你是用 APP020 的版子嗎？如果是的話請注意底下的設定：

APP020 EVM Board setting request
DSW1 – SW1 & SW2 are ON position for the ICD2 programming & using the PGC, PGD for Debugging
DSW2 – SW1 & SW2 are ON position for UART1 (Lab1)
SW3 & SW4 are ON position for UART2 (Lab2)
DSW3 – SW1 & SW2 are ON position for VR input
DSW4 – All OFF position
　
可以參考 dsPIC30F Peripheral Module - USART　的說明與練習。下載中心有資料的。

有沒有中斷自己可以用 ICD2 設斷點作判斷用，不要只拿 ICD2　做燒錄工具，這樣太不物盡其用了。浪費的很。

動作 :將 UART1 (RS232) 規劃成接收中斷,所以當使用者每次按電腦鍵盤時,進行類比訊號轉換，並將轉換結果輸出至UART

鮑率9600

問題:與超級終端機連線時只會出現"Exercise 12 - UART" 而按任何按鈕沒反應,請問問題是.............

///////////////////////////////////////////////////
#define __dsPIC30F4011__

#include <p30F4011.h>
#include <uart.h> // 將UART函式的原型宣告檔案含入
#include <timer.h> // 將Timer函式的原型宣告檔案含入
#include <adc10.h> // 將adc10函式的原型宣告檔案含入

#define FCY 7372800 * 2 // 因為使用頻率為將外部 7.3728 MHz * 8 的模式 , 每一指令週期需 4 個 clock
// 所以 FCY = (7.3728 * 8 / 4 ) MHz = 7372800* 2

_FOSC(CSW_FSCM_OFF & XT_PLL8); // XT with 8xPLL oscillator, Failsafe clock off
_FWDT(WDT_OFF); // Watchdog timer disabled
_FBORPOR(PBOR_OFF & MCLR_EN); // Brown-out reset disabled, MCLR reset enabled
_FGS(CODE_PROT_OFF); // Code protect disabled

const char My_String1[]="\r\nExercise 12 - UART\r\n" ; // 宣告字串於 Program Memory (因為 const 宣告)

void Init_ADC(void) ;
void Init_UART(void) ;
void Show_ADC(void) ;
void sitoa(unsigned char, unsigned char *TXdata ) ;

void _ISR _U1RXInterrupt(void) // UART1接收資料中斷副程式
{

unsigned char dummy;

dummy = ReadUART1() ; // 將UART讀取資料暫存器的內容讀出

Show_ADC();

IFS0bits.U1RXIF = 0 ;

}

int main( void )
{

Init_ADC( ) ; // 將ADC進行初始化設定

Init_UART( ) ; // 對 UART 模組作初始化設定

putsUART1( (unsigned int *) My_String1 ) ; // 將存在 Program Memory 的字串輸出

while(1) ;

CloseUART1();
}

/***********************************************/
// Subroutine to configure the A/D module

void Init_ADC(void)
{

unsigned int Channel, PinConfig, Scanselect, Adcon3_reg, Adcon2_reg, Adcon1_reg;

ADCON1bits.ADON = 0; /* turn off ADC */

PinConfig = ENABLE_AN0_ANA; // Select port pins as analog inputs ADPCFG<15:0>

Adcon1_reg = ADC_MODULE_ON & // Turn on A/D module (ADON)
ADC_IDLE_STOP & // ADC turned off during idle (ADSIDL)
ADC_FORMAT_INTG & // Output in integer format (FORM)
ADC_CLK_MANUAL & // Conversion trigger manually (SSRC)
ADC_SAMPLE_INDIVIDUAL & // Sample channels individually (SIMSAM)
ADC_AUTO_SAMPLING_OFF; // Sample trigger manually (ASAM)

Adcon2_reg = ADC_VREF_AVDD_AVSS & // Voltage reference : +AVdd, -AVss (VCFG)
ADC_SCAN_OFF & // Scan off (CSCNA)
ADC_ALT_BUF_OFF & // Use fixed buffer (BUFM)
ADC_ALT_INPUT_OFF & // Does not alternate between MUX A & MUX B (ALTS)
ADC_CONVERT_CH0 & // Convert only channel 0 (CHPS)
ADC_SAMPLES_PER_INT_1; // 1 sample between interrupt (SMPI)

