can open putty serial with prolific usb to serial comm port

PT_YIELD_TIME_msec(1) // may not be needed The following code could be included in the Protothreads functions to read the UART ( PT_GetSerialBuffer or PT_GetMachineBuffer). The PLIB description gives the incorrect function call.

You must clear this in software using UART2ClearAllErrors(). The UART will lock up if it receives a character with a framing error or overrun error. All other slave devices discard subsequent data bytes until a new address word is received.Ĭonnections for multiple devices might look like the following: The slave device that is specified by the address word receives and processes subsequent data bytes sent by the master device. All slave devices in the communication chain receive the address word and check the slave address value The data word contains the address of a slave device and is considered the address word. The master device transmits a data word with the 9th bit set. The protocol operates in the following sequence: If the 9th bit is cleared, the receiv ed data word is processed as data associated with the previous address/control byte. If the 9th bit is set, the data is processed as address or control information.

A common scheme is to use a 9th data bit to identify whether a data byte is address or data information. In addition to the standard 8-bit mode, there is a 9-bit address mode that allows several devices to share TTL-level UART signals. A typical multi-processor communication protoc ol differentiates between data bytes and address/control bytes.

To connect two PIC32s, cross-wire TX and RX as shown below. The incoming waveform is sampled three times/bit for error detection. The UART receive block diagram shows a small FIFO and a de-serializer. The UART transmit block diagram shows that there is a small FIFO buffer and a serializer. The UART supports TTL-level RS232, considered a legacy interface, but simple and useful. It is even possible to use it in an address mode to communicate across several PIC32s. You can use it between two PIC32 processors, or from a PIC32 to a PC using a UART-USB COM port adaptor. The UART is used for comunication of serial data.

Can open putty serial with prolific usb to serial comm port