board_nxp_xpresso_1769.c

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/*
 * @brief NXP LPC1769 Xpresso board file
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#include "board.h"
#include "string.h"

#include "lpc_phy_smsc87x0.c"
#include "retarget.c"

/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/
#define BUTTONS_BUTTON1_GPIO_PORT_NUM           2
#define BUTTONS_BUTTON1_GPIO_BIT_NUM            10
#define JOYSTICK_UP_GPIO_PORT_NUM               2
#define JOYSTICK_UP_GPIO_BIT_NUM                3
#define JOYSTICK_DOWN_GPIO_PORT_NUM             0
#define JOYSTICK_DOWN_GPIO_BIT_NUM              15
#define JOYSTICK_LEFT_GPIO_PORT_NUM             2
#define JOYSTICK_LEFT_GPIO_BIT_NUM              4
#define JOYSTICK_RIGHT_GPIO_PORT_NUM            0
#define JOYSTICK_RIGHT_GPIO_BIT_NUM             16
#define JOYSTICK_PRESS_GPIO_PORT_NUM            0
#define JOYSTICK_PRESS_GPIO_BIT_NUM             17
#define LED0_GPIO_PORT_NUM                      0
#define LED0_GPIO_BIT_NUM                       22

/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/

uint32_t SystemCoreClock;

/*****************************************************************************
 * Private functions
 ****************************************************************************/

/* Initializes board LED(s) */
static void Board_LED_Init(void)
{
 /* Pin PIO0_22 is configured as GPIO pin during SystemInit */
 /* Set the PIO_22 as output */
 Chip_GPIO_WriteDirBit(LPC_GPIO, LED0_GPIO_PORT_NUM, LED0_GPIO_BIT_NUM, true);
}

/*****************************************************************************
 * Public functions
 ****************************************************************************/

/* Update system core clock rate, should be called if the system has
   a clock rate change */
void SystemCoreClockUpdate(void)
{
 /* CPU core speed */
 SystemCoreClock = Chip_Clock_GetSystemClockRate();
}

/* Initialize UART pins */
void Board_UART_Init(LPC_USART_T *pUART)
{
 /* Pin Muxing has already been done during SystemInit */
}

/* Initialize debug output via UART for board */
void Board_Debug_Init(void)
{
#if defined(DEBUG_ENABLE)
 Board_UART_Init(DEBUG_UART);

 /* Setup UART for 115.2K8N1 */
 Chip_UART_Init(DEBUG_UART);
 Chip_UART_SetBaud(DEBUG_UART, 115200);
 Chip_UART_ConfigData(DEBUG_UART, UART_DATABIT_8, UART_PARITY_NONE, UART_STOPBIT_1);

 /* Enable UART Transmit */
 Chip_UART_TxCmd(DEBUG_UART, ENABLE);
#endif
}

/* Sends a character on the UART */
void Board_UARTPutChar(char ch)
{
#if defined(DEBUG_ENABLE)
 while (Chip_UART_SendByte(DEBUG_UART, (uint8_t) ch) == ERROR) {}
#endif
}

/* Gets a character from the UART, returns EOF if no character is ready */
int Board_UARTGetChar(void)
{
#if defined(DEBUG_ENABLE)
 uint8_t data;

 if (Chip_UART_ReceiveByte(DEBUG_UART, &data) == SUCCESS) {
  return (int) data;
 }
#endif
 return EOF;
}

/* Outputs a string on the debug UART */
void Board_UARTPutSTR(char *str)
{
#if defined(DEBUG_ENABLE)
 while (*str != '\0') {
  Board_UARTPutChar(*str++);
 }
#endif
}

/* Sets the state of a board LED to on or off */
void Board_LED_Set(uint8_t LEDNumber, bool On)
{
 /* There is only one LED */
 if (LEDNumber == 0) {
  Chip_GPIO_WritePortBit(LPC_GPIO, LED0_GPIO_PORT_NUM, LED0_GPIO_BIT_NUM, On);
 }
}

/* Returns the current state of a board LED */
bool Board_LED_Test(uint8_t LEDNumber)
{
 return Chip_GPIO_ReadPortBit(LPC_GPIO, LED0_GPIO_PORT_NUM, LED0_GPIO_BIT_NUM);
}

/* Set up and initialize all required blocks and functions related to the
   board hardware */
void Board_Init(void)
{
 /* Sets up DEBUG UART */
 DEBUGINIT();

 /* Updates SystemCoreClock global var with current clock speed */
 SystemCoreClockUpdate();

