Atmel Software Framework

Power Management Controller (PMC)

Purpose

The Power Management Controller (PMC) optimizes power consumption by controlling all system and user peripheral clocks. The PMC enables/disables the clock inputs to many of the peripherals and the Cortex-M Processor.

Functions

void pmc_clr_fast_startup_input (uint32_t ul_inputs)
 Clear the wake-up inputs for fast startup mode registers (remove event generation). More...
 
void pmc_cp_clr_fast_startup_input (uint32_t ul_inputs)
 Clear the wake-up inputs of coprocessor for fast startup mode registers (remove event generation). More...
 
void pmc_cp_set_fast_startup_input (uint32_t ul_inputs)
 Set the wake-up inputs of coprocessor for fast startup mode registers (event generation). More...
 
void pmc_cpck_set_prescaler (uint32_t ul_pres)
 Set the prescaler for the Coprocessor Master Clock. More...
 
void pmc_cpck_set_source (uint32_t ul_source)
 Set the source for the Coprocessor Master Clock. More...
 
void pmc_disable_all_pck (void)
 Disable all programmable clocks. More...
 
void pmc_disable_all_periph_clk (void)
 Disable all peripheral clocks. More...
 
void pmc_disable_clock_failure_detector (void)
 Disable Clock Failure Detector. More...
 
void pmc_disable_cpbmck (void)
 Disable Coprocessor Bus Master Clocks. More...
 
void pmc_disable_cpck (void)
 Disable Coprocessor Clocks. More...
 
void pmc_disable_interrupt (uint32_t ul_sources)
 Disable PMC interrupts. More...
 
void pmc_disable_pck (uint32_t ul_id)
 Disable the specified programmable clock. More...
 
uint32_t pmc_disable_periph_clk (uint32_t ul_id)
 Disable the specified peripheral clock. More...
 
void pmc_disable_pllack (void)
 Disable PLLA clock. More...
 
void pmc_disable_pllbck (void)
 Disable PLLB clock. More...
 
void pmc_disable_sclk_osc_freq_monitor (void)
 Disable Slow Crystal Oscillator Frequency Monitoring. More...
 
uint32_t pmc_disable_sleepwalking (uint32_t ul_id)
 Disable the sleepwalking of specified peripheral. More...
 
void pmc_disable_udpck (void)
 Disable UDP (USB) clock. More...
 
void pmc_disable_upll_clock (void)
 Disable UPLL clock. More...
 
void pmc_enable_all_pck (void)
 Enable all programmable clocks. More...
 
void pmc_enable_all_periph_clk (void)
 Enable all peripheral clocks. More...
 
void pmc_enable_backupmode (void)
 Enable Backup Mode. More...
 
void pmc_enable_clock_failure_detector (void)
 Enable Clock Failure Detector. More...
 
void pmc_enable_cpbmck (void)
 Enable Coprocessor Bus Master Clocks. More...
 
void pmc_enable_cpck (void)
 Enable Coprocessor Clocks. More...
 
void pmc_enable_interrupt (uint32_t ul_sources)
 Enable PMC interrupts. More...
 
void pmc_enable_pck (uint32_t ul_id)
 Enable the specified programmable clock. More...
 
uint32_t pmc_enable_periph_clk (uint32_t ul_id)
 Enable the specified peripheral clock. More...
 
void pmc_enable_pllack (uint32_t mula, uint32_t pllacount, uint32_t diva)
 Enable PLLA clock. More...
 
void pmc_enable_pllbck (uint32_t mulb, uint32_t pllbcount, uint32_t divb)
 Enable PLLB clock. More...
 
void pmc_enable_sclk_osc_freq_monitor (void)
 Enable Slow Crystal Oscillator Frequency Monitoring. More...
 
void pmc_enable_sleepmode (uint8_t uc_type)
 Enable Sleep Mode. More...
 
uint32_t pmc_enable_sleepwalking (uint32_t ul_id)
 Enable the specified peripheral clock. More...
 
void pmc_enable_udpck (void)
 Enable UDP (USB) clock. More...
 
