- #Efm32 Usb Cdc Serial Port how to#
- #Efm32 Usb Cdc Serial Port driver#
- #Efm32 Usb Cdc Serial Port software#
- #Efm32 Usb Cdc Serial Port code#
- #Efm32 Usb Cdc Serial Port Pc#
BmRequestType bRequest wValue wIndex wLength Data 00100001b SET_LINE_CODING 0 interface size of structure line coding structure Table 2 defines the line coding properties. Set Line Coding This request allows the host to specify typical asynchronous line-character formatting properties. These class-specific requests are used for device and call management. SET_CONTROL_LINE_STATE 22h RS232 signalused to tell the DCE device the DTE device is now present. GET_LINE_CODING 21h Requests current DTE rate, stop-bits, parity, and number-of-character bits.
#Efm32 Usb Cdc Serial Port code#
Class Requests The class requests and class notifications supported are listed in Table 1.Ībstract Control Model Requests Request Code Description SET_LINE_CODING 20h Configures baud rate, stop-bits, parity, and numberof-character bits. The Abstract Control Model subclass of CDC and bridges the gap between legacy modem devices and USB devices, enabling the use of application programs designed for older modems. The CDC is used primarily for modems, but also for ISDN, fax machines, and telephony applications for performing regular voice calls. USB CDC Class The USB communications device class (CDC) is a composite USB device class, and the class may include more than one interface.
#Efm32 Usb Cdc Serial Port Pc#
#Efm32 Usb Cdc Serial Port driver#
Figure 1 USB CDC Virtual COM Port System This application note describes the USB communications device class driver (or USB CDC) in detail and includes an implementation example for the Silicon Labs EFM32 MCU.Īssumptions This document assumes the following:
#Efm32 Usb Cdc Serial Port software#
This allows developers to use legacy applications with new products using the same COM port interface as before, with few hardware and software modifications. A subset of the USB Communication DeviceClass (CDC) can be used to emulate a serial port providing a virtual COM port UART interface. This can be an issue for the developer who needs a COM port for communication between a peripheral and host PC.
As a result, many modern computers no longer support RS-232 serial COM ports, opting for the slimmer USB alternative. Introduction USB revolutionized the PC peripheral space by making a very simple plug-and-play interface for users. Implementing USB communication device class (CDC) on EFM32 MCUs 1. (USB CDC)¶ A virtual serial port which can be used for communications between a computer and the. Silicon Labs » Wiki » Silicon Labs Firmware. I want to communicate with the EFM32 MCU over a USB/CDC.
#Efm32 Usb Cdc Serial Port how to#
2 USBHID example program shows how to configure and.
2 USB HID (Human Interface Device) Example. You can use this serial port as an extra serial port or as a debug solution. The USBSerial interface is used to emulate a serial port over USB.