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circuitpython/cc3200/hal/prcm.c
danicampora 2c103d5200 cc3200: Rewrite the PRCM RTC functionality methods. 
This allows to use the On-Chip retention registers for both the
RTC and to share notification flags between the bootloader and the
application. The two flags being shared right now are the "safe boot"
request and the WDT reset cause. we still have 2 more bits free for
future use.
2015-03-14 10:08:47 +01:00

1855 lines
56 KiB
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//*****************************************************************************
//
// prcm.c
//
// Driver for the Power, Reset and Clock Module (PRCM)
//
// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
//
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
//*****************************************************************************
//
//! \addtogroup PRCM_Power_Reset_Clock_Module_api
//! @{
//
//*****************************************************************************
#include "inc/hw_types.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_apps_rcm.h"
#include "inc/hw_gprcm.h"
#include "inc/hw_hib1p2.h"
#include "inc/hw_hib3p3.h"
#include "prcm.h"
#include "interrupt.h"
#include "cpu.h"
#include "utils.h"
#include "rom_map.h"
//*****************************************************************************
// Macro definition
//*****************************************************************************
#define PRCM_SOFT_RESET 0x00000001
#define PRCM_ENABLE_STATUS 0x00000002
#define SYS_CLK 80000000
#define XTAL_CLK 40000000
//*****************************************************************************
// CC3200 does not have a true RTC capability. However, API(s) in this file
// provide an effective mechanism to support RTC feature in the device.
//
// The implementation to support RTC has been kept very simple. A set of
// HIB Memory Registers in conjunction with Slow Clock Counter are used
// to render RTC information to users. Core principle of design involves
// two steps (a) establish an association between user provided wall-clock
// and slow clock counter. (b) store reference value of this associattion
// in HIB Registers. This reference value and SCC value are then combined
// to create real-world calendar time.
//
// Across HIB cycles, value stored in HIB Registers is retained and slow
// clock counter continues to tick, thereby, this arragement is relevant
// and valid as long as device has a (tickle) battery power.
//
// Further, provision also has been made to set an alarm. When it RTC value
// matches that of set for alarm, an interrupt is generated.
//
// HIB MEM REG0 and REG1 are reserved for TI.
//
// If RTC feature is not used, then HIB REG2 & REG3 are available to user.
//
// Lower half of REG0 is used for TI HW ECO.
//*****************************************************************************
#define RTC_U64MSEC_MK(u32Secs, u16Msec) (((unsigned long long)u32Secs << 10)|\
(u16Msec & 0x3FF))
#define RTC_SECS_IN_U64MSEC(u64Msec) ((unsigned long)(u64Msec >> 10))
#define RTC_MSEC_IN_U64MSEC(u64Msec) ((unsigned short)(u64Msec & 0x3FF))
#define RTC_MSEC_U32_REG_ADDR (HIB3P3_BASE + HIB3P3_O_MEM_HIB_REG2)
#define RTC_SECS_U32_REG_ADDR (HIB3P3_BASE + HIB3P3_O_MEM_HIB_REG3)
//*****************************************************************************
// Register Access and Updates
//
// Tick of SCC has a resolution of 32768Hz. Therefore, scaling SCC value by 32
// yields ~1 msec resolution. All operations of SCC in RTC context use ms unit.
//*****************************************************************************
#define SCC_U64MSEC_GET() (MAP_PRCMSlowClkCtrGet() >> 5)
#define SCC_U64MSEC_MATCH_SET(u64Msec) (MAP_PRCMSlowClkCtrMatchSet(u64Msec << 5))
#define SCC_U64MSEC_MATCH_GET() (MAP_PRCMSlowClkCtrMatchGet() >> 5)
//*****************************************************************************
//
// Bit: 31 is used to indicate use of RTC. If set as '1', RTC feature is used.
// Bit: 30 is used to indicate that a safe boot should be performed
// bit: 29 is used to indicate that the last reset was caused by the WDT
// Bits: 28 to 26 are unused
// Bits: 25 to 16 are used to save millisecond part of RTC reference.
// Bits: 15 to 0 are being used for HW Changes / ECO
//
//*****************************************************************************
//*****************************************************************************
// Set RTC USE Bit
//*****************************************************************************
static void RTCUseSet(void)
{
unsigned short usRegValue;
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) | (1 << 31);
PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue);
}
//*****************************************************************************
// Clear RTC USE Bit
//*****************************************************************************
static void RTCUseClear(void)
{
unsigned short usRegValue;
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (~(1 << 31));
PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue);
}
//*****************************************************************************
// Checks if RTC-USE bit is set
//*****************************************************************************
static tBoolean IsRTCUsed(void)
{
return (MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (1 << 31)) ? true : false;
}
//*****************************************************************************
// Read 16-bit mSecs
//*****************************************************************************
static unsigned short RTCU16MSecRegRead(void)
{
return ((MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) >> 16) & 0x03FF);
}
//*****************************************************************************
// Write 16-bit mSecs
//*****************************************************************************
static void RTCU16MSecRegWrite(unsigned short u16Msec)
{
unsigned short usRegValue;
// read the whole register and clear the msec bits
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (~(0x03FF << 16));
// write the msec bits only
MAP_PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue | ((u16Msec & 0x03FF) << 16));
}
//*****************************************************************************
// Read 32-bit Secs
//*****************************************************************************
static unsigned long RTCU32SecRegRead(void)
{
return (MAP_PRCMHIBRegRead(RTC_SECS_U32_REG_ADDR));
}
//*****************************************************************************
// Write 32-bit Secs
//*****************************************************************************
static void RTCU32SecRegWrite(unsigned long u32Msec)
{
MAP_PRCMHIBRegWrite(RTC_SECS_U32_REG_ADDR, u32Msec);
}
//*****************************************************************************
// Macros
//*****************************************************************************
#define IS_RTC_USED() IsRTCUsed()