void pmc_enable_uhpck (void)
 Enable UHP (USB) clock. More...
 
void pmc_enable_upll_clock (void)
 Enable UPLL clock. More...
 
void pmc_enable_waitmode (void)
 Enable Wait Mode. More...
 
uint32_t pmc_get_active_status0 (void)
 Return peripheral active status. More...
 
uint32_t pmc_get_active_status1 (void)
 Return peripheral active status. More...
 
uint32_t pmc_get_interrupt_mask (void)
 Get PMC interrupt mask. More...
 
uint32_t pmc_get_sleepwalking_status0 (void)
 Return peripheral sleepwalking enable status. More...
 
uint32_t pmc_get_sleepwalking_status1 (void)
 Return peripheral sleepwalking enable status. More...
 
uint32_t pmc_get_status (void)
 Get current status. More...
 
uint32_t pmc_get_writeprotect_status (void)
 Return write protect status. More...
 
bool pmc_is_cpbmck_enabled (void)
 Check if the Coprocessor Bus Master Clocks is enabled. More...
 
bool pmc_is_cpck_enabled (void)
 Check if the Coprocessor Clocks is enabled. More...
 
uint32_t pmc_is_locked_pllack (void)
 Is PLLA locked? More...
 
uint32_t pmc_is_locked_pllbck (void)
 Is PLLB locked? More...
 
uint32_t pmc_is_locked_upll (void)
 Is UPLL locked? More...
 
uint32_t pmc_is_pck_enabled (uint32_t ul_id)
 Check if the specified programmable clock is enabled. More...
 
uint32_t pmc_is_periph_clk_enabled (uint32_t ul_id)
 Check if the specified peripheral clock is enabled. More...
 
void pmc_mainck_osc_select (uint32_t ul_xtal_rc)
 Select Main Crystal or internal RC as main clock source. More...
 
void pmc_mck_set_division (uint32_t ul_div)
 Set the division of the MCK. More...
 
void pmc_mck_set_prescaler (uint32_t ul_pres)
 Set the prescaler of the MCK. More...
 
void pmc_mck_set_source (uint32_t ul_source)
 Set the source of the MCK. More...
 
void pmc_osc_bypass_main_xtal (void)
 Bypass main XTAL. More...
 
void pmc_osc_disable_fastrc (void)
 Disable the internal fast RC. More...
 
void pmc_osc_disable_main_xtal (void)
 Disable the main Xtal. More...
 
void pmc_osc_disable_xtal (uint32_t ul_bypass)
 Disable the external Xtal. More...
 
void pmc_osc_enable_fastrc (uint32_t ul_rc)
 Enable fast RC oscillator. More...
 
void pmc_osc_enable_main_xtal (uint32_t ul_xtal_startup_time)
 Enable main XTAL oscillator. More...
 
uint32_t pmc_osc_is_bypassed_main_xtal (void)
 Check if the main crystal is bypassed. More...
 
uint32_t pmc_osc_is_ready_32kxtal (void)
 Check if the external 32k Xtal is ready. More...
 
uint32_t pmc_osc_is_ready_fastrc (void)
 Check if the main fastrc is ready. More...
 
uint32_t pmc_osc_is_ready_main_xtal (void)
 Check if the main crystal is ready. More...
 
uint32_t pmc_osc_is_ready_mainck (void)
 Check if the MAINCK is ready. More...
 
void pmc_pck_set_prescaler (uint32_t ul_id, uint32_t ul_pres)
 Set the prescaler for the specified programmable clock. More...
 
void pmc_pck_set_source (uint32_t ul_id, uint32_t ul_source)
 Set the source oscillator for the specified programmable clock. More...
 
void pmc_set_fast_startup_input (uint32_t ul_inputs)
 Set the wake-up inputs for fast startup mode registers (event generation). More...
 
void pmc_set_flash_in_wait_mode (uint32_t ul_flash_state)
 Set the embedded flash state in wait mode. More...
 
void pmc_set_writeprotect (uint32_t ul_enable)
 Enable or disable write protect of PMC registers. More...
 
