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qmk_firmware/Projects/TemperatureDataLogger/TempDataLogger.c

188 lines
5.9 KiB

/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Main source file for the TemperatureDataLogger project. This file contains the main tasks of
* the project and is responsible for the initial application hardware configuration.
*/
#include "TempDataLogger.h"
/** LUFA Mass Storage Class driver interface configuration and state information. This structure is
* passed to all Mass Storage Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another.
*/
USB_ClassInfo_MS_Device_t Disk_MS_Interface =
{
.Config =
{
.InterfaceNumber = 0,
.DataINEndpointNumber = MASS_STORAGE_IN_EPNUM,
.DataINEndpointSize = MASS_STORAGE_IO_EPSIZE,
.DataINEndpointDoubleBank = false,
.DataOUTEndpointNumber = MASS_STORAGE_OUT_EPNUM,
.DataOUTEndpointSize = MASS_STORAGE_IO_EPSIZE,
.DataOUTEndpointDoubleBank = false,
.TotalLUNs = 1,
},
};
/** FAT Fs structure to hold the internal state of the FAT driver for the dataflash contents. */
FATFS DiskFATState;
/** FAT Fs structure to hold a FAT file handle for the log data write destination. */
FIL TempLogFile;
/** Counter to count the number of 10 millisecond tick that has elapsed since the last sample */
uint16_t CurrentLogTick;
ISR(TIMER1_COMPA_vect, ISR_BLOCK)
{
if (CurrentLogTick++ != LOG_INTERVAL_10MS)
return;
CurrentLogTick = 0;
if (USB_DeviceState == DEVICE_STATE_Unattached)
{
f_printf(&TempLogFile, "%d Degrees\r\n", Temperature_GetTemperature());
f_sync(&TempLogFile);
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
/* Mount and open the log file on the dataflash FAT partition */
f_mount(0, &DiskFATState);
f_open(&TempLogFile, LOG_FILENAME, FA_OPEN_ALWAYS | FA_WRITE);
f_lseek(&TempLogFile, TempLogFile.fsize);
/* Write out the log seperator line */
f_printf(&TempLogFile, "===========================\r\n");
Temperature_GetTemperature(); // Discard first temperature reading to ensure accuracy
for (;;)
{
MS_Device_USBTask(&Disk_MS_Interface);
USB_USBTask();
}
}
/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */
clock_prescale_set(clock_div_1);
/* Hardware Initialization */
LEDs_Init();
SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
Dataflash_Init();
USB_Init();
ADC_Init(ADC_REFERENCE_AVCC | ADC_FREE_RUNNING | ADC_PRESCALE_128);
Temperature_Init();
/* 10ms interval timer configuration */
OCR1A = (((F_CPU / 1024) / 100) - 1);
TCCR1A = (1 << WGM01); // CTC mode
TCCR1B = (1 << CS12) | (1 << CS10); // Fcpu/1024 speed
TIMSK1 = (1 << OCIE1A);
/* Clear Dataflash sector protections, if enabled */
DataflashManager_ResetDataflashProtections();
}
/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
/* Close the log file so that the host has exclusive filesystem access */
f_close(&TempLogFile);
}
/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
/* When disconnected from the host, re-open log file so we can resume logging */
f_mount(0, &DiskFATState);
f_open(&TempLogFile, LOG_FILENAME, FA_OPEN_ALWAYS | FA_WRITE);
f_lseek(&TempLogFile, TempLogFile.fsize);
}
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_READY);
if (!(MS_Device_ConfigureEndpoints(&Disk_MS_Interface)))
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}
/** Event handler for the library USB Unhandled Control Request event. */
void EVENT_USB_Device_UnhandledControlRequest(void)
{
MS_Device_ProcessControlRequest(&Disk_MS_Interface);
}
/** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
*
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface configuration structure being referenced
*/
bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{
bool CommandSuccess;
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
LEDs_SetAllLEDs(LEDMASK_USB_READY);
return CommandSuccess;
}