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Hello everyone! I am trying to connect and run this program below with an EEPROM 24LC1025 via I2C but it is locking and does not exit the loop as described:
// Copy data to I2CBufferArray
unsigned char temp;
for(i ; i < bufferPtr ; i++)
{
temp = Data[i]; // Required or else IAR throws a
// warning [Pa082]
I2CBufferArray[counterI2cBuffer] = temp;
counterI2cBuffer--;
}#define I2C_PORT_SEL P3SEL #define I2C_PORT_OUT P3OUT #define I2C_PORT_REN P3REN #define I2C_PORT_DIR P3DIR #define SDA_PIN BIT0 // UCB0SDA pin P3.0 #define SCL_PIN BIT1 // UCB0SCL pin P3.1 #define SCL_CLOCK_DIV 0x0A // SCL clock devider void InitI2C(unsigned char eeprom_i2c_address); void EEPROM_ByteWrite(unsigned int Address , unsigned char Data); void EEPROM_PageWrite(unsigned int StartAddress , unsigned char * Data , unsigned int Size); unsigned char EEPROM_RandomRead(unsigned int Address); unsigned char EEPROM_CurrentAddressRead(void); void EEPROM_SequentialRead(unsigned int Address , unsigned char * Data , unsigned int Size); void EEPROM_AckPolling(void);
#include <MSP430F5529.h>
#include "I2Croutines.h"
#define MAXPAGEWRITE 64
int PtrTransmit;
unsigned char I2CBufferArray[66];
unsigned char I2CBuffer;
/*----------------------------------------------------------------------------*/
// Description:
// Initialization of the I2C Module
/*----------------------------------------------------------------------------*/
void InitI2C(unsigned char eeprom_i2c_address)
{
I2C_PORT_DIR |= SDA_PIN + SCL_PIN;
I2C_PORT_SEL |= SDA_PIN + SCL_PIN; // Assign I2C pins to USCI_B0
I2C_PORT_OUT |= SDA_PIN + SCL_PIN; // Assign I2C pins to USCI_B0
// Recommended initialisation steps of I2C module as shown in User Guide:
UCB0CTL1 |= UCSWRST; // Enable SW reset
UCB0CTL0 = UCMST + UCMODE_3 + UCSYNC; // I2C Master, synchronous mode
UCB0CTL1 = UCSSEL_2 + UCTR + UCSWRST; // Use SMCLK, TX mode, keep SW reset
UCB0BR0 = SCL_CLOCK_DIV; // fSCL = SMCLK/11 = 95.3kHz
UCB0BR1 = 0;
UCB0I2CSA = eeprom_i2c_address; // define Slave Address
// In this case the Slave Address
// defines the control byte that is
// sent to the EEPROM.
//UCB0I2COA = 0x01A5; // own address.
UCB0IE |= UCTXIE + UCRXIE + UCNACKIE;
UCB0CTL1 &= ~UCSWRST; // Clear SW reset, resume operation
if (UCB0STAT & UCBBUSY) // test if bus to be free
{ // otherwise a manual Clock on is
// generated
I2C_PORT_SEL &= ~SCL_PIN; // Select Port function for SCL
I2C_PORT_OUT &= ~SCL_PIN; //
I2C_PORT_DIR |= SCL_PIN; // drive SCL low
I2C_PORT_SEL |= SDA_PIN + SCL_PIN; // select module function for the
// used I2C pins
};
__enable_interrupt();
}
/*---------------------------------------------------------------------------*/
// Description:
// Initialization of the I2C Module for Write operation.
/*---------------------------------------------------------------------------*/
void I2CWriteInit(void)
{
UCB0CTL1 |= UCTR; // UCTR=1 => Transmit Mode (R/W bit = 0)
UCB0IFG &= ~UCTXIFG;
UCB0IE &= ~UCRXIE; // disable Receive ready interrupt
UCB0IE |= UCTXIE; // enable Transmit ready interrupt
}
/*----------------------------------------------------------------------------*/
// Description:
// Initialization of the I2C Module for Read operation.
/*----------------------------------------------------------------------------*/
void I2CReadInit(void)
{
UCB0CTL1 &= ~UCTR; // UCTR=0 => Receive Mode (R/W bit = 1)
UCB0IFG &= ~UCRXIFG;
UCB0IE &= ~UCTXIE; // disable Transmit ready interrupt
UCB0IE |= UCRXIE; // enable Receive ready interrupt
}
/*----------------------------------------------------------------------------*/
// Description:
// Byte Write Operation. The communication via the I2C bus with an EEPROM
// (2465) is realized. A data byte is written into a user defined address.
