#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