ap-main.c

mmc_sd_memory_card_driver_sample_project_files.zip spi接口的sd card driver 示例

const char read_access_mode[] = {"r"};
const char write_access_mode[] = {"w"};
const char append_access_mode[] = {"a"};
const char read_write_access_mode[] = {"r+"};
const char write_read_access_mode[] = {"w+"};
const char append_read_access_mode[] = {"a+"};



const char text_file_line1_string[] = {"THIS IS A SAMPLE FILE\r\n"};  //('\r' = carriage return, '\n' = line feed)
const char text_file_line2_string[] = {"Created by the embedded-code.com MMC / SD FAT driver\r\n"};
const char spreadsheet_file_no_text_file_string[] = {"The text.txt file could not be read!"};

//**********************************
//**********************************
//********** PROCESS MODE **********
//**********************************
//**********************************
//This is a simple example user mode state machine function.
//The current mode is selected using the switch inputs.
//Each of the 6 modes does a specific function with the LCD screen
void process_mode (void)
{
	######## *##########;
	######## *##########;
	#### ######;
	#### ###############[##];
	### ######;


	//------------------------------
	//----- DO THE LED OUTPUTS -----
	//------------------------------
	//----- RED LED INDICATES THAT PCB IS POWERED -----
	## (#########################)
	{
		//LED IS BEING FORCED OFF
		######## = #;
	}
	####
	{
		//LED OPERATES AS NORMAL
		######## = #;
	}

	//----- GREEN LED INDICATES THAT A MMC / SD CARD IS INSERTED AND IS READY FOR USE -----
	## (#########################)
	{
		//LED IS BEING FORCED OFF
		######## = #;
	}
	####
	{
		//LED OPERATES AS NORMAL
		## (###########)
		{
			//Card is inserted and ready to use
			######## = #;
		}
		####
		{
			//Card is not inserted
			######## = #;
		}
	}





	//--------------------------------------
	//----- PROCESS ANY BUTTON PRESSES -----
	//--------------------------------------
	## (################## && ###########)
	{
		//------------------------------------
		//----- LEFT EDGE BUTTON PRESSED -----
		//------------------------------------
		//ALL FILES IN THE ROOT DIRECTORY ARE DELETED, AND A NEW FILE CALLED TEST.TXT IS CREATED
		//CONTAINING EXAMPLE TEST DATA. THE RED LED BLINKS TO CONFIRM THE OPERATION.


		//----- DELETE ALL FILES IN THE ROOT DIRECTORY -----
		##### (##########(############) == #)
			;

		//----- CREATE NEW FILE FOR WRITING -----
		########## = #########(#################, #################);
		## (########## != #)
		{
			//----- FILE WAS SUCESSFULLY CREATED -----

			//----- WRITE STRING DATA -----
			## (#########(######################, ##########) == #######)
				#### #################;					//Write error

			//----- WRITE A DATA BLOCK -----
			##########(######################, ######(####), (###)######(######################), ##########);

			//----- WRITE INDIVIDUAL BYTES OF DATA -----
			### (###### = '#'; ###### <= '#'; ######++)
			{
				## (#########((###)######, ##########) == #######)
					#### #################;				//Write error
			}

			//----- CLOSE THE FILE -----
			## (##########(##########))
				#### #################;					//Error - could not close


			//----- BLINK THE RED LED TO CONFIRM OPERATION -----
			######################### = ##;

		}
		####
		{
			//----- ERROR - THE FILE COULD NOT BE CREATED -----
			#### #################;
		}



	}

	## (################## && ###########)
	{
		//---------------------------------
		//----- MIDDLE BUTTON PRESSED -----
		//---------------------------------
		//A NEW SPREADSHEET FILE CALLED TEST.CSV IS CREATED CONTAINING TEST DATA FROM THE TEST.TXT FILE
		//IF IT IS PRESENT ON THE MMC / SD CARD.  THE GREEN LED BLINKS TO CONFIRM THE OPERATION.


		//----- CREATE NEW FILE FOR WRITING -----
		########## = #########(#################, #################);
		## (########## != #)
		{
			//----- FILE WAS SUCESSFULLY CREATED -----


			//----- OPEN THE TEST.TXT FILE FOR READING IF IT EXISTS -----
			########## = #########(#################, ################);
			## (########## != #)
			{
				//----- THE TEST.TXT FILE DOES EXIST -----
				//WRITE TO THE NEW SPREADSHEET FILE USING DATA FROM THE TEXT FILE

				//READ THE FIRST LINE FROM THE TEXT FILE
				## (#########(###############, ##, ##########) == #)
					#### #################;					//Error - end of line not detected

				//WRITE TO SPREADSHEET FILE
				## (##############(###############, ##########) == #######)
					#### #################;					//Write error

				//READ NEXT LINE AS A DATA BLOCK FROM THE TEXT FILE
				#########(###############, ######(####), (###)######(######################), ##########);

				//WRITE TO SPREADSHEET FILE
				##########(######################, ######(####), (###)######(######################), ##########);

				//WRITE SEVERAL COLUMNS  THE SPREADSHEET FILE
				#########((###)'\#', ##########);
				#########((###)'\#', ##########);

				### (###### = '#'; ###### <= '#'; ######++)
				{
					#########((###)######, ##########);
					#########((###)',', ##########);
				}

				//CHECK TO SEE IF ANY ERROR HAS OCCURED
				## (##########(##########))
					#### #################;


				//WRITE THE LAST CHARACTER OF THE TEXT FILE TO THE START OF THE NEXT ROW
				#########((###)'\#', ##########);
				#########((###)'\#', ##########);

				#########(##########, #, ############);
				###### = #########(##########);
				## (###### == #######)
					#### #################;					//Read error

