99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
#include "pxt.h"
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enum SerialPin {
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C16 = MICROBIT_ID_IO_P2,
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C17 = MICROBIT_ID_IO_P8,
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P0 = MICROBIT_ID_IO_P12,
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P1 = MICROBIT_ID_IO_P0,
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P2 = MICROBIT_ID_IO_P1,
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P3 = MICROBIT_ID_IO_P16,
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};
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enum BaudRate {
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//% block=115200
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BaudRate115200 = 115200,
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//% block=9600
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BaudRate9600 = 9600
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};
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enum Delimiters {
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//% block="new line"
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NewLine = 1,
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//% block=","
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Comma = 2,
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//% block="$"
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Dollar = 3,
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//% block=":"
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Colon = 4,
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//% block="."
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Fullstop = 5,
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//% block="#"
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Hash = 6,
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};
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//% weight=2 color=30
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//% advanced=true
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namespace serial {
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// note that at least one // followed by % is needed per declaration!
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/**
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* Reads a line of text from the serial port and returns the buffer when the delimiter is met.
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* @param delimiter text delimiter that separates each text chunk
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*/
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//% help=serial/read-until
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//% blockId=serial_read_until block="serial|read until %delimiter=serial_delimiter_conv"
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//% weight=19
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StringData* readUntil(StringData* delimiter) {
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return uBit.serial.readUntil(ManagedString(delimiter)).leakData();
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}
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/**
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* Reads the buffered received data as a string
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*/
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//% blockId=serial_read_buffer block="serial|read string"
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//% weight=18
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StringData* readString() {
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int n = uBit.serial.getRxBufferSize();
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if (n == 0) return ManagedString("").leakData();
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return ManagedString(uBit.serial.read(n, MicroBitSerialMode::ASYNC)).leakData();
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}
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/**
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* Registers an event to be fired when one of the delimiter is matched.
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* @param delimiters the characters to match received characters against.
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*/
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//% help=serial/on-data-received
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//% weight=18 blockId=serial_on_data_received block="serial|on data received %delimiters=serial_delimiter_conv"
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void onDataReceived(StringData* delimiters, Action body) {
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uBit.serial.eventOn(ManagedString(delimiters));
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registerWithDal(MICROBIT_ID_SERIAL, MICROBIT_SERIAL_EVT_DELIM_MATCH, body);
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// lazy initialization of serial buffers
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uBit.serial.read(MicroBitSerialMode::ASYNC);
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}
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/**
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* Sends a piece of text through Serial connection.
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*/
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//% help=serial/write-string
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//% weight=87
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//% blockId=serial_writestring block="serial|write string %text"
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void writeString(StringData *text) {
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uBit.serial.send(ManagedString(text));
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}
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/**
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* Dynamically configuring the serial instance to use pins other than USBTX and USBRX.
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* @param tx the new transmission pins
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* @param rx the new reception pin
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* @param baud the new baud rate. eg: 115200
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*/
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//% weight=10
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//% help=serial/redirect-to
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//% blockId=serial_redirect block="serial|redirect to|TX %tx|RX %rx|at baud rate %rate"
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//% blockExternalInputs=1
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void redirect(SerialPin tx, SerialPin rx, BaudRate rate) {
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uBit.serial.redirect((PinName)tx, (PinName)rx);
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uBit.serial.baud((int)rate);
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}
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}
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