_list[U8G_PI_A0_STATE] == 0) {
|
||||
if (u8g_i2c_send_byte(I2C_CMD_MODE) == 0) return 0;
|
||||
}
|
||||
else if (u8g_i2c_send_byte(I2C_DATA_MODE) == 0) return 0;
|
||||
|
||||
u8g->pin_list[U8G_PI_SET_A0] = 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
uint8_t u8g_com_HAL_LPC1768_ssd_sw_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
|
||||
switch (msg) {
|
||||
case U8G_COM_MSG_INIT:
|
||||
|
||||
#define LPC1768_PIN_PORT(pin) ((uint8_t)((pin >> 5) & 0b111))
|
||||
#define LPC1768_PIN_PIN(pin) ((uint8_t)(pin & 0b11111))
|
||||
SCL_pin_HAL_LPC1768_sw_I2C = LPC1768_PIN_PIN(u8g->pin_list[U8G_PI_SCL]);
|
||||
SCL_port_HAL_LPC1768_sw_I2C = LPC1768_PIN_PORT(u8g->pin_list[U8G_PI_SCL]);
|
||||
SDA_pin_HAL_LPC1768_sw_I2C = LPC1768_PIN_PIN(u8g->pin_list[U8G_PI_SDA]);
|
||||
SDA_port_HAL_LPC1768_sw_I2C = LPC1768_PIN_PORT(u8g->pin_list[U8G_PI_SDA]);
|
||||
// As defined by Arduino INPUT(0x0), OUTPUT(0x1), INPUT_PULLUP(0x2)
|
||||
#define OUTPUT 0x1
|
||||
u8g_SetPIOutput(u8g, U8G_PI_SCL);
|
||||
u8g_SetPIOutput(u8g, U8G_PI_SDA);
|
||||
if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_CS]) u8g_SetPIOutput(u8g, U8G_PI_CS);
|
||||
if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_A0]) u8g_SetPIOutput(u8g, U8G_PI_A0);
|
||||
if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_RESET]) u8g_SetPIOutput(u8g, U8G_PI_RESET);
|
||||
|
||||
//u8g_com_arduino_digital_write(u8g, U8G_PI_SCL, HIGH);
|
||||
//u8g_com_arduino_digital_write(u8g, U8G_PI_SDA, HIGH);
|
||||
//u8g->pin_list[U8G_PI_A0_STATE] = 0; /* initial RS state: unknown mode */
|
||||
|
||||
u8g_i2c_init_sw(u8g->pin_list[U8G_PI_I2C_OPTION]);
|
||||
u8g_com_ssd_I2C_start_sequence_sw(u8g);
|
||||
break;
|
||||
|
||||
case U8G_COM_MSG_STOP: break;
|
||||
|
||||
case U8G_COM_MSG_RESET: break;
|
||||
|
||||
case U8G_COM_MSG_CHIP_SELECT:
|
||||
u8g->pin_list[U8G_PI_A0_STATE] = 0;
|
||||
u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again, also forces start condition */
|
||||
if (arg_val == 0) {
|
||||
/* disable chip, send stop condition */
|
||||
u8g_i2c_stop_sw();
|
||||
}
|
||||
else {
|
||||
/* enable, do nothing: any byte writing will trigger the i2c start */
|
||||
}
|
||||
break;
|
||||
|
||||
case U8G_COM_MSG_WRITE_BYTE:
|
||||
//u8g->pin_list[U8G_PI_SET_A0] = 1;
|
||||
//if (u8g_com_arduino_ssd_start_sequence(u8g) == 0)
|
||||
// return u8g_i2c_stop(), 0;
|
||||
if (u8g_i2c_send_byte_sw(arg_val) == 0)
|
||||
return u8g_i2c_stop_sw(), 0;
|
||||
// u8g_i2c_stop();
|
||||
break;
|
||||
|
||||
case U8G_COM_MSG_WRITE_SEQ: {
|
||||
//u8g->pin_list[U8G_PI_SET_A0] = 1;
|
||||
