Portwell NANO-6050

Portwell Engineering Tool

GPIO Use Examples

Connect LEDs (though resistors!) to GPIO 1 & 2

blink.c
#include "stdafx.h"
#include "User_Api.h"
#include "PET_Type.h"
#include "time.h"
 
void delay(int sec)
{
    int ms = 1000 * sec;
    clock_t start_time = clock();
    while (clock() < start_time + ms);
}
 
int main()
{
	int i;
 
	// init portwell API
	PET_API_Init();
 
 
	// set GPIO 1 and 2 to outputs
	PET_GPIO_SetPinDirection (1, 1, 0);
	PET_GPIO_SetPinDirection (1, 2, 0);
 
	// blink!
	for (i = 1; i < 100; i++)
	{
		PET_GPIO_WritePin(1, 1, 1);
		PET_GPIO_WritePin(1, 2, 0);
		delay(75);
		PET_GPIO_WritePin(1, 1, 0);
		PET_GPIO_WritePin(1, 2, 1);
		delay(75);
	}
 
	// turn both LEDs off
	PET_GPIO_WritePin(1, 1, 0);
	PET_GPIO_WritePin(1, 2, 0);
 
 
	// close portwell API
	PET_API_Uninit ();
 
}

Build:

gcc blink.c -o blink libapi_x64.a -lm

Input Test

Connect GPIOs 3 & 4 to ground through buttons

inputTest.c
#include "stdafx.h"
#include "User_Api.h"
#include "PET_Type.h"
#include "time.h"
 
void delay(int sec)
{
    int ms = 1000 * sec;
    clock_t start_time = clock();
    while (clock() < start_time + ms);
}
 
int main()
{
	int i;
 
	// start portwell API
	PET_API_Init();
 
	// set pin 3 & 4 as an input
	PET_GPIO_SetPinDirection (1, 3, 1);
	PET_GPIO_SetPinDirection (1, 4, 1);
 
	unsigned char greenvalue = 0;
	unsigned char redvalue = 0;
 
	for (i = 1; i < 20; i++)
	{
		// read pins, print values
		PET_GPIO_ReadPin(1, 4, &greenvalue);
		printf("\n Green is: %d", greenvalue);
		PET_GPIO_ReadPin(1, 3, &redvalue);
		printf("\n   Red is: %d\n", redvalue);
		delay(200);
	}
 
	printf("\n");
 
	// close API
	PET_API_Uninit ();
 
 
}

Build:

gcc inputTest.c -o inputTest libapi_x64.a -lm

Button LED

Lights LEDs when buttons are pressed.

buttonLED.c
#include "stdafx.h"
#include "signal.h"
#include "User_Api.h"
#include "PET_Type.h"
#include "time.h"
 
static volatile sig_atomic_t keep_running = 1;
 
static void sig_handler(int _)
{
    (void)_;
    keep_running = 0;
}
 
int main(void)
{
 
	signal(SIGINT, sig_handler);
 
	// start portwell API
	PET_API_Init();
 
	// set pin 3 & 4 as inputs
	PET_GPIO_SetPinDirection (1, 3, 1);
	PET_GPIO_SetPinDirection (1, 4, 1);
 
	// set pin 1 & 2 as outputs
	PET_GPIO_SetPinDirection (1, 1, 0);
	PET_GPIO_SetPinDirection (1, 2, 0);
 
	// pull 1 & 2 low
	PET_GPIO_WritePin(1, 1, 0);
	PET_GPIO_WritePin(1, 2, 0);
 
	unsigned char greenvalue = 0;
	unsigned char redvalue = 0;
 
	while (keep_running)
	{
		// read pins, print values
		PET_GPIO_ReadPin(1, 4, &greenvalue);
		PET_GPIO_ReadPin(1, 3, &redvalue);
 
		// check for button presses (0)
		// bring pin high if pressed, low when released
 
		// green
		if (greenvalue == 0) {
			PET_GPIO_WritePin(1, 2, 1);
			} else {
		if (greenvalue == 1) {
			PET_GPIO_WritePin(1, 2, 0);
		}
 
		//red
		if (redvalue == 0) {
			PET_GPIO_WritePin(1, 1, 1);
			} else {
		if (redvalue == 1) {
			PET_GPIO_WritePin(1, 1, 0);
			}
		}
	}
 
 
	}
	// close API
	PET_API_Uninit ();
 
    return EXIT_SUCCESS;
}

Heartbeat

heartbeat.c
#include "stdafx.h"
#include "signal.h"
#include "User_Api.h"
#include "PET_Type.h"
#include "time.h"
#include "stdio.h"
 
static volatile sig_atomic_t keep_running = 1;
 
static void sig_handler(int _)
{
    (void)_;
    keep_running = 0;
}
 
void delay(int sec)
{
    int ms = 1000 * sec;
    clock_t start_time = clock();
    while (clock() < start_time + ms);
}
 
int main(void)
{
 
	signal(SIGINT, sig_handler);
 
 
	// init portwell API
	PET_API_Init();
 
 
	// set GPIO 1 and 2 to outputs
	PET_GPIO_SetPinDirection (1, 2, 0);
 
	// blink!
	while (keep_running)
	{
		PET_GPIO_WritePin(1, 2, 1);
		delay(75);
		PET_GPIO_WritePin(1, 2, 0);
		delay(100);
		PET_GPIO_WritePin(1, 2, 1);
		delay(75);
		PET_GPIO_WritePin(1, 2, 0);
		//delay(500);
		sleep(2);
	}
 
	// turn both LEDs off
	PET_GPIO_WritePin(1, 2, 0);
 
	// close portwell API
	PET_API_Uninit ();
 
	return EXIT_SUCCESS;
 
}
nano-6050.txt · Last modified: 2022/04/21 13:00 by john
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