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Working blinky demo using FreeRTOS

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This commit is contained in:
Romain Goyet
2015-05-04 18:32:32 +02:00
parent b350ea3739
commit f0098487c7
1 changed files with 32 additions and 17 deletions
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49
src/freertos_blinky.c
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@@ -4,11 +4,28 @@
#include <timers.h>
#include <semphr.h>
void BlinkGreenLed(void * pvParameters) {
while(1) {
vTaskDelay(100);
GPIO_ODR(GPIOG)->ODR13 = 0;
vTaskDelay(100);
GPIO_ODR(GPIOG)->ODR13 = 1;
}
}
void BlinkRedLed(void * pvParameters) {
int delay = 10;
while (1) {
vTaskDelay(delay);
GPIO_ODR(GPIOG)->ODR14 = 1;
vTaskDelay(delay);
GPIO_ODR(GPIOG)->ODR14 = 0;
delay++;
}
}
int main(int argc, char * argv[]) {
vTaskStartScheduler();
// We want to blink LEDs connected to GPIO pin G13 and G14
// We want to blink LEDs connected to GPIO pin G13 and G14
// (this is documented in our board's PDF)
//
// GPIO are grouped by letter, and GPIO "G" live on the "AHB1" bus
@@ -22,21 +39,19 @@ int main(int argc, char * argv[]) {
GPIO_MODER(GPIOG)->MODER13 = GPIO_MODE_OUTPUT;
GPIO_MODER(GPIOG)->MODER14 = GPIO_MODE_OUTPUT;
// Per doc, the output is push-pull by default (yay)
// And we should also set the output speed, but really
// we don't care (we're doing something super slow)
long delay = 50000;
BaseType_t success = xTaskCreate(BlinkGreenLed,
"BlkGrn",
100, // Stack size
NULL, // Parameters
2,
NULL);
xTaskCreate(BlinkRedLed, "BlkRed", 100, NULL, 2, NULL);
vTaskStartScheduler();
while (1) {
GPIO_ODR(GPIOG)->ODR13 = 0;
GPIO_ODR(GPIOG)->ODR14 = 1;
// sleep(delay);
GPIO_ODR(GPIOG)->ODR13 = 1;
GPIO_ODR(GPIOG)->ODR14 = 0;
// sleep(delay);
// We should never get here
}
}