/*----------------------------------------------------------------------------*/
void EEPROM_ByteWrite(unsigned int Address, unsigned char Data)
{
unsigned char adr_hi;
unsigned char adr_lo;
while (UCB0STAT & UCBUSY); // wait until I2C module has
// finished all operations.
adr_hi = Address >> 8; // calculate high byte
adr_lo = Address & 0xFF; // and low byte of address
I2CBufferArray[2] = adr_hi; // Low byte address.
I2CBufferArray[1] = adr_lo; // High byte address.
I2CBufferArray[0] = Data;
PtrTransmit = 2; // set I2CBufferArray Pointer
I2CWriteInit();
UCB0CTL1 |= UCTXSTT; // start condition generation
// => I2C communication is started
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
UCB0CTL1 |= UCTXSTP; // I2C stop condition
while(UCB0CTL1 & UCTXSTP); // Ensure stop condition got sent
}
/*----------------------------------------------------------------------------*/
// Description:
// Page Write Operation. The communication via the I2C bus with an EEPROM
// (24xx65) is realized. A data byte is written into a user defined address.
/*----------------------------------------------------------------------------*/
void EEPROM_PageWrite(unsigned int StartAddress, unsigned char * Data, unsigned int Size)
{
volatile unsigned int i = 0;
volatile unsigned char counterI2cBuffer;
unsigned char adr_hi;
unsigned char adr_lo;
unsigned int currentAddress = StartAddress;
unsigned int currentSize = Size;
unsigned int bufferPtr = 0;
unsigned char moreDataToRead = 1;
while (UCB0STAT & UCBUSY); // wait until I2C module has
// finished all operations.
// Execute until no more data in Data buffer
while(moreDataToRead)
{
adr_hi = currentAddress >> 8; // calculate high byte
adr_lo = currentAddress & 0xFF; // and low byte of address
// Chop data down to 64-byte packets to be transmitted at a time
// Maintain pointer of current startaddress
if(currentSize > MAXPAGEWRITE)
{
bufferPtr = bufferPtr + MAXPAGEWRITE;
counterI2cBuffer = MAXPAGEWRITE - 1;
PtrTransmit = MAXPAGEWRITE + 1; // set I2CBufferArray Pointer
currentSize = currentSize - MAXPAGEWRITE;
currentAddress = currentAddress + MAXPAGEWRITE;
// Get start address
I2CBufferArray[MAXPAGEWRITE + 1] = adr_hi; // High byte address.
I2CBufferArray[MAXPAGEWRITE] = adr_lo; // Low byte address.
}
else
{
bufferPtr = bufferPtr + currentSize;
counterI2cBuffer = currentSize - 1;
PtrTransmit = currentSize + 1; // set I2CBufferArray Pointer.
moreDataToRead = 0;
currentAddress = currentAddress + currentSize;
// Get start address
I2CBufferArray[currentSize + 1] = adr_hi; // High byte address.
I2CBufferArray[currentSize] = adr_lo; // Low byte address.
}
// Copy data to I2CBufferArray
unsigned char temp;
for(i ; i < bufferPtr ; i++)
{
temp = Data[i]; // Required or else IAR throws a
// warning [Pa082]
I2CBufferArray[counterI2cBuffer] = temp;
counterI2cBuffer--;
}
I2CWriteInit();
UCB0CTL1 |= UCTXSTT; // start condition generation
// => I2C communication is started
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
UCB0CTL1 |= UCTXSTP; // I2C stop condition
while(UCB0CTL1 & UCTXSTP); // Ensure stop condition got sent
EEPROM_AckPolling(); // Ensure data is written in EEPROM
}
}
/*----------------------------------------------------------------------------*/
// Description:
// Current Address Read Operation. Data is read from the EEPROM. The current
// address from the EEPROM is used.
/*----------------------------------------------------------------------------*/
unsigned char EEPROM_CurrentAddressRead(void)
{
while(UCB0STAT & UCBUSY); // wait until I2C module has
// finished all operations
I2CReadInit();
UCB0CTL1 |= UCTXSTT; // I2C start condition
while(UCB0CTL1 & UCTXSTT); // Start condition sent?
