📄 bsp.c
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/*
*********************************************************************************************************
* MICRIUM BOARD SUPPORT SUPPORT
*
* (c) Copyright 2003-2006; Micrium, Inc.; Weston, FL
*
* All rights reserved. Protected by international copyright laws.
* Knowledge of the source code may NOT be used to develop a similar product.
* Please help us continue to provide the Embedded community with the finest
* software available. Your honesty is greatly appreciated.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
*
* BOARD SUPPORT PACKAGE
*
* NXP LPC2468
* on the
* Embedded Artists LPC2468 OEM Board
*
* Filename : bsp.c
* Version : V1.00
* Programmer(s) : Brian Nagel
*********************************************************************************************************
*/
#define BSP_GLOBALS
#include <includes.h>
/*
*********************************************************************************************************
* #DEFINE CONSTANTS
*********************************************************************************************************
*/
/* ---------------------- GPIO0 Pins ---------------------- */
#define GPIO0_CANRD1 DEF_BIT_00 /* CAN Transceiver */
#define GPIO0_CANTD1 DEF_BIT_01 /* CAN Transceiver */
#define GPIO0_TXD0 DEF_BIT_02 /* UART #0: Over Serial Bridge */
#define GPIO0_RXD0 DEF_BIT_03 /* UART #0: Over Serial Bridge */
#define GPIO0_CANRD2 DEF_BIT_05 /* CAN Transceiver */
#define GPIO0_LCD_CS_SEL DEF_BIT_06 /* LCD (Can be selected) */
#define GPIO0_CANTD2 DEF_BIT_07 /* CAN Transceiver */
#define GPIO0_LCD_RS_SEL DEF_BIT_07 /* LCD (Can be selected) */
#define GPIO0_LCD_WE_SEL DEF_BIT_08 /* LCD (Can be selected) */
#define GPIO0_USBB_PORT_PWR DEF_BIT_12 /* USB Channel B */
#define GPIO0_USBB_LED DEF_BIT_13 /* USB Channel B */
#define GPIO0_USBB_HOST_DEV_EN DEF_BIT_14 /* USB Channel B */
#define GPIO0_LCD_SCK DEF_BIT_15 /* LCD (Can be selected for serial interface) */
#define GPIO0_LCD_MISO DEF_BIT_17 /* LCD (Can be selected for serial interface) */
#define GPIO0_LCD_MOSI DEF_BIT_18 /* LCD (Can be selected for serial interface) */
#define GPIO0_PHY_PRWDN_SEL DEF_BIT_20
#define GPIO0_LCD_RSTOUT_SEL DEF_BIT_21 /* LCD (Can be selected) */
#define GPIO0_MCIDAT0_SEL DEF_BIT_22 /* SD/MMC (Because of silicon errata) */
#define GPIO0_AD00 DEF_BIT_23
#define GPIO0_AD01 DEF_BIT_24
#define GPIO0_PBLED_SDA0 DEF_BIT_27 /* PCA9532 */
#define GPIO0_PBLED_SCL0 DEF_BIT_28 /* PCA9532 */
#define GPIO0_USBA_DP DEF_BIT_29
#define GPIO0_USBA_DM DEF_BIT_30
#define GPIO0_USBB_DP DEF_BIT_31
/* ---------------------- GPIO1 Pins ---------------------- */
#define GPIO1_E_TXD0 DEF_BIT_00
#define GPIO1_E_TXD1 DEF_BIT_01
#define GPIO1_MCICLK DEF_BIT_02 /* SD/MMC */
#define GPIO1_MCICMD DEF_BIT_03 /* SD/MMC */
#define GPIO1_E_TX_EN DEF_BIT_04
#define GPIO1_MCIPWR DEF_BIT_05 /* SD/MMC */
#define GPIO1_MCIDAT0 DEF_BIT_06 /* SD/MMC (Cannot be used due to errata) */
#define GPIO1_MCIDAT1 DEF_BIT_07 /* SD/MMC */
#define GPIO1_E_CRS0 DEF_BIT_08
#define GPIO1_E_RXD0 DEF_BIT_09
#define GPIO1_E_RXD1 DEF_BIT_10
#define GPIO1_MCIDAT2 DEF_BIT_11 /* SD/MMC */
#define GPIO1_MCIDAT3 DEF_BIT_12 /* SD/MMC */
#define GPIO1_E_RX_ER DEF_BIT_14
#define GPIO1_E_RX_CLK DEF_BIT_15
#define GPIO1_E_MDC DEF_BIT_16
#define GPIO1_E_MDIO DEF_BIT_17
#define GPIO1_USBA_LED DEF_BIT_18 /* USB Channel A (OTG) */
#define GPIO1_USBA_SDA DEF_BIT_27
#define GPIO1_USBA_SCL DEF_BIT_28
#define GPIO1_USBA_INT DEF_BIT_29
#define GPIO1_USBB_PWR_VBUS DEF_BIT_30 /* USB Channel B */
#define GPIO1_USBB_OVERCRNT DEF_BIT_31 /* USB Channel B */
/* ---------------------- GPIO2 Pins ---------------------- */
#define GPIO2_ETM ((CPU_INT32U)(0x000000FF))
#define GPIO2_EINT0 DEF_BIT_10
#define GPIO2_PHY_INT_SEL DEF_BIT_11 /* PHY Interrupt output */
#define GPIO2_NAND_BUSY_SEL DEF_BIT_12
#define GPIO2_CS2 DEF_BIT_14 /* DBUS_EN */
#define GPIO2_RAS DEF_BIT_16
#define GPIO2_CAS DEF_BIT_17
#define GPIO2_CLKOUT0 DEF_BIT_18
#define GPIO2_CLKOUT1 DEF_BIT_19
#define GPIO2_DYCS0 DEF_BIT_20
#define GPIO2_DYCS1 DEF_BIT_21 /* DBUS_EN */
#define GPIO2_CKE0 DEF_BIT_24
#define GPIO2_CKE1 DEF_BIT_25
