SPC570S GPIO Setup

[NBula.1]

HI,

I have a question regarding the GPIO setup.

I have setup a few pins and outputs from the pin map editor. For all of those pins, the toggle

function work without any issue. However when I try to turn them on or off using the write_pad function or the set_pad, clear_pad function it does not work.

Nisal

[zambrano.luigi]

Hi,

please, could you share an example of code and clarify the expected behavior?

Regards,

Luigi

[NBula.1]

Hi Luigi,

Attached here with is the project.

Nisal

[zambrano.luigi · Accepted solution]

Hi,

I guess that you have configured the pin PE11 (GPIO75) because it is connected with the LED D13. So, I think the aim of the test is to see the LED D13 blinking. Let me underline that the behavior of the function pal_lld_writepad is exactly what expected. The first istruction in the cycle

pal_lld_writepad(PORT_E, PIN_GPIO75, PAL_HIGH);

will switch-off the LED D13, while the second instruction

pal_lld_writepad(PORT_E, PIN_GPIO75, PAL_LOW);

will switch-on the LED13.

If you want to see the LED D13 blinking, you have to add also a delay between the switch on and the switch off. So, you have to modify the cycle as below:

for (;;) {

osalThreadDelayMilliseconds(500);

pal_lld_writepad(PORT_E, PIN_GPIO75, PAL_HIGH);

osalThreadDelayMilliseconds(500);

pal_lld_writepad(PORT_E, PIN_GPIO75, PAL_LOW);

}

Moreover, please, remember to close the jumper JP14 that connect the LED D13 to the power.

Regards,

Luigi

[NBula.1]

HI Luigi,

I am extremely sorry, I missed that part. It is working fine now. Thank you for your help.

I have another question regarding using unions in SPC5. Does the SPC5 micro controllers follow big endian format or

little endian format?

Nisal

[zambrano.luigi]

Hi Nisal,

the SPC5 micros are big endian.

Regards,

Luigi

[PSeka.1]

Hi Luigi,

i m working on SPC560CL3 MCU. Is it possible to change big endian to little endian?

thanks and regards

prabu.s