332 lines
11 KiB
C
332 lines
11 KiB
C
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2019.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2019 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Main source file for the TemperatureDataLogger project. This file contains the main tasks of
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* the project and is responsible for the initial application hardware configuration.
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*/
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#include "TempDataLogger.h"
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/** LUFA Mass Storage Class driver interface configuration and state information. This structure is
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* passed to all Mass Storage Class driver functions, so that multiple instances of the same class
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* within a device can be differentiated from one another.
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*/
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USB_ClassInfo_MS_Device_t Disk_MS_Interface =
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{
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.Config =
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{
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.InterfaceNumber = INTERFACE_ID_MassStorage,
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.DataINEndpoint =
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{
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.Address = MASS_STORAGE_IN_EPADDR,
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.Size = MASS_STORAGE_IO_EPSIZE,
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.Banks = 1,
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},
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.DataOUTEndpoint =
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{
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.Address = MASS_STORAGE_OUT_EPADDR,
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.Size = MASS_STORAGE_IO_EPSIZE,
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.Banks = 1,
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},
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.TotalLUNs = 1,
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},
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};
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/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
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static uint8_t PrevHIDReportBuffer[GENERIC_REPORT_SIZE];
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/** LUFA HID Class driver interface configuration and state information. This structure is
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* passed to all HID Class driver functions, so that multiple instances of the same class
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* within a device can be differentiated from one another.
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*/
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USB_ClassInfo_HID_Device_t Generic_HID_Interface =
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{
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.Config =
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{
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.InterfaceNumber = INTERFACE_ID_HID,
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.ReportINEndpoint =
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{
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.Address = GENERIC_IN_EPADDR,
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.Size = GENERIC_EPSIZE,
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.Banks = 1,
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},
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.PrevReportINBuffer = PrevHIDReportBuffer,
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.PrevReportINBufferSize = sizeof(PrevHIDReportBuffer),
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},
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};
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/** Non-volatile Logging Interval value in EEPROM, stored as a number of 500ms ticks */
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static uint8_t EEMEM LoggingInterval500MS_EEPROM = DEFAULT_LOG_INTERVAL;
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/** SRAM Logging Interval value fetched from EEPROM, stored as a number of 500ms ticks */
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static uint8_t LoggingInterval500MS_SRAM;
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/** Total number of 500ms logging ticks elapsed since the last log value was recorded */
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static uint16_t CurrentLoggingTicks;
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/** FAT Fs structure to hold the internal state of the FAT driver for the Dataflash contents. */
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static FATFS DiskFATState;
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/** FAT Fs structure to hold a FAT file handle for the log data write destination. */
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static FIL TempLogFile;
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/** ISR to handle the 500ms ticks for sampling and data logging */
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ISR(TIMER1_COMPA_vect, ISR_BLOCK)
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{
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/* Signal a 500ms tick has elapsed to the RTC */
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RTC_Tick500ms();
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/* Check to see if the logging interval has expired */
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if (++CurrentLoggingTicks < LoggingInterval500MS_SRAM)
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return;
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/* Reset log tick counter to prepare for next logging interval */
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CurrentLoggingTicks = 0;
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uint8_t LEDMask = LEDs_GetLEDs();
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LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
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/* Only log when not connected to a USB host */
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if (USB_DeviceState == DEVICE_STATE_Unattached)
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{
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TimeDate_t CurrentTimeDate;
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RTC_GetTimeDate(&CurrentTimeDate);
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char LineBuffer[100];
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uint16_t BytesWritten;
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BytesWritten = snprintf(LineBuffer, sizeof(LineBuffer), "%02d/%02d/20%02d, %02d:%02d:%02d, %d Degrees\r\n",
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CurrentTimeDate.Day, CurrentTimeDate.Month, CurrentTimeDate.Year,
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CurrentTimeDate.Hour, CurrentTimeDate.Minute, CurrentTimeDate.Second,
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Temperature_GetTemperature());
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f_write(&TempLogFile, LineBuffer, BytesWritten, &BytesWritten);
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f_sync(&TempLogFile);
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}
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LEDs_SetAllLEDs(LEDMask);
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}
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/** Main program entry point. This routine contains the overall program flow, including initial
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* setup of all components and the main program loop.
