RM44L920: SCI Non-interrupt mode data recieved is not consistent.

Hi Karthik,

Can you try below slightly modified code? The modification is "sciReceiveByte" it self returns the character from RD register, so no further read from RD register is required.

void get_gps(){
    j=0;

    char c;
    c = sciReceiveByte(scilinREG);

    if(c=='$'){
             sciReceive(scilinREG,BUFFER_SIZE,(unsigned char *)rxBuffer);

             char *token;

                 token = strtok(rxBuffer,",");
                 latitude = strtod(token,&endptr);

                 while (token != NULL && j<4) {

                     if (j ==1) {
                       longitude = strtod(token,&endptr);
                     }
                     else if (j == 2) {
                         velocity = strtod(token,&endptr);
                     }
                     else if(j==3){
                        altitude = strtod(token,&endptr);
                     }

                     token = strtok(NULL,",");
                     j++;
                 }
          }
    }

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Thanks & regards,
Jagadish.

Hi jadish,

Sure i will test and btw do the above method is fast and accurate for recieving SCI data or should i use interrupt method.

Hi Karthik,

KARTHIK R said:

the above method is fast and accurate for recieving SCI data or should i use interrupt method.

The above method is good if your code doesn't have any other modules code to execute, but if your code involves multiple modules of code then it would be better to go for interrupt method instead of polling till the characters received.

--

Thanks & regards,
Jagadish.

Hi Jagadish,

Yes , i have some other modules also such as CAN ,SPI,ADC .so can you send me a code which i could replicate the same above code with interrupt mode.

Hi Karthik,

Yes, you can go for interrupt mode for optimized solution.

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Thanks & regards,
Jagadish.