mirror of https://github.com/ARMmbed/mbed-os.git
144 lines
7.0 KiB
C
144 lines
7.0 KiB
C
/**
|
|
******************************************************************************
|
|
* @file pad.c
|
|
* @brief PAD management support code
|
|
* @internal
|
|
* @author ON Semiconductor
|
|
* $Rev: 2848 $
|
|
* $Date: 2014-04-01 22:48:18 +0530 (Tue, 01 Apr 2014) $
|
|
******************************************************************************
|
|
* Copyright 2016 Semiconductor Components Industries LLC (d/b/a “ON Semiconductor”).
|
|
* All rights reserved. This software and/or documentation is licensed by ON Semiconductor
|
|
* under limited terms and conditions. The terms and conditions pertaining to the software
|
|
* and/or documentation are available at http://www.onsemi.com/site/pdf/ONSEMI_T&C.pdf
|
|
* (“ON Semiconductor Standard Terms and Conditions of Sale, Section 8 Software”) and
|
|
* if applicable the software license agreement. Do not use this software and/or
|
|
* documentation unless you have carefully read and you agree to the limited terms and
|
|
* conditions. By using this software and/or documentation, you agree to the limited
|
|
* terms and conditions.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
|
|
* OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
|
|
* ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL,
|
|
* INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
|
|
* @endinternal
|
|
*
|
|
* @ingroup pad
|
|
*
|
|
* @details
|
|
*/
|
|
|
|
/*************************************************************************************************
|
|
* *
|
|
* Header files *
|
|
* *
|
|
*************************************************************************************************/
|
|
|
|
#include "memory_map.h"
|
|
#include "pad_map.h"
|
|
#include "clock.h"
|
|
|
|
/*************************************************************************************************
|
|
* *
|
|
* Symbolic Constants *
|
|
* *
|
|
*************************************************************************************************/
|
|
#define PAD_CTRL_OP_DRIVE_STRENGTH_MASK (uint32_t)0x1C
|
|
#define PAD_NUM_OF_IO 17
|
|
#define PAD_OP_DRIVE_STRGTH_MAX 7
|
|
#define PAD_OP_DRIVE_TYPE_MAX 1
|
|
#define PAD_OP_PULL_TYPE_MAX 3
|
|
|
|
#define PAD_REG_ADRS_BYTE_SIZE 4
|
|
|
|
#define PAD_OP_DRIVE_STRGTH_BIT_POS 2
|
|
#define PAD_OP_DRIVE_TYPE_BIT_POS 5
|
|
#define PAD_OP_PULL_TYPE_BIT_POS 0
|
|
|
|
/*************************************************************************************************
|
|
* *
|
|
* Global variables *
|
|
* *
|
|
*************************************************************************************************/
|
|
|
|
/* Peripheral PAD register mutex */
|
|
/* sem_pt GlobMutexPadReg; */
|
|
|
|
/*************************************************************************************************
|
|
* *
|
|
* Functions *
|
|
* *
|
|
*************************************************************************************************/
|
|
|
|
/** Find description at pad.h */
|
|
void fPadInit()
|
|
{
|
|
/** - Enable the clock for PAD peripheral device */
|
|
CLOCK_ENABLE(CLOCK_PAD);
|
|
|
|
/** - Set pad parameters, output drive strength, pull piece control, output drive type */
|
|
PADREG->PADIO0.WORD = PAD_OUTPUT_PN_L1_OD; /* UART1 TXD */
|
|
PADREG->PADIO1.WORD = PAD_INPUT_PD_L1_PP; /* UART1 RXD */
|
|
PADREG->PADIO2.WORD = PAD_INPUT_PD_L1_PP; /* UART1 CTS */
|
|
PADREG->PADIO3.WORD = PAD_OUTPUT_PN_L1_OD; /* UART1 RTS */
|
|
PADREG->PADIO4.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO5.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO6.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO7.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO8.WORD = PAD_OUTPUT_PN_L1_OD; /* UART2 TXD */
|
|
PADREG->PADIO9.WORD = PAD_INPUT_PD_L1_PP; /* UART2 RXD */
|
|
PADREG->PADIO10.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO11.WORD = PAD_INPUT_PD_L1_PP; /* SWO */
|
|
PADREG->PADIO12.WORD = PAD_INPUT_PD_L1_PP; /* SWCLK */
|
|
PADREG->PADIO13.WORD = PAD_INPUT_PD_L1_PP; /* SWDIO */
|
|
PADREG->PADIO14.WORD = PAD_INPUT_PD_L1_PP;
|
|
PADREG->PADIO15.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO16.WORD = PAD_UNUSED_PD_L1_PP;
|
|
PADREG->PADIO17.WORD = PAD_UNUSED_PD_L1_PP;
|
|
|
|
/** - Disable the clock for PAD peripheral device */
|
|
CLOCK_DISABLE(CLOCK_PAD);
|
|
|
|
}
|
|
|
|
/** Find description at pad.h */
|
|
boolean fPadIOCtrl(uint8_t PadNum, uint8_t OutputDriveStrength, uint8_t OutputDriveType, uint8_t PullType)
|
|
{
|
|
PadReg_t *PadRegOffset;
|
|
/** \verbatim
|
|
Table: O/p drive strength
|
|
|
|
Drive strength 3.3V (min/typ/max) 1V (min/typ/max)
|
|
000 1/1.4/2.1 mA 0.043/0.07/0.11 mA
|
|
001 2/2.7/4.1 mA 0.086/0.15/0.215 mA
|
|
010 4.1/5.3/7.8 mA 0.188/0.3/0.4 mA
|
|
011 8.1/10.4/15 8 mA 0.4/0.6/0.81 mA
|
|
100 20.8/26/37 mA* 1/1.6/2.2 mA
|
|
101 40.5/50/70 mA* 2/3/4.3 mA
|
|
11x 57/73/102 mA* 3/4.6/6.2 mA
|
|
|
|
*Values are only accessible when CDBGPWRUPREQ is high. This limits the maximum output current in functional mode. \endverbatim */
|
|
|
|
|
|
if((PadNum <= PAD_NUM_OF_IO) &&
|
|
(OutputDriveStrength <= PAD_OP_DRIVE_STRGTH_MAX) &&
|
|
(OutputDriveType <= PAD_OP_DRIVE_TYPE_MAX) && (PullType <= PAD_OP_PULL_TYPE_MAX)) {
|
|
/** - Get PAD IO register address for the PAD number */
|
|
PadRegOffset = (PadReg_t*)(PADREG_BASE + (PadNum * PAD_REG_ADRS_BYTE_SIZE));
|
|
|
|
/** - Enable the clock for PAD peripheral device */
|
|
CLOCK_ENABLE(CLOCK_PAD);
|
|
|
|
/** - Set drive type, pulltype & drive strength */
|
|
PadRegOffset->PADIO0.WORD = (uint32_t)((PullType << PAD_OP_PULL_TYPE_BIT_POS) |
|
|
(OutputDriveStrength << PAD_OP_DRIVE_STRGTH_BIT_POS) |
|
|
(OutputDriveType << PAD_OP_DRIVE_TYPE_BIT_POS));
|
|
|
|
/** - Disable the clock for PAD peripheral device */
|
|
CLOCK_DISABLE(CLOCK_PAD);
|
|
return True;
|
|
}
|
|
/* Invalid parameter/s */
|
|
return False;
|
|
} |