 /* Initializes GPIO */
 Chip_GPIO_Init(LPC_GPIO);
 Chip_IOCON_Init(LPC_IOCON);

 /* Initialize LEDs */
 Board_LED_Init();
}

/* Returns the MAC address assigned to this board */
void Board_ENET_GetMacADDR(uint8_t *mcaddr)
{
 const uint8_t boardmac[] = {0x00, 0x60, 0x37, 0x12, 0x34, 0x56};

 memcpy(mcaddr, boardmac, 6);
}

/* Initialize pin muxing for SSP interface */
void Board_SSP_Init(LPC_SSP_T *pSSP)
{
 if (pSSP == LPC_SSP1) {
  /* Set up clock and muxing for SSP1 interface */
  /*
   * Initialize SSP0 pins connect
   * P0.7: SCK
   * P0.6: SSEL
   * P0.8: MISO
   * P0.9: MOSI
   */
  Chip_IOCON_PinMux(LPC_IOCON, 0, 7, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 6, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 8, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 9, IOCON_MODE_INACT, IOCON_FUNC2);
 }
 else {
  /* Set up clock and muxing for SSP0 interface */
  /*
   * Initialize SSP0 pins connect
   * P0.15: SCK
   * P0.16: SSEL
   * P0.17: MISO
   * P0.18: MOSI
   */
  Chip_IOCON_PinMux(LPC_IOCON, 0, 15, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 16, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 17, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 18, IOCON_MODE_INACT, IOCON_FUNC2);
 }
}

/* Initialize pin muxing for SPI interface */
void Board_SPI_Init(bool isMaster)
{
 /* Set up clock and muxing for SSP0 interface */
 /*
  * Initialize SSP0 pins connect
  * P0.15: SCK
  * P0.16: SSEL
  * P0.17: MISO
  * P0.18: MOSI
  */
 Chip_IOCON_PinMux(LPC_IOCON, 0, 15, IOCON_MODE_PULLDOWN, IOCON_FUNC3);
 if (isMaster) {
  Chip_IOCON_PinMux(LPC_IOCON, 0, 16, IOCON_MODE_PULLUP, IOCON_FUNC0);
  Chip_GPIO_WriteDirBit(LPC_GPIO, 0, 16, true);
  Board_SPI_DeassertSSEL();

 }
 else {
  Chip_IOCON_PinMux(LPC_IOCON, 0, 16, IOCON_MODE_PULLUP, IOCON_FUNC3);
 }
 Chip_IOCON_PinMux(LPC_IOCON, 0, 17, IOCON_MODE_INACT, IOCON_FUNC3);
 Chip_IOCON_PinMux(LPC_IOCON, 0, 18, IOCON_MODE_INACT, IOCON_FUNC3);
}

/* Assert SSEL pin */
void Board_SPI_AssertSSEL(void)
{
 Chip_GPIO_WritePortBit(LPC_GPIO, 0, 16, false);
}

/* De-Assert SSEL pin */
void Board_SPI_DeassertSSEL(void)
{
 Chip_GPIO_WritePortBit(LPC_GPIO, 0, 16, true);
}

void Board_Audio_Init(uint8_t audio_in_sel)
{}

/* Sets up board specific I2C interface */
void Board_I2C_Init(I2C_ID_T id)
{
 switch (id) {
 case I2C0:
  Chip_IOCON_PinMux(LPC_IOCON, 0, 27, IOCON_MODE_INACT, IOCON_FUNC1);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 28, IOCON_MODE_INACT, IOCON_FUNC1);
  Chip_IOCON_SetI2CPad(LPC_IOCON, I2CPADCFG_STD_MODE);
  break;

 case I2C1:
  Chip_IOCON_PinMux(LPC_IOCON, 0, 19, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 20, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_EnableOD(LPC_IOCON, 0, 19);
  Chip_IOCON_EnableOD(LPC_IOCON, 0, 20);
  break;

 case I2C2:
  Chip_IOCON_PinMux(LPC_IOCON, 0, 10, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_PinMux(LPC_IOCON, 0, 11, IOCON_MODE_INACT, IOCON_FUNC2);
  Chip_IOCON_EnableOD(LPC_IOCON, 0, 10);
  Chip_IOCON_EnableOD(LPC_IOCON, 0, 11);
  break;
 }
}

void Board_Buttons_Init(void)
{
 Chip_GPIO_WriteDirBit(LPC_GPIO, BUTTONS_BUTTON1_GPIO_PORT_NUM, BUTTONS_BUTTON1_GPIO_BIT_NUM, false);
}

