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92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/*******************************************************************************
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* Copyright (c) 2014-2015 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Zurich Research Lab - initial API, implementation and documentation
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*******************************************************************************/
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#ifndef _hal_hpp_
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#define _hal_hpp_
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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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* initialize hardware (IO, SPI, TIMER, IRQ).
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*/
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void hal_init (void);
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/*
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* drive radio NSS pin (0=low, 1=high).
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*/
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void hal_pin_nss (u1_t val);
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/*
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* drive radio RX/TX pins (0=rx, 1=tx).
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*/
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void hal_pin_rxtx (u1_t val);
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/*
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* control radio RST pin (0=low, 1=high, 2=floating)
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*/
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void hal_pin_rst (u1_t val);
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/*
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* perform 8-bit SPI transaction with radio.
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* - write given byte 'outval'
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* - read byte and return value
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*/
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u1_t hal_spi (u1_t outval);
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/*
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* disable all CPU interrupts.
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* - might be invoked nested
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* - will be followed by matching call to hal_enableIRQs()
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*/
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void hal_disableIRQs (void);
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/*
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* enable CPU interrupts.
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*/
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void hal_enableIRQs (void);
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/*
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* put system and CPU in low-power mode, sleep until interrupt.
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*/
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void hal_sleep (void);
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/*
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* return 32-bit system time in ticks.
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*/
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u4_t hal_ticks (void);
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/*
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* busy-wait until specified timestamp (in ticks) is reached.
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*/
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void hal_waitUntil (u4_t time);
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/*
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* check and rewind timer for target time.
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* - return 1 if target time is close
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* - otherwise rewind timer for target time or full period and return 0
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*/
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u1_t hal_checkTimer (u4_t targettime);
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/*
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* perform fatal failure action.
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* - called by assertions
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* - action could be HALT or reboot
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*/
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void hal_failed (const char *file, u2_t line);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // _hal_hpp_
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