UCB0CTL1 |= UCTXSTP; // I2C stop condition
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
while(UCB0CTL1 & UCTXSTP); // Ensure stop condition got sent
return I2CBuffer;
}
/*----------------------------------------------------------------------------*/
// Description:
// Random Read Operation. Data is read from the EEPROM. The EEPROM
// address is defined with the parameter Address.
/*----------------------------------------------------------------------------*/
unsigned char EEPROM_RandomRead(unsigned int Address)
{
unsigned char adr_hi;
unsigned char adr_lo;
while (UCB0STAT & UCBUSY); // wait until I2C module has
// finished all operations
adr_hi = Address >> 8; // calculate high byte
adr_lo = Address & 0xFF; // and low byte of address
I2CBufferArray[1] = adr_hi; // store single bytes that have to
I2CBufferArray[0] = adr_lo; // be sent in the I2CBuffer.
PtrTransmit = 1; // set I2CBufferArray Pointer
// Write Address first
I2CWriteInit();
UCB0CTL1 |= UCTXSTT; // start condition generation
// => I2C communication is started
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
// Read Data byte
I2CReadInit();
UCB0CTL1 |= UCTXSTT; // I2C start condition
while(UCB0CTL1 & UCTXSTT); // Start condition sent?
UCB0CTL1 |= UCTXSTP; // I2C stop condition
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
while(UCB0CTL1 & UCTXSTP); // Ensure stop condition got sent
return I2CBuffer;
}
/*----------------------------------------------------------------------------*/
// Description:
// Sequential Read Operation. Data is read from the EEPROM in a sequential
// form from the parameter address as a starting point. Specify the size to
// be read and populate to a Data buffer.
/*----------------------------------------------------------------------------*/
void EEPROM_SequentialRead(unsigned int Address , unsigned char * Data , unsigned int Size)
{
unsigned char adr_hi;
unsigned char adr_lo;
unsigned int counterSize;
while (UCB0STAT & UCBUSY); // wait until I2C module has
// finished all operations
adr_hi = Address >> 8; // calculate high byte
adr_lo = Address & 0xFF; // and low byte of address
I2CBufferArray[1] = adr_hi; // store single bytes that have to
I2CBufferArray[0] = adr_lo; // be sent in the I2CBuffer.
PtrTransmit = 1; // set I2CBufferArray Pointer
// Write Address first
I2CWriteInit();
UCB0CTL1 |= UCTXSTT; // start condition generation
// => I2C communication is started
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
// Read Data byte
I2CReadInit();
UCB0CTL1 |= UCTXSTT; // I2C start condition
while(UCB0CTL1 & UCTXSTT); // Start condition sent?
for(counterSize = 0 ; counterSize < Size ; counterSize++)
{
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
Data[counterSize] = I2CBuffer;
}
UCB0CTL1 |= UCTXSTP; // I2C stop condition
__bis_SR_register(LPM3_bits + GIE); // Enter LPM0 w/ interrupts
while(UCB0CTL1 & UCTXSTP); // Ensure stop condition got sent
}
/*----------------------------------------------------------------------------*/
// Description:
// Acknowledge Polling. The EEPROM will not acknowledge if a write cycle is
// in progress. It can be used to determine when a write cycle is completed.
/*----------------------------------------------------------------------------*/
void EEPROM_AckPolling(void)
{
while (UCB0STAT & UCBUSY); // wait until I2C module has
// finished all operations
do
{
UCB0STAT = 0x00; // clear I2C interrupt flags
UCB0CTL1 |= UCTR; // I2CTRX=1 => Transmit Mode (R/W bit = 0)
UCB0CTL1 &= ~UCTXSTT;
UCB0CTL1 |= UCTXSTT; // start condition is generated
while(UCB0CTL1 & UCTXSTT) // wait till I2CSTT bit was cleared
{
if(!(UCNACKIFG & UCB0STAT)) // Break out if ACK received
break;
}
UCB0CTL1 |= UCTXSTP; // stop condition is generated after
// slave address was sent => I2C communication is started
while (UCB0CTL1 & UCTXSTP); // wait till stop bit is reset
__delay_cycles(500); // Software delay
}while(UCNACKIFG & UCB0STAT);
}
/*---------------------------------------------------------------------------*/
/* Interrupt Service Routines */
/* Note that the Compiler version is checked in the following code and */
/* depending of the Compiler Version the correct Interrupt Service */
/* Routine definition is used. */
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCI_B0_VECTOR
__interrupt void USCI_B0_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USCI_B0_VECTOR))) USCI_B0_ISR (void)
#else
#error Compiler not supported!