void pmc_switch_mainck_to_fastrc (uint32_t ul_moscrcf)
 Switch main clock source selection to internal fast RC. More...
 
void pmc_switch_mainck_to_xtal (uint32_t ul_bypass, uint32_t ul_xtal_startup_time)
 Switch main clock source selection to external Xtal/Bypass. More...
 
uint32_t pmc_switch_mck_to_mainck (uint32_t ul_pres)
 Switch master clock source selection to main clock. More...
 
uint32_t pmc_switch_mck_to_pllack (uint32_t ul_pres)
 Switch master clock source selection to PLLA clock. More...
 
uint32_t pmc_switch_mck_to_pllbck (uint32_t ul_pres)
 Switch master clock source selection to PLLB clock. More...
 
uint32_t pmc_switch_mck_to_sclk (uint32_t ul_pres)
 Switch master clock source selection to slow clock. More...
 
uint32_t pmc_switch_mck_to_upllck (uint32_t ul_pres)
 Switch master clock source selection to UPLL clock. More...
 
uint32_t pmc_switch_pck_to_mainck (uint32_t ul_id, uint32_t ul_pres)
 Switch programmable clock source selection to main clock. More...
 
uint32_t pmc_switch_pck_to_mck (uint32_t ul_id, uint32_t ul_pres)
 Switch programmable clock source selection to mck. More...
 
uint32_t pmc_switch_pck_to_pllack (uint32_t ul_id, uint32_t ul_pres)
 Switch programmable clock source selection to PLLA clock. More...
 
uint32_t pmc_switch_pck_to_pllbck (uint32_t ul_id, uint32_t ul_pres)
 Switch programmable clock source selection to PLLB clock. More...
 
uint32_t pmc_switch_pck_to_sclk (uint32_t ul_id, uint32_t ul_pres)
 Switch programmable clock source selection to slow clock. More...
 
uint32_t pmc_switch_pck_to_upllck (uint32_t ul_id, uint32_t ul_pres)
 Switch programmable clock source selection to UPLL clock. More...
 
void pmc_switch_sclk_to_32kxtal (uint32_t ul_bypass)
 Switch slow clock source selection to external 32k (Xtal or Bypass). More...
 
void pmc_switch_udpck_to_pllack (uint32_t ul_usbdiv)
 Switch UDP (USB) clock source selection to PLLA clock. More...
 
void pmc_switch_udpck_to_pllbck (uint32_t ul_usbdiv)
 Switch UDP (USB) clock source selection to PLLB clock. More...
 
void pmc_switch_udpck_to_upllck (uint32_t ul_usbdiv)
 Switch UDP (USB) clock source selection to UPLL clock. More...
 
void pmc_switch_uhpck_to_pllack (uint32_t ul_usbdiv)
 Switch UHP (USB) clock source selection to PLLA clock. More...
 
void pmc_switch_uhpck_to_pllbck (uint32_t ul_usbdiv)
 Switch UHP (USB) clock source selection to PLLB clock. More...
 

Variables

static uint32_t ul_flash_in_wait_mode = PMC_WAIT_MODE_FLASH_DEEP_POWERDOWN
 

void pmc_clr_fast_startup_input ( uint32_t  ul_inputs)

Clear the wake-up inputs for fast startup mode registers (remove event generation).

Parameters
ul_inputsWake up inputs to disable.

References PMC_FAST_STARTUP_Msk.

void pmc_cp_clr_fast_startup_input ( uint32_t  ul_inputs)

Clear the wake-up inputs of coprocessor for fast startup mode registers (remove event generation).

Parameters
ul_inputsWake up inputs to disable.

References PMC_FAST_STARTUP_Msk.

void pmc_cp_set_fast_startup_input ( uint32_t  ul_inputs)

Set the wake-up inputs of coprocessor for fast startup mode registers (event generation).

Parameters
ul_inputsWake up inputs to enable.

References PMC_FAST_STARTUP_Msk.

void pmc_cpck_set_prescaler ( uint32_t  ul_pres)

Set the prescaler for the Coprocessor Master Clock.