#define RTC_USE_SET() RTCUseSet()
#define RTC_USE_CLR() RTCUseClear()
#define RTC_U16MSEC_REG_RD() RTCU16MSecRegRead()
#define RTC_U16MSEC_REG_WR(u16Msec) RTCU16MSecRegWrite(u16Msec)
#define RTC_U32SECS_REG_RD() RTCU32SecRegRead()
#define RTC_U32SECS_REG_WR(u32Secs) RTCU32SecRegWrite(u32Secs)
#define SELECT_SCC_U42BITS(u64Msec) (u64Msec & 0x3ffffffffff)
//*****************************************************************************
// Global Peripheral clock and rest Registers
//*****************************************************************************
static const PRCM_PeriphRegs_t PRCM_PeriphRegsList[] =
{
{APPS_RCM_O_CAMERA_CLK_GATING, APPS_RCM_O_CAMERA_SOFT_RESET },
{APPS_RCM_O_MCASP_CLK_GATING, APPS_RCM_O_MCASP_SOFT_RESET },
{APPS_RCM_O_MMCHS_CLK_GATING, APPS_RCM_O_MMCHS_SOFT_RESET },
{APPS_RCM_O_MCSPI_A1_CLK_GATING, APPS_RCM_O_MCSPI_A1_SOFT_RESET },
{APPS_RCM_O_MCSPI_A2_CLK_GATING, APPS_RCM_O_MCSPI_A2_SOFT_RESET },
{APPS_RCM_O_UDMA_A_CLK_GATING, APPS_RCM_O_UDMA_A_SOFT_RESET },
{APPS_RCM_O_GPIO_A_CLK_GATING, APPS_RCM_O_GPIO_A_SOFT_RESET },
{APPS_RCM_O_GPIO_B_CLK_GATING, APPS_RCM_O_GPIO_B_SOFT_RESET },
{APPS_RCM_O_GPIO_C_CLK_GATING, APPS_RCM_O_GPIO_C_SOFT_RESET },
{APPS_RCM_O_GPIO_D_CLK_GATING, APPS_RCM_O_GPIO_D_SOFT_RESET },
{APPS_RCM_O_GPIO_E_CLK_GATING, APPS_RCM_O_GPIO_E_SOFT_RESET },
{APPS_RCM_O_WDOG_A_CLK_GATING, APPS_RCM_O_WDOG_A_SOFT_RESET },
{APPS_RCM_O_UART_A0_CLK_GATING, APPS_RCM_O_UART_A0_SOFT_RESET },
{APPS_RCM_O_UART_A1_CLK_GATING, APPS_RCM_O_UART_A1_SOFT_RESET },
{APPS_RCM_O_GPT_A0_CLK_GATING , APPS_RCM_O_GPT_A0_SOFT_RESET },
{APPS_RCM_O_GPT_A1_CLK_GATING, APPS_RCM_O_GPT_A1_SOFT_RESET },
{APPS_RCM_O_GPT_A2_CLK_GATING, APPS_RCM_O_GPT_A2_SOFT_RESET },
{APPS_RCM_O_GPT_A3_CLK_GATING, APPS_RCM_O_GPT_A3_SOFT_RESET },
{APPS_RCM_O_CRYPTO_CLK_GATING, APPS_RCM_O_CRYPTO_SOFT_RESET },
{APPS_RCM_O_MCSPI_S0_CLK_GATING, APPS_RCM_O_MCSPI_S0_SOFT_RESET },
{APPS_RCM_O_I2C_CLK_GATING, APPS_RCM_O_I2C_SOFT_RESET }
};
//*****************************************************************************
//
//! Requests a safe boot
//!
//! \return None.
//
//*****************************************************************************
void PRCMRequestSafeBoot(void)
{
unsigned short usRegValue;
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) | (1 << 30);
PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue);
}
//*****************************************************************************
//
//! Clear the safe boot request
//!
//! \return None.
//
//*****************************************************************************
void PRCMClearSafeBootRequest(void)
{
unsigned short usRegValue;
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (~(1 << 30));
PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue);
}
//*****************************************************************************
//
//! Read the safe boot request bit. This bit is cleared after reading.
//!
//! \return Value of the safe boot bit
//
//*****************************************************************************
tBoolean PRCMIsSafeBootRequested(void)
{
tBoolean safeboot = (MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (1 << 30)) ? true : false;
PRCMClearSafeBootRequest();
return safeboot;
}
//*****************************************************************************
//
//! Signals that a WDT reset has occurred
//!
//! \return None.
//
//*****************************************************************************
void PRCMSignalWDTReset(void)
{
unsigned short usRegValue;
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) | (1 << 29);
PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue);
}
//*****************************************************************************
//
//! Clear the WDT reset signal
//!
//! \return None.
//
//*****************************************************************************
void PRCMClearWDTResetSignal(void)
{
unsigned short usRegValue;
usRegValue = MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (~(1 << 29));
PRCMHIBRegWrite(RTC_MSEC_U32_REG_ADDR, usRegValue);
}
//*****************************************************************************
//
//! Read the WDT reset signal bit
//!
//! \return Value of the WDT reset signal bit
//
//*****************************************************************************
tBoolean PRCMWasResetBecauseOfWDT(void)
{
return (MAP_PRCMHIBRegRead(RTC_MSEC_U32_REG_ADDR) & (1 << 29)) ? true : false;
}
//*****************************************************************************
//
//! Performs a software reset of a SOC
//!
//! This function performs a software reset of a SOC
//!
//! \return None.
//
//*****************************************************************************
void PRCMSOCReset(void)
{
//
// Reset MCU
//
HWREG(GPRCM_BASE+ GPRCM_O_MCU_GLOBAL_SOFT_RESET) |= 0x1;
}
//*****************************************************************************
//
//! Performs a software reset of a MCU and associated peripherals
//!
//! \param bIncludeSubsystem is \b true to reset associated peripherals.
//!
//! This function performs a software reset of a MCU and associated peripherals.
//! To reset the associated peripheral, the parameter \e bIncludeSubsystem
//! should be set to \b true.
//!
//! \return None.
//
//*****************************************************************************
void PRCMMCUReset(tBoolean bIncludeSubsystem)
{
if(bIncludeSubsystem)
{
//
// Reset Apps processor and associated peripheral
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_SOFT_RESET) = 0x2;
}
else
{
//
// Reset Apps processor only
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_SOFT_RESET) = 0x1;
}
}
//*****************************************************************************
//
//! Gets the reason for a reset.
//!
//! This function returns the reason(s) for a reset. The reset reason are:-
//! -\b PRCM_POWER_ON - Device is powering up.
//! -\b PRCM_LPDS_EXIT - Device is exiting from LPDS.
//! -\b PRCM_CORE_RESET - Device is exiting soft core only reset
//! -\b PRCM_MCU_RESET - Device is exiting soft subsystem reset.
//! -\b PRCM_WDT_RESET - Device was reset by watchdog.
//! -\b PRCM_SOC_RESET - Device is exting SOC reset.
//! -\b PRCM_HIB_EXIT - Device is exiting hibernate.
//!
//! \return Returns one of the cause defined above.
//
//*****************************************************************************
unsigned long PRCMSysResetCauseGet(void)
{
unsigned long ulWakeupStatus;
//
// Read the Reset status
//
ulWakeupStatus = (HWREG(GPRCM_BASE+ GPRCM_O_APPS_RESET_CAUSE) & 0xFF);
//
// For hibernate do additional chaeck.
//
if(ulWakeupStatus == PRCM_POWER_ON)
{
if(MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_WAKE_STATUS) & 0x1)
{
ulWakeupStatus = PRCM_HIB_EXIT;
}
}
//
// Return status.
//
return ulWakeupStatus;
}
//*****************************************************************************
//
//! Enable clock(s) to peripheral.
//!
//! \param ulPeripheral is one of the valid peripherals
//! \param ulClkFlags are bitmask of clock(s) to be enabled.
//!
