Part Number: TMS320F28379D
Other Parts Discussed in Thread: LAUNCHXL-F28379D, TMP006, C2000WARE
Tool/software: Code Composer Studio
Hi dear Texas Instrument community
I have a problem to work with the LAUNCHXL-F28379D and the sensor TMP006, I tried to write a register but I only can put the adres in I2CSAR and the value of the pointer in I2CDXR (pointer or the register in TMP) that is the first data that i need transmit. I am using the temperature sensor(TMP006) that I have in a BOOSTERPACK MKII, I enable alll interruptions to check if I have a problem with the interruption, and I put a ESTOP0; in the code of the interruption but never I have a interruption. This is my code and thanks for your answers.
#include "F28x_Project.h"
/* Defines*/
#define TMP006_ADDR 0b1000000
#define TMP006_Vobj 0x00
#define TMP006_Tamb 0x01
#define TMP006_Conf 0x02
#define TMP006_Conf_Val 0b0111000010000000
/*Message struct*/
struct TMP006_msg16WT{
Uint16 SlaveAddress; //slave direction
Uint16 Pointer; //Number of bits
Uint16 Msg; //Message to send
};
struct TMP006_msg16WT conf_TMP006 = { TMP006_ADDR, //
TMP006_Conf, //message for configure the function of the sensor
TMP006_Conf_Val}; //
/*Variables*/
Uint16 RES;
/*Prototype functions*/
void I2CB_Init(void); //Prototype function for init I2CB
void TMP006_W_R(struct TMP006_msg16WT *msg); //Prototype function for write register in objective (MASTER-TRANSMITER)
Uint16 TMP006_R_R(Uint16 ADDR, Uint16 Pointer); //Prototype function for read register in objective (1.MASTER-TRANSMITER y 2.MASTER-RECIVER)
__interrupt void i2c_int1b_isr(void); //Prototype function for interruption I2CB (ONLY A ESTO0; FOR BE SURE THAT A INTERRUP)
/**
* main.c
*/
int main(void)
{
InitSysCtrl(); //Init system
InitGpio(); //Init GPIO
EALLOW; //This is needed to write to EALLOW protected registers
DINT; //Clear all __interrupts
InitPieCtrl(); //Initialize PIE control registers (interrupts disabled and flags are cleared)
IER = 0x0000; //Disable CPU __interrupts
IFR = 0x0000; //clear all CPU __interrupt flags
InitPieVectTable(); //Initialize the PIE vector table
PieVectTable.I2CB_INT = &i2c_int1b_isr; //mapped I2CB_INT to direction of i2c_intb_isr
IER |= M_INT8; //Enable interruptions of the group 8 of the pie interrupt vectors
EINT; //Enable all interruptions
PieCtrlRegs.PIEIER8.bit.INTx3 = 1; //Enable interruption 3 of the group 8 that is I2CB interruption
EDIS; // This is needed to disable write to EALLOW protected registers
I2CB_Init(); //Execute function for init I2CB
DELAY_US(100);
DELAY_US(100);
TMP006_W_R(&conf_TMP006); //Execute function for WRITE A REGISTER in MASTER-TRANSMITER
while(1){
RES=TMP006_R_R(TMP006_ADDR, TMP006_Tamb); //Execute function for READ A REGISTER in MASTER-RECIVER
}
//return 0;
}
//
//function for init I2CB
//
void I2CB_Init(void){
EALLOW;
/*Configuracion de los pines*/
GpioCtrlRegs.GPBQSEL1.bit.GPIO40 = 3; // Asynch input GPIO40 (SDAB)
