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The MSP430 timer prescaler can device the 16 MHz clock down to (16 / 2^x) MHz, with 0 <= x < 4. So no slower than 2 MHz. With the current ztimer config the clock would run at twice the speed.
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* Copyright (C) 2013, 2014 INRIA
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* 2015 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_olimex_msp430_h2618
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*
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* @{
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*
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* @file
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* @brief Basic definitions for the Olimex MSP430-H2618 board
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*
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* @author Marian Buschsieweke <marian.buschsieweke@posteo.net>
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*/
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#ifndef BOARD_H
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#define BOARD_H
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#include "cpu.h"
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#include "macros/units.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Define the CPU model for the <msp430.h>
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*/
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#ifndef __MSP430F2618__
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#define __MSP430F2618__
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#endif
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/**
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* @name ztimer configuration
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* @{
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*/
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#define CONFIG_ZTIMER_USEC_WIDTH 16 /**< running on a 16-bit timer */
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#define CONFIG_ZTIMER_USEC_BASE_FREQ MHZ(2) /**< Cannot divide 16 MHz clock
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to 1 MHz, go for 2 MHz instead */
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* BOARD_H */
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