main.c

利用psoc进行usb及capsense的程序编写

//----------------------------------------------------------------------------
// C main line for Example 3
//
// Copyright 2005, John Hyde,  USB DEsign By Example
// You may use this program for development but you may not sell or publish it
// without the written permission of the author

// Send questions to john@USB_By_Example.com
//----------------------------------------------------------------------------

#include <m8c.h>        // part specific constants and macros
#include "PSoCAPI.h"    // PSoC API definitions for all User Modules
#include "hardware.h"
#include "adcinc.h"
#include "pga.h"
#include "lcd.h"
#include "usb.h"

extern BYTE SOF_Flag;
BYTE Value, Even, Buttons, Count;
BYTE SampleCount, SkipCount;
BYTE H, T, U;
BYTE Voltage, OutReport;

void init_display(void) {
	BYTE i;
	LCD_Position(0,0);
	LCD_PrCString("Temperature =");
	LCD_Position(1,0);
	LCD_PrCString("Waiting . . . .");
	}	

void ConvertToDecimal(BYTE Value) {
	H = Value/100;
	T = (Value - (H*100))/10;
	U = (Value - (H*100) - (T*10));
	}

void DisplayTemperature(void) {
	ConvertToDecimal(Voltage);
	LCD_Position(0, 13);
	LCD_WriteData(H + '0');
	LCD_WriteData(T + '0');
	LCD_WriteData(U + '0');
	}

void DisplaySampleCount(void) {
	ConvertToDecimal(SampleCount);
	LCD_Position(1, 0);
	LCD_PrCString("Sample = ");
	LCD_WriteData(H + '0');
	LCD_WriteData(T + '0');
	LCD_WriteData(U + '0');
	}
	 
void main() {
	init_hardware();
	M8C_EnableGInt;

// Can now start my ADC
// Note that I had to include a PGA to connect the analog mux to ADC
	PGA_Start(3);
	ADCINC_Start(3);
	ADCINC_GetSamples(1);
	LCD_Start();
	init_display();
// Connect to the host
	USB_Start(0,USB_5V_OPERATION);

// Wait to be enumerated
	while (!USB_bGetConfiguration());
	USB_INT_REG |= USB_INT_SOF_MASK;
	ADCINC_GetSamples(1);
// Post a buffer to wait for a command
	USB_EnableOutEP(4);
	
	while(1) {
		if (SOF_Flag) {
			SOF_Flag = 0;
			if (ADCINC_fIsDataAvailable()) {
				Voltage = ADCINC_bClearFlagGetData();
				DisplayTemperature();
				ADCINC_GetSamples(1);
				}
// Am I supplying data
			if (OutReport) {
// Have I finished supplying data
				if (--SkipCount == 0) {
					SkipCount = OutReport;
					if (SampleCount--) {
// Send another sample
						DisplaySampleCount();
						USB_LoadInEP(3, &Voltage, 1, USB_TOGGLE);
						}
					else {
// Finished with these samples, restart
						OutReport = 0;
						init_display();
						}
					}
				}
// Did I receive a command?
			if (USB_bGetEPAckState(4)) {
				Count = USB_bReadOutEP(4, &OutReport, 1);
// Setup to supply the samples
				SampleCount = 255;
				SkipCount = OutReport;
// Wait for another command
				USB_EnableOutEP(4);
				}
			}
		}
	}