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scu_18xx_43xx.c
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1 /*
2  * @brief LPC18xx/43xx System Control Unit (SCU) control functions
3  *
4  * @note
5  * Copyright(C) NXP Semiconductors, 2012
6  * All rights reserved.
7  *
8  * @par
9  * Software that is described herein is for illustrative purposes only
10  * which provides customers with programming information regarding the
11  * LPC products. This software is supplied "AS IS" without any warranties of
12  * any kind, and NXP Semiconductors and its licensor disclaim any and
13  * all warranties, express or implied, including all implied warranties of
14  * merchantability, fitness for a particular purpose and non-infringement of
15  * intellectual property rights. NXP Semiconductors assumes no responsibility
16  * or liability for the use of the software, conveys no license or rights under any
17  * patent, copyright, mask work right, or any other intellectual property rights in
18  * or to any products. NXP Semiconductors reserves the right to make changes
19  * in the software without notification. NXP Semiconductors also makes no
20  * representation or warranty that such application will be suitable for the
21  * specified use without further testing or modification.
22  *
23  * @par
24  * Permission to use, copy, modify, and distribute this software and its
25  * documentation is hereby granted, under NXP Semiconductors' and its
26  * licensor's relevant copyrights in the software, without fee, provided that it
27  * is used in conjunction with NXP Semiconductors microcontrollers. This
28  * copyright, permission, and disclaimer notice must appear in all copies of
29  * this code.
30  */
31 
32 #include "scu_18xx_43xx.h"
33 
34 /*****************************************************************************
35  * Private types/enumerations/variables
36  ****************************************************************************/
37 
38 /*****************************************************************************
39  * Public types/enumerations/variables
40  ****************************************************************************/
41 
42 /*****************************************************************************
43  * Private functions
44  ****************************************************************************/
45 
46 /*****************************************************************************
47  * Public functions
48  ****************************************************************************/
49 
50 /* Configure pin function */
51 void Chip_SCU_PinMux(uint8_t port, uint8_t pin, uint8_t mode, uint8_t func)
52 {
53  if (port == PINMUX_CLK) {
54  LPC_SCU_CLK(((uint32_t) LPC_SCU), pin) = mode + func;
55  }
56  else {
57  LPC_SCU->SFSP[port][pin] = mode + func;
58  }
59 }
60 
61 /* GPIO Interrupt Pin Select */
62 void Chip_SCU_GPIOIntPinSel(uint8_t PortSel, uint8_t PortNum, uint8_t PinNum)
63 {
64  uint8_t pinInt;
65  volatile uint32_t pinSel;
66 
67  pinInt = ((PortNum & 0x7) << 5) | (PinNum & 0x1F);
68  if (PortSel < 4) {
69  pinSel = LPC_SCU->PINTSEL0;
70  pinSel &= ~(0xFF << (PortSel * 8));
71  pinSel |= (pinInt << (PortSel * 8));
72  LPC_SCU->PINTSEL0 = pinSel;
73  }
74  else {
75  pinSel = LPC_SCU->PINTSEL1;
76  pinSel &= ~(0xFF << ((PortSel - 4) * 8));
77  pinSel |= (pinInt << ((PortSel - 4) * 8));
78  LPC_SCU->PINTSEL1 = pinSel;
79  }
80 }