//! This function enables the clock for the specified peripheral. Peripherals
//! are by default clock gated (disabled) and generates a bus fault if
//! accessed.
//!
//! The parameter \e ulClkFlags can be logical OR of the following:
//! -\b PRCM_RUN_MODE_CLK - Ungates clock to the peripheral
//! -\b PRCM_SLP_MODE_CLK - Keeps the clocks ungated in sleep.
//! -\b PRCM_DSLP_MODE_CLK - Keeps the clock ungated in deepsleep.
//!
//! \return None.
//
//*****************************************************************************
void PRCMPeripheralClkEnable(unsigned long ulPeripheral, unsigned long ulClkFlags)
{
//
// Enable the specified peripheral clocks, Nothing to be done for PRCM_ADC
// as it is a dummy define for pinmux utility code generation
//
if(ulPeripheral != PRCM_ADC)
{
HWREG(ARCM_BASE + PRCM_PeriphRegsList[ulPeripheral].ulClkReg) |= ulClkFlags;
}
//
// Set the default clock for camera
//
if(ulPeripheral == PRCM_CAMERA)
{
HWREG(ARCM_BASE + APPS_RCM_O_CAMERA_CLK_GEN) = 0x0404;
}
}
//*****************************************************************************
//
//! Disables clock(s) to peripheral.
//!
//! \param ulPeripheral is one of the valid peripherals
//! \param ulClkFlags are bitmask of clock(s) to be enabled.
//!
//! This function disable the clock for the specified peripheral. Peripherals
//! are by default clock gated (disabled) and generated a bus fault if
//! accessed.
//!
//! The parameter \e ulClkFlags can be logical OR bit fields as defined in
//! PRCMEnablePeripheral().
//!
//! \return None.
//
//*****************************************************************************
void PRCMPeripheralClkDisable(unsigned long ulPeripheral, unsigned long ulClkFlags)
{
//
// Disable the specified peripheral clocks
//
HWREG(ARCM_BASE + PRCM_PeriphRegsList[ulPeripheral].ulClkReg) &= ~ulClkFlags;
}
//*****************************************************************************
//
//! Gets the input clock for the specified peripheral.
//!
//! \param ulPeripheral is one of the valid peripherals.
//!
//! This function gets the input clock for the specified peripheral.
//!
//! The parameter \e ulPeripheral has the same definition as that in
//! PRCMPeripheralClkEnable();
//!
//! \return Returns input clock frequency for specified peripheral.
//
//*****************************************************************************
unsigned long PRCMPeripheralClockGet(unsigned long ulPeripheral)
{
unsigned long ulClockFreq;
unsigned long ulHiPulseDiv;
unsigned long ulLoPulseDiv;
//
// Get the clock based on specified peripheral.
//
if(((ulPeripheral == PRCM_SSPI) | (ulPeripheral == PRCM_LSPI)
| (ulPeripheral == PRCM_GSPI)))
{
return XTAL_CLK;
}
else if(ulPeripheral == PRCM_CAMERA)
{
ulHiPulseDiv = ((HWREG(ARCM_BASE + APPS_RCM_O_CAMERA_CLK_GEN) >> 8) & 0x07);
ulLoPulseDiv = (HWREG(ARCM_BASE + APPS_RCM_O_CAMERA_CLK_GEN)& 0xFF);
}
else if(ulPeripheral == PRCM_SDHOST)
{
ulHiPulseDiv = ((HWREG(ARCM_BASE + APPS_RCM_O_MMCHS_CLK_GEN) >> 8) & 0x07);
ulLoPulseDiv = (HWREG(ARCM_BASE + APPS_RCM_O_MMCHS_CLK_GEN)& 0xFF);
}
else
{
return SYS_CLK;
}
//
// Compute the clock freq. from the divider value
//
ulClockFreq = (240000000/((ulHiPulseDiv + 1) + (ulLoPulseDiv + 1)));
//
// Return the clock rate.
//
return ulClockFreq;
}
//*****************************************************************************
//
//! Performs a software reset of a peripheral.
//!
//! \param ulPeripheral is one of the valid peripheral.
//!
//! This assert or deassert reset to the specified peripheral based of the
//! \e bAssert parameter.
//!
//! \return None.
//
//*****************************************************************************
void PRCMPeripheralReset(unsigned long ulPeripheral)
{
volatile unsigned long ulDelay;
if( ulPeripheral != PRCM_DTHE)
{
//
// Assert the reset
//
HWREG(ARCM_BASE + PRCM_PeriphRegsList[ulPeripheral].ulRstReg)
|= PRCM_SOFT_RESET;
//
// Delay for a little bit.
//
for(ulDelay = 0; ulDelay < 16; ulDelay++)
{
}
//
// Deassert the reset
//
HWREG(ARCM_BASE+PRCM_PeriphRegsList[ulPeripheral].ulRstReg)
&= ~PRCM_SOFT_RESET;
}
}
//*****************************************************************************
//
//! Determines if a peripheral is ready.
//!
//! \param ulPeripheral is one of the valid modules
//!
//! This function determines if a particular peripheral is ready to be
//! accessed. The peripheral may be in a non-ready state if it is not enabled,
//! is being held in reset, or is in the process of becoming ready after being
//! enabled or taken out of reset.
//!
//! \return Returns \b true if the peripheral is ready, \b false otherwise.
//
//*****************************************************************************
tBoolean PRCMPeripheralStatusGet(unsigned long ulPeripheral)
{
unsigned long ReadyBit;
//
// Read the ready bit status
//
ReadyBit = HWREG(ARCM_BASE + PRCM_PeriphRegsList[ulPeripheral].ulRstReg);
ReadyBit = ReadyBit & PRCM_ENABLE_STATUS;
if (ReadyBit)
{
//
// Module is ready
//
return(true);
}
else
{
//
// Module is not ready
//
return(false);
}
}
//*****************************************************************************
//
//! Configure I2S fracactional divider
//!
//! \param ulI2CClkFreq is the required input clock for McAPS module
//!
//! This function configures I2S fractional divider. By default this
//! divider is set to output 24 Mhz clock to I2S module.
//!
//! The minimum frequency that can be obtained by configuring this divider is
//!
//! (240000KHz/1023.99) = 234.377 KHz
//!
//! \return None.
//
//*****************************************************************************
void PRCMI2SClockFreqSet(unsigned long ulI2CClkFreq)
{
unsigned long long ullDiv;
unsigned short usInteger;
unsigned short usFrac;
ullDiv = (((unsigned long long)240000000 * 65536)/ulI2CClkFreq);
usInteger = (ullDiv/65536);
usFrac = (ullDiv%65536);
HWREG(ARCM_BASE + APPS_RCM_O_MCASP_FRAC_CLK_CONFIG0) =
((usInteger & 0x3FF) << 16 | usFrac);
}
//*****************************************************************************
//
//! Sets the LPDS exit PC and SP restore vlaues.
//!
//! \param ulStackPtr is the SP restore value.
//! \param ulProgCntr is the PC restore value
//!
