3 Copyright (C) Dean Camera, 2017.
5 dean [at] fourwalledcubicle [dot] com
10 Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
12 Permission to use, copy, modify, distribute, and sell this
13 software and its documentation for any purpose is hereby granted
14 without fee, provided that the above copyright notice appear in
15 all copies and that both that the copyright notice and this
16 permission notice and warranty disclaimer appear in supporting
17 documentation, and that the name of the author not be used in
18 advertising or publicity pertaining to distribution of the
19 software without specific, written prior permission.
21 The author disclaims all warranties with regard to this
22 software, including all implied warranties of merchantability
23 and fitness. In no event shall the author be liable for any
24 special, indirect or consequential damages or any damages
25 whatsoever resulting from loss of use, data or profits, whether
26 in an action of contract, negligence or other tortious action,
27 arising out of or in connection with the use or performance of
33 * Main source file for the TemperatureDataLogger project. This file contains the main tasks of
34 * the project and is responsible for the initial application hardware configuration.
37 #include "TempDataLogger.h"
39 /** LUFA Mass Storage Class driver interface configuration and state information. This structure is
40 * passed to all Mass Storage Class driver functions, so that multiple instances of the same class
41 * within a device can be differentiated from one another.
43 USB_ClassInfo_MS_Device_t Disk_MS_Interface =
47 .InterfaceNumber = INTERFACE_ID_MassStorage,
50 .Address = MASS_STORAGE_IN_EPADDR,
51 .Size = MASS_STORAGE_IO_EPSIZE,
56 .Address = MASS_STORAGE_OUT_EPADDR,
57 .Size = MASS_STORAGE_IO_EPSIZE,
64 /** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
65 static uint8_t PrevHIDReportBuffer[GENERIC_REPORT_SIZE];
67 /** LUFA HID Class driver interface configuration and state information. This structure is
68 * passed to all HID Class driver functions, so that multiple instances of the same class
69 * within a device can be differentiated from one another.
71 USB_ClassInfo_HID_Device_t Generic_HID_Interface =
75 .InterfaceNumber = INTERFACE_ID_HID,
78 .Address = GENERIC_IN_EPADDR,
79 .Size = GENERIC_EPSIZE,
82 .PrevReportINBuffer = PrevHIDReportBuffer,
83 .PrevReportINBufferSize = sizeof(PrevHIDReportBuffer),
87 /** Non-volatile Logging Interval value in EEPROM, stored as a number of 500ms ticks */
88 static uint8_t EEMEM LoggingInterval500MS_EEPROM = DEFAULT_LOG_INTERVAL;
90 /** SRAM Logging Interval value fetched from EEPROM, stored as a number of 500ms ticks */
91 static uint8_t LoggingInterval500MS_SRAM;
93 /** Total number of 500ms logging ticks elapsed since the last log value was recorded */
94 static uint16_t CurrentLoggingTicks;
96 /** FAT Fs structure to hold the internal state of the FAT driver for the Dataflash contents. */
97 static FATFS DiskFATState;
99 /** FAT Fs structure to hold a FAT file handle for the log data write destination. */
100 static FIL TempLogFile;
103 /** ISR to handle the 500ms ticks for sampling and data logging */
104 ISR(TIMER1_COMPA_vect, ISR_BLOCK)
106 /* Signal a 500ms tick has elapsed to the RTC */
109 /* Check to see if the logging interval has expired */
110 if (++CurrentLoggingTicks < LoggingInterval500MS_SRAM)
113 /* Reset log tick counter to prepare for next logging interval */
114 CurrentLoggingTicks = 0;
116 uint8_t LEDMask = LEDs_GetLEDs();
117 LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
119 /* Only log when not connected to a USB host */
120 if (USB_DeviceState == DEVICE_STATE_Unattached)
122 TimeDate_t CurrentTimeDate;
123 RTC_GetTimeDate(&CurrentTimeDate);
125 char LineBuffer[100];
126 uint16_t BytesWritten;
128 BytesWritten = sprintf(LineBuffer, "%02d/%02d/20%02d, %02d:%02d:%02d, %d Degrees\r\n",
129 CurrentTimeDate.Day, CurrentTimeDate.Month, CurrentTimeDate.Year,
130 CurrentTimeDate.Hour, CurrentTimeDate.Minute, CurrentTimeDate.Second,
131 Temperature_GetTemperature());
133 f_write(&TempLogFile, LineBuffer, BytesWritten, &BytesWritten);
134 f_sync(&TempLogFile);
137 LEDs_SetAllLEDs(LEDMask);
140 /** Main program entry point. This routine contains the overall program flow, including initial
141 * setup of all components and the main program loop.
