serial terminal issues

Manjunathan K

Other Parts Discussed in Thread: HALCOGEN

i interfaced two flow sensors to ADC module and viewed the output in software serial terminal , it is fine i got the output. if i tried to interface more than four analog sensors the serial terminal is not working. how can i rectify this problem.

over 10 years ago

0 Sunil Oak over 10 years ago

TI__Mastermind 49120 points

We will need more information to help you with this. Can you upload the CCS project that you are having this problem on?

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

3750.sys_main.c

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

Thank you Mrr. Sunil Oak. I have uploaded the Sys.main.c of ccs project. please help me to rectify the problem

Thanks and regards
K.Manjunathan

0 Sunil Oak over 10 years ago in reply to Manjunathan K

TI__Mastermind 49120 points

You need to increase the size of the array adc_data. Currently it is declared as:

adcData_t adc_data[2];

You need to increase this array depending on the number of ADC channels you are converting.

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

ok thank you Mr. sunil. and i will come back to you if i have any struggle in my further progress.

Thanks and regards

K.Manjunathan

PSGIAS

0 Manjunathan K over 10 years ago in reply to Manjunathan K

Expert 2825 points

I need a clarification on few lines in the coding...please see the codes pasted below

id = adc_data[1].id;
value = adc_data[1].value;

sciDisplayText(scilinREG,&TEXT1[1],TSIZE1); /* send text 1 */
sciDisplayData(scilinREG,(uint8*)&id,4); /* send data 1 */
sciDisplayText(scilinREG,&TEXT2[1],TSIZE2); /* send text 2 */
sciDisplayData(scilinREG,(uint8*)&value,4); /* send data 2 */

did the value [1] represents the ADC pin that i am using in my design. or actually what is represents.

i am not using the pins one by one. i am randomly using the pins. for eg am using ADC1 pins (0, 1, 4, 5, 10, 11) in my application. how can i sync the corresponding ADC pins in the program. whether it is needed or not.

Thanks and Regards
K.Manjunathan
PSGIAS

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

it is working fine for 3 sensors. If i try to interface 6 sensors it is not working Sir. 1307.sys_main.c

0 Sunil Oak over 10 years ago in reply to Manjunathan K

TI__Mastermind 49120 points

Please upload the adcInit() function as well. It is in adc.c

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

6175.adc.cok Sir.,,

please find the adcInit(viod):void

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

This morning i tried and i got some results. but only once and there is no output for above attached program. please find the attached jpeg image of terminal window output

0 Sunil Oak over 10 years ago in reply to Manjunathan K

TI__Mastermind 49120 points

You should upload your entire project. It seems like you are trying to trigger group1 conversions using GIOB[0]. However the adcInit() function configures the group1 trigger source as follows:

adcREG1->G1SRC = (uint32)0x00000008U | (uint32)ADC1_EVENT;

ADC1_EVENT is defined as 0, so the above statement will write 0x8 into the G1SRC register. This means that the conversions for group1 are triggered by a rising edge on AD1EVT pin, not GIOB[0].

It would really help if you upload the entire project.

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

4428.fine.rari have attached the rar file of my project. please find the attachment

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

i am not familiar with programming. i can able to see the data in adc.c file that you mentioned above. what are all the changes i need to do Sir.,

Thanks and regards
K.Manjunathan

0 Sunil Oak over 10 years ago in reply to Manjunathan K

TI__Mastermind 49120 points

HALCoGen allows you to configure the trigger source correctly. To select GIOB[0] as the trigger source, you need to go to the ADC1 Group1 tab and select GIOB0 from the pull-down menu. See below:

I have also corrected some non-critical portions of your project. This had to do with the text display on the terminal. The modified project is attached. Below is a screenshot showing all 6 channel conversions displayed.

7357.fine.zip

This should close this topic.

0 Manjunathan K over 10 years ago in reply to Sunil Oak

Expert 2825 points

Thanks a lot Mr. sunil Oak. one last question related to sensor interface. by enabling the ADC group 1 Channel pins and by increasing array size in the program, is it possible to interface more sensors.

Thanks and regards

K.Manjunathan

PSGIAS.

0 Sunil Oak over 10 years ago in reply to Manjunathan K

TI__Mastermind 49120 points

Yes, the RM48x MCUs support up to 24 ADC input channels for ADC1 and up to 16 input channels for ADC2 (all shared with ADC1). The array size can be managed in software to store the number of results you want.

You can also make three different sets of input channels and assign them to three different conversion groups. Then you can define how to trigger each conversion group separately. You can configure all this using HALCoGen.

Regards, Sunil

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serial terminal issues