184 lines
7.3 KiB
C
184 lines
7.3 KiB
C
/*
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* @brief LPCXPresso LPC1549 Sysinit file
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*
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* @note
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* Copyright(C) NXP Semiconductors, 2014
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* All rights reserved.
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*
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* @par
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* LPC products. This software is supplied "AS IS" without any warranties of
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* any kind, and NXP Semiconductors and its licensor disclaim any and
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* all warranties, express or implied, including all implied warranties of
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* merchantability, fitness for a particular purpose and non-infringement of
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* intellectual property rights. NXP Semiconductors assumes no responsibility
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* or liability for the use of the software, conveys no license or rights under any
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* patent, copyright, mask work right, or any other intellectual property rights in
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* or to any products. NXP Semiconductors reserves the right to make changes
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* in the software without notification. NXP Semiconductors also makes no
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* representation or warranty that such application will be suitable for the
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* specified use without further testing or modification.
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*
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* @par
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors' and its
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* licensor's relevant copyrights in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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*/
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#include "board.h"
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#include "string.h"
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/* The System initialization code is called prior to the application and
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initializes the board for run-time operation. Board initialization
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includes clock setup and default pin muxing configuration. */
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/*****************************************************************************
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* Private types/enumerations/variables
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****************************************************************************/
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/* IOCON setup table, only items that need changing from their default pin
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state are in this table. */
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STATIC const PINMUX_GRP_T ioconSetup[] = {
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/* LEDs */
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{0, 25, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_25-BREAK_CTRL-RED (low enable) */
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{0, 3, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_3-SCT1_OUT4-GRN */
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{1, 1, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_1-BREAK_STS1-BLUE */
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/* QEI, motor controler, I2C, CAN */
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{0, 2, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_2-QEI-SCT0_IN */
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{0, 30, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_30-QEI-SCT0_IN */
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{0, 17, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_17-QEI-SCT0_IN */
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{0, 25, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_25-BREAK_CTRL-RED */
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{1, 1, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_1-BREAK_STS1-BLUE */
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{0, 23, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_23-I2C_SDA */
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{0, 22, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_22-I2C_SCL */
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{0, 11, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_11-CAN_RD */
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{0, 31, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_31-CAN_TD */
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/* ADC */
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{1, 3, (IOCON_MODE_INACT)}, /* PIO1_3-ADC1_5 */
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{0, 4, (IOCON_MODE_INACT)}, /* PIO0_4-ADC0_4 */
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{0, 5, (IOCON_MODE_INACT)}, /* PIO0_5-ADC0_3 */
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{0, 7, (IOCON_MODE_INACT)}, /* PIO0_7-ADC0_1 */
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{0, 8, (IOCON_MODE_INACT)}, /* PIO0_8-ADC0_0 */
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{0, 9, (IOCON_MODE_INACT)}, /* PIO0_9-ADC1_1 */
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{0, 10, (IOCON_MODE_INACT)}, /* PIO0_10-ADC1_2 */
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/* Joystick */
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{1, 4, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_4-JOY_U */
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{1, 5, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_5-JOY_C */
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{1, 6, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_6-JOY_D */
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{1, 7, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_7-JOY_R */
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{1, 8, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO1_8-JOY_L */
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/* UART */
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{0, 13, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_13-ISP_RX */
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{0, 18, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, /* PIO0_18-ISP_TX */
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{0, 11, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)},
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{0, 31, (IOCON_MODE_INACT | IOCON_DIGMODE_EN)},
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/* USB related */
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{1, 11, (IOCON_MODE_PULLDOWN | IOCON_DIGMODE_EN)}, /* PIO1_11-ISP_1 (VBUS) */
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};
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/* SWIM pin assignment definitions for pin assignment/muxing */
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typedef struct {
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uint16_t assignedpin : 9; /* Function and mode */
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uint16_t port : 2; /* Pin port */
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uint16_t pin : 5; /* Pin number */
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} SWM_GRP_T;
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/* Pin muxing table, only items that need changing from their default pin
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state are in this table. */
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STATIC const SWM_GRP_T swmSetup[] = {
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/* USB related */
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{(uint16_t) SWM_USB_VBUS_I, 1, 11}, /* PIO1_11-ISP_1-AIN_CTRL */
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/* UART */
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{(uint16_t) SWM_UART0_RXD_I, 0, 13}, /* PIO0_13-ISP_RX */
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{(uint16_t) SWM_UART0_TXD_O, 0, 18}, /* PIO0_18-ISP_TX */
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};
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/* Setup fixed pin functions (GPIOs are fixed) */
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/* No fixed pins except GPIOs */
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#define PINENABLE0_VAL 0xFFFFFFFF
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/* No fixed pins except GPIOs */
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#define PINENABLE1_VAL 0x00FFFFFF
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/*****************************************************************************
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* Public types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Private functions
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****************************************************************************/
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/*****************************************************************************
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* Public functions
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****************************************************************************/
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/* Sets up system pin muxing */
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void Board_SetupMuxing(void)
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{
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int i;
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/* Enable SWM and IOCON clocks */
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Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON);
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Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
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Chip_SYSCTL_PeriphReset(RESET_IOCON);
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/* IOCON setup */
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Chip_IOCON_SetPinMuxing(LPC_IOCON, ioconSetup, sizeof(ioconSetup) / sizeof(PINMUX_GRP_T));
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/* SWM assignable pin setup */
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for (i = 0; i < (sizeof(swmSetup) / sizeof(SWM_GRP_T)); i++) {
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Chip_SWM_MovablePortPinAssign((CHIP_SWM_PIN_MOVABLE_T) swmSetup[i].assignedpin,
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swmSetup[i].port, swmSetup[i].pin);
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}
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/* SWM fixed pin setup */
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// LPC_SWM->PINENABLE[0] = PINENABLE0_VAL;
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// LPC_SWM->PINENABLE[1] = PINENABLE1_VAL;
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/* Note SWM and IOCON clocks are left on */
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}
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/* Set up and initialize clocking prior to call to main */
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void Board_SetupClocking(void)
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{
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Chip_SetupXtalClocking();
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/* Set USB PLL input to main oscillator */
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Chip_Clock_SetUSBPLLSource(SYSCTL_PLLCLKSRC_MAINOSC);
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/* Setup USB PLL (FCLKIN = 12MHz) * 4 = 48MHz
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MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2)
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FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz
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FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */
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Chip_Clock_SetupUSBPLL(3, 1);
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/* Powerup USB PLL */
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Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPLL_PD);
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/* Wait for PLL to lock */
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while (!Chip_Clock_IsUSBPLLLocked()) {}
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/* Set default system tick divder to 1 */
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Chip_Clock_SetSysTickClockDiv(1);
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}
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/* Set up and initialize hardware prior to call to main */
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void Board_SystemInit(void)
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{
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/* Setup system clocking and muxing */
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Board_SetupMuxing();
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Board_SetupClocking();
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/* Set SYSTICKDIV to 1 so CMSIS Systick functions work */
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LPC_SYSCTL->SYSTICKCLKDIV = 1;
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}
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