GPIO模式由IOMUX确定,由GPIO_GDIR确定输入还是输出;DR寄存器数据加载入output中。 • If GDIR[n] is set and IOMUXC input mode is GPIO, then reading DR[n] returns the contents of DR[n]. • If GDIR[n] is cleared and IOMUXC input mode is GPIO, then reading DR[n] returns the correspo...
/*按键初始化*/ CCM->CCGR1 |= CCM_CCGR1_CG15(0x3); //开启GPIO5的时钟 /*设置 绿灯 引脚的复用功能以及PAD属性*/ IOMUXC_SetPinMux(RGB_GREEN_LED_IOMUXC,0); IOMUXC_SetPinConfig(RGB_GREEN_LED_IOMUXC, button_PAD_CONFIG_DATA); GPIO5->GDIR &= ~(1<<1); //设置GPIO5_01为输入模式...
2. GPIO外设和I/O引脚的关系(IOMUXC外设) GPIO(General Purpose Input/Output)是芯片内的外设,每个GPIO外设连接到了外部的I/O引脚上,这时,和GPIO外设相连的I/O引脚起着通用输入输出的功能,所以被称为 GPIO 引脚。 但是,I/O引脚不仅可以和GPIO外设相连,还可以和芯片内部其它外设相连,比如和UART、IIC、SPI等外设...
2. GPIO外设和I/O引脚的关系(IOMUXC外设) GPIO(General Purpose Input/Output)是芯片内的外设,每个GPIO外设连接到了外部的I/O引脚上,这时,和GPIO外设相连的I/O引脚起着通用输入输出的功能,所以被称为 GPIO 引脚。 但是,I/O引脚不仅可以和GPIO外设相连,还可以和芯片内部其它外设相连,比如和UART、IIC、SPI等外设...
Android gpio设置默认拉高 安卓gpio,IOMUXC_SW_MUX_CTL_PAD_XX_XX和IOMUXC_SW_PAD_CTL_PAD_XX_XX这两种寄存器都是配置IO的,注意是IO!不是GPIO,GPIO是一个IO众多复用功能中的一种。比如GPIO1_IO00这个IO可以复用为:I2C2_SCL、GPT1_CAPTURE1、ANATOP_OTG1_ID、ENET1_REF_
采用iomux 的方法 1. 现采用 CSI_DATA01 用作 GPIO。2. 首先在 arch/arm/boot/dts/imx6ul-pinfunc.h 查找具体参数不再说明,查看 IMX6ULRM.pdf 手册中对应寄存器。3.在设备树中 iomux 中添加复用 gpio 引脚如下:同时修改设备树文件中,出厂的源码中将 csi 引脚用作摄像头。将复用功能去掉或者 disabled。如下图...
Because of this im wondering if its possible to use the IOMux to get the GPIO19 and GPIO20 on 2 other GPIO pins? The broken out pins on that board are. GND VSYS Reset BOOT GND 3.3V GPIO15 GPIO16 GPIO17 GPIO18 GPIO21 GPIO33 If this is possible could i IOMUX this to any of thos...
imx6ul-gpio", "fsl,imx35-gpio"; reg = <0x020ac000 0x4000>; interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; gpio-ranges = <&iomuxc 0 7 10>, <&iomuxc 10...
For GPIOs that are managed by other drivers, you must configure their pad IOMUX inside the driver node specific pinctrl-0 to work according to the specified interface functionalities. On the ConnectCore 8M Nano example from above, mca_cc8m node configures pinctrl_mca_cc8m: ConnectCore 8M Nano...
* * @note This function also configures the IOMUX for this pin to the GPIO * function, and disconnects any other peripheral output configured via GPIO * Matrix. * * @return Always return ESP_OK. */ esp_err_t gpio_reset_pin(gpio_num_t gpio_num); /** * @brief GPIO set interrupt ...