Unverified Commit d4b6bef1 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

msp430fr5969: add UART input on eUSCI_A1

parent 2c26e370

include/arch/msp430fr5969lp/driver/stdin1.h

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/*

 * Copyright 2020 Birte Kristina Friesel

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#ifndef STANDARDINPUT1_H

#define STANDARDINPUT1_H



class StandardInput1 {

	private:

		StandardInput1(const StandardInput1 &copy);

		static unsigned char const bufsize = 32;

		char buffer[bufsize];

		volatile unsigned char write_pos;

		unsigned char read_pos;



	public:

		StandardInput1() : write_pos(0), read_pos(0) {}

		void setup();

		bool hasKey();

		char getKey();



		inline void addKey(char key) {

			buffer[write_pos++] = key;

			write_pos %= bufsize;

		}

};



extern StandardInput1 kin1;



#endif

src/arch/msp430fr5969lp/Kconfig

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@@ -39,6 +39,13 @@ help 
  RX: P2.1 (eUSCI_A0 / UCA0RXD)

select meta_driver_stdin



config arch_msp430fr5969lp_driver_stdin1

bool "UART Input on eUSCI_A1 / P2.6"

help

  RX: P2.6 (eUSCI_A1 / UCA1RXD)

depends on arch_msp430fr5969lp_driver_stdout1

select meta_driver_stdin1



config arch_msp430fr5969lp_driver_timer

bool "Timer with Interrupts"

select meta_driver_timer

src/arch/msp430fr5969lp/Makefile.inc

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@@ -87,6 +87,10 @@ ifdef CONFIG_arch_msp430fr5969lp_driver_stdin 
	CXX_TARGETS += src/arch/msp430fr5969lp/driver/stdin.cc

endif



ifdef CONFIG_arch_msp430fr5969lp_driver_stdin1

	CXX_TARGETS += src/arch/msp430fr5969lp/driver/stdin1.cc

endif



ifdef CONFIG_arch_msp430fr5969lp_driver_i2c

	CXX_TARGETS += src/arch/msp430fr5969lp/driver/i2c.cc

	COMMON_FLAGS += -DDRIVER_I2C

src/arch/msp430fr5969lp/driver/stdin1.cc

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/*

 * Copyright 2020 Birte Kristina Friesel

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include "driver/stdin1.h"

#include <msp430.h>



void StandardInput1::setup()

{

	UCA1CTLW0 |= UCSWRST;

	P2SEL0 &= ~BIT6;

	P2SEL1 |= BIT6;

	UCA1CTLW0 &= ~UCSWRST;

	UCA1IE |= UCRXIE;

}



bool StandardInput1::hasKey()

{

	if (write_pos != read_pos) {

		return true;

	}

	return false;

}



char StandardInput1::getKey()

{

	char ret = buffer[read_pos++];

	read_pos %= bufsize;

	return ret;

}



StandardInput1 kin1;



__attribute__((interrupt(USCI_A1_VECTOR))) __attribute__((wakeup)) void handle_stdin1()

{

	if (UCA1IFG & UCRXIFG) {

		kin1.addKey(UCA1RXBUF);

	}

}