//! This function sets the LPDS exit PC and SP restore vlaues. Setting
//! \e ulProgCntr to a non-zero value, forces bootloader to jump to that
//! address with Stack Pointer initialized to \e ulStackPtr on LPDS exit,
//! otherwise the application's vector table entries are used.
//!
//! \return None.
//
//*****************************************************************************
void PRCMLPDSRestoreInfoSet(unsigned long ulStackPtr, unsigned long ulProgCntr)
{
//
// Set The SP Value
//
HWREG(0x4402E18C) = ulStackPtr;
//
// Set The PC Value
//
HWREG(0x4402E190) = ulProgCntr;
}
//*****************************************************************************
//
//! Puts the system into Low Power Deel Sleep (LPDS) power mode.
//!
//! This function puts the system into Low Power Deel Sleep (LPDS) power mode.
//! A call to this function never returns and the execution starts from Reset.
//! \sa PRCMLPDSRestoreInfoSet().
//!
//! \return None.
//
//*****************************************************************************
void PRCMLPDSEnter(void)
{
//
// Disable TestPD
//
HWREG(0x4402E168) |= (1<<9);
//
// Set bandgap duty cycle to 1
//
HWREG(HIB1P2_BASE + HIB1P2_O_BGAP_DUTY_CYCLING_EXIT_CFG) = 0x1;
//
// Request LPDS
//
HWREG(ARCM_BASE + APPS_RCM_O_APPS_LPDS_REQ)
= APPS_RCM_APPS_LPDS_REQ_APPS_LPDS_REQ;
__asm(" nop\n"
" nop\n"
" nop\n"
" nop\n");
}
//*****************************************************************************
//
//! Enable the individual LPDS wakeup source(s).
//!
//! \param ulLpdsWakeupSrc is logical OR of wakeup sources.
//!
//! This function enable the individual LPDS wakeup source(s) and following
//! three wakeup sources (\e ulLpdsWakeupSrc ) are supported by the device.
//! -\b PRCM_LPDS_HOST_IRQ
//! -\b PRCM_LPDS_GPIO
//! -\b PRCM_LPDS_TIMER
//!
//! \return None.
//
//*****************************************************************************
void PRCMLPDSWakeupSourceEnable(unsigned long ulLpdsWakeupSrc)
{
unsigned long ulRegVal;
//
// Read the current wakup sources
//
ulRegVal = HWREG(GPRCM_BASE+ GPRCM_O_APPS_LPDS_WAKEUP_CFG);
//
// Enable individual wakeup source
//
ulRegVal = ((ulRegVal | ulLpdsWakeupSrc) & 0x91);
//
// Set the configuration in the register
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_LPDS_WAKEUP_CFG) = ulRegVal;
}
//*****************************************************************************
//
//! Disable the individual LPDS wakeup source(s).
//!
//! \param ulLpdsWakeupSrc is logical OR of wakeup sources.
//!
//! This function enable the individual LPDS wakeup source(s) and following
//! three wake up sources (\e ulLpdsWakeupSrc ) are supported by the device.
//! -\b PRCM_LPDS_HOST_IRQ
//! -\b PRCM_LPDS_GPIO
//! -\b PRCM_LPDS_TIMER
//!
//! \return None.
//
//*****************************************************************************
void PRCMLPDSWakeupSourceDisable(unsigned long ulLpdsWakeupSrc)
{
HWREG(GPRCM_BASE+ GPRCM_O_APPS_LPDS_WAKEUP_CFG) &= ~ulLpdsWakeupSrc;
}
//*****************************************************************************
//
//! Get LPDS wakeup cause
//!
//! This function gets LPDS wakeup caouse
//!
//! \return Returns values enumerated as described in
//! PRCMLPDSWakeupSourceEnable().
//
//*****************************************************************************
unsigned long PRCMLPDSWakeupCauseGet(void)
{
return (HWREG(GPRCM_BASE+ GPRCM_O_APPS_LPDS_WAKEUP_SRC));
}
//*****************************************************************************
//
//! Sets LPDS wakeup Timer
//!
//! \param ulTicks is number of 32.768 KHz clocks
//!
//! This function sets internal LPDS wakeup timer running at 32.768 KHz. The
//! timer is only configured if the parameter \e ulTicks is in valid range i.e.
//! from 21 to 2^32.
//!
//! \return Returns \b true on success, \b false otherwise.
//
//*****************************************************************************
void PRCMLPDSIntervalSet(unsigned long ulTicks)
{
//
// Check sleep is atleast for 21 cycles
// If not set the sleep time to 21 cycles
//
if( ulTicks < 21)
{
ulTicks = 21;
}
HWREG(GPRCM_BASE + GPRCM_O_APPS_LPDS_WAKETIME_WAKE_CFG) = ulTicks;
HWREG(GPRCM_BASE + GPRCM_O_APPS_LPDS_WAKETIME_OPP_CFG) = ulTicks-20;
}
//*****************************************************************************
//
//! Selects the GPIO for LPDS wakeup
//!
//! \param ulGPIOPin is one of the valid GPIO fro LPDS wakeup.
//! \param ulType is the wakeup trigger type.
//!
//! This function setects the wakeup GPIO for LPDS wakeup and can be
//! used to select one out of 7 pre-defined GPIO(s).
//!
//! The parameter \e ulLpdsGPIOSel should be one of the following:-
//! -\b PRCM_LPDS_GPIO2
//! -\b PRCM_LPDS_GPIO4
//! -\b PRCM_LPDS_GPIO13
//! -\b PRCM_LPDS_GPIO17
//! -\b PRCM_LPDS_GPIO11
//! -\b PRCM_LPDS_GPIO24
//! -\b PRCM_LPDS_GPIO26
//!
//! The parameter \e ulType sets the trigger type and can be one of the
//! following:
//! - \b PRCM_LPDS_LOW_LEVEL
//! - \b PRCM_LPDS_HIGH_LEVEL
//! - \b PRCM_LPDS_FALL_EDGE
//! - \b PRCM_LPDS_RISE_EDGE
//!
//! \return None.
//
//*****************************************************************************
void PRCMLPDSWakeUpGPIOSelect(unsigned long ulGPIOPin, unsigned long ulType)
{
//
// Set the wakeup GPIO
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE + HIB3P3_O_MEM_HIB_LPDS_GPIO_SEL, ulGPIOPin);
//
// Set the trigger type.
//
HWREG(GPRCM_BASE + GPRCM_O_APPS_GPIO_WAKE_CONF) = (ulType & 0x3);
}
//*****************************************************************************
//
//! Puts the system into Sleep.
//!
//! This function puts the system into sleep power mode. System exits the power
//! state on any one of the available interrupt. On exit from sleep mode the
//! function returns to the calling function with all the processor core
//! registers retained.
//!
//! \return None.
//
//*****************************************************************************
void PRCMSleepEnter(void)
{
//
// Request Sleep
//
CPUwfi();
}
//*****************************************************************************
//
//! Puts the system into Deep Sleep power mode.