Parameters
ul_presPrescaler value.
void pmc_cpck_set_source ( uint32_t  ul_source)

Set the source for the Coprocessor Master Clock.

Parameters
ul_sourceSource selection value.
void pmc_disable_all_pck ( void  )

Disable all programmable clocks.

void pmc_disable_all_periph_clk ( void  )

Disable all peripheral clocks.

References pmc_disable_periph_clk(), PMC_MASK_STATUS0, and PMC_MASK_STATUS1.

void pmc_disable_clock_failure_detector ( void  )

Disable Clock Failure Detector.

References CKGR_MOR_KEY_PASSWD.

void pmc_disable_cpbmck ( void  )

Disable Coprocessor Bus Master Clocks.

void pmc_disable_cpck ( void  )

Disable Coprocessor Clocks.

void pmc_disable_interrupt ( uint32_t  ul_sources)

Disable PMC interrupts.

Parameters
ul_sourcesInterrupt sources bit map.
void pmc_disable_pck ( uint32_t  ul_id)

Disable the specified programmable clock.

Parameters
ul_idId of the programmable clock.

Referenced by configure_tc_trigger(), and genclk_disable().

uint32_t pmc_disable_periph_clk ( uint32_t  ul_id)

Disable the specified peripheral clock.

Note
The ID must NOT be shifted (i.e., 1 << ID_xxx).
Parameters
ul_idPeripheral ID (ID_xxx).
Return values
0Success.
1Invalid parameter.

References MAX_PERIPH_ID.

Referenced by adc_disable(), pmc_disable_all_periph_clk(), and sysclk_disable_peripheral_clock().

void pmc_disable_pllack ( void  )
void pmc_disable_pllbck ( void  )
void pmc_disable_sclk_osc_freq_monitor ( void  )

Disable Slow Crystal Oscillator Frequency Monitoring.

References CKGR_MOR_KEY_PASSWD.

uint32_t pmc_disable_sleepwalking ( uint32_t  ul_id)

Disable the sleepwalking of specified peripheral.

Note
The ID must NOT be shifted (i.e., 1 << ID_xxx).
Parameters
ul_idPeripheral ID (ID_xxx).
Return values
0Success.
1Invalid parameter.

Referenced by pmc_enable_sleepwalking().

void pmc_disable_udpck ( void  )

Disable UDP (USB) clock.

Referenced by sysclk_set_source().

void pmc_disable_upll_clock ( void  )

Disable UPLL clock.

Referenced by pmc_save_clock_settings().

void pmc_enable_all_pck ( void  )

Enable all programmable clocks.

void pmc_enable_all_periph_clk ( void  )

Enable all peripheral clocks.

References pmc_enable_periph_clk(), PMC_MASK_STATUS0, and PMC_MASK_STATUS1.

void pmc_enable_backupmode ( void  )

Enable Backup Mode.

Enter condition: WFE/(VROFF bit = 1) + (SLEEPDEEP bit = 1)

References SUPC_CR_KEY_PASSWD, SUPC_MR_KEY_PASSWD, and UNUSED.

void pmc_enable_clock_failure_detector ( void  )

Enable Clock Failure Detector.

References CKGR_MOR_KEY_PASSWD.

void pmc_enable_cpbmck ( void  )

Enable Coprocessor Bus Master Clocks.

void pmc_enable_cpck ( void  )

Enable Coprocessor Clocks.

void pmc_enable_interrupt ( uint32_t  ul_sources)

Enable PMC interrupts.

Parameters
ul_sourcesInterrupt sources bit map.
void pmc_enable_pck ( uint32_t  ul_id)

Enable the specified programmable clock.

Parameters
ul_idId of the programmable clock.

Referenced by configure_tc_trigger(), and genclk_enable().

uint32_t pmc_enable_periph_clk ( uint32_t  ul_id)

Enable the specified peripheral clock.

Note
The ID must NOT be shifted (i.e., 1 << ID_xxx).
Parameters
ul_idPeripheral ID (ID_xxx).
Return values
0Success.
1Invalid parameter.

