16550 uart

** Description:*------------* This file is intends for UART driver.** Author:*-------*-------** ===================================================== ============================================* History* Below this line, this part is controlled by PVCs VM. Do not modify !!*------------------------------------------------------------------------------* Removed!* Removed!* Removed!** Removed!* Removed!* Removed!** Removed!* Removed!* Removed!** Removed

a low-cost and inefficient solution, while the essence of the new HPS system is truly hard core; The new HPS has the following features: Using TSMC-28nm process flow, 1.1v core voltage. Built in dual-MHz ARMCortex-A9 hard core processor, supporting SMP; Each core processor has the following features: 32 KB L1 Instruction Cache and 32 KB L1 data cache YesSingle precision and Double Precision Floating Point operation unit of IEEE-754And 128-bit neon simp media Engine Coresighttm

driver and called by other OS modules. the device driver Service Provider Interface (ddsi) is a set of functions exposed by the PDD layer of a layered device driver and called by the MDD. classes of related device drivers can share the same DDI-for example, the DDI exposed by stream interface drivers is the set of Stream interface functions. all stream interface drivers expose those same functions, although certainly their implementations and behavior can be different from one stream interface

the installation is complete, set the environment variable. Running error: Importerror:/usr/lib/python2.7/lib-dynload/_ ctypes. x86_64-linux-gnu.so: Undefined Symbol: pyfloat_typeSolution: Install python2.7 $ Tar xvf Python-2.7.5.tar.gz $ CD Python-2.7.5 $./Configure-enable-shared-enable-unicode-ucs4 $ Make $ Sudo make install /Usr/local/Skyeye/bin #./SkyeyeSkyeye 1.3.5Skyeye is an open source project under GPL. All rights of different parts or modules are reserved by their author. Any modific

interruptspid hash table entries: 128 (Order: 7,512 bytes) dentry cache hash table entries: 4096 (Order: 2, 16384 bytes) inode-Cache hash table entries: 2048 (order: 1, 8192 bytes Physical pages: 1b00memory available: 4096 K romfs + 25760 K/31485 k ram (41 K init code, 1234 K kernel code, 79 K data, 1024 k dma) blackfin scratchpad data SRAM: 4 kbblackfin data_a SRAM: 16 kbblackfin data_ B SRAM: 16 kbblackfin instruction SRAM: 16 kbcalibrating delay loop (skipped )... 987.13 bogomips presetmount

Source: Huaqing vision embedded School, source: http://www.embedu.org/Column/Column698.htm Author: Instructor Cheng,Hua Qing vision embedded college lecturer. I. Data Communication Methods The basic data communication methods can be divided into parallel communication and serial communication. (1) Parallel Communication: multiple data lines are used to send data simultaneously. It features high transmission speed and is suitable for short-distance communication. (2) Serial Communication: one pi

1.uart port configuration:The UART log and meta configuration ports are configured as other ports, and the vacated uart1 are specifically used for this functional communication debugging. Note: Only the UART1 port on the hardware board is able to fly the line out to debug. Modification method: reference: [FAQ07420] How to set the UART port to spit

Two independent asynchronous serial I/O ports are provided for the UART unit of the high-efficiency FIFO serial port based on the implementation of b0x (clock frequency: 60 MHz) on the ARM7, each communication port can work in the interrupt or DMA mode. That is, UART can generate an internal interrupt request or DMA request to transmit data between the CPU and the serial I/O port. It supports a transmission

1. UART Communication Exception 1.1. PhenomenonFriday debugging CSR8670 encountered a serious problem: in the Xide environment debugging, CSR8670 received the data from the MCU will respond normally. Once running offline, the communication between CSR8670 and MCU is abnormal, which is as follows: The MCU sends an X-byte command to the Csr8670,uart task to receive a command that is less than X bytes

First, initialize 1. Initialize the serial port, clock Mx_usart1_uart_init (); Serial clock initialized to internal clock Periphclkinit.usart1clockselection = RCC_USART1CLKSOURCE_HSI; Periphclkinit.usart2clockselection = RCC_USART2CLKSOURCE_HSI; 2. Initializing DMA, Port multiplexing Hal_uart_mspinit () Open Idle Frame Interrupt __hal_uart_enable_it (Uarthandle, Uart_it_idle); Second, start receiving transmission 1. Start Data reception /*Start DMA Receive transfer*/voidMx_uart_debugrxstart (uar