Adcon3_reg = ADC_SAMPLE_TIME_10 & // Auto-Sample time (SAMC)
ADC_CONV_CLK_SYSTEM & // Use system clock (ADRC)
ADC_CONV_CLK_4Tcy; // Conversion clock = 4 Tcy (ADCS)
// ADCS = 2*(154ns)/(1/Fcy)-1 = 3.5416

Scanselect = SCAN_NONE; // ADC scan no channel (ADCSSL)

OpenADC10(Adcon1_reg, Adcon2_reg, Adcon3_reg, PinConfig, Scanselect);

Channel = ADC_CH0_POS_SAMPLEA_AN0 & // CH0 Pos. : AN0, Neg. : Nominal Vref- Defined in ADCON2
ADC_CH0_NEG_SAMPLEA_NVREF ; // (ADCHS)
SetChanADC10(Channel);

ConfigIntADC10(ADC_INT_DISABLE); // Disable ADC interrupt

}

/***********************************************/
// Subroutine to initialize UART module

void Init_UART(void)
{
/* Holds the value of baud register */
unsigned int baudvalue;
/* Holds the value of uart config reg */
unsigned int U1MODEvalue;
/* Holds the information regarding uart
TX & RX interrupt modes */
unsigned int U1STAvalue;
/* Turn off UART1module */
CloseUART1();
/* Configure uart1 receive and transmit interrupt */
ConfigIntUART1(UART_RX_INT_EN & UART_RX_INT_PR6 &
UART_TX_INT_DIS & UART_TX_INT_PR2);
/* Setup the Buad Rate Generator */
baudvalue = 95; //UxBRG = ( (FCY/Desired Baud Rate)/16) – 1
//UxBRG = ( (7372800*2/9600)/16-1) = 95
/* Configure UART1 module to transmit 8 bit data with one stopbit.
Also Enable loopback mode */
U1MODEvalue = UART_EN & UART_IDLE_CON &
UART_DIS_WAKE & UART_DIS_LOOPBACK &
UART_DIS_ABAUD & UART_NO_PAR_8BIT &
UART_1STOPBIT;
U1STAvalue = UART_INT_TX_BUF_EMPTY &
UART_TX_PIN_NORMAL &
UART_TX_ENABLE & UART_INT_RX_CHAR &
UART_ADR_DETECT_DIS &
UART_RX_OVERRUN_CLEAR;
OpenUART1(U1MODEvalue, U1STAvalue, baudvalue);

return;

}

/***********************************************/
// Subroutine to show Time on UART

void Show_ADC(void)
{

unsigned char dummy ;
unsigned int ADCValue;
unsigned char TXdata[4];
ADCON1bits.SAMP = 1; // start sampling ...

for ( dummy = 0 ; dummy < 200 ; dummy ++ );

ConvertADC10();
while (BusyADC10()); // conversion done?
ADCValue = (ADCBUF0 >> 2); // get ADC value

sitoa(ADCValue, (unsigned char *)TXdata);

putsUART1( (unsigned int *) "VR2 : ");
putsUART1( (unsigned int *) TXdata ) ;
putsUART1( (unsigned int *) "\r\n" );

}

//***********************************************
// Put a unsigned byte in decimal format
// to UART Module

void sitoa( unsigned char The_Number, unsigned char *buff)
{

unsigned char Temp_Char_100, Temp_Char_10, Temp_Char ;
unsigned char *temp = (unsigned char *)buff ;

Temp_Char_100 = The_Number /100 ; //取百位數的數字
temp[0] = Temp_Char_100 + '0' ; //取百位數的數字
Temp_Char_10 = (The_Number - Temp_Char_100*100) /10 ; //取十位數的數字
temp[1] = Temp_Char_10 + '0' ; //取十位數的數字
Temp_Char = The_Number - ( Temp_Char_100*100 + Temp_Char_10 * 10 ) ; //取個位數的數字
temp[2] = Temp_Char + '0' ; //取個位數的數字
temp[3] = 0 ;
}