References MAX_PERIPH_ID.

Referenced by adc_enable(), configure_tc_trigger(), pmc_enable_all_periph_clk(), and sysclk_enable_peripheral_clock().

void pmc_enable_pllack ( uint32_t  mula,
uint32_t  pllacount,
uint32_t  diva 
)

Enable PLLA clock.

Parameters
mulaPLLA multiplier.
pllacountPLLA counter.
divaDivider.

References pmc_disable_pllack().

void pmc_enable_pllbck ( uint32_t  mulb,
uint32_t  pllbcount,
uint32_t  divb 
)

Enable PLLB clock.

Parameters
mulbPLLB multiplier.
pllbcountPLLB counter.
divbDivider.

References pmc_disable_pllbck().

void pmc_enable_sclk_osc_freq_monitor ( void  )

Enable Slow Crystal Oscillator Frequency Monitoring.

References CKGR_MOR_KEY_PASSWD.

void pmc_enable_sleepmode ( uint8_t  uc_type)

Enable Sleep Mode.

Enter condition: (WFE or WFI) + (SLEEPDEEP bit = 0) + (LPM bit = 0)

Parameters
uc_type0 for wait for interrupt, 1 for wait for event.
Note
For SAM4S, SAM4C, SAM4CM, SAM4CP, SAMV71 and SAM4E series, since only WFI is effective, uc_type = 1 will be treated as uc_type = 0.

References UNUSED.

uint32_t pmc_enable_sleepwalking ( uint32_t  ul_id)

Enable the specified peripheral clock.

Note
The ID must NOT be shifted (i.e., 1 << ID_xxx).
Parameters
ul_idPeripheral ID (ID_xxx).
Return values
0Success.
1Fail.

References pmc_disable_sleepwalking(), pmc_get_active_status0(), and pmc_get_active_status1().

void pmc_enable_udpck ( void  )

Enable UDP (USB) clock.

Referenced by sysclk_set_source().

void pmc_enable_uhpck ( void  )

Enable UHP (USB) clock.

Referenced by sysclk_set_source().

void pmc_enable_upll_clock ( void  )

Enable UPLL clock.

void pmc_enable_waitmode ( void  )

Enable Wait Mode.

Enter condition: (WAITMODE bit = 1) + FLPM

Note
In this function, FLPM will retain, WAITMODE bit will be set, Generally, this function will be called by pmc_sleep() in order to complete all sequence entering wait mode. See pmc_sleep() for entering different sleep modes.

References CKGR_MOR_KEY_PASSWD, pmc_enable_waitmode(), PMC_WAIT_MODE_FLASH_IDLE, and ul_flash_in_wait_mode.

Referenced by pmc_enable_waitmode(), and pmc_sleep().

uint32_t pmc_get_active_status0 ( void  )

Return peripheral active status.

Returns
the status register value.

Referenced by pmc_enable_sleepwalking().

uint32_t pmc_get_active_status1 ( void  )

Return peripheral active status.

Returns
the status register value.

Referenced by pmc_enable_sleepwalking().

uint32_t pmc_get_interrupt_mask ( void  )

Get PMC interrupt mask.

Returns
The interrupt mask value.
uint32_t pmc_get_sleepwalking_status0 ( void  )

Return peripheral sleepwalking enable status.

Returns
the status register value.
uint32_t pmc_get_sleepwalking_status1 ( void  )

Return peripheral sleepwalking enable status.

Returns
the status register value.
uint32_t pmc_get_status ( void  )

Get current status.

Returns
The current PMC status.
uint32_t pmc_get_writeprotect_status ( void  )

Return write protect status.

Returns
Return write protect status.
bool pmc_is_cpbmck_enabled ( void  )

Check if the Coprocessor Bus Master Clocks is enabled.

Return values
0Coprocessor Bus Master Clocks is disabled.
1Coprocessor Bus Master Clocks is enabled.
bool pmc_is_cpck_enabled ( void  )

Check if the Coprocessor Clocks is enabled.

