adafruit gpio

　　The GPIO pin has two modes board and BCM.1.GPIO output Control LED：　　Code:　　　　(1) Using board mode, GPIO.setmode(GPIO.BOARD) . Pin 35th is GPIO19 under BCM.(2) Set pin 35 to output mode,GPIO.setup(35,GPIO.OUT)(3) on the GPIO35 pin output high level, can also be Gpio.high2.GPIO interface for input signal：　　Circuit diagram　　When the switch is off, the GPIO23 is t

Although the em3 of efm32 has a low power consumption of 0.6ua, it is still a waste in some occasions. In particular, the one-time consumption of battery power supply products, the customer's idea is that the lower the better, it is better not to consume power. Therefore, in many cases, the MCU can only enter the em4 status. When efm32 enters the em4 status, almost all modules in the chip are powered off. Only a few special gpio ports and external r

Each gpio port has two 32-bit configuration registers (Gpiox_crl, gpiox_crh)Control the High and Low eight bits of each port respectivelyIf the IO port is 0-7, write the CRL register. If the IO port is 8-15, write the CRH register, two 32-bit data registers (Gpiox_idr, gpiox_odr)One is the read-only input data register, and the other is the write-only output register., A 32-bit/Reset register (Gpiox_bsrr), A 16-bit reset register (Gpiox_brr) And a 32-

First aid! For details about how to compile the makefile of the gpio driver-Linux general technology-Linux technology and application information, see the following. I need to use the GPIO interface to control the stepper motor. The gpio driver code adds the pin control I need according to the \ drivers \ char \ EmbedSky_gpio.c code under the source code of the k

according to Datasheet Documentation described, when when the Jtag_gpio_mode register is set to 1 , theJTAG pin function is gpio, and the corresponding Gpio sequence number is gpio17~gpio21. Setting the JTAG interface to GPIO requires modifying the jtag_gpio_mode of the Gpiomode register Bits,thegpiomode Register is located in the SYSCTL Register Group, as descr

For CC2530 Gpio Basics, General Gpio operation about registers, IAR Embedded Workbench IDE software use: TI CC2530 Basic Experiment (ordinary GPIO operation-Light LED)Schematic diagram of the circuit:Analysis : You need to press the button to light the light, and do not use the interrupt mode, that is, we need to monitor whether the press is pressed (P0_4 is low,

1.GPIO IntroductionGPIO (General purpose I/O ports) means universal input/output port, which is popularly said to be some pins.We can use them to output high or low levels or the state of the read-in PIN.There are 130 I/O ports in the s3c2440, divided into 9 groups A~j, GPA, GPB 、..... GPJ2.GPIO RegistersSince the gpio is to be manipulated, the corresponding regi

That said, if the Convention are supported on their platform, drivers shouldUse it when possible. Platforms must declare GENERIC_GPIO support in theirKconfig (Boolean True), and provide an Work without standard GPIO calls should has Kconfig entries which dependOn Generic_gpio. The GPIO calls is available, either as "real code" or asOptimized-away stubs, when drivers use the Include file:#include Identifying

1.GPIO IntroductionGPIO (General purpose I/O ports) means universal input/output port, which is popularly said to be some pins.We can use them to output high or low levels or the state of the read-in PIN.There are 130 I/O ports in the s3c2440, divided into 9 groups A~j, GPA, GPB 、..... GPJ2.GPIO RegistersSince the gpio is to be manipulated, the corresponding regi

Digital TV-DTV is no longer a new thing for us. On-board electronics, DTV mostly exists independently in the form of modules and is configurable. In the on-board market, the customer's needs are diverse. If DTV is used as the on-board navigation main PCB, it is still not flexible. If DTV is not used, it must be different PCB boards, this is not a good solution for after-sales maintenance and development. DTV is at home, and we usually operate through the remote control. Of course, some android T

The registers associated with the Stm32 Gpio are(1) Two x 32-bit configuration register (GPIOX_CRL,GPIOX_CRH)Each IO occupies 4 bits, 16 IO takes 64 bits and two 32 is the register.Where cnf[1:0] is used to configure the pattern, which is defined as followsMODE[1:0] is used to configure the input and output mode and the output mode of the port rate(2) Port input data register (GPIOX_IDR)The high 16 bits are reserved, and the lower 16 bits correspond t

Background: The hall sensor needs to be used to detect latch status, trigger interrupts, and send latch status information in the project. (The interruption service here is only the point of the LED lights to explain the situation)Hardware condition: Use PB3 pin, thus using middle wire break: Exti_line3 and Interrupt service function: EXTI2_3_IRQN.Specific process:1. Set Interrupt ClockRcc_apb2periphclockcmd (Rcc_apb2periph_syscfg, ENABLE);2. Configuring GpioGpio_inittypedef gpio_initstructure;R

In order to save IO Resources single-chip opportunity in one IO multiplexing a lot of functions, the general microcontroller with a function can be reused after two functions, which reflects the power of the STM32 Gpio, we use a remap method to map one of the peripherals to the other IO feet, This allows you to take full advantage of on-chip resources!The following code can be implemented JETG pin, used as a normal pin to use, simple 3 lines of code,

When using the STM32L function of a gpio, you need to configure the Register GPIOX_AFRL and GPIOX_AFRHSTM32F differs from stm32l hereToday to debug a PWM output program, how also out of the waveformIs missing the gpio_pinafconfig (GPIOA,GPIO_PINSOURCE7,GPIO_AF_TIM3); The focus is not on the waveform.void Pwm_init (){Tim_timebaseinittypedef tim_timebasestructure;Tim_ocinittypedef tim_ocinitstructure;Gpio_inittypedef gpio_initstructure;Rcc_apb1periphclo

In Linux or android systems, if we want to configure the gpio pin of the feisikar imx6 processor, for example, the gpio_19 pin, we should look like this: #define MX6Q_PAD_GPIO_19__GPIO_4_5\(_MX6Q_PAD_GPIO_19__GPIO_4_5 | MUX_PAD_CTRL(NO_PAD_CTRL)) _ Mx6q_pad_gpio_1920.gpio_4_5 is defined: #define _MX6Q_PAD_GPIO_19__GPIO_4_5\IOMUX_PAD(0x0624, 0x0254, 5, 0x0000, 0, 0) The iomux_pad macro is a key macro defining gp