//!
//! This function puts the system into Deep Sleep power mode. System exits the
//! power state on any one of the available interrupt. On exit from deep
//! sleep the function returns to the calling function with all the processor
//! core registers retained.
//!
//! \return None.
//
//*****************************************************************************
void PRCMDeepSleepEnter(void)
{
//
// Set bandgap duty cycle to 1
//
HWREG(HIB1P2_BASE + HIB1P2_O_BGAP_DUTY_CYCLING_EXIT_CFG) = 0x1;
//
// Enable DSLP in cortex
//
HWREG(0xE000ED10)|=1<<2;
//
// Request Deep Sleep
//
CPUwfi();
//
// Disable DSLP in cortex before
// returning to the caller
//
HWREG(0xE000ED10) &= ~(1<<2);
}
//*****************************************************************************
//
//! Enable SRAM column retention during Deep Sleep and/or LPDS Power mode(s)
//!
//! \param ulSramColSel is bit mask of valid SRAM columns.
//! \param ulModeFlags is the bit mask of power modes.
//!
//! This functions enables the SRAM retention. The device supports configurable
//! SRAM column retention in Low Power Deep Sleep (LPDS) and Deep Sleep power
//! modes. Each column is of 64 KB size.
//!
//! The parameter \e ulSramColSel should be logical OR of the following:-
//! -\b PRCM_SRAM_COL_1
//! -\b PRCM_SRAM_COL_2
//! -\b PRCM_SRAM_COL_3
//! -\b PRCM_SRAM_COL_4
//!
//! The parameter \e ulModeFlags selects the power modes and sholud be logical
//! OR of one or more of the following
//! -\b PRCM_SRAM_DSLP_RET
//! -\b PRCM_SRAM_LPDS_RET
//!
//! \return None.
//
//****************************************************************************
void PRCMSRAMRetentionEnable(unsigned long ulSramColSel, unsigned long ulModeFlags)
{
if(ulModeFlags & PRCM_SRAM_DSLP_RET)
{
//
// Configure deep sleep SRAM retention register
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_SRAM_DSLP_CFG) = (ulSramColSel & 0xF);
}
if(ulModeFlags & PRCM_SRAM_LPDS_RET)
{
//
// Configure LPDS SRAM retention register
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_SRAM_LPDS_CFG) = (ulSramColSel & 0xF);
}
}
//*****************************************************************************
//
//! Disable SRAM column retention during Deep Sleep and/or LPDS Power mode(s).
//!
//! \param ulSramColSel is bit mask of valid SRAM columns.
//! \param ulFlags is the bit mask of power modes.
//!
//! This functions disable the SRAM retention. The device supports configurable
//! SRAM column retention in Low Power Deep Sleep (LPDS) and Deep Sleep power
//! modes. Each column is of 64 KB size.
//!
//! The parameter \e ulSramColSel should be logical OR of the following:-
//! -\b PRCM_SRAM_COL_1
//! -\b PRCM_SRAM_COL_2
//! -\b PRCM_SRAM_COL_3
//! -\b PRCM_SRAM_COL_4
//!
//! The parameter \e ulFlags selects the power modes and sholud be logical OR
//! of one or more of the following
//! -\b PRCM_SRAM_DSLP_RET
//! -\b PRCM_SRAM_LPDS_RET
//!
//! \return None.
//
//****************************************************************************
void PRCMSRAMRetentionDisable(unsigned long ulSramColSel, unsigned long ulFlags)
{
if(ulFlags & PRCM_SRAM_DSLP_RET)
{
//
// Configure deep sleep SRAM retention register
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_SRAM_DSLP_CFG) &= ~(ulSramColSel & 0xF);
}
if(ulFlags & PRCM_SRAM_LPDS_RET)
{
//
// Configure LPDS SRAM retention register
//
HWREG(GPRCM_BASE+ GPRCM_O_APPS_SRAM_LPDS_CFG) &= ~(ulSramColSel & 0xF);
}
}
//*****************************************************************************
//
//! Enables individual HIB wakeup source(s).
//!
//! \param ulHIBWakupSrc is logical OR of valid HIB wakeup sources.
//!
//! This function enables individual HIB wakeup source(s). The paramter
//! \e ulHIBWakupSrc is the bit mask of HIB wakeup sources and should be
//! logical OR of one or more of the follwoing :-
//! -\b PRCM_HIB_SLOW_CLK_CTR
//! -\b PRCM_HIB_GPIO2
//! -\b PRCM_HIB_GPIO4
//! -\b PRCM_HIB_GPIO13
//! -\b PRCM_HIB_GPIO17
//! -\b PRCM_HIB_GPIO11
//! -\b PRCM_HIB_GPIO24
//! -\b PRCM_HIB_GPIO26
//!
//! \return None.
//
//*****************************************************************************
void PRCMHibernateWakeupSourceEnable(unsigned long ulHIBWakupSrc)
{
unsigned long ulRegValue;
//
// Read the RTC register
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_WAKE_EN);
//
// Enable the RTC as wakeup source if specified
//
ulRegValue |= (ulHIBWakupSrc & 0x1);
//
// Enable HIB wakeup sources
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_WAKE_EN,ulRegValue);
//
// REad the GPIO wakeup configuration register
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_GPIO_WAKE_EN);
//
// Enable the specified GPIOs a wakeup sources
//
ulRegValue |= ((ulHIBWakupSrc>>16)&0xFF);
//
// Write the new register configuration
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_GPIO_WAKE_EN,ulRegValue);
}
//*****************************************************************************
//
//! Disable individual HIB wakeup source(s).
//!
//! \param ulHIBWakupSrc is logical OR of valid HIB wakeup sources.
//!
//! This function disable individual HIB wakeup source(s). The paramter
//! \e ulHIBWakupSrc is same as bit fileds defined in
//! PRCMEnableHibernateWakeupSource()
//!
//! \return None.
//
//*****************************************************************************
void PRCMHibernateWakeupSourceDisable(unsigned long ulHIBWakupSrc)
{
unsigned long ulRegValue;
//
// Read the RTC register
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_WAKE_EN);
//
// Disable the RTC as wakeup source if specified
//
ulRegValue &= ~(ulHIBWakupSrc & 0x1);
//
// Disable HIB wakeup sources
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_WAKE_EN,ulRegValue);
//
// Read the GPIO wakeup configuration register
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_GPIO_WAKE_EN);
//
// Enable the specified GPIOs a wakeup sources
//
ulRegValue &= ~((ulHIBWakupSrc>>16)&0xFF);
//
// Write the new register configuration
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_GPIO_WAKE_EN,ulRegValue);
}
//*****************************************************************************
//
//! Get hibernate wakeup cause
//!
//! This function gets the hibernate wakeup cause.
//!