Return values
0Coprocessor Clocks is disabled.
1Coprocessor Clocks is enabled.
uint32_t pmc_is_locked_pllack ( void  )

Is PLLA locked?

Return values
0Not locked.
1Locked.

Referenced by pll_is_locked().

uint32_t pmc_is_locked_pllbck ( void  )

Is PLLB locked?

Return values
0Not locked.
1Locked.

Referenced by pll_is_locked().

uint32_t pmc_is_locked_upll ( void  )

Is UPLL locked?

Return values
0Not locked.
1Locked.
uint32_t pmc_is_pck_enabled ( uint32_t  ul_id)

Check if the specified programmable clock is enabled.

Parameters
ul_idId of the programmable clock.
Return values
0Programmable clock is disabled or unknown.
1Programmable clock is enabled.
uint32_t pmc_is_periph_clk_enabled ( uint32_t  ul_id)

Check if the specified peripheral clock is enabled.

Note
The ID must NOT be shifted (i.e., 1 << ID_xxx).
Parameters
ul_idPeripheral ID (ID_xxx).
Return values
0Peripheral clock is disabled or unknown.
1Peripheral clock is enabled.

References MAX_PERIPH_ID.

void pmc_mainck_osc_select ( uint32_t  ul_xtal_rc)

Select Main Crystal or internal RC as main clock source.

Note
This function will not enable/disable RC or Main Crystal.
Parameters
ul_xtal_rc0 internal RC is selected, otherwise Main Crystal.

References CKGR_MOR_KEY_PASSWD.

void pmc_mck_set_division ( uint32_t  ul_div)

Set the division of the MCK.

Parameters
ul_divDivision value.
void pmc_mck_set_prescaler ( uint32_t  ul_pres)

Set the prescaler of the MCK.

Parameters
ul_presPrescaler value.

Referenced by sysclk_set_prescalers().

void pmc_mck_set_source ( uint32_t  ul_source)

Set the source of the MCK.

Parameters
ul_sourceSource selection value.

Referenced by sysclk_set_source().

void pmc_osc_bypass_main_xtal ( void  )

Bypass main XTAL.

References CKGR_MOR_KEY_PASSWD.

void pmc_osc_disable_fastrc ( void  )

Disable the internal fast RC.

References CKGR_MOR_KEY_PASSWD.

Referenced by osc_disable().

void pmc_osc_disable_main_xtal ( void  )

Disable the main Xtal.

References CKGR_MOR_KEY_PASSWD.

void pmc_osc_disable_xtal ( uint32_t  ul_bypass)

Disable the external Xtal.

Parameters
ul_bypass0 for Xtal, 1 for bypass.

References CKGR_MOR_KEY_PASSWD.

Referenced by osc_disable().

void pmc_osc_enable_fastrc ( uint32_t  ul_rc)

Enable fast RC oscillator.

Parameters
ul_rcFast RC oscillator(4/8/12Mhz).

References CKGR_MOR_KEY_PASSWD.

void pmc_osc_enable_main_xtal ( uint32_t  ul_xtal_startup_time)

Enable main XTAL oscillator.

Parameters
ul_xtal_startup_timeXtal start-up time, in number of slow clocks.

References CKGR_MOR_KEY_PASSWD.

uint32_t pmc_osc_is_bypassed_main_xtal ( void  )

Check if the main crystal is bypassed.

Return values
0Xtal is bypassed, otherwise not.
uint32_t pmc_osc_is_ready_32kxtal ( void  )

Check if the external 32k Xtal is ready.

Return values
1External 32k Xtal is ready.
0External 32k Xtal is not ready.

Referenced by osc_is_ready().

uint32_t pmc_osc_is_ready_fastrc ( void  )

Check if the main fastrc is ready.

Return values
0Xtal is not ready, otherwise ready.
uint32_t pmc_osc_is_ready_main_xtal ( void  )

Check if the main crystal is ready.

Note
If main crystal is bypassed, it's always ready.
Return values
0main crystal is not ready, otherwise ready.
uint32_t pmc_osc_is_ready_mainck ( void  )

Check if the MAINCK is ready.