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*/
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int main(void)
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{
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SetupHardware();
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/* Fetch logging interval from EEPROM */
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LoggingInterval500MS_SRAM = eeprom_read_byte(&LoggingInterval500MS_EEPROM);
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/* Check if the logging interval is invalid (0xFF) indicating that the EEPROM is blank */
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if (LoggingInterval500MS_SRAM == 0xFF)
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LoggingInterval500MS_SRAM = DEFAULT_LOG_INTERVAL;
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/* Mount and open the log file on the Dataflash FAT partition */
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OpenLogFile();
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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GlobalInterruptEnable();
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for (;;)
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{
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MS_Device_USBTask(&Disk_MS_Interface);
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HID_Device_USBTask(&Generic_HID_Interface);
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USB_USBTask();
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}
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}
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/** Opens the log file on the Dataflash's FAT formatted partition according to the current date */
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void OpenLogFile(void)
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{
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char LogFileName[16];
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/* Get the current date for the filename as "DDMMYY.csv" */
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TimeDate_t CurrentTimeDate;
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RTC_GetTimeDate(&CurrentTimeDate);
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snprintf(LogFileName, sizeof(LogFileName), "%02d%02d%02d.csv", CurrentTimeDate.Day, CurrentTimeDate.Month, CurrentTimeDate.Year);
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/* Mount the storage device, open the file */
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f_mount(0, &DiskFATState);
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f_open(&TempLogFile, LogFileName, FA_OPEN_ALWAYS | FA_WRITE);
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f_lseek(&TempLogFile, TempLogFile.fsize);
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}
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/** Closes the open data log file on the Dataflash's FAT formatted partition */
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void CloseLogFile(void)
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{
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/* Sync any data waiting to be written, unmount the storage device */
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f_sync(&TempLogFile);
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f_close(&TempLogFile);
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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#if (ARCH == ARCH_AVR8)
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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#endif
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/* Hardware Initialization */
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LEDs_Init();
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ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_128);
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Temperature_Init();
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Dataflash_Init();
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USB_Init();
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TWI_Init(TWI_BIT_PRESCALE_4, TWI_BITLENGTH_FROM_FREQ(4, 50000));
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RTC_Init();
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/* 500ms logging interval timer configuration */
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OCR1A = (((F_CPU / 256) / 2) - 1);
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TCCR1B = (1 << WGM12) | (1 << CS12);
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TIMSK1 = (1 << OCIE1A);
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/* Check if the Dataflash is working, abort if not */
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if (!(DataflashManager_CheckDataflashOperation()))
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{
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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for(;;);
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}
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/* Clear Dataflash sector protections, if enabled */
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DataflashManager_ResetDataflashProtections();
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}
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/** Event handler for the library USB Connection event. */
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void EVENT_USB_Device_Connect(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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/* Close the log file so that the host has exclusive file system access */
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CloseLogFile();
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}
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/** Event handler for the library USB Disconnection event. */
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void EVENT_USB_Device_Disconnect(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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/* Mount and open the log file on the Dataflash FAT partition */
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OpenLogFile();
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}
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/** Event handler for the library USB Configuration Changed event. */
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void EVENT_USB_Device_ConfigurationChanged(void)
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{
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bool ConfigSuccess = true;
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ConfigSuccess &= HID_Device_ConfigureEndpoints(&Generic_HID_Interface);
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ConfigSuccess &= MS_Device_ConfigureEndpoints(&Disk_MS_Interface);
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LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
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}
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/** Event handler for the library USB Control Request reception event. */
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void EVENT_USB_Device_ControlRequest(void)
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{
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MS_Device_ProcessControlRequest(&Disk_MS_Interface);
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HID_Device_ProcessControlRequest(&Generic_HID_Interface);
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}
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/** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
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*
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* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface configuration structure being referenced
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*/
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bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
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{
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bool CommandSuccess;
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LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
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CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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return CommandSuccess;
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}
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/** HID class driver callback function for the creation of HID reports to the host.
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*
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* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
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* \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
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* \param[in] ReportType Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
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* \param[out] ReportData Pointer to a buffer where the created report should be stored
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* \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent)
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*
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* \return Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent
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*/
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bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
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uint8_t* const ReportID,
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const uint8_t ReportType,
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void* ReportData,
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uint16_t* const ReportSize)
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{
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Device_Report_t* ReportParams = (Device_Report_t*)ReportData;
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RTC_GetTimeDate(&ReportParams->TimeDate);
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ReportParams->LogInterval500MS = LoggingInterval500MS_SRAM;
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*ReportSize = sizeof(Device_Report_t);
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return true;
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}
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/** HID class driver callback function for the processing of HID reports from the host.
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*
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* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
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* \param[in] ReportID Report ID of the received report from the host
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* \param[in] ReportType The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
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* \param[in] ReportData Pointer to a buffer where the received report has been stored
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* \param[in] ReportSize Size in bytes of the received HID report
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*/
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void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
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const uint8_t ReportID,
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const uint8_t ReportType,
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const void* ReportData,
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const uint16_t ReportSize)
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{
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Device_Report_t* ReportParams = (Device_Report_t*)ReportData;
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RTC_SetTimeDate(&ReportParams->TimeDate);
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/* If the logging interval has changed from its current value, write it to EEPROM */
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if (LoggingInterval500MS_SRAM != ReportParams->LogInterval500MS)
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{
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LoggingInterval500MS_SRAM = ReportParams->LogInterval500MS;
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eeprom_update_byte(&LoggingInterval500MS_EEPROM, LoggingInterval500MS_SRAM);
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}
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}
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