GpioCtrlRegs.GPBQSEL1.bit.GPIO41 = 3; // Asynch input GPIO41 (SCLB)
GpioCtrlRegs.GPBPUD.bit.GPIO40 = 0; // Enable pull-up for GPIO40 (SDAB)
GpioCtrlRegs.GPBPUD.bit.GPIO41 = 0; // Enable pull-up for GPIO41 (SCLB)
GpioCtrlRegs.GPBMUX1.bit.GPIO40 = 1; // Configure GPIO40 for SDAB
GpioCtrlRegs.GPBMUX1.bit.GPIO41 = 1; // Configure GPIO41 for SCLB
/*Configure the clock of the I2CB*/
I2cbRegs.I2CPSC.all = 16;
I2cbRegs.I2CCLKL = 10;
I2cbRegs.I2CCLKH = 5;
I2cbRegs.I2CIER.all = 0x7F; //Enable all interruptions
I2cbRegs.I2CMDR.bit.IRS = 1; //start I2CB module
EDIS;
}
//
//function for write register in objective (MASTER-TRANSMITER)
//
void TMP006_W_R(struct TMP006_msg16WT *msg){
Uint16 MSB,LSB,tmp;
LSB = msg->Msg & 0b0000000011111111;
tmp = msg->Msg & 0b1111111100000000;
tmp = tmp >> 8;
MSB = tmp;
I2cbRegs.I2CSAR.all = msg->SlaveAddress; //Put the direction of the SLAVE in the I2CSAR
I2cbRegs.I2CDXR.all = msg->Pointer; //put in the I2CDXR the pointer value (first data to transmit)
I2cbRegs.I2CCNT = 3; //3 messages = 1 for pointer + 2 data
while(I2cbRegs.I2CMDR.bit.STP == 1){} //be sure that STP = 0
while(I2cbRegs.I2CMDR.bit.STT == 1){} //be sure that STT = 0
while(I2cbRegs.I2CSTR.bit.BB == 1){} //I2CB is't busy
//Configure data transmit
I2cbRegs.I2CMDR.all= 0x4620; //0100 0110 0010 0000 1->FREE, MST, TRX, IRS
I2cbRegs.I2CMDR.bit.STT = 0x1; // Send START condition
I2cbRegs.I2CMDR.bit.STP = 0x1; // STOP condition will be generated when I2CCNT is zero
/****in this point the XRDY never is 1 to be sure that I can write a new message in I2CDXR***/
while(!I2cbRegs.I2CSTR.bit.XRDY){} //wait to XRDY to put the second message
/********************************************************************************************/
I2cbRegs.I2CDXR.all = MSB; //Put the second message
while(!I2cbRegs.I2CSTR.bit.XRDY){} //wait to XRDY to put the third message
I2cbRegs.I2CDXR.all = LSB; //Put the third message
while(!I2cbRegs.I2CSTR.bit.BB){} //Wait to finish the
}
//
//function for read register in objective (1.MASTER-TRANSMITER y 2.MASTER-RECIVER)
//
Uint16 TMP006_R_R(Uint16 ADDR, Uint16 Pointer){
Uint16 MSB,LSB;
I2cbRegs.I2CSAR.all = ADDR; //Put the direction of the SLAVE in the I2CSAR
I2cbRegs.I2CDXR.all = Pointer; //put in the I2CDXR the pointer value (first data to transmit)
I2cbRegs.I2CCNT = 3; //3 messages = 1 for pointer(trnasmit) + 2 data(recive)
while(I2cbRegs.I2CSTR.bit.BB == 1); //I2CB is't busy
//Configure data transmit
I2cbRegs.I2CMDR.all= 0x6E20; //0110 1110 0010 0000 1->FREE, STT, MST, TRX, IRS, STP
while(I2cbRegs.I2CSTR.bit.XRDY==0);
//Configure data recive
I2cbRegs.I2CMDR.all= 0x6420; //0110 0100 0010 0000 1->FREE, STT, MST, IRS || 0->STP, TRX
while(I2cbRegs.I2CSTR.bit.RRDY==0);
MSB=I2cbRegs.I2CDRR.all;
while(I2cbRegs.I2CSTR.bit.RRDY==0);
LSB=I2cbRegs.I2CDRR.all;
MSB=MSB << 8;
MSB=MSB&LSB;
return MSB;
}
//
//function for interruption I2CB (ONLY A ESTO0; FOR BE SURE THAT A INTERRUP)
//
__interrupt void i2c_int1b_isr(void){
ESTOP0;
}
