led_cdev[0].va_iomux = ioremap(PMU_GRF_GPIO3B_IOMUX_H, 4); led_cdev[0].va_ddr = ioremap(GPIO_SWPORT_DDR_L, 4); led_cdev[0].va_dr = ioremap(GPIO_SWPORT_DR_L, 4); //动态分配主设备号,从设备号为0,可通过cat /proc/devices查看分配my_chrdev的主设备号 ret = alloc_chrdev_regi...
GPIO0B7在GPIO_SWPORT_DDR_L上所以,方向寄存器的偏移地址为0x0008。接着查看GPIO_SWPORT_DDR_L寄存器的具体描述,如下图(图129-25)所示: 如上图(图 129-25)所示,[31:16]位属性是WO,也就是只可写入。这[31:16]位是写标志位,是低16位的写使能。如果低16位中某一位要设置输入输入输出,则对应高位写标志...
[60]ddr_efuse_type: 0x0 [63]trefi:7.8ms [65][AUTO DEBUG] rank 0 row = 15 [68][AUTO DEBUG] rank 0 bank = 8 [71][AUTO DEBUG] rank 0 page size = 2 KB [75]DRAM BOOT DRIVE INFO: V0.33 [78]DRAM CLK = 792 MHz [80]DRAM Type = 3 (2:DDR2,3:DDR3) [83]DRAMC ZQ valu...
[60]ddr_efuse_type: 0x0 [63]trefi:7.8ms [65][AUTO DEBUG] rank 0 row = 15 [68][AUTO DEBUG] rank 0 bank = 8 [71][AUTO DEBUG] rank 0 page size = 2 KB [75]DRAM BOOT DRIVE INFO: V0.33 [78]DRAM CLK = 792 MHz [80]DRAM Type = 3 (2:DDR2,3:DDR3) [83]DRAMC ZQ ...
端口与引脚端口(Port)是单片机内部(CPU单元)和外部IO的接口组 ,以PA端口为例,PA是PortA的 android gpio获取多个引脚 引脚 上拉 寄存器 LCD屏参数及应用举例 1. LCD参数及原理 R G B 信号 PCLK(像素时钟),LCLK(HSYNC,线时钟,水平同步时钟),FCLK(VSYNC,帧时钟,垂直同步时钟) 7寸屏一般由两种工作模式DE和...
root@imx6ulevk:~# /unit_tests/memtool IOMUXC.SW_MUX_CTL_PAD_CSI_DATA01SOC: i.MX6ULIOMUXC Addr:0x20e0000 IOMUXC.SW_MUX_CTL_PAD_CSI_DATA01 Addr:0x020E01E8 Value:0x00000005 - SW_MUX_CTL Register IOMUXC.SW_MUX_CTL_PAD_CSI_DATA01.MUX_MODE(0..3) :0x5 Select 1 of 9 iomux mod...
root@imx6ulevk:~# /unit_tests/memtool IOMUXC.SW_MUX_CTL_PAD_CSI_DATA01SOC: i.MX6ULIOMUXC Addr:0x20e0000 IOMUXC.SW_MUX_CTL_PAD_CSI_DATA01 Addr:0x020E01E8 Value:0x00000005 - SW_MUX_CTL Register IOMUXC.SW_MUX_CTL_PAD_CSI_DATA01.MUX_MODE(0..3) :0x5 Select 1 of 9 iomux mod...
{ pinctrl-names ="默认"、"睡眠"; pinctrl-0 =<&wlan_pins_default &ddr3_VTT_tog_default &unused_pins &debugtrl_pins>;pinctr-1 =<&wlan_pins_sleep>; ddr3_vtpad_default:0x372_dle_d_d_dul_0_m0_mu_puls|输出 = 0xt_mu_mu_mu_dtru_0_mode_puls|<wlan_d_mode_pule_pul...
Memory: Onboard DDR3L 1600 4GB RAMStorage: 1 x mSATA SSD, 1 x 2.5 Inch SATA SSD/HDDNetwork Card: 2 x Intel I210/I211 1000M LANWiFi: 802.11ac 2.4 and 5GhzBluetooth: 4.0/4.2Expansion: 1 x Mini PCIE slot for WiFi/3G/4G moduleI/0 Port: Power ON/OFF, 4 x USB2.0, 4 x COM ...
Memory: Onboard DDR3L 1600 4GB RAMStorage: 1 x mSATA SSD, 1 x 2.5 Inch SATA SSD/HDDNetwork Card: 2 x Intel I210/I211 1000M LANWiFi: 802.11ac 2.4 and 5GhzBluetooth: 4.0/4.2Expansion: 1 x Mini PCIE slot for WiFi/3G/4G moduleI/0 Port: Power ON/OFF, 4 x USB2.0, 4 x COM ...