bendns' repos / ArduinoStuff
arduino stuffs
Diffstat (limited to 'libraries/Firmata/utility/BluefruitLE_SPI_Stream.h')
-rw-r--r--libraries/Firmata/utility/BluefruitLE_SPI_Stream.h157
1 files changed, 157 insertions, 0 deletions
diff --git a/libraries/Firmata/utility/BluefruitLE_SPI_Stream.h b/libraries/Firmata/utility/BluefruitLE_SPI_Stream.h
new file mode 100644
index 0000000..372e5aa
--- /dev/null
+++ b/libraries/Firmata/utility/BluefruitLE_SPI_Stream.h
@@ -0,0 +1,157 @@
+/*
+ BluefruitLE_SPI_Stream.h
+
+ Documentation for the various AT commands used below is available at
+ https://learn.adafruit.com/adafruit-feather-m0-bluefruit-le/at-commands
+ */
+
+#ifndef _BLUEFRUIT_LE_SPI_STREAM_H_
+#define _BLUEFRUIT_LE_SPI_STREAM_H_
+
+#include <Adafruit_BluefruitLE_SPI.h>
+
+
+class BluefruitLE_SPI_Stream : public Stream
+{
+ public:
+ BluefruitLE_SPI_Stream(int8_t csPin, int8_t irqPin, int8_t rstPin);
+
+ void setLocalName(const char *localName);
+ void setConnectionInterval(unsigned short minConnInterval, unsigned short maxConnInterval);
+ void setFlushInterval(int flushInterval);
+
+ void begin();
+ bool poll();
+ void end();
+
+ // Print overrides
+ size_t write(uint8_t byte);
+ using Print::write; // Expose other write variants
+
+ // Stream overrides
+ int available();
+ int read();
+ int peek();
+ void flush();
+
+ private:
+ Adafruit_BluefruitLE_SPI ble;
+
+ String localName;
+ unsigned short minConnInterval;
+ unsigned short maxConnInterval;
+
+ uint8_t txBuffer[SDEP_MAX_PACKETSIZE];
+ size_t txCount;
+};
+
+
+BluefruitLE_SPI_Stream::BluefruitLE_SPI_Stream(int8_t csPin, int8_t irqPin, int8_t rstPin) :
+ ble(csPin, irqPin, rstPin),
+ minConnInterval(0),
+ maxConnInterval(0),
+ txCount(0)
+{ }
+
+void BluefruitLE_SPI_Stream::setLocalName(const char *localName)
+{
+ this->localName = localName;
+}
+
+void BluefruitLE_SPI_Stream::setConnectionInterval(unsigned short minConnInterval, unsigned short maxConnInterval)
+{
+ this->minConnInterval = minConnInterval;
+ this->maxConnInterval = maxConnInterval;
+}
+
+void BluefruitLE_SPI_Stream::setFlushInterval(int flushInterval)
+{
+ // Not used
+}
+
+void BluefruitLE_SPI_Stream::begin()
+{
+ // Initialize the SPI interface
+ ble.begin();
+
+ // Perform a factory reset to make sure everything is in a known state
+ ble.factoryReset();
+
+ // Disable command echo from Bluefruit
+ ble.echo(false);
+
+ // Change the MODE LED to indicate BLE UART activity
+ ble.println("AT+HWMODELED=BLEUART");
+
+ // Set local name
+ if (localName.length() > 0) {
+ ble.print("AT+GAPDEVNAME=");
+ ble.println(localName);
+ }
+
+ // Set connection interval
+ if (minConnInterval > 0 && maxConnInterval > 0) {
+ ble.print("AT+GAPINTERVALS=");
+ ble.print(minConnInterval);
+ ble.print(",");
+ ble.print(maxConnInterval);
+ ble.println(",,,");
+ }
+
+ // Disable real and simulated mode switch (i.e. "+++") command
+ ble.println("AT+MODESWITCHEN=local,0");
+ ble.enableModeSwitchCommand(false);
+
+ // Switch to data mode
+ ble.setMode(BLUEFRUIT_MODE_DATA);
+}
+
+bool BluefruitLE_SPI_Stream::poll()
+{
+ // If there's outgoing data in the buffer, just send it. The firmware on
+ // the nRF51822 will decide when to transmit the data in its TX FIFO.
+ if (txCount) flush();
+
+ // In order to check for a connection, we would need to switch from data to
+ // command mode and back again. However, due to the internal workings of
+ // Adafruit_BluefruitLE_SPI, this can lead to unread incoming data being
+ // lost. Therefore, we always return true.
+ return true;
+}
+
+void BluefruitLE_SPI_Stream::end()
+{
+ flush();
+ ble.end();
+}
+
+size_t BluefruitLE_SPI_Stream::write(uint8_t byte)
+{
+ txBuffer[txCount++] = byte;
+ if (txCount == sizeof(txBuffer)) flush();
+ return 1;
+}
+
+int BluefruitLE_SPI_Stream::available()
+{
+ return ble.available();
+}
+
+int BluefruitLE_SPI_Stream::read()
+{
+ return ble.read();
+}
+
+int BluefruitLE_SPI_Stream::peek()
+{
+ return ble.peek();
+}
+
+void BluefruitLE_SPI_Stream::flush()
+{
+ ble.write(txBuffer, txCount);
+ txCount = 0;
+}
+
+
+#endif // _BLUEFRUIT_LE_SPI_STREAM_H_