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5d123cbb22
Also adapt the defines to the documentation - CPUs define up to 4 power modes (from zero, the lowest power mode, to PM_NUM_MODES-1, the highest) - >> there is an implicit extra idle mode (which has the number PM_NUM_MODES) << Previously on saml21 this would always generate pm_set(3) which is an illegal state. Now pm_layered will correctly generate pm_set(2) for IDLE modes. Idle power consumption dropped from 750µA to 368µA and wake-up from standby is also possible. (Before it would just enter STANDBY again as the mode register was never written with the illegal value.)
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/*
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* Copyright (C) 2019 ML!PA Consulting GmbH
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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 cpu_samd5x
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* @brief CPU specific definitions for internal peripheral handling
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* @{
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*
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* @file
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* @brief CPU specific definitions for internal peripheral handling
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*
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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*/
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#ifndef PERIPH_CPU_H
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#define PERIPH_CPU_H
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#include <limits.h>
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#include "periph_cpu_common.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 DFLL runs at at fixed frequency of 48 MHz
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*/
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#define SAM0_DFLL_FREQ_HZ (48000000U)
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/**
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* @brief DPLL must run with at least 96 MHz
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*/
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#define SAM0_DPLL_FREQ_MIN_HZ (96000000U)
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/**
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* @brief DPLL frequency must not exceed 200 MHz
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*/
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#define SAM0_DPLL_FREQ_MAX_HZ (200000000U)
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/**
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* @name Power mode configuration
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* @{
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*/
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#define PM_NUM_MODES (3)
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/** @} */
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/**
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* @name SAMD5x GCLK definitions
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* @{
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*/
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enum {
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SAM0_GCLK_MAIN = 0, /**< 120 MHz main clock */
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SAM0_GCLK_32KHZ, /**< 32 kHz clock */
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SAM0_GCLK_8MHZ, /**< 8 MHz clock for xTimer */
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SAM0_GCLK_48MHZ, /**< 48 MHz DFLL clock */
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};
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/** @} */
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/**
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* @brief Override SPI hardware chip select macro
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*
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* As of now, we do not support HW CS, so we always set it to a fixed value
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*/
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#define SPI_HWCS(x) (UINT_MAX - 1)
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#ifdef __cplusplus
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}
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#endif
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#endif /* PERIPH_CPU_H */
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/** @} */
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