rk3288 uart0不接cts 和rts 是否能正常工作

hyl1718 · 发表于 2015-7-31 11:17:20

rk3288 uart0不接cts 和rts 是否能正常工作
硬件上面的cts 和rts 没有接。。
我把 uart_bt屏蔽了然后添加了uart_0
/*
&uart_bt {
      status = "okay";
      dma-names = "!tx", "!rx";
      pinctrl-0 = <&uart0_xfer &uart0_cts>;
};*/

&uart_0 {
      status = "okay";
      dma-names = "!tx", "!rx";
      pinctrl-0 = <&uart0_xfer &uart0_cts>;
};

并且在rk3288.dtsi中
aliases {
serial0 = &uart_0;
serial1 = &uart_bb;
serial2 = &uart_dbg;
serial3 = &uart_3;
serial4 = &uart_4;
。。。。
但是通过uart0 往外发数据用示波器量貌似没波形啊。。。

hyl1718 · 发表于 2015-7-31 11:54:44

/*
wireless-bluetooth {
      compatible = "bluetooth-platdata";

      //wifi-bt-power-toggle;

      uart_rts_gpios = <&gpio4 GPIO_C3 GPIO_ACTIVE_LOW>;
      pinctrl-names = "default","rts_gpio";
      pinctrl-0 = <&uart0_rts>;
      pinctrl-1 = <&uart0_rts_gpio>;

      BT,power_gpio = <&gpio4 GPIO_D3 GPIO_ACTIVE_HIGH>;
      BT,reset_gpio = <&gpio4 GPIO_D5 GPIO_ACTIVE_HIGH>;
      BT,wake_gpio = <&gpio4 GPIO_D2 GPIO_ACTIVE_HIGH>;
      BT,wake_host_irq = <&gpio4 GPIO_D7 GPIO_ACTIVE_LOW>;

      status = "disabled";
};
*/
已经关掉了~~~~

hyl1718 · 发表于 2016-5-23 11:22:21

已经解决了
设置&uart_0 {
      status = "okay";
      dma-names = "!tx", "!rx";
      pinctrl-0 = <&uart0_xfer &uart0_cts>;
};
即可

hyl1718 · 发表于 2017-8-9 08:28:09

先确保一下你的硬件是不是通的啊~~~