Although a specific UART device driver can be designed with a TTY-driven design, which defines Tty_driver and implements Tty_operations member functions, Linux is already in the file Serial_ The universal TTY drive layer of the UART device, called the core layer of the serial port, is implemented in core.c, so that the main task of the UART driver becomes a set o

universal Asynchronous Receiver and transmitter (UART) provide three independent asynchronous serial I/O (SiO2) ports, each of which can be operated in either the interrupt mode or the DMA mode. In other words, UART can generate an interrupt or DMA request for data transmission between the CPU and UART. UART supports

Input/output Characters of serial port settingss5pv210 UART Related InstructionsA universal asynchronous transceiver called the UART, Universal asynchronous RECEIVER and transmitter, is used to transmit serial data. When the data is sent, the CPU writes the parallel data Uart,uart in a certain format on a wire; When th

interrupt.The timer does not have a separate timing function, so if it is timed, it can use the Pwm_out mode and timer interrupt toOn the TIMER0 pin of the chip, there will be a PWM waveform output.*ptimer0_config =0x0019;//Configure timer for PWM mode*ptimer0_period =0x00800000;//Set period is 0x00800000 system clock*ptimer0_width =0x00400000;//Set pulse width to 0x00400000 system clock*ptimer_enable =0x0001;//Enable TIMER0*PSIC_IAR0 =0xFFFFFFFF; *psic_iar1 =0xFFFFFFFF; *psic_iar2 =0xfffffff4;

/* It is my preference to select such a serial device. You can select a serial device in the range of ttyS [0 .. 63 */ 　　 　　 3. Set the serial port of the serial port device corresponding to the multi-user card 1. #/bin/setserial/dev/ttyS11 port 0x0190 irq 3 uart 16550A /* Set/dev/ttyS11i to the first serial port corresponding to the multi-user card. The following is the example */ /* If you do not have the setserial tool, install it. RH6.1 by defaul

specific application will be applied in the following program. With the struct above, we need to define a macro, which is similar to that of PIO. # DEFINE _ UART # ifdef _ UART # define UART (uart_str *) rs232_base) # endif I don't need to explain it. I have already explained it in the PIO section. It should be okay. Next, create a

need to use the test clip to clamp the chip pin, the disadvantage is that the FLASH chip with different PIN numbers needs to use the corresponding test clip. 16.2 router serial port The serial port of the router is very useful for developers. Generally, you can use the serial port to implement the following functions.CFE of the access router. Observe the boot and debugging information. Use a Shell to perform interactive asynchronous serial communication with the system. Therefore, these featur

Linux wireless network technology series II Bluetooth (1) By sreekrishnan venkateswaraPosting time: 2004.12.30     BlueZ 是官方 LinuxBluetooth 栈，由主机控制接口（Host Control Interface ，HCI）层、Bluetooth协议核心、逻辑链路控制和适配协议（Logical Link Control and Adaptation Protocol，L2CAP）、SCO 音频层、其他 Bluetooth 服务、用户空间后台进程以及配置工具组成（请参阅 参考资料）。     Bluetooth规范支持针对 Bluetooth HCI 数据分组的 UART（通用异步接收器/传送器）和 USB 传输机制。BlueZ栈对这两个传输机制（drivers/Bluetooth/）都支持。

By Sreekrishnan Venkateswaran Linux Bluetooth Bluetooth is a short-range wireless technology used to replace cables. It supports 723 kbps (asymmetric) and 432 kbps (symmetric) speeds to transmit data and voice. The transmission range of a Bluetooth device is about 10 meters (30 feet ). BlueZ is the official Linux Bluetooth Stack. It consists of the Host Control Interface (HCI) layer, Bluetooth Protocol core, Logical Link Control and Adaptation Protocol (L2CAP) SCO audio layer, other Bluetooth

/: Change Scan Response Data (SRP) dynamicallyHow to change the SRP data is a very imperative for most bluetooth low energy use case. but in official Texas Instruments (TI) example code, there is no demonstration for this purpose. in here, I note how to reach the goal.In the TI forum, it sai possible to update RSP data by disabling/enabling advertising. but for my feeble trying, the RSP do not be updated. so I use the "reboot" as my method.Before achieving the topic goal, I wocould like to refer