//! \return Returns \b PRCM_HIB_WAKEUP_CAUSE_SLOW_CLOCK or
//! \b PRCM_HIB_WAKEUP_CAUSE_GPIO
//
//*****************************************************************************
unsigned long PRCMHibernateWakeupCauseGet(void)
{
return ((MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_WAKE_STATUS)>>1)&0xF);
}
//*****************************************************************************
//
//! Sets Hibernate wakeup Timer
//!
//! \param ullTicks is number of 32.768 KHz clocks
//!
//! This function sets internal hibernate wakeup timer running at 32.768 KHz.
//!
//! \return Returns \b true on success, \b false otherwise.
//
//*****************************************************************************
void PRCMHibernateIntervalSet(unsigned long long ullTicks)
{
unsigned long long ullRTCVal;
//
// Latch the RTC vlaue
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_TIMER_READ ,0x1);
//
// Read latched values as 2 32-bit vlaues
//
ullRTCVal = MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_TIMER_MSW);
ullRTCVal = ullRTCVal << 32;
ullRTCVal |= MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_TIMER_LSW);
//
// Add the interval
//
ullRTCVal = ullRTCVal + ullTicks;
//
// Set RTC match value
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_WAKE_LSW_CONF,
(unsigned long)(ullRTCVal));
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_WAKE_MSW_CONF,
(unsigned long)(ullRTCVal>>32));
}
//*****************************************************************************
//
//! Selects the GPIO(s) for hibernate wakeup
//!
//! \param ulGPIOBitMap is the bit-map of valid hibernate wakeup GPIO.
//! \param ulType is the wakeup trigger type.
//!
//! This function setects the wakeup GPIO for hibernate and can be
//! used to select any combination of 7 pre-defined GPIO(s).
//!
//! This function enables individual HIB wakeup source(s). The paramter
//! \e ulGPIOBitMap should be one of the follwoing :-
//! -\b PRCM_HIB_GPIO2
//! -\b PRCM_HIB_GPIO4
//! -\b PRCM_HIB_GPIO13
//! -\b PRCM_HIB_GPIO17
//! -\b PRCM_HIB_GPIO11
//! -\b PRCM_HIB_GPIO24
//! -\b PRCM_HIB_GPIO26
//!
//! The parameter \e ulType sets the trigger type and can be one of the
//! following:
//! - \b PRCM_HIB_LOW_LEVEL
//! - \b PRCM_HIB_HIGH_LEVEL
//! - \b PRCM_HIB_FALL_EDGE
//! - \b PRCM_HIB_RISE_EDGE
//!
//! \return None.
//
//*****************************************************************************
void PRCMHibernateWakeUpGPIOSelect(unsigned long ulGPIOBitMap, unsigned long ulType)
{
unsigned char ucLoop;
unsigned long ulRegValue;
//
// Shift the bits to extract the GPIO selection
//
ulGPIOBitMap >>= 16;
//
// Set the configuration for each GPIO
//
for(ucLoop=0; ucLoop < 7; ucLoop++)
{
if(ulGPIOBitMap & (1<<ucLoop))
{
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_GPIO_WAKE_CONF);
ulRegValue |= (ulType << (ucLoop*2));
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_GPIO_WAKE_CONF, ulRegValue);
}
}
}
//*****************************************************************************
//
//! Puts the system into Hibernate
//!
//! This function puts the system into Hibernate. The device enters HIB
//! immediately and on exit from HIB device core starts its execution from
//! reset thus the function never returns.
//!
//! \return None.
//
//*****************************************************************************
void PRCMHibernateEnter(void)
{
//
// Request hibernate.
//
MAP_PRCMHIBRegWrite((HIB3P3_BASE+HIB3P3_O_MEM_HIB_REQ),0x1);
__asm(" nop\n"
" nop\n"
" nop\n"
" nop\n");
}
//*****************************************************************************
//
//! Gets the current value of the internal slow clock counter
//!
//! This function latches and reads the internal RTC running at 32.768 Khz
//!
//! \return 64-bit current counter vlaue.
//
//*****************************************************************************
unsigned long long PRCMSlowClkCtrGet(void)
{
unsigned long long ullRTCVal;
//
// Latch the RTC vlaue
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_TIMER_READ, 0x1);
//
// Read latched values as 2 32-bit vlaues
//
ullRTCVal = MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_TIMER_MSW);
ullRTCVal = ullRTCVal << 32;
ullRTCVal |= MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_HIB_RTC_TIMER_LSW);
return ullRTCVal;
}
//*****************************************************************************
//
//! Sets slow clock counter match value to interrupt the processor.
//!
//! \param ullValue is the match value.
//!
//! This function sets the match value for slow clock counter. This is use
//! to interrupt the processor when RTC counts to the specified value.
//!
//! \return None.
//
//*****************************************************************************
void PRCMSlowClkCtrMatchSet(unsigned long long ullValue)
{
//
// Set RTC match value
//
MAP_PRCMHIBRegWrite(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_LSW_CONF,
(unsigned long)(ullValue));
MAP_PRCMHIBRegWrite(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_MSW_CONF,
(unsigned long)(ullValue>>32));
}
//*****************************************************************************
//
//! Gets slow clock counter match value.
//!
//! This function gets the match value for slow clock counter. This is use
//! to interrupt the processor when RTC counts to the specified value.
//!
//! \return None.
//
//*****************************************************************************
unsigned long long PRCMSlowClkCtrMatchGet(void)
{
unsigned long long ullValue;
//
// Get RTC match value
//
ullValue = MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_MSW_CONF);
ullValue = ullValue<<32;
ullValue |= MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_LSW_CONF);
//
// Return the value
//
return ullValue;
}
//*****************************************************************************
//
//! Write to On-Chip Retention (OCR) register.
//!
//! This function writes to On-Chip retention register. The device supports two
//! 4-byte OCR register which are retained across all power mode.
//!
//! The parameter \e ucIndex is an index of the OCR and can be \b 0 or \b 1.
//!
//! \return None.
//
//*****************************************************************************
void PRCMOCRRegisterWrite(unsigned char ucIndex, unsigned long ulRegValue)
{
MAP_PRCMHIBRegWrite(HIB3P3_BASE+HIB3P3_O_MEM_HIB_REG2+(ucIndex << 2),ulRegValue);
}
//*****************************************************************************
//
//! Read from On-Chip Retention (OCR) register.
//!
//! This function reads from On-Chip retention register. The device supports two
//! 4-byte OCR register which are retained across all power mode.
//!
//! The parameter \e ucIndex is an index of the OCR and can be \b 0 or \b 1.
//!
//! \return None.
//
//*****************************************************************************
unsigned long PRCMOCRRegisterRead(unsigned char ucIndex)
{
//
// Return the read value.
//
return MAP_PRCMHIBRegRead(HIB3P3_BASE+HIB3P3_O_MEM_HIB_REG2 + (ucIndex << 2));
}
//*****************************************************************************
//
//! Registers an interrupt handler for the PRCM.
//!
//! \param pfnHandler is a pointer to the function to be called when the
//! interrupt is activated.
//!