				#########(######, ##########);

				#########((###)'\#', ##########);
				#########((###)'\#', ##########);


				//CLOSE THE TEST.TXT FILE
				## (##########(##########))
					#### #################;					//Error - could not close
			}
			####
			{
				//----- THE TEST.TXT FILE DOES NOT EXIST -----
				//WRITE TO THE NEW SPREADSHEET FILE WITHOUT DATA FROM THE TEXT FILE
				## (#########(####################################, ##########) == #######)
					#### #################;					//Write error
			}


			//----- CLOSE THE SPREADSHEET FILE -----
			## (##########(##########))
				#### #################;					//Error - could not close

			//----- BLINK THE GREEN LED TO CONFIRM OPERATION -----
			######################### = ##;

		}
		####
		{
			//----- ERROR - THE FILE COULD NOT BE CREATED -----
			#### #################;
		}



	}

	######;

file_access_error:
	//-----------------------------
	//----- FILE ACCESS ERROR -----
	//-----------------------------

	//Try and close the files if they are open
	##########(##########);
	##########(##########);

	#####(#)				//<<<< HALT HERE FOR DEBUG - HANDLE PROPERLY FOR A RELEASE APPLICATION <<<<
		;

}






//*************************************************************************************************************************************
//*************************************************************************************************************************************
//*************************************************************************************************************************************
//*************************************************************************************************************************************
//*************************************************************************************************************************************
//*************************************************************************************************************************************
//*************************************************************************************************************************************

//************************************************
//************************************************
//********** INTERRUPT VECTOR LOCATIONS **********
//************************************************
//************************************************

//***********************************
//***** HIGH PRIORITY INTERRUPT *****
//***********************************
####### #### ##########=####			//This is the vector address for a PIC18 high priority interrupt 
void athighvector (void)
{
	#### 	####	#############	#######
}
####### #### 		//(Return to normal)

//**********************************
//***** LOW PRIORITY INTERRUPT *****
//**********************************
####### #### #########=####			//This is the vector address for a PIC18 low priority interrupt 
void atlowvector (void)
{
	####	####	#############	#######
}
####### #### 		//(Return to normal)



//*************************************************************
//*************************************************************
//********** HIGH PRIORITY INTERRUPT SERVICE ROUTINE **********
//*************************************************************
//*************************************************************
//#pragma interrupt interruptisrh			//<<< This is the normal C18 compiler definition to indicate the interrupt high priority function.
####### ############ #############			//<<<For PIC18 devices with the silicon bug that means the RETFIE FAST instruction cannot be used use this C18
											//compiler definition so that the low priority context saving aproach is used (if not sure just use this)
void interruptisrh (void)
{
	###### #### ############## = #;
	###### #### ############# = #;

	//************************
	//***** USART TX IRQ *****
	//************************
	//if(PIE1bits.TXIE && PIR1bits.TXIF)
	//	usart_transmit_irq();

	//************************
	//***** USART RX IRQ *****
	//************************
	//if(PIE1bits.RCIE && PIR1bits.RCIF)
	//	usart_receive_irq();


	//***************************************
	//********** TIMER 0 HEARTBEAT **********
	//***************************************
	##(##########.###### && ##########.######)
	{
		##########.###### = #;					//Reset the timer 0 irq flag

		####
		//Reset timer for the next rollover (in assembler for accuracy)
		#####	#####,############				//read the current timer value (read low byte loads the high byte)
		#####	#####,#############
		#####	((####### # (((########################### / ###) / #) # ##)) & ######)		//<<< /100 for 10mS irq, /1000 for 1mS irq
		#####	############,#,#				//(1 = file register, 0 = access ram)
		#####	((####### # (((########################### / ###) / #) # ##)) >> #)			//<<< /100 for 10mS irq, /1000 for 1mS irq
		######	#############,#,#				//(1 = file register, 0 = access ram)
		#####	#############,#####				//Store new value (high byte first)
		#####	############,#####
		#######

		//The above code takes 12 instruction cycles
		//The timer is inhibited for 2 instruction cycles after the low byte is written
		//Therefore subtract 14 from the value to be written


		//------------------------------
		//------------------------------
		//----- HERE EVERY 10 mSec -----
		//------------------------------
		//------------------------------

		//----- GENERAL USE 10mS TIMER -----
		## (######################)
			########################;


		//----- READ SWITCHES FLAG -----
		################## = #;

		//----- USER MODE 10mS TIMER -----
		## (####################)
			######################;


		//----- FAT FILING SYSTEM DRIVER TIMER -----
		## (##############)
			################;

		//----- LED TIMERS -----
		## (#########################)
			###########################;
		## (#########################)
			###########################;


		##############++;
		## (############## == ##)
		{
			//-------------------------------
			//-------------------------------
			//----- HERE EVERY 100 mSec -----
			//-------------------------------
			//-------------------------------
			############## = #;

			//----- GENERAL USE 100mS TIMER -----
			## (#######################)
				#########################;







			#############++;
			## (############# == ##)
			{
				//----------------------------
				//----------------------------
				//----- HERE EVERY 1 Sec -----
				//----------------------------
				//----------------------------
				############# = #;


			}
		}
	}



	//<<<<< ADD OTHER HIGH PRIORITY INTERRUPTS HERE <<<<<
	
	
}	
	

//************************************************************
//************************************************************
//********** LOW PRIORITY INTERRUPT SERVICE ROUTINE **********
//************************************************************
//************************************************************
####### ############ #############			//<<< C18 compiler definition to indicate the interrupt low priority function.
void interruptisrl (void)
{


	//<<<<< ADD OTHER LOW PRIORITY INTERRUPTS HERE <<<<<
	
	
}
####### #### 		//(Return to normal)