Firmware for MAXREFES1265
Dependencies: max32625pico SerialInterface maxim-dev USBDevice
Diff: main.cpp
- Revision:
- 0:4a433af35131
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue May 05 16:39:00 2020 +0000 @@ -0,0 +1,194 @@ +/******************************************************************************* +* 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 +// +// } + + } +} + + + + + + + + +