mbed-os/targets/TARGET_ONSEMI/TARGET_NCS36510/Pad.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;
}