147 /* Fetch logging interval from EEPROM */
148 LoggingInterval500MS_SRAM = eeprom_read_byte(&LoggingInterval500MS_EEPROM);
150 /* Check if the logging interval is invalid (0xFF) indicating that the EEPROM is blank */
151 if (LoggingInterval500MS_SRAM == 0xFF)
152 LoggingInterval500MS_SRAM = DEFAULT_LOG_INTERVAL;
154 /* Mount and open the log file on the Dataflash FAT partition */
157 LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
158 GlobalInterruptEnable();
162 MS_Device_USBTask(&Disk_MS_Interface);
163 HID_Device_USBTask(&Generic_HID_Interface);
168 /** Opens the log file on the Dataflash's FAT formatted partition according to the current date */
169 void OpenLogFile(void)
171 char LogFileName[12];
173 /* Get the current date for the filename as "DDMMYY.csv" */
174 TimeDate_t CurrentTimeDate;
175 RTC_GetTimeDate(&CurrentTimeDate);
176 sprintf(LogFileName, "%02d%02d%02d.csv", CurrentTimeDate.Day, CurrentTimeDate.Month, CurrentTimeDate.Year);
178 /* Mount the storage device, open the file */
179 f_mount(0, &DiskFATState);
180 f_open(&TempLogFile, LogFileName, FA_OPEN_ALWAYS | FA_WRITE);
181 f_lseek(&TempLogFile, TempLogFile.fsize);
184 /** Closes the open data log file on the Dataflash's FAT formatted partition */
185 void CloseLogFile(void)
187 /* Sync any data waiting to be written, unmount the storage device */
188 f_sync(&TempLogFile);
189 f_close(&TempLogFile);
192 /** Configures the board hardware and chip peripherals for the demo's functionality. */
193 void SetupHardware(void)
195 #if (ARCH == ARCH_AVR8)
196 /* Disable watchdog if enabled by bootloader/fuses */
197 MCUSR &= ~(1 << WDRF);
200 /* Disable clock division */
201 clock_prescale_set(clock_div_1);
204 /* Hardware Initialization */
206 ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_128);
210 TWI_Init(TWI_BIT_PRESCALE_4, TWI_BITLENGTH_FROM_FREQ(4, 50000));
213 /* 500ms logging interval timer configuration */
214 OCR1A = (((F_CPU / 256) / 2) - 1);
215 TCCR1B = (1 << WGM12) | (1 << CS12);
216 TIMSK1 = (1 << OCIE1A);
218 /* Check if the Dataflash is working, abort if not */
219 if (!(DataflashManager_CheckDataflashOperation()))
221 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
225 /* Clear Dataflash sector protections, if enabled */
226 DataflashManager_ResetDataflashProtections();
229 /** Event handler for the library USB Connection event. */
230 void EVENT_USB_Device_Connect(void)
232 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
234 /* Close the log file so that the host has exclusive file system access */
238 /** Event handler for the library USB Disconnection event. */
239 void EVENT_USB_Device_Disconnect(void)
241 LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
243 /* Mount and open the log file on the Dataflash FAT partition */
247 /** Event handler for the library USB Configuration Changed event. */
248 void EVENT_USB_Device_ConfigurationChanged(void)
250 bool ConfigSuccess = true;
252 ConfigSuccess &= HID_Device_ConfigureEndpoints(&Generic_HID_Interface);
253 ConfigSuccess &= MS_Device_ConfigureEndpoints(&Disk_MS_Interface);
255 LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
258 /** Event handler for the library USB Control Request reception event. */
259 void EVENT_USB_Device_ControlRequest(void)
261 MS_Device_ProcessControlRequest(&Disk_MS_Interface);
262 HID_Device_ProcessControlRequest(&Generic_HID_Interface);
265 /** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
267 * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface configuration structure being referenced
269 bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
273 LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
274 CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
275 LEDs_SetAllLEDs(LEDMASK_USB_READY);
277 return CommandSuccess;
280 /** HID class driver callback function for the creation of HID reports to the host.
282 * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
283 * \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
284 * \param[in] ReportType Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
285 * \param[out] ReportData Pointer to a buffer where the created report should be stored
286 * \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent)
288 * \return Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent
290 bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
291 uint8_t* const ReportID,
292 const uint8_t ReportType,
294 uint16_t* const ReportSize)
296 Device_Report_t* ReportParams = (Device_Report_t*)ReportData;
298 RTC_GetTimeDate(&ReportParams->TimeDate);
300 ReportParams->LogInterval500MS = LoggingInterval500MS_SRAM;
302 *ReportSize = sizeof(Device_Report_t);
306 /** HID class driver callback function for the processing of HID reports from the host.
308 * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
309 * \param[in] ReportID Report ID of the received report from the host
310 * \param[in] ReportType The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
311 * \param[in] ReportData Pointer to a buffer where the received report has been stored
312 * \param[in] ReportSize Size in bytes of the received HID report
314 void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
315 const uint8_t ReportID,
316 const uint8_t ReportType,
317 const void* ReportData,
318 const uint16_t ReportSize)
320 Device_Report_t* ReportParams = (Device_Report_t*)ReportData;
322 RTC_SetTimeDate(&ReportParams->TimeDate);
324 /* If the logging interval has changed from its current value, write it to EEPROM */
325 if (LoggingInterval500MS_SRAM != ReportParams->LogInterval500MS)
327 LoggingInterval500MS_SRAM = ReportParams->LogInterval500MS;
328 eeprom_update_byte(&LoggingInterval500MS_EEPROM, LoggingInterval500MS_SRAM);