#define GPIO2_DQM0 DEF_BIT_28
#define GPIO2_DQM1 DEF_BIT_29
/* ---------------------- GPIO4 Pins ---------------------- */
#define GPIO3_LCD_D ((CPU_INT32U)(0x0000FFFF)) /* LCD Data Bus */
#define GPIO3_TXD1 DEF_BIT_16 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_RXD1 DEF_BIT_17 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_CTS1 DEF_BIT_18 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_DCD1 DEF_BIT_19 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_DSR1 DEF_BIT_20 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_DTR1 DEF_BIT_21 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_RI1 DEF_BIT_22 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
#define GPIO3_LCD_LIGHT DEF_BIT_28 /* LCD Backlight */
#define GPIO3_RTS1 DEF_BIT_30 /* UART #1: RS232 Full Modem or WLAN Add-On Module */
/* ---------------------- GPIO4 Pins ---------------------- */
#define GPIO4_LCD_A ((CPU_INT32U)(0x00FFFFFF)) /* LCD address bus */
#define GPIO4_LCD_OE DEF_BIT_24 /* LCD RD_E Input */
#define GPIO4_LCD_WE DEF_BIT_25 /* LCD WR_RW Input */
#define GPIO4_BLS0 DEF_BIT_26
#define GPIO4_BLS1 DEF_BIT_27
#define GPIO4_CS0 DEF_BIT_30
#define GPIO4_CS1 DEF_BIT_31
/*
*********************************************************************************************************
* DATA TYPES
*********************************************************************************************************
*/
typedef void (*BSP_FNCT_PTR)(void); /* Pointer to ISR handler function */
/*
*********************************************************************************************************
* VARIABLES
*********************************************************************************************************
*/
CPU_INT32U VIC_SpuriousInt;
/*
*********************************************************************************************************
* PROTOTYPES
*********************************************************************************************************
*/
static void PLL_Init (void);
static void MAM_Init (void);
static void GPIO_Init (void);
static void VIC_Init (void);
static void DCC_Init (void);
static void Tmr_TickInit (void);
static void VIC_Dummy (void); /* Prototypes for dummy interrupt handlers */
static void VIC_DummyWDT (void);
static void VIC_DummySW (void);
static void VIC_DummyDEBUGRX (void);
static void VIC_DummyDEBUGTX (void);
static void VIC_DummyTIMER0 (void);
static void VIC_DummyTIMER1 (void);
static void VIC_DummyUART0 (void);
static void VIC_DummyUART1 (void);
static void VIC_DummyPWM01 (void);
static void VIC_DummyI2C0 (void);
static void VIC_DummySPI (void);
static void VIC_DummySSP1 (void);
static void VIC_DummyPLL (void);
static void VIC_DummyRTC (void);
static void VIC_DummyEINT0 (void);
static void VIC_DummyEINT1 (void);
static void VIC_DummyEINT2 (void);
static void VIC_DummyEINT3 (void);
static void VIC_DummyAD0 (void);
static void VIC_DummyI2C1 (void);
static void VIC_DummyBOD (void);
static void VIC_DummyETHERNET (void);
static void VIC_DummyUSB (void);
static void VIC_DummyCAN01 (void);
static void VIC_DummyMMC (void);
static void VIC_DummyGP_DMA (void);
static void VIC_DummyTIMER2 (void);
static void VIC_DummyTIMER3 (void);
static void VIC_DummyUART2 (void);
static void VIC_DummyUART3 (void);
static void VIC_DummyI2C2 (void);
static void VIC_DummyI2S (void);
/*
******************************************************************************************************************************
******************************************************************************************************************************
** Global Functions
******************************************************************************************************************************
******************************************************************************************************************************
*/
/*
*********************************************************************************************************
* BSP INITIALIZATION
*
* Description : This function should be called by your application code before you make use of any of the
* functions found in this module.
