SIM7600CE-T，sim76xx_power_on和off问题

发布于 2019-08-16 15:26:14 浏览：1546 订阅该版

使用AT device访问SIM7600CE-T,感觉sim76xx_power_on和off写的有点问题，不管是on或是off，power_pin怎么都是写成PIN_LOW啊？哪位大侠指点一下，谢谢。
/**
 * power up sim76xx modem
 */
static void sim76xx_power_on(struct at_device *device)
{
    struct at_device_sim76xx *sim76xx = RT_NULL**;**

sim76xx = (struct at_device_sim76xx *) device->user_data**;**

/* not nead to set pin configuration for m26 device power on */
    if (sim76xx->power_pin == -1 || sim76xx->power_status_pin == -1)
    {
        return**;**
    }

if (rt_pin_read(sim76xx->power_status_pin) == PIN_HIGH)
    {
        return**;**
    }
    rt_pin_write(sim76xx->power_pin, PIN_HIGH)**;**

while (rt_pin_read(sim76xx->power_status_pin) == PIN_LOW)
    {
        rt_thread_mdelay(10)**;**
    }
    rt_pin_write(sim76xx->power_pin, PIN_LOW)**;**
}

static void sim76xx_power_off(struct at_device *device)
{
    struct at_device_sim76xx *sim76xx = RT_NULL**;**

sim76xx = (struct at_device_sim76xx *) device->user_data**;**

/* not nead to set pin configuration for m26 device power on */
    if (sim76xx->power_pin == -1 || sim76xx->power_status_pin == -1)
    {
        return**;**
    }

if (rt_pin_read(sim76xx->power_status_pin) == PIN_LOW)
    {
        return**;**
    }
    rt_pin_write(sim76xx->power_pin, PIN_HIGH)**;**

while (rt_pin_read(sim76xx->power_status_pin) == PIN_HIGH)
    {
        rt_thread_mdelay(10)**;**
    }
    rt_pin_write(sim76xx->power_pin, PIN_LOW)**;**
}