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#include <rtthread.h>
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#include <rtdevice.h>
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#define LED_PIN 40
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int main(void)
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{
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rt_pin_mode(LED_PIN, PIN_MODE_OUTPUT);
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while (1)
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{
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rt_pin_write(LED_PIN, PIN_HIGH);
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rt_thread_mdelay(500);
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rt_pin_write(LED_PIN, PIN_LOW);
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rt_thread_mdelay(500);
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}
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return RT_EOK;
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}
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