*
* Arguements : None
*
* Returns : None
*********************************************************************************************************
*/
void BSP_Init (void)
{
// PLL_Init(); /* Initialize the PLL */
// MAM_Init(); /* Initialize the Memory Acceleration Module */
// GPIO_Init(); /* Initialize the board's I/Os */
VIC_Init(); /* Initialize the Vectored Interrupt Controller */
Tmr_TickInit(); /* Initialize the uC/OS-II tick interrupt */
}
/*
*********************************************************************************************************
* Get the CPU Clock Frequency
*
* Description : This function reads CPU registers to determine the CPU clock frequency
*
* Arguements : None
*
* Returns : The CPU Core clock in Hz
*
* Notes : None
*********************************************************************************************************
*/
CPU_INT32U BSP_CPU_ClkFreq (void)
{
CPU_INT32U msel;
CPU_INT32U nsel;
CPU_INT32U fin;
CPU_INT32U pll_clk_feq; /* When the PLL is enabled, this is Fcco */
CPU_INT32U clk_div;
CPU_INT32U clk_freq;
switch (CLKSRCSEL & 0x03) { /* Determine the current clock source */
case 0:
fin = IRC_OSC_FRQ;
break;
case 1:
fin = MAIN_OSC_FRQ;
break;
case 2:
fin = RTC_OSC_FRQ;
break;
default:
fin = IRC_OSC_FRQ;
break;
}
if ((PLLSTAT & (1 << 25)) > 0) { /* If the PLL is currently enabled and connected */
msel = (CPU_INT32U)(PLLSTAT & 0x3FFF) + 1; /* Obtain the PLL multiplier */
nsel = (CPU_INT32U)((PLLSTAT >> 16) & 0x0F) + 1; /* Obtain the PLL divider */
pll_clk_feq = (2 * msel * fin / nsel); /* Compute the PLL output frequency */
} else {
pll_clk_feq = (fin); /* The PLL is bypassed */
}
clk_div = (CPU_INT08U)(CCLKCFG & 0x0F) + 1; /* Obtain the CPU core clock divider */
clk_freq = (CPU_INT32U)(pll_clk_feq / clk_div); /* Compute the ARM Core clock frequency */
return (clk_freq);
}
/*
*********************************************************************************************************
* Get a Peripheral Clock Frequency
*
* Description : This function reads CPU registers to determine the the clock frequency for the specified
* peripheral
*
* Arguements : An ID, one of PCLK_??? defined in bsp.c
*
* Returns : The peripheral's clock in Hz
*********************************************************************************************************
*/
CPU_INT32U BSP_CPU_PclkFreq (CPU_INT08U pclk)
{
CPU_INT32U clk_freq;
CPU_INT32U selection;
clk_freq = BSP_CPU_ClkFreq();
switch (pclk) {
case PCLK_WDT:
case PCLK_TIMER0:
case PCLK_TIMER1:
case PCLK_UART0:
case PCLK_UART1:
case PCLK_PWM0:
case PCLK_PWM1:
case PCLK_I2C0:
case PCLK_SPI:
case PCLK_RTC:
case PCLK_SSP1:
case PCLK_DAC:
case PCLK_ADC:
case PCLK_CAN1:
case PCLK_CAN2:
case PCLK_ACF:
selection = ((PCLKSEL0 >> (pclk * 2)) & 0x03);
if (selection == 0) {
return (clk_freq / 4);
} else if (selection == 1) {
return (clk_freq);
} else if (selection == 2) {
return (clk_freq / 2);
} else {
return (clk_freq / 8);
}
case PCLK_BAT_RAM:
case PCLK_GPIO:
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