Firmware for MAXREFES1265
Dependencies: max32625pico SerialInterface maxim-dev USBDevice
main.cpp
- Committer:
- venkik
- Date:
- 2020-05-05
- Revision:
- 0:4a433af35131
File content as of revision 0:4a433af35131:
/******************************************************************************* * Copyright (C) Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. *******************************************************************************/ //============================================================================== //This code is only suitable for single switch press not simultaneous switch press //The following code needs maxim-dev library to run. The complete package is available in the GITHUB //============================================================================== //Header files #include "mbed.h" #include "USBSerial.h" #include "max32625pico.h" #include "SerialInterface.h" const int Slave_address = 0x70; // MAX7360 I2C slave address const int max_key = 63; // Virtual serial port over USB USBSerial microUSB(0x0B6A, 0x4360); DigitalIn nINTK(P4_5); // Key switch interrupt configures as GPIO, refer to page 11 of DS for more info //The following line of code is optional and please uncomment if you are using rotary encoder //DigitalIn nINTI(P4_4); // Interrupt for rotary switch configuration, refer to page 14 for more info //The following line of code sets all the GPIO to 1.8 volts MAX32625PICO pico(MAX32625PICO::IOH_DIP_IN, MAX32625PICO::VIO_IOH, MAX32625PICO::VIO_1V8); // Serial Interfaces I2C i2c(P1_6, P1_7); int main() { //--------Register configuration for the MAX7360-------------------------------- //Please refer to page 10 and table 8 of the data sheet //Writing the configuration register (0x01) of MAX7360. char Datawrite_config[2]; Datawrite_config[0] = 0x01; //Address of the register Datawrite_config[1] = 0x20; //Configuring the register for Interrupt by making D5 to 1 and all the other bits to 0 i2c.write( Slave_address, Datawrite_config, 2 ); //Writing the Key switch interrupt register (0x03) MAX7360. //Please refer to table 10 of the data sheet //The interrupt register contains information related to the //settings of the interrupt request function, as well as the //status of the INTK output, which can also be configured //as a GPIO char Datawrite_Key_Switch_Interrupt[2]; Datawrite_Key_Switch_Interrupt[0] = 0x03; //Address of the register Datawrite_Key_Switch_Interrupt[1] = 0x08; //Configuring the TIME-BASED INTK bits to get 8 debounce cycles i2c.write( Slave_address, Datawrite_Key_Switch_Interrupt, 2 ); //Writing the auto sleep register (0x06)MAX7360 Autosleep Register no autosleep char Autosleep[2]; Autosleep[0] = 0x06; //Address of the register Autosleep[1] = 0x00; //AUTOSHUTDOWN TIME to no autosleep, refer to page 25 of DS i2c.write( Slave_address, Autosleep, 2 ); //Writing the GPIO Global Configuration (0x40) //Enable rotary encoder and normal GPIO operation char GlobalConfig[2]; GlobalConfig[0] = 0x40; //Address of the register GlobalConfig[1] = 0x90; //Enabling the I2C timeout interrupt and rotary switch by setting D7 and D5 to 1 and all others to zero i2c.write( Slave_address, GlobalConfig, 2 ); //============================================================================== //Uncomment below if you would like ot use rotary encoder //============================================================================== //Writing GPIO Control Register // char GPIOControl[2]; // GPIOControl[0] = 0x41; //Address // GPIOControl[1] = 0x3F; //Registrer configuration, All GPIOs configured as output, except ports 6 and 7, because they are connected to the rotary encoder // i2c.write( Slave_address, GPIOControl, 2 ); //Writing the Rotatory switch configuration (0x46). Please refer to table 20 of the data sheet // char Datawrite_Rotatory_Switch_configuration[2]; //Rotary Switch Configuration Register nINTI asserted 25ms after first debounced event, no debounce cycle time // Datawrite_Rotatory_Switch_configuration[0] = 0x46; // Datawrite_Rotatory_Switch_configuration[1] = 0x90; // Rotary Switch Configuration Register nINTI asserted 25ms after first debounced event, no debounce cycle time //Datawrite_Rotatory_Switch_configuration[1] = 0x11; // i2c.write( Slave_address, Datawrite_Rotatory_Switch_configuration, 2 ); /* // Writing PORT6 Configuration Register mask interrupt (0x5E) char Port6[2]; Port6[0] = 0x5E; // Address Port6[1] = 0x80;// masking the interrupt by enabling the D7 to 1 refer to page 30 of DS i2c.write( Slave_address, Port6, 2 ); // Writing PORT7 Configuration Register mask interrupt (0x5F) char Port7[2]; Port7[0] = 0x5F; //Address Port7[1] = 0x80; // masking of the interrupt by making D7 to 1 refer to page 30 of DS i2c.write( Slave_address, Port7, 2 ); */ //----------------------------------------------------------------------------- //Default register values //----------------------------------------------------------------------------- //writeMAX7360(0x02,0xFF);// Debounce Register only column 0 enabled, debounce set to 40ms // writeMAX7360(0x04,0xFE); // Ports Register // writeMAX7360(0x05,0x00); // Autorepeat Register // writeMAX7360(0x42,0x00); // GPIO Debounce Configuration Register // writeMAX7360(0x43,0xC0); // GPIO Constant-Current Setting Register // writeMAX7360(0x44,0x00); // GPIO Output Mode Register // writeMAX7360(0x45,0x00); // Common PWM Register //------------------End of Register configuration for MAX7360-----------------// while(1) { //Reading the Key FIFO register (0x00) from MAX7360. //Please refer to page 10 and table 7 of the data sheet char KeyFIFOData; char l = 0x00; i2c.write( Slave_address, &l, 1 ); i2c.read( Slave_address, &KeyFIFOData, 1 ); if(KeyFIFOData!= max_key) { microUSB.printf("KeyFIFOData = %d \n\r", KeyFIFOData); } // wait_ms(50); This may be necessary for console printing //============================================================================== //Uncomment the code below for rotary encoder //============================================================================== ////Reading the Rotatory switch count register (0x4A). Please refer to page 12 and table 23 of the data sheet // // char RotaryData; // char m = 0x4A; // if(!nINTI) { // i2c.write( Slave_address, &m, 1 ); // i2c.read( Slave_address, &RotaryData, 1 ); // // if(RotaryData!= 0) { // // microUSB.printf("RotaryData = %x \r\n", RotaryData); // } // // // wait_ms(100); This may be necessary for console printing // // } } }