uint32_t Buttons_GetStatus(void)
{
 uint8_t ret = NO_BUTTON_PRESSED;
 if (Chip_GPIO_ReadPortBit(LPC_GPIO, BUTTONS_BUTTON1_GPIO_PORT_NUM, BUTTONS_BUTTON1_GPIO_BIT_NUM) == 0x00) {
  ret |= BUTTONS_BUTTON1;
 }
 return ret;
}

void Board_Joystick_Init(void)
{
 Chip_IOCON_PinMux(LPC_IOCON, JOYSTICK_UP_GPIO_PORT_NUM, JOYSTICK_UP_GPIO_BIT_NUM, IOCON_MODE_INACT, IOCON_FUNC0);
 Chip_IOCON_PinMux(LPC_IOCON, JOYSTICK_DOWN_GPIO_PORT_NUM, JOYSTICK_DOWN_GPIO_BIT_NUM, IOCON_MODE_INACT, IOCON_FUNC0);
 Chip_IOCON_PinMux(LPC_IOCON, JOYSTICK_LEFT_GPIO_PORT_NUM, JOYSTICK_LEFT_GPIO_BIT_NUM, IOCON_MODE_INACT, IOCON_FUNC0);
 Chip_IOCON_PinMux(LPC_IOCON,
       JOYSTICK_RIGHT_GPIO_PORT_NUM,
       JOYSTICK_RIGHT_GPIO_BIT_NUM,
       IOCON_MODE_INACT,
       IOCON_FUNC0);
 Chip_IOCON_PinMux(LPC_IOCON,
       JOYSTICK_PRESS_GPIO_PORT_NUM,
       JOYSTICK_PRESS_GPIO_BIT_NUM,
       IOCON_MODE_INACT,
       IOCON_FUNC0);
 Chip_GPIO_WriteDirBit(LPC_GPIO, JOYSTICK_UP_GPIO_PORT_NUM, JOYSTICK_UP_GPIO_BIT_NUM, false);  /* input */
 Chip_GPIO_WriteDirBit(LPC_GPIO, JOYSTICK_DOWN_GPIO_PORT_NUM, JOYSTICK_DOWN_GPIO_BIT_NUM, false); /* input */
 Chip_GPIO_WriteDirBit(LPC_GPIO, JOYSTICK_LEFT_GPIO_PORT_NUM, JOYSTICK_LEFT_GPIO_BIT_NUM, false); /* input */
 Chip_GPIO_WriteDirBit(LPC_GPIO, JOYSTICK_RIGHT_GPIO_PORT_NUM, JOYSTICK_RIGHT_GPIO_BIT_NUM, false); /* input */
 Chip_GPIO_WriteDirBit(LPC_GPIO, JOYSTICK_PRESS_GPIO_PORT_NUM, JOYSTICK_PRESS_GPIO_BIT_NUM, false); /* input */
}

uint8_t Joystick_GetStatus(void)
{
 uint8_t ret = NO_BUTTON_PRESSED;
 if ((Chip_GPIO_ReadPortBit(LPC_GPIO, JOYSTICK_UP_GPIO_PORT_NUM, JOYSTICK_UP_GPIO_BIT_NUM)) == 0x00) {
  ret |= JOY_UP;
 }
 else if (Chip_GPIO_ReadPortBit(LPC_GPIO, JOYSTICK_DOWN_GPIO_PORT_NUM, JOYSTICK_DOWN_GPIO_BIT_NUM) == 0x00) {
  ret |= JOY_DOWN;
 }
 else if ((Chip_GPIO_ReadPortBit(LPC_GPIO, JOYSTICK_LEFT_GPIO_PORT_NUM, JOYSTICK_LEFT_GPIO_BIT_NUM)) == 0x00) {
  ret |= JOY_LEFT;
 }
 else if (Chip_GPIO_ReadPortBit(LPC_GPIO, JOYSTICK_RIGHT_GPIO_PORT_NUM, JOYSTICK_RIGHT_GPIO_BIT_NUM) == 0x00) {
  ret |= JOY_RIGHT;
 }
 else if ((Chip_GPIO_ReadPortBit(LPC_GPIO, JOYSTICK_PRESS_GPIO_PORT_NUM, JOYSTICK_PRESS_GPIO_BIT_NUM)) == 0x00) {
  ret |= JOY_PRESS;
 }
 return ret;
}

void Serial_CreateStream(void *Stream)
{}