COCleverOS
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Tasks Example

LED/UART Runtime

Demonstrate two readable RTOS tasks: one reports over serial, while one changes the LED state.

Download Code Back To Examples
Board LPCXpresso51U68 EVB OM40005
Status Verified
Download cleveros_led_uart_runtime.c

Run It

Use these commands from the COS workspace when the board and serial adapter are attached.

make -C firmware/lpc51u68_cleveros_boot clean allmake -C firmware/lpc51u68_cleveros_boot flashpython3 tools/uart_viewer.py --device <serial-device> --baud 9600

What To Look For

  • Application code stays in task functions.
  • The LED task and serial task run independently.
  • The demo is the easiest user-facing CleverOS example.
Download Code From This Website Open Repository 
static void task_uart(void)
{
    uint32_t count = 0u;

    for (;;) {
        rtos_log_task_state("rtos task0 uart tick ", rtos_tick_ms(), count++);
        rtos_delay_ticks(1000u);
    }
}

static void task_led(void)
{
    cos_lpc51u68_led_step_t step = COS_LPC51U68_LED_STEP_RED;

    for (;;) {
        rtos_set_led_step(step);
        step = (cos_lpc51u68_led_step_t)(((uint32_t)step + 1u) & 0x3u);
        rtos_delay_ticks(1000u);
    }
}