DA1468x

681 USB口做普通IO口使用

Tue, 2016-10-25 08:45 -- zhouchen

因IO口有限,在使用DA14681 WLCSP封装需要将USB口做普通IO口使用,当普通IO口也有局限性,一个是睡眠时,IO口状态为未知的状态,IO口高电平只能为3.3V,
但是我在代码里面将睡眠模式关闭:
/* Set the desired sleep mode. */
pm_set_wakeup_mode(true);
pm_set_sleep_mode(pm_mode_active);
同时在prvSetupHardware函数里面添加pm_system_init(periph_gpio_setup); 在periph_gpio_setup函数里面设置添加
USB->USB_MCTRL_REG = 0;
CRG_PER->USBPAD_REG = 0;
hw_gpio_configure_pin(HW_GPIO_PORT_1,HW_GPIO_PIN_1,HW_GPIO_MODE_OUTPUT,HW_GPIO_FUNC_GPIO,true);

DA1468x RSSI Measurement

Thu, 2016-10-20 13:05 -- adrianhwmorgan

Dear Dialog,

I've got some simple packet sniffing code running on both a DA14583 devkit and a DA14681 devkit,
This prints out packet data to a console window via the UART.

For some reason it appears that the RSSI value from the DA14681 is around 20 dBm less than the RSSI seen by the DA14583.
Also, the 14681 values fluctuate a lot more than the 14583 values.

Both are using the built-in PCB antenna on the daughterboard.

Is there any reason why the RSSI values should be so different between the two devices ?

Thanks,
Adrian Morgan

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