Problem I2C hercules LS570 (3137)

Franco Degioanni

Other Parts Discussed in Thread: HALCOGEN

Hello i´m trying to run I2C example, but i have a problem. In the example sends "H E R C U L E S M I R O - T I" and simulates the reception. After sends 9 bytes the program stop de trasmition and keep waiting in a bucle while in the rutine I2Crecivebyte:

uint8 i2cReceiveByte(i2cBASE_t *i2c)

{
/*SAFETYMCUSW 28 D MR:NA <APPROVED> "Potentially infinite loop found - Hardware Status check for execution sequence" */
while ((i2c->STR & (uint32)I2C_RX_INT) == 0U)
{
} /* Wait */
/* USER CODE BEGIN (25) */
/* USER CODE END */

return i2c->DRR;
}

the program "stoped" in the line "while ((i2c->STR & (uint32)I2C_RX_INT) == 0U) "

What can be the problem?

Thank you

over 11 years ago

0 Anthony F. Seely over 11 years ago

TI__Guru 68920 points

Franco,

I don't understand what you mean by 'simulates reception' and that sounds important if the issue is in reception - so maybe you could provide more details about this?

What is your hardware setup? I2C provides a mechanism for the slave device to delay transmission by pulling the SCL line low and sometimes a routine can hang because of this. Have you checked the SCL / SDA lines when this hang up occurs to make sure it's not an external issue?

0 Franco Degioanni over 11 years ago in reply to Anthony F. Seely

Prodigy 80 points

Hi, i setup the hardward such as the example explains. Then i copy the code and i run it. I'm not modify anithing. When i debug, the problem occurs. The program is stuck in the while and not transmit or recibe anymore.

0 Anthony F. Seely over 11 years ago in reply to Franco Degioanni

TI__Guru 68920 points

Franco,

Which example are you trying to run? (if it's from HalCoGen would you please let me know the version # and folder path).

-Anthony

0 Franco Degioanni over 11 years ago in reply to Anthony F. Seely

Prodigy 80 points

The version is HalCoGen 3.09.00 and the example names "example_I2Ccomunication" in the folder "examples/TMS570LS31x".

I'm only try to follow the example but i have problems.

Thansk

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Problem I2C hercules LS570 (3137)