if (u8g_com_ssd_I2C_start_sequence_sw(u8g) == 0)
|
||||
return u8g_i2c_stop_sw(), 0;
|
||||
|
||||
uint8_t *ptr = (uint8_t *)arg_ptr;
|
||||
while (arg_val > 0) {
|
||||
if (u8g_i2c_send_byte_sw(*ptr++) == 0)
|
||||
return u8g_i2c_stop_sw(), 0;
|
||||
arg_val--;
|
||||
}
|
||||
}
|
||||
// u8g_i2c_stop();
|
||||
break;
|
||||
|
||||
case U8G_COM_MSG_WRITE_SEQ_P: {
|
||||
//u8g->pin_list[U8G_PI_SET_A0] = 1;
|
||||
if (u8g_com_ssd_I2C_start_sequence_sw(u8g) == 0)
|
||||
return u8g_i2c_stop_sw(), 0;
|
||||
|
||||
uint8_t *ptr = (uint8_t *)arg_ptr;
|
||||
while (arg_val > 0) {
|
||||
if (u8g_i2c_send_byte_sw(u8g_pgm_read(ptr)) == 0) return 0;
|
||||
ptr++;
|
||||
arg_val--;
|
||||
}
|
||||
}
|
||||
// u8g_i2c_stop();
|
||||
break;
|
||||
|
||||
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
|
||||
u8g->pin_list[U8G_PI_A0_STATE] = arg_val;
|
||||
u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again */
|
||||
u8g_i2c_start_sw(0); // send slave address and write bit
|
||||
u8g_i2c_send_byte_sw(arg_val ? 0x40 : 0x80); // Write to ? Graphics DRAM mode : Command mode
|
||||
break;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
#endif // HAS_GRAPHICAL_LCD
|
||||
|
||||
#endif // TARGET_LPC1768
|
@ -47,7 +47,7 @@ static byte current_to_wiper(const float current) {
|
||||
return byte(CEIL(float((DIGIPOT_I2C_FACTOR * current))));
|
||||
}
|
||||
|
||||
static void i2c_send(const byte addr, const byte a, const byte b) {
|
||||
static void digipot_i2c_send(const byte addr, const byte a, const byte b) {
|
||||
#if MB(MKS_SBASE)
|
||||
digipot_mcp4451_start(addr);
|
||||
digipot_mcp4451_send_byte(a);
|
||||
@ -67,17 +67,17 @@ void digipot_i2c_set_current(const uint8_t channel, const float current) {
|
||||
const byte addr = channel < 4 ? DIGIPOT_I2C_ADDRESS_A : DIGIPOT_I2C_ADDRESS_B; // channel 0-3 vs 4-7
|
||||
|
||||
// Initial setup
|
||||
i2c_send(addr, 0x40, 0xFF);
|
||||
i2c_send(addr, 0xA0, 0xFF);
|
||||
digipot_i2c_send(addr, 0x40, 0xFF);
|
||||
digipot_i2c_send(addr, 0xA0, 0xFF);
|
||||
|
||||
// Set actual wiper value
|
||||
byte addresses[4] = { 0x00, 0x10, 0x60, 0x70 };
|
||||
i2c_send(addr, addresses[channel & 0x3], current_to_wiper(_MIN(float(_MAX(current, 0)), DIGIPOT_I2C_MAX_CURRENT)));
|
||||
digipot_i2c_send(addr, addresses[channel & 0x3], current_to_wiper(_MIN(float(_MAX(current, 0)), DIGIPOT_I2C_MAX_CURRENT)));
|
||||
}
|
||||
|
||||
void digipot_i2c_init() {
|
||||
#if MB(MKS_SBASE)
|
||||
digipot_mcp4451_init();
|
||||
configure_i2c();
|
||||
#else
|
||||
Wire.begin();
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user