037c9ea0a4
Summary The naming standard at https://cwiki.apache.org/confluence/display/NUTTX/Naming+FAQ requires that all MCU-private files begin with the name of the architecture, not up_. This PR addresses only these name changes for the up_*.h files. There are only three, but almost 1680 files that include them: up_arch.h up_internal.h up_vfork.h The only change to the files is from including up_arch.h to arm_arch.h (for example). The entire job required to be compatible with that Naming Convention will also require changing the naming of the up_() functions that are used only within arch/arm and board/arm. Impact There should be not impact of this change (other that one step toward more consistent naming). Testing stm32f4discovery:netnsh
159 lines
6.0 KiB
C
159 lines
6.0 KiB
C
/****************************************************************************
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* arch/arm/src/armv7-m/arm_itm.c
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*
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* Copyright (c) 2009 - 2013 ARM LIMITED
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*
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Copyright (C) 2014 Pierre-noel Bouteville . All rights reserved.
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Authors: Pierre-noel Bouteville <pnb990@gmail.com>
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* Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include "arm_arch.h"
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#include "itm.h"
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: itm_sendchar
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*
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* Description:
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* The function transmits a character via the ITM channel 0, and
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* - Just returns when no debugger is connected that has booked the output.
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* - Is blocking when a debugger is connected, but the previous character
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* sent has not been transmitted.
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*
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* Input Parameters:
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* ch - Character to transmit.
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*
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* Returned Value:
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* Character to transmit.
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*
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****************************************************************************/
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uint32_t itm_sendchar(uint32_t ch)
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{
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if ((getreg32(ITM_TCR) & ITM_TCR_ITMENA_MASK) && /* ITM enabled */
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(getreg32(ITM_TER) & (1UL << 0))) /* ITM Port #0 enabled */
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{
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while (getreg32(ITM_PORT(0)) == 0);
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putreg8((uint8_t)ch, ITM_PORT(0));
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}
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return ch;
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}
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/****************************************************************************
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* Name: itm_receivechar
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*
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* Description:
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*
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* Input Parameters:
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* The function inputs a character via the external variable g_itm_rxbuffer.
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*
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* Returned Value:
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* Received character or -1 No character pending.
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*
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****************************************************************************/
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int32_t itm_receivechar(void)
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{
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int32_t ch = -1; /* Assume no character available */
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if (g_itm_rxbuffer != ITM_RXBUFFER_EMPTY)
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{
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ch = g_itm_rxbuffer;
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g_itm_rxbuffer = ITM_RXBUFFER_EMPTY; /* Ready for next character */
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}
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return ch;
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}
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/****************************************************************************
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* Name: itm_checkchar
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*
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* Description:
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*
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* Input Parameters:
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* The function checks whether a character is pending for reading in the
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* variable g_itm_rxbuffer.
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*
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* Returned Value:
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* 0 No character available.
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* 1 Character available.
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*
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****************************************************************************/
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int32_t itm_checkchar (void)
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{
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return (g_itm_rxbuffer != ITM_RXBUFFER_EMPTY);
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}
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