//! This function does the actual registering of the interrupt handler. This
//! function enables the global interrupt in the interrupt controller;
//!
//! \return None.
//
//*****************************************************************************
void PRCMIntRegister(void (*pfnHandler)(void))
{
//
// Register the interrupt handler.
//
IntRegister(INT_PRCM, pfnHandler);
//
// Enable the PRCM interrupt.
//
IntEnable(INT_PRCM);
}
//*****************************************************************************
//
//! Unregisters an interrupt handler for the PRCM.
//!
//! This function does the actual unregistering of the interrupt handler. It
//! clears the handler to be called when a PRCM interrupt occurs. This
//! function also masks off the interrupt in the interrupt controller so that
//! the interrupt handler no longer is called.
//!
//! \return None.
//
//*****************************************************************************
void PRCMIntUnregister(void)
{
//
// Enable the UART interrupt.
//
IntDisable(INT_PRCM);
//
// Register the interrupt handler.
//
IntUnregister(INT_PRCM);
}
//*****************************************************************************
//
//! Enables individual PRCM interrupt sources.
//!
//! \param ulIntFlags is the bit mask of the interrupt sources to be enabled.
//!
//! This function enables the indicated ARCM interrupt sources. Only the
//! sources that are enabled can be reflected to the processor interrupt;
//! disabled sources have no effect on the processor.
//!
//! The \e ulIntFlags parameter is the logical OR of any of the following:
//! -\b PRCM_INT_SLOW_CLK_CTR
//!
//
//*****************************************************************************
void PRCMIntEnable(unsigned long ulIntFlags)
{
unsigned long ulRegValue;
if(ulIntFlags & PRCM_INT_SLOW_CLK_CTR )
{
//
// Enable PRCM interrupt
//
HWREG(ARCM_BASE + APPS_RCM_O_APPS_RCM_INTERRUPT_ENABLE) |= 0x4;
//
// Enable RTC interrupt
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_ENABLE);
ulRegValue |= 0x1;
MAP_PRCMHIBRegWrite(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_ENABLE, ulRegValue);
}
}
//*****************************************************************************
//
//! Disables individual PRCM interrupt sources.
//!
//! \param ulIntFlags is the bit mask of the interrupt sources to be disabled.
//!
//! This function disables the indicated ARCM interrupt sources. Only the
//! sources that are enabled can be reflected to the processor interrupt;
//! disabled sources have no effect on the processor.
//!
//! The \e ulIntFlags parameter has the same definition as the \e ulIntFlags
//! parameter to PRCMEnableInterrupt().
//!
//! \return None.
//
//*****************************************************************************
void PRCMIntDisable(unsigned long ulIntFlags)
{
unsigned long ulRegValue;
if(ulIntFlags & PRCM_INT_SLOW_CLK_CTR )
{
//
// Disable PRCM interrupt
//
HWREG(ARCM_BASE + APPS_RCM_O_APPS_RCM_INTERRUPT_ENABLE) &= ~0x4;
//
// Disable RTC interrupt
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_ENABLE);
ulRegValue &= ~0x1;
MAP_PRCMHIBRegWrite(HIB3P3_BASE + HIB3P3_O_MEM_HIB_RTC_IRQ_ENABLE, ulRegValue);
}
}
//*****************************************************************************
//
//! Gets the current interrupt status.
//!
//! This function returns the PRCM interrupt status of interrupts that are
//! allowed to reflect to the processor. The interrupts are cleared on read.
//!
//! \return Returns the current interrupt status.
//
//*****************************************************************************
unsigned long PRCMIntStatus(void)
{
return HWREG(ARCM_BASE + APPS_RCM_O_APPS_RCM_INTERRUPT_STATUS);
}
//*****************************************************************************
//
//! Mark the function of RTC as being used
//!
//! This function marks in HW that feature to maintain calendar time in device
//! is being used.
//!
//! Specifically, this feature reserves user's HIB Register-1 accessed through
//! PRCMOCRRegisterWrite(1) for internal work / purpose, therefore, the stated
//! register is not available to user. Also, users must not excercise the Slow
//! Clock Counter API(s), if RTC has been set for use.
//!
//! \return None.
//
//*****************************************************************************
void PRCMRTCInUseSet(void)
{
RTC_USE_SET();
return;
}
//*****************************************************************************
//
//! Clear the function of RTC as being used
//!
//! \return None.
//
//*****************************************************************************
void PRCMRTCInUseClear(void)
{
RTC_USE_CLR();
return;
}
//*****************************************************************************
//
//! Ascertain whether function of RTC is being used
//!
//! This function indicates whether function of RTC is being used on the device
//! or not.
//!
//! This routine should be utilized by the application software, when returning
//! from low-power, to confirm that RTC has been put to use and may not need to
//! set the value of the RTC.
//!
//! The RTC feature, if set or marked, can be only reset either through reboot
//! or power cycle.
//!
//! \return None.
//
//*****************************************************************************
tBoolean PRCMRTCInUseGet(void)
{
return IS_RTC_USED()? true : false;
}
//*****************************************************************************
//
//! Set the calendar time in the device.
//!
//! \param ulSecs refers to the seconds part of the calendar time
//! \param usMsec refers to the fractional (ms) part of the second
//!
//! This function sets the specified calendar time in the device. The calendar
//! time is outlined in terms of seconds and milliseconds. However, the device
//! makes no assumption about the origin or reference of the calendar time.
//!
//! The device uses the indicated calendar value to update and maintain the
//! wall-clock time across active and low power states.
//!
//! The function PRCMRTCInUseSet() must be invoked prior to use of this feature.
//!
//! \return None.
//
//*****************************************************************************
void PRCMRTCSet(unsigned long ulSecs, unsigned short usMsec)
{
unsigned long long ullMsec = 0;
if(IS_RTC_USED()) {
ullMsec = RTC_U64MSEC_MK(ulSecs, usMsec) - SCC_U64MSEC_GET();
RTC_U32SECS_REG_WR(RTC_SECS_IN_U64MSEC(ullMsec));
RTC_U16MSEC_REG_WR(RTC_MSEC_IN_U64MSEC(ullMsec));
}
return;
}
//*****************************************************************************
//
//! Get the instantaneous calendar time from the device.
//!
//! \param ulSecs refers to the seconds part of the calendar time
//! \param usMsec refers to the fractional (ms) part of the second
//!
//! This function fetches the instantaneous value of the ticking calendar time
//! from the device. The calendar time is outlined in terms of seconds and
//! milliseconds.
//!
//! The device provides the calendar value that has been maintained across
//! active and low power states.
//!
//! The function PRCMRTCSet() must have been invoked once to set a reference.
//!
//! \return None.
