NXP LPC1766 Example Code for CoOS Free RTOS
Device:
Evaluation Board:
Complier:
Tasks:
| init_task |
initialize task,use to create flags, mutexes and other tasks |
| taskA |
control the LED_0(P1.28) and the switch of the simulator LED0 on LCD, at the same time call signal_func ( ) to coordinate task running |
| taskB |
control the LED_1(P1.29) and the switch of the simulator LED1 on LCD, at the same time call signal_func ( ) to coordinate task running |
| taskC |
control the LED_2(P1.31) and the switch of the simulator LED2 on LCD, at the same time call signal_func ( ) to coordinate task running |
| taskD |
control the LED_3(P2.2) and the switch of the simulator LED3 on LCD, at the same time call signal_func ( ) to coordinate task running |
| clock |
control LED_7(P2.6 ) and the switch of the simulator LED7 on LCD, it flickers every 50 ticks(0.5s) |
| lcd |
display the words and change the colour of the words every time when all the LEDs has flickered.(it changes colour every 4s) |
Descriptions:
- This example uses 5 tasks to control the switch of 5 leds, at the same time simulate the flickering state of the 5 leds on LCD, actually to simulate the driver of Step-motor, 4 LEDs flickering simulates the 4 states of output.
The lighting state of LED is:
LED7 lights every 0.5s, other 4 LEDs' states of lighting are as follows:
LED0-->LED0,LED1-->LED1-->LED1,LED2-->LED2-->LED2,LED3-->LED3-->LED3,LED0-->LED0-->LED0,LED1-->...
The LED flickering state simulated on LCD is the same as the above. The colour of the words on LCD will change everytime when LED0...LED4 has been through a cycle.
System Configuration:
- XTAL freq = 12.00 MHz
- SYSCLK freq = 72.00 MHz
- System Tick freq = 100Hz (10ms)
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