/*
* @brief NXP LPCXpresso LPC812 board file
*
* @note
* Copyright(C) NXP Semiconductors, 2013
* 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 "retarget.h"
/*****************************************************************************
* Private types/enumerations/variables
****************************************************************************/
#define LEDSAVAIL 3
static const uint8_t ledBits[LEDSAVAIL] = {7, 17, 16};
/*****************************************************************************
* Public types/enumerations/variables
****************************************************************************/
/* System oscillator rate and clock rate on the CLKIN pin */
const uint32_t OscRateIn = 12000000;
const uint32_t ExtRateIn = 0;
/*****************************************************************************
* Private functions
****************************************************************************/
/* Initialize the LEDs on the NXP LPC812 LPCXpresso Board */
static void Board_LED_Init(void)
{
int i;
for (i = 0; i < LEDSAVAIL; i++) {
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 0, ledBits[i]);
Chip_GPIO_SetPinState(LPC_GPIO_PORT, 0, ledBits[i], true);
}
}
/* Board Debug UART Initialisation function */
STATIC void Board_UART_Init(void)
{
/* Enable the clock to the Switch Matrix */
Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM);
/* Divided by 1 */
Chip_Clock_SetUARTClockDiv(1);
/* Connect the U0_TXD_O and U0_RXD_I signals to port pins(P0.4, P0.0) */
Chip_SWM_DisableFixedPin(SWM_FIXED_ACMP_I1);
Chip_SWM_MovablePinAssign(SWM_U0_TXD_O, 4);
Chip_SWM_MovablePinAssign(SWM_U0_RXD_I, 0);
/* Disable the clock to the Switch Matrix to save power */
Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM);
}
/*****************************************************************************
* Public functions
****************************************************************************/
/* Set the LED to the state of "On" */
void Board_LED_Set(uint8_t LEDNumber, bool On)
{
if (LEDNumber < LEDSAVAIL) {
Chip_GPIO_SetPinState(LPC_GPIO_PORT, 0, ledBits[LEDNumber], (bool) !On);
}
}
/* Return the state of LEDNumber */
bool Board_LED_Test(uint8_t LEDNumber)
{
bool state = false;
if (LEDNumber < LEDSAVAIL) {
state = (bool) !Chip_GPIO_GetPinState(LPC_GPIO_PORT, 0, ledBits[LEDNumber]);
}
return state;
}
/* Toggles the current state of a board LED */
void Board_LED_Toggle(uint8_t LEDNumber)
{
if (LEDNumber < LEDSAVAIL) {
Chip_GPIO_SetPinToggle(LPC_GPIO_PORT, 0, ledBits[LEDNumber]);
}
}
/* Sends a character on the UART */
void Board_UARTPutChar(char ch)
{
#if defined(DEBUG_UART)
Chip_UART_SendBlocking(DEBUG_UART, &ch, 1);
#endif
}
/* Gets a character from the UART, returns EOF if no character is ready */
int Board_UARTGetChar(void)
{
#if defined(DEBUG_UART)
uint8_t data;
if (Chip_UART_Read(DEBUG_UART, &data, 1) == 1) {
return (int) data;
}
#endif
return EOF;
}
/* Outputs a string on the debug UART */
void Board_UARTPutSTR(const char *str)
{
#if defined(DEBUG_UART)
while (*str != '\0') {
Board_UARTPutChar(*str++);
}
#endif
}
/* Initialize debug output via UART for board */
void Board_Debug_Init(void)
{
#if defined(DEBUG_UART)
Board_UART_Init();
Chip_UART_Init(DEBUG_UART);
Chip_UART_ConfigData(DEBUG_UART, UART_CFG_DATALEN_8 | UART_CFG_PARITY_NONE | UART_CFG_STOPLEN_1);
Chip_Clock_SetUSARTNBaseClockRate((115200 * 16), true);
Chip_UART_SetBaud(DEBUG_UART, 115200);
Chip_UART_Enable(DEBUG_UART);
Chip_UART_TXEnable(DEBUG_UART);
#endif
}
/* Set up and initialize all required blocks and functions related to the
board hardware */
void Board_Init(void)
{
/* Sets up DEBUG UART */
DEBUGINIT();
/* Initialize GPIO */
Chip_GPIO_Init(LPC_GPIO_PORT);
/* Initialize the LEDs */
Board_LED_Init();
}