mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
ff7f8ae2f0
RIOT supports two distinct families of the MSP430: The [MSP430 x1xx]
MCU family and the [MSP430 F2xx/G2xx] MCU family. For both incompatible
MCU families the code was located in the msp430fxyz folder, resulting
in case of the UART driver in particularly bizarre code looking roughly
like this:
#ifndef UART_USE_USCI
/* implementation of x1xx peripheral ... */
#else
/* implementation of F2xx/G2xx peripheral ... */
#endif
/* zero shared code between both variants */
This splits the peripheral drivers for USCI and USART serial IP blocks
into separate files and relocates everything in cpu/msp430, similar to
how cpu/stm32 is organized.
[MSP430 x1xx]: https://www.ti.com/lit/ug/slau049f/slau049f.pdf
[MSP430 F2xx/G2xx]: https://www.ti.com/lit/ug/slau144k/slau144k.pdf
146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2005, Swedish Institute of Computer Science
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* Modified by Kaspar Schleiser
|
|
*/
|
|
|
|
/**
|
|
* @ingroup cpu
|
|
* @{
|
|
*
|
|
* @file
|
|
* @brief MSP430 CPU initialization
|
|
*
|
|
* @author Kaspar Schleiser <kaspar@schleiser.de>
|
|
* @author Oliver Hahm <oliver.hahm@inria.fr>
|
|
*
|
|
* @}
|
|
*/
|
|
|
|
#include "cpu.h"
|
|
#include "irq.h"
|
|
#include "periph/init.h"
|
|
#include "periph_cpu.h"
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
init_ports(void)
|
|
{
|
|
/* Turn everything off, device drivers enable what is needed. */
|
|
|
|
/* All configured for digital I/O */
|
|
#ifdef P1SEL
|
|
P1SEL = 0;
|
|
#endif
|
|
#ifdef P2SEL
|
|
P2SEL = 0;
|
|
#endif
|
|
#ifdef P3SEL
|
|
P3SEL = 0;
|
|
#endif
|
|
#ifdef P4SEL
|
|
P4SEL = 0;
|
|
#endif
|
|
#ifdef P5SEL
|
|
P5SEL = 0;
|
|
#endif
|
|
#ifdef P6SEL
|
|
P6SEL = 0;
|
|
#endif
|
|
|
|
/* All available inputs */
|
|
#ifdef P1DIR
|
|
P1DIR = 0;
|
|
P1OUT = 0;
|
|
#endif
|
|
#ifdef P2DIR
|
|
P2DIR = 0;
|
|
P2OUT = 0;
|
|
#endif
|
|
#ifdef P3DIR
|
|
P3DIR = 0;
|
|
P3OUT = 0;
|
|
#endif
|
|
#ifdef P4DIR
|
|
P4DIR = 0;
|
|
P4OUT = 0;
|
|
#endif
|
|
|
|
#ifdef P5DIR
|
|
P5DIR = 0;
|
|
P5OUT = 0;
|
|
#endif
|
|
|
|
#ifdef P6DIR
|
|
P6DIR = 0;
|
|
P6OUT = 0;
|
|
#endif
|
|
|
|
P1IE = 0;
|
|
P2IE = 0;
|
|
}
|
|
|
|
void msp430_cpu_init(void)
|
|
{
|
|
irq_disable();
|
|
init_ports();
|
|
clock_init();
|
|
irq_enable();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
#define asmv(arg) __asm__ __volatile__(arg)
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* Mask all interrupts that can be masked.
|
|
*/
|
|
int
|
|
splhigh_(void)
|
|
{
|
|
/* Clear the GIE (General Interrupt Enable) flag. */
|
|
int sr;
|
|
asmv("mov r2, %0" : "=r"(sr));
|
|
asmv("bic %0, r2" : : "i"(GIE));
|
|
asmv("nop");
|
|
return sr & GIE; /* Ignore other sr bits. */
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* Restore previous interrupt mask.
|
|
*/
|
|
void
|
|
splx_(int sr)
|
|
{
|
|
sr &= GIE;
|
|
/* If GIE was set, restore it. */
|
|
asmv("bis %0, r2" : : "r"(sr));
|
|
asmv("nop");
|
|
}
|
|
|
|
extern void board_init(void);
|