#endif
{
if(UCTXIFG & UCB0IFG)
{
UCB0TXBUF = I2CBufferArray[PtrTransmit];// Load TX buffer
PtrTransmit--; // Decrement TX byte counter
if(PtrTransmit < 0)
{
while (!(UCB0IFG & UCTXIFG)); // USCI_B0 TX buffer ready?
UCB0IE &= ~UCTXIE; // disable interrupts.
UCB0IFG &= ~UCTXIFG; // Clear USCI_B0 TX int flag
__bic_SR_register_on_exit(LPM3_bits); // Exit LPM0
}
}
else if(UCRXIFG & UCB0IFG)
{
I2CBuffer = UCB0RXBUF; // store received data in buffer
__bic_SR_register_on_exit(LPM3_bits); // Exit LPM0
}
}#include <MSP430F5529.h>
#include "I2Croutines.h"
#include <stdio.h>
#include <intrinsics.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <math.h>
//****************************************************************************//
// Endereço (s) da(s) Memória (s) do Data Logger //
//****************************************************************************//
#define Banco1 0x50 // Endereço 0x50 do Banco 0 da EEPROM 24LC1025
#define Banco2 0x54 // Endereço 0x51 do Banco 1 da EEPROM 24LC1025
#define Banco3 0x51 // Endereço 0x54 do Banco 0 da EEPROM 24LC1025
#define Banco4 0x55 // Endereço 0x55 do Banco 1 da EEPROM 24LC1025
unsigned char VerNome[33] = "Teste com Memoria EEPROM 24LC1025";
unsigned char Unidade_Coletado[5] = "m3/h";
unsigned int MS_Byte, LS_Byte;
unsigned int Memoria = 65535;
unsigned char *Ponteiro_Geral;
float Constante_Bateria = 3.12345;
int length = 0;
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Desabilita o WDT
// Set up XT1
P5SEL |= BIT4+BIT5; // Select XT1
UCSCTL6 &= ~(XT1OFF); // XT1 On
UCSCTL6 |= XCAP_3; // Internal load cap
UCSCTL3 = 0; // FLL Reference Clock = XT1
//SFRIE1 = OFIE; // Enable osc fault interrupt
// Disable VUSB LDO and SLDO
USBKEYPID = 0x9628; // set USB KEYandPID to 0x9628
// access to USB config registers enabled
USBPWRCTL &= ~(SLDOEN+VUSBEN); // Disable the VUSB LDO and the SLDO
USBKEYPID = 0x9600; // access to USB config registers disabled
// Disable SVS
PMMCTL0_H = PMMPW_H; // PMM Password
SVSMHCTL &= ~(SVMHE+SVSHE); // Disable High side SVS
SVSMLCTL &= ~(SVMLE+SVSLE); // Disable Low side SVS
// P1.2/TA0.1
P1DIR |= BIT0; // P1.0 output
RTCCTL01 = RTCTEV_3;
RTCPS0CTL = RT0PSDIV_7; // Set RTPS0 to /256
RTCPS1CTL = RT1IP_6 + RT1PSIE + RT1SSEL_3;// Set RT1IP to /4, enable
// RT1PS interrupt and select
// RTOPS output as clock
// Rotina para Recuperação de Dados do Nome Atribuido ao Data Logger Anteriormente
// Rotinas para Recuperação de Dados do Fator da Vazão, Unidade Coletado e Intervalo Coletado Atribuido ao Data Logger Anteriormente
InitI2C(Banco1); // Inicializa o Banco1 da Memória EEPROM
EEPROM_PageWrite(0, VerNome, 32); // Salva na Memória EEPROM o Nome dado ao Data Logger
for(length=0;length<=32;length++)
{
VerNome[length] = ' ';
}
EEPROM_SequentialRead(0 , VerNome , 33); // Resgata o Último Nome Dado ao Data Logger
EEPROM_PageWrite(34, Unidade_Coletado, 5);
for(length=0;length<=4;length++)
{
Unidade_Coletado[length] = 0;
}
EEPROM_SequentialRead(34 , Unidade_Coletado , 5);
MS_Byte = Memoria; // Carrega o Valor Mais Significativo MSD
LS_Byte = Memoria>>8; // Carrega o Valor Menos Significativo LSD
Memoria = 0;
EEPROM_ByteWrite(40,MS_Byte); // Escreve na EEPROM o Byte MSB com o valor do Endereço da Última Memória
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(41,LS_Byte); // Escreve na EEPROM o Byte LSB com o valor do Endereço da Última Memória
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
Memoria = EEPROM_RandomRead(40); // Efetua a Leitura na EEPROM do Byte com o valor do Último Endereço de Memória Salvo
Memoria |= ((unsigned int)EEPROM_RandomRead(41)<<8);
