1 /*
2 * @brief LPCXPresso LPC1549 Sysinit file
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2014
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 "board.h"
33 #include "string.h"
34
35 /* The System initialization code is called prior to the application and
36 initializes the board for run-time operation. Board initialization
37 includes clock setup and default pin muxing configuration. */
38
39 /*****************************************************************************
40 * Private types/enumerations/variables
41 ****************************************************************************/
42
43 /* IOCON setup table, only items that need changing from their default pin
44 state are in this table. */
45 STATIC const PINMUX_GRP_T ioconSetup[] = {
46 /* LEDs */
47 {0, 25, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_25-BREAK_CTRL-RED (low enable) */
48 {0, 3, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_3-SCT1_OUT4-GRN */
49 {1, 1, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_1-BREAK_STS1-BLUE */
50
51 /* QEI, motor controler, I2C, CAN */
52 {0, 2, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_2-QEI-SCT0_IN */
53 {0, 30, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_30-QEI-SCT0_IN */
54 {0, 17, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_17-QEI-SCT0_IN */
55 {0, 25, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_25-BREAK_CTRL-RED */
56 {1, 1, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_1-BREAK_STS1-BLUE */
57 {0, 23, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_23-I2C_SDA */
58 {0, 22, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_22-I2C_SCL */
59 {0, 11, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_11-CAN_RD */
60 {0, 31, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_31-CAN_TD */
61
62 /* ADC */
63 {1, 3, (IOCON_MODE_INACT)}, /* PIO1_3-ADC1_5 */
64 {0, 4, (IOCON_MODE_INACT)}, /* PIO0_4-ADC0_4 */
65 {0, 5, (IOCON_MODE_INACT)}, /* PIO0_5-ADC0_3 */
66 {0, 7, (IOCON_MODE_INACT)}, /* PIO0_7-ADC0_1 */
67 {0, 8, (IOCON_MODE_INACT)}, /* PIO0_8-ADC0_0 */
68 {0, 9, (IOCON_MODE_INACT)}, /* PIO0_9-ADC1_1 */
69 {0, 10, (IOCON_MODE_INACT)}, /* PIO0_10-ADC1_2 */
70
71 /* Joystick */
72 {1, 4, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_4-JOY_U */
73 {1, 5, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_5-JOY_C */
74 {1, 6, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_6-JOY_D */
75 {1, 7, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_7-JOY_R */
76 {1, 8, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_8-JOY_L */
77
78 /* UART */
79 {0, 13, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_13-ISP_RX */
80 {0, 18, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_18-ISP_TX */
81 {0, 11, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)},
82 {0, 31, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)},
83
84 /* USB related */
85 {1, 11, (IOCON_MODE_PULLDOWN | IOCON_DIGMODE_EN)}, /* PIO1_11-ISP_1 (VBUS) */
86 };
87
88 /* SWIM pin assignment definitions for pin assignment/muxing */
89 typedef struct {
90 uint16_t assignedpin : 9; /* Function and mode */
91 uint16_t port : 2; /* Pin port */
92 uint16_t pin : 5; /* Pin number */
93 } SWM_GRP_T;
94
95 /* Pin muxing table, only items that need changing from their default pin
96 state are in this table. */
97 STATIC const SWM_GRP_T swmSetup[] = {
98 /* USB related */
99 {(uint16_t) SWM_USB_VBUS_I, 1, 11}, /* PIO1_11-ISP_1-AIN_CTRL */
100
101 /* UART */
102 {(uint16_t) SWM_UART0_RXD_I, 0, 13}, /* PIO0_13-ISP_RX */
103 {(uint16_t) SWM_UART0_TXD_O, 0, 18}, /* PIO0_18-ISP_TX */
104 };
105
106 /* Setup fixed pin functions (GPIOs are fixed) */
107 /* No fixed pins except GPIOs */
108 #define PINENABLE0_VAL 0xFFFFFFFF
109
110 /* No fixed pins except GPIOs */
111 #define PINENABLE1_VAL 0x00FFFFFF
112
113 /*****************************************************************************
114 * Public types/enumerations/variables
115 ****************************************************************************/
116
117 /*****************************************************************************
118 * Private functions
119 ****************************************************************************/
120
121 /*****************************************************************************
122 * Public functions
123 ****************************************************************************/
124
125 /* Sets up system pin muxing */
Board_SetupMuxing(void)126 void Board_SetupMuxing(void)
127 {
128 int i;
129
130 /* Enable SWM and IOCON clocks */
131 Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON);
132 Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
133 Chip_SYSCTL_PeriphReset(RESET_IOCON);
134
135 /* IOCON setup */
136 Chip_IOCON_SetPinMuxing(LPC_IOCON, ioconSetup, sizeof(ioconSetup) / sizeof(PINMUX_GRP_T));
137
138 /* SWM assignable pin setup */
139 for (i = 0; i < (sizeof(swmSetup) / sizeof(SWM_GRP_T)); i++) {
140 Chip_SWM_MovablePortPinAssign((CHIP_SWM_PIN_MOVABLE_T) swmSetup[i].assignedpin,
141 swmSetup[i].port, swmSetup[i].pin);
142 }
143
144 /* SWM fixed pin setup */
145 // LPC_SWM->PINENABLE[0] = PINENABLE0_VAL;
146 // LPC_SWM->PINENABLE[1] = PINENABLE1_VAL;
147
148 /* Note SWM and IOCON clocks are left on */
149 }
150
151 /* Set up and initialize clocking prior to call to main */
Board_SetupClocking(void)152 void Board_SetupClocking(void)
153 {
154 Chip_SetupXtalClocking();
155
156 /* Set USB PLL input to main oscillator */
157 Chip_Clock_SetUSBPLLSource(SYSCTL_PLLCLKSRC_MAINOSC);
158 /* Setup USB PLL (FCLKIN = 12MHz) * 4 = 48MHz
159 MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2)
160 FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz
161 FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */
162 Chip_Clock_SetupUSBPLL(3, 1);
163
164 /* Powerup USB PLL */
165 Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPLL_PD);
166
167 /* Wait for PLL to lock */
168 while (!Chip_Clock_IsUSBPLLLocked()) {}
169
170 /* Set default system tick divder to 1 */
171 Chip_Clock_SetSysTickClockDiv(1);
172 }
173
174 /* Set up and initialize hardware prior to call to main */
Board_SystemInit(void)175 void Board_SystemInit(void)
176 {
177 /* Setup system clocking and muxing */
178 Board_SetupMuxing();
179 Board_SetupClocking();
180
181 /* Set SYSTICKDIV to 1 so CMSIS Systick functions work */
182 LPC_SYSCTL->SYSTICKCLKDIV = 1;
183 }
184