printf doesn't seem to work

[TheHebro]

Weird question, perhaps, but has anyone else had any issues getting the C function printf() to display text on the Vita's screen (as seen in the following example: https://github.com/vitasdk/samples/blob ... src/main.c)?

I've put together a simple program that's supposed to print the name of the current button being pressed. My program is able to compile and be installed on my Vita without issue, but I'm met with a black screen whenever I run it. The program exits when I press both start and select as it should (just like VitaTester), so I can tell that this isn't a matter of input going unrecognized.

Here's my code:

Code: Select all

#include <psp2/kernel/processmgr.h>
#include <psp2/ctrl.h>
#include <stdio.h>

#define TRUE 1
#define FALSE 0

#define EXIT_COMBO (SCE_CTRL_START | SCE_CTRL_SELECT)

SceCtrlData gamepad;

int main(int argc, char *argv[]) 
{
	sceCtrlSetSamplingMode(SCE_CTRL_MODE_ANALOG_WIDE);
	fflush(stdout);
	
	while (TRUE)
	{
		sceKernelPowerTick(0);
		sceCtrlPeekBufferPositive(0, &gamepad, 1);
		
		if (gamepad.buttons == EXIT_COMBO)
		{
			break;
		}
		
		if (gamepad.buttons & SCE_CTRL_UP)
		{
			printf("DPAD Up\n");
		}
		else if (gamepad.buttons & SCE_CTRL_DOWN)
		{
			printf("DPAD Down\n");
		}
		else if (gamepad.buttons & SCE_CTRL_LEFT)
		{
			printf("DPAD Left\n");
		}
		else if (gamepad.buttons & SCE_CTRL_RIGHT)
		{
			printf("DPAD Right\n");
		}
		else if (gamepad.buttons & SCE_CTRL_CROSS)
		{
			printf("X\n");
		}
		else if (gamepad.buttons & SCE_CTRL_CIRCLE)
		{
			printf("O\n");
		}
		else if (gamepad.buttons & SCE_CTRL_SQUARE)
		{
			printf("[]\n");
		}
		else if (gamepad.buttons & SCE_CTRL_TRIANGLE)
		{
			printf("^\n");
		}
		else if (gamepad.buttons & SCE_CTRL_SELECT)
		{
			printf("Select\n");
		}
		else if (gamepad.buttons & SCE_CTRL_START)
		{
			printf("Start\n");
		}
		else if (gamepad.buttons & SCE_CTRL_LTRIGGER)
		{
			printf("L\n");
		}
		else if (gamepad.buttons & SCE_CTRL_RTRIGGER)
		{
			printf("R\n");
		}
	}
	
	sceKernelExitProcess(0);
	return 0;
}

Any ideas would be greatly appreciated, thanks.

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[Jhon Doe or John Doe]

printf does not output to the screen.

On Rejuvenate it printed to the command prompt on the computer.

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[TheHebro]

Thanks for the tip, friend. Your tip led me to try the vita2d library instead, and that got the ball rolling. Onto the next project I go.

[Dmitry Work]

why it not work(as you wish): coz u make crosscompiling -> coz STANDART lib for i386->coz lib by lib use oun output function, so your lib(sdk) must use some adress/api/console (something to output). As Vita SDK tool is "arm-eabi" it use (i think) newlib or similar and printf output to UART or etc.