//
//*****************************************************************************
void PRCMRTCGet(unsigned long *ulSecs, unsigned short *usMsec)
{
unsigned long long ullMsec = 0;
if(IS_RTC_USED()) {
ullMsec = RTC_U64MSEC_MK(RTC_U32SECS_REG_RD(),
RTC_U16MSEC_REG_RD());
ullMsec += SCC_U64MSEC_GET();
}
*ulSecs = RTC_SECS_IN_U64MSEC(ullMsec);
*usMsec = RTC_MSEC_IN_U64MSEC(ullMsec);
return;
}
//*****************************************************************************
//
//! Set a calendar time alarm.
//!
//! \param ulSecs refers to the seconds part of the calendar time
//! \param usMsec refers to the fractional (ms) part of the second
//!
//! This function sets an wall-clock alarm in the device to be reported for a
//! futuristic calendar time. The calendar time is outlined in terms of seconds
//! and milliseconds.
//!
//! The device provides uses the calendar value that has been maintained across
//! active and low power states to report attainment of alarm time.
//!
//! The function PRCMRTCSet() must have been invoked once to set a reference.
//!
//! \return None.
//
//*****************************************************************************
void PRCMRTCMatchSet(unsigned long ulSecs, unsigned short usMsec)
{
unsigned long long ullMsec = 0;
if(IS_RTC_USED()) {
ullMsec = RTC_U64MSEC_MK(ulSecs, usMsec);
ullMsec -= RTC_U64MSEC_MK(RTC_U32SECS_REG_RD(),
RTC_U16MSEC_REG_RD());
SCC_U64MSEC_MATCH_SET(SELECT_SCC_U42BITS(ullMsec));
}
return;
}
//*****************************************************************************
//
//! Get a previously set calendar time alarm.
//!
//! \param ulSecs refers to the seconds part of the calendar time
//! \param usMsec refers to the fractional (ms) part of the second
//!
//! This function fetches from the device a wall-clock alarm that would have
//! been previously set in the device. The calendar time is outlined in terms
//! of seconds and milliseconds.
//!
//! If no alarm was set in the past, then this function would fetch a random
//! information.
//!
//! The function PRCMRTCMatchSet() must have been invoked once to set an alarm.
//!
//! \return None.
//
//*****************************************************************************
void PRCMRTCMatchGet(unsigned long *ulSecs, unsigned short *usMsec)
{
unsigned long long ullMsec = 0;
if(IS_RTC_USED()) {
ullMsec = SCC_U64MSEC_MATCH_GET();
ullMsec += RTC_U64MSEC_MK(RTC_U32SECS_REG_RD(),
RTC_U16MSEC_REG_RD());
}
*ulSecs = RTC_SECS_IN_U64MSEC(ullMsec);
*usMsec = RTC_MSEC_IN_U64MSEC(ullMsec);
return;
}
//*****************************************************************************
//
//! MCU Initialization Routine
//!
//! This function sets mandatory configurations for the MCU
//!
//! \return None
//
//*****************************************************************************
void PRCMCC3200MCUInit(void)
{
unsigned long ulRegValue;
//
// DIG DCDC LPDS ECO Enable
//
HWREG(0x4402F064) |= 0x800000;
//
// Enable hibernate ECO for PG 1.32 devices only. With this ECO enabled,
// any hibernate wakeup source will be kept masked until the device enters
// hibernate completely (analog + digital)
//
ulRegValue = MAP_PRCMHIBRegRead(HIB3P3_BASE + HIB3P3_O_MEM_HIB_REG0);
MAP_PRCMHIBRegWrite(HIB3P3_BASE + HIB3P3_O_MEM_HIB_REG0, ulRegValue | (1<<4));
//
// Handling the clock switching (for 1.32 only)
//
HWREG(0x4402E16C) |= 0x3C;
//
// Enable uDMA
//
MAP_PRCMPeripheralClkEnable(PRCM_UDMA,PRCM_RUN_MODE_CLK);
//
// Reset uDMA
//
MAP_PRCMPeripheralReset(PRCM_UDMA);
//
// Disable uDMA
//
MAP_PRCMPeripheralClkDisable(PRCM_UDMA,PRCM_RUN_MODE_CLK);
//
// Enable RTC
//
if(MAP_PRCMSysResetCauseGet()== PRCM_POWER_ON)
{
MAP_PRCMHIBRegWrite(0x4402F804,0x1);
}
//
// SWD mode
//
if (((HWREG(0x4402F0C8) & 0xFF) == 0x2))
{
HWREG(0x4402E110) = ((HWREG(0x4402E110) & ~0xC0F) | 0x2);
HWREG(0x4402E114) = ((HWREG(0x4402E110) & ~0xC0F) | 0x2);
}
//
// Override JTAG mux
//
HWREG(0x4402E184) |= 0x2;
//
// Change UART pins(55,57) mode to PIN_MODE_0 if they are in PIN_MODE_1
//
if ((HWREG(0x4402E0A4) & 0xF) == 0x1)
{
HWREG(0x4402E0A4) = ((HWREG(0x4402E0A4) & ~0xF));
}
if ((HWREG(0x4402E0A8) & 0xF) == 0x1)
{
HWREG(0x4402E0A8) = ((HWREG(0x4402E0A8) & ~0xF));
}
//
// DIG DCDC VOUT trim settings based on PROCESS INDICATOR
//
if (((HWREG(0x4402DC78) >> 22) & 0xF) == 0xE)
{
HWREG(0x4402F0B0) = ((HWREG(0x4402F0B0) & ~(0x00FC0000))|(0x32 << 18));
}
else
{
HWREG(0x4402F0B0) = ((HWREG(0x4402F0B0) & ~(0x00FC0000))|(0x29 << 18));
}
//
// Enable SOFT RESTART in case of DIG DCDC collapse
//
HWREG(0x4402FC74) &= ~(0x10000000);
//
// Disable the sleep for ANA DCDC
//
HWREG(0x4402F0A8) |= 0x00000004 ;
}
//*****************************************************************************
//
//! Reads 32-bit value from register at specified address
//!
//! \param ulRegAddr is the address of register to be read.
//!
//! This function reads 32-bit value from the register as specified by
//! \e ulRegAddr.
//!
//! \return Return the value of the register.
//
//*****************************************************************************
unsigned long PRCMHIBRegRead(unsigned long ulRegAddr)
{
unsigned long ulValue;
//
// Read the Reg value
//
ulValue = HWREG(ulRegAddr);
//
// Wait for 200 uSec
//
UtilsDelay((80*200)/3);
//
// Return the value
//
return ulValue;
}
//*****************************************************************************
//
//! Writes 32-bit value to register at specified address
//!
//! \param ulRegAddr is the address of register to be read.
//! \param ulValue is the 32-bit value to be written.
//!
//! This function writes 32-bit value passed as \e ulValue to the register as
//! specified by \e ulRegAddr
//!
//! \return None
//
//*****************************************************************************
void PRCMHIBRegWrite(unsigned long ulRegAddr, unsigned long ulValue)
{
//
// Read the Reg value
//
HWREG(ulRegAddr) = ulValue;
//
// Wait for 200 uSec
//
UtilsDelay((80*200)/3);
}
//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************
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