Ponteiro_Geral = (unsigned char *)&Constante_Bateria; // Armazena o Valor da Constante da Bateria no Ponteiro 32-Bits
EEPROM_ByteWrite(42,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(43,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(44,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(45,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(46,*Ponteiro_Geral); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
*Ponteiro_Geral = 0; // Reseta a Variável de Ponteiro para Novo Cilco
Constante_Bateria = 0.0;
Ponteiro_Geral = (unsigned char *)&Constante_Bateria; // Efetua a Leitura dos Dados do Fator de Vazão Coletado Anteriormente na EEPROM por Ponteiro
*Ponteiro_Geral++ = EEPROM_RandomRead(42);
*Ponteiro_Geral++ = EEPROM_RandomRead(43);
*Ponteiro_Geral++ = EEPROM_RandomRead(44);
*Ponteiro_Geral++ = EEPROM_RandomRead(45);
*Ponteiro_Geral = EEPROM_RandomRead(46);
// Rotinas para Recuperação de Dados do Fator da Vazão, Unidade Coletado e Intervalo Coletado Atribuido ao Data Logger Anteriormente
InitI2C(Banco2); // Inicializa o Banco1 da Memória EEPROM
EEPROM_PageWrite(0, VerNome, 33); // Salva na Memória EEPROM o Nome dado ao Data Logger
for(length=0;length<=32;length++)
{
VerNome[length] = 0;
}
EEPROM_SequentialRead(0 , VerNome , 33); // Resgata o Último Nome Dado ao Data Logger
EEPROM_PageWrite(34, Unidade_Coletado, 5);
for(length=0;length<=4;length++)
{
Unidade_Coletado[length] = 0;
}
EEPROM_SequentialRead(34 , Unidade_Coletado , 5);
MS_Byte = Memoria; // Carrega o Valor Mais Significativo MSD
LS_Byte = Memoria>>8; // Carrega o Valor Menos Significativo LSD
Memoria = 0;
EEPROM_ByteWrite(40,MS_Byte); // Escreve na EEPROM o Byte MSB com o valor do Endereço da Última Memória
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(41,LS_Byte); // Escreve na EEPROM o Byte LSB com o valor do Endereço da Última Memória
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
Memoria = EEPROM_RandomRead(40); // Efetua a Leitura na EEPROM do Byte com o valor do Último Endereço de Memória Salvo
Memoria |= ((unsigned int)EEPROM_RandomRead(41)<<8);
Ponteiro_Geral = (unsigned char *)&Constante_Bateria; // Armazena o Valor da Constante da Bateria no Ponteiro 32-Bits
EEPROM_ByteWrite(42,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(43,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(44,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(45,*Ponteiro_Geral++); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
EEPROM_ByteWrite(46,*Ponteiro_Geral); // Escreve na EEPROM o Byte com o valor da Constante da Bateria
EEPROM_AckPolling(); // Verifica se completou o ciclo de escrita na EEPROM
*Ponteiro_Geral = 0; // Reseta a Variável de Ponteiro para Novo Cilco
Constante_Bateria = 0.0;
Ponteiro_Geral = (unsigned char *)&Constante_Bateria; // Efetua a Leitura dos Dados do Fator de Vazão Coletado Anteriormente na EEPROM por Ponteiro
*Ponteiro_Geral++ = EEPROM_RandomRead(42);
*Ponteiro_Geral++ = EEPROM_RandomRead(43);
*Ponteiro_Geral++ = EEPROM_RandomRead(44);
*Ponteiro_Geral++ = EEPROM_RandomRead(45);
*Ponteiro_Geral = EEPROM_RandomRead(46);
do{
__bis_SR_register(LPM3_bits + GIE);
__no_operation();
}
while(1);
__bis_SR_register(LPM3_bits + GIE);
}
// RTC Interrupt Service Routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=RTC_VECTOR
__interrupt void RTC_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(RTC_VECTOR))) RTC_ISR (void)
#else
#error Compiler not supported!
#endif
{
P1OUT ^= 0x01; // Toggle P1.0
RTCCTL01 &= ~RTCTEVIFG;
RTCPS1CTL &= ~RT1PSIFG;
}
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