initial commit

io/UART.h

@@ -0,0 +1,60 @@
+#ifndef UART_H
+#define UART_H
+
+class UART {
+
+public:
+
+	/** setup */
+	void init(UartBautRate rate) {
+		uart_init(rate, rate);
+	}
+
+	/** how many chars are available for reading? */
+	uint8_t available() {
+		return (READ_PERI_REG(UART_STATUS(UART0)) >> UART_RXFIFO_CNT_S) & UART_RXFIFO_CNT;
+	}
+
+	/** number of bytes within the TX-FIFO */
+	uint8_t txFifoUsed() const {
+		return (( READ_PERI_REG(UART_STATUS(UART0))>>UART_TXFIFO_CNT_S)& UART_TXFIFO_CNT);
+	}
+
+	/** size of the TX FIFO */
+	uint8_t txFifoLen() const {
+		return 126;
+	}
+
+	/** is it possible to add something to the TX fifo? */
+	uint8_t txFifoFree() const {
+		return txFifoLen() - txFifoUsed();
+	}
+
+	/** fetch one char from the uart */
+	char readChar() const {
+		return READ_PERI_REG(UART_FIFO(UART0)) & 0xFF;
+	}
+
+	void writeChar(const char c) {
+		while(!txFifoFree()) {;}
+		WRITE_PERI_REG(UART_FIFO(UART0), c);
+	}
+
+
+//	void write(const char c) {
+//		uart_tx_one_char(UART0, c);
+//	}
+
+	/** write the given data to the uart */
+	void write(const void* data, const uint16_t len) {
+		for (uint16_t i = 0; i < len; ++i) {
+			writeChar( ((uint8_t*)data)[i] );
+			//uart_tx_one_char(UART0, ((uint8_t*)data)[i]);
+		}
+	}
+
+};
+
+extern UART uart;
+
+#endif // UART_H