ti hercules spi interrupt

Ahican,

look at esm.h and esm.c for example of how to create an interrupt using pragma.

You need to define an spi interrupt function and using #pragma to assign it to VIM interrupt line.

Then, inside this interrupt function, you can call back the spiNotification() function to do whatever you want to do.

when do the call back, pass in the flag register values like spi->FLG where spi is the pointer to your SPI base address in your current scope.  e.g. spiREG4.

Hope this help.

Dear Henry,

Firstly,thanks for your response.

I have already looked at esm.h and esm.c. In addition, I found spiNotification()  function decleration in spi.c and spi.h,,so I've learned flags parameter,and I can use spiNotification function,But I have another question.I am trying to spi master slave example in HalCoGen(for TMS570LS04x). 

***spiSendAndGetData(spiREG2, &dataconfig1_t, 16, TX_Data_Master, RX_Data_Slave);

I used above code,but RX_Data_Slave buffer didn't change.My Halcogen is true according to example steps.

I'd appreciate if you help again.

Best Regards

Ahican.

Ahican,

This topic has been discussed quite a bit in the forum.

You an do a small search.

here is a few example link:

http://e2e.ti.com/support/microcontrollers/hercules/f/312/p/201440/727311.aspx#727311

http://e2e.ti.com/support/microcontrollers/hercules/f/312/p/277903/970279.aspx#970279

Hope this helps you...

Ahican,

I've created a simple project running on the launch pad to demonstrate the usage of spiEndNotification().

In this example, spiSendAndGetData() function is used to send 16 data via SPI2.
To simplify the code and the hardware, SPI2 is configured in analog loop back mode. That means that all data send on the SIMO pins are loop back on the SOMI. In other words, each data that are transmitted out are also received.

spiSendAndGetData() uses interrupt and a call to spiEndNotification() is done when the full buffer is transmitted. In this example, 16 datas.

In the main code, after the call to spiSendAndGetData() the code is in a while loop and increment a counter while waiting for a flag (done) to be set. The spiEndNotification() is setting this flag when the transmission is finished.

While the SPI is transmitting the 16 datas, the CPU is free to do something else.

Please have a try and let me know if this code is helpful.

1488.SPI_Transmit_Interrupt.zip

Dear Jean-Marc,

Thank you for your interest my question.Your code is running ,but you used only spi2.I want to do spi communication between spi1 and spi2 on a tms570ls0432 (just one evaluation kit).For this, firstly I am trying spi master and slave example in HalCoGen help menu. I did this example but, RX_Data_Slave[0]=0 , RX_Data_Slave[1]=0 ...

I am not sure HalCoGen parts.

This file contains an example of SPI1 and SPI2 Master / Slave configurations.
*
* PIN Connections must be as Below
* --------------- ---------------
* SPI1 ( Master ) SPI2 ( SLave)
* --------------- ---------------
* SIM0 ---> SIMO
* S0MI <--- SOMI
* CLK ---> CLK
* CS0 ---> CS0
*
* ------------------
* GUI configurations
* ------------------
* 1) Driver TAB
* - Select SPI2
* - Select SPI1
* 2) VIm Channel 0-31
* - Enable SPI2 Level 0 and Level 1 channels.
* 3) SPI2 TAB
* - SPI2 Global SubTAB
* - Uncheck Master Mode
* - Uncheck Internal Clock
* - SPI2 Port SubTAB
* - Uncheck DIR for CS 0
* 3) SPI1 TAB
* - Have it default
* 4) Generate Code.

If you let me I want ask another question:

I want to do new spi communication between tms570ls0432 and rm42l432.

is it possible ? 

In addition, How should be pin configuration on HalCoGen?

I'd appreciate if you help me.

Best Regards,

Ahican

Electronic Engineer

Hi,

    Thanks for your replay, and I have worked out  the spi communication. thanks.