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#include <FreeRTOS.h>
#include <task.h>
#include <semphr.h>
#include <lpc17xx_gpio.h>
#include <BoardConsole.h>
#include <osdebug.h>
#include <stdio.h>
#define LED1_wire 18
#define LED2_wire 20
#define LED3_wire 21
#define LED4_wire 23
static void setupLEDs() {
GPIO_SetDir(1, (1 << LED1_wire) | (1 << LED2_wire) | (1 << LED3_wire) | (1 << LED4_wire), 1);
}
static void litLED(int led, int value) {
if ((led > 4) || (led < 0))
return;
switch (led) {
case 1: led = 1 << LED1_wire; break;
case 2: led = 1 << LED2_wire; break;
case 3: led = 1 << LED3_wire; break;
case 4: led = 1 << LED4_wire; break;
}
if (value) {
GPIO_SetValue(1, led);
} else {
GPIO_ClearValue(1, led);
}
}
xSemaphoreHandle handle;
static void simpleTask1(void *p) {
while (1) {
xSemaphoreTake(handle, portMAX_DELAY);
BoardConsolePuts("Task 1");
xSemaphoreGive(handle);
vTaskDelay(1234);
}
}
static void simpleTask2(void *p) {
while (1) {
xSemaphoreTake(handle, portMAX_DELAY);
BoardConsolePuts("Task 2");
xSemaphoreGive(handle);
vTaskDelay(1357);
}
}
static void badTask(void *x) {
vTaskDelay(5000);
char * p = (char *) 0x10000000;
*p = 42;
}
int main() {
handle = xSemaphoreCreateMutex();
printf("Hello world - from stdio!\r\n");
setupLEDs();
litLED(1, 0);
litLED(2, 0);
litLED(3, 0);
litLED(4, 0);
BoardConsolePuts("Creating simple tasks.");
xTaskCreate(simpleTask1, (signed char *) "st1", configMINIMAL_STACK_SIZE, (void *)NULL, tskIDLE_PRIORITY, NULL);
xTaskCreate(simpleTask2, (signed char *) "st2", configMINIMAL_STACK_SIZE, (void *)NULL, tskIDLE_PRIORITY, NULL);
xTaskCreate(badTask, (signed char *) "bad", configMINIMAL_STACK_SIZE, (void *)NULL, tskIDLE_PRIORITY, NULL);
BoardConsolePuts("Scheduler starting.");
vTaskStartScheduler();
BoardConsolePuts("Scheduler exitting.");
return 0;
}
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