TMS570LS20216 GIO pins

Hello Haixiao,

Thank you very much for information. I will keep it in mind. Development kit was delivered yesterday. I will start working with it in several days. Possibly futher questions will appear again.

Regards,

Vitalij

Hello Haixiao,

I am trying to get started with TMDX570LS20SUSB. I hope that CCS project is attached to this message.

1513.Example_HET.zip 

The screenshot of the CCS project is shown below too:

The code should turn ON the HET0 LED in the way you showed. I suppose that it corresponds to the NHET [0] pin. The problem is so that HET0 LED is off after the code is downloaded to the microcontroller. HalCoGen was not used for this project. 

The JTAG LED blinks constantly.

Should any additional initialization be performed additionally? For example clock, watchdog timer.... Should I also periodically reset WDT counter or is it inactive after reset.

What is default clock source? Microcontroller initialization for safety operation is not required at the moment.

Regards,

Vitalij

Hello Haixiao,

1) HET

The project for driving HET LED outputs is working normally now. HalCoGen was used to enable only GIO driver. I have also changed pull-up and pull-down settings for another HET inputs. It is OK too.

The only problem is so that physical addresses are not convenient to write the code. For example, it would be much easier to use HETDIR  |= (1 << PIN_HET_0); instead of 

*((volatile unsigned int *) 0xFFF7B84C) |= (1 << PIN_HET_0); to set NHET[0] direction to output. Is it possible? Are the registers already predefined?

2) SCI

I have also tried to establish UART communication for the next example project. For this purpose SCI2 was selected. At first this module was configured to operate without interrupts. So, polling mode was used. This also worked normally.

Now I am trying to use interrupts for data transmission. The first byte is sent from main (), but the next bytes should be transmitted from TX IRQ. For this purpose TX INT (high level) for SCI2 is enabled from HalCoGen. VIM channel 49 (LIN2 high) is enabled too. Is it right?  I see that microcontroller sends only one first byte. So, TX interrupt does not operate correctly. Where is it necessary to handle interrupts? I found out from several examples that all interrupts should be handled in Notifications. You will see in the attached project, that sciNotification is modified in the notification.c file. Only 1 command is added to send single byte. Is it correct?

I do not really understand how different interrupts will be distinguished. For example, our final project will have 2 SCIs. Each of them will have RX and TX interrupts. Can you show me an example for handling RX and TX interrupts.  

6683.SCI.zip

Best regards,

Vitalij

P.S.

The purpose of our activities is to switch from MSP430 to TMS570 microcontrollers because they are suitable for safety critical applications. I have attached an example where initialization of 2 USART modules is shown for MSP430F169 microcontroller. RX and TX interrupts are used for each USART module to send and receive bytes. So, 4 different IRQ routines are included. In general I expected that TMS570 interrupts are handled in a very similar way. Aren't they? How do IRQ routines look for TMS570 microcontrollers?   

7674.USART_MSP430.c

Vitaly Stepin said:

Hello Haixiao,

1) HET

The project for driving HET LED outputs is working normally now. HalCoGen was used to enable only GIO driver. I have also changed pull-up and pull-down settings for another HET inputs. It is OK too.

The only problem is so that physical addresses are not convenient to write the code. For example, it would be much easier to use HETDIR  |= (1 << PIN_HET_0); instead of 

*((volatile unsigned int *) 0xFFF7B84C) |= (1 << PIN_HET_0); to set NHET[0] direction to output. Is it possible? Are the registers already predefined?

HW: If you indude "het.h", you can use 

hetREG1->DIR |=xxxxxx

or call the function: (you have to include 'gio.h' too)

gioSetDirection(hetPORT1, uint32_t dir);

2) SCI

I have also tried to establish UART communication for the next example project. For this purpose SCI2 was selected. At first this module was configured to operate without interrupts. So, polling mode was used. This also worked normally.

Now I am trying to use interrupts for data transmission. The first byte is sent from main (), but the next bytes should be transmitted from TX IRQ. For this purpose TX INT (high level) for SCI2 is enabled from HalCoGen. VIM channel 49 (LIN2 high) is enabled too. Is it right?  I see that microcontroller sends only one first byte. So, TX interrupt does not operate correctly. Where is it necessary to handle interrupts? I found out from several examples that all interrupts should be handled in Notifications. You will see in the attached project, that sciNotification is modified in the notification.c file. Only 1 command is added to send single byte. Is it correct?

HW: I think it is LIN1 interrupt. Inside the module, if you configure it to high level it is no 13, if you configure it to low level ,it is no 27.

Did you enable the IRQ in the CPU? if not, in the sys_main.c please add, (if you only want to enable the IRQ, it is "cpsie i")

asm(" cpsie if");

I do not really understand how different interrupts will be distinguished. For example, our final project will have 2 SCIs. Each of them will have RX and TX interrupts. Can you show me an example for handling RX and TX interrupts.  

HW: Read the SCIFLR or SCIINTVECT0/SCIINTVECT1 register, and then switch....case..

If you can not get it working, post the project in the forum.

6683.SCI.zip

Best regards,

Vitalij