Depending on MOSCEL, MAINCK can be one of Xtal, bypass or internal RC.

Return values
1Xtal is ready.
0Xtal is not ready.

Referenced by osc_is_ready().

void pmc_pck_set_prescaler ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Set the prescaler for the specified programmable clock.

Parameters
ul_idPeripheral ID.
ul_presPrescaler value.
void pmc_pck_set_source ( uint32_t  ul_id,
uint32_t  ul_source 
)

Set the source oscillator for the specified programmable clock.

Parameters
ul_idPeripheral ID.
ul_sourceSource selection value.
void pmc_set_fast_startup_input ( uint32_t  ul_inputs)

Set the wake-up inputs for fast startup mode registers (event generation).

Parameters
ul_inputsWake up inputs to enable.

References PMC_FAST_STARTUP_Msk.

void pmc_set_flash_in_wait_mode ( uint32_t  ul_flash_state)

Set the embedded flash state in wait mode.

Parameters
ul_flash_statePMC_WAIT_MODE_FLASH_STANDBY flash in standby mode, PMC_WAIT_MODE_FLASH_DEEP_POWERDOWN flash in deep power down mode.

Referenced by pmc_sleep().

void pmc_set_writeprotect ( uint32_t  ul_enable)

Enable or disable write protect of PMC registers.

Parameters
ul_enable1 to enable, 0 to disable.

References PMC_WPMR_WPKEY_PASSWD.

void pmc_switch_mainck_to_fastrc ( uint32_t  ul_moscrcf)

Switch main clock source selection to internal fast RC.

Parameters
ul_moscrcfFast RC oscillator(4/8/12Mhz).
Return values
0Success.
1Timeout error.
2Invalid frequency.

References CKGR_MOR_KEY_PASSWD.

Referenced by osc_enable().

void pmc_switch_mainck_to_xtal ( uint32_t  ul_bypass,
uint32_t  ul_xtal_startup_time 
)

Switch main clock source selection to external Xtal/Bypass.

Note
The function may switch MCK to SCLK if MCK source is MAINCK to avoid any system crash.
If used in Xtal mode, the Xtal is automatically enabled.
Parameters
ul_bypass0 for Xtal, 1 for bypass.
Return values
0Success.
1Timeout error.

References CKGR_MOR_KEY_PASSWD.

Referenced by osc_enable().

uint32_t pmc_switch_mck_to_mainck ( uint32_t  ul_pres)

Switch master clock source selection to main clock.

Parameters
ul_presProcessor clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

Referenced by sysclk_init().

uint32_t pmc_switch_mck_to_pllack ( uint32_t  ul_pres)

Switch master clock source selection to PLLA clock.

Parameters
ul_presProcessor clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

Referenced by sysclk_init().

uint32_t pmc_switch_mck_to_pllbck ( uint32_t  ul_pres)

Switch master clock source selection to PLLB clock.

Parameters
ul_presProcessor clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

Referenced by sysclk_init().

uint32_t pmc_switch_mck_to_sclk ( uint32_t  ul_pres)

Switch master clock source selection to slow clock.

Parameters
ul_presProcessor clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

Referenced by sysclk_init().

uint32_t pmc_switch_mck_to_upllck ( uint32_t  ul_pres)

Switch master clock source selection to UPLL clock.

Parameters
ul_presProcessor clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

uint32_t pmc_switch_pck_to_mainck ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Switch programmable clock source selection to main clock.

Parameters
ul_idId of the programmable clock.
ul_presProgrammable clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

uint32_t pmc_switch_pck_to_mck ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Switch programmable clock source selection to mck.

Parameters
ul_idId of the programmable clock.
ul_presProgrammable clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

uint32_t pmc_switch_pck_to_pllack ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Switch programmable clock source selection to PLLA clock.

Parameters
ul_idId of the programmable clock.
ul_presProgrammable clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

uint32_t pmc_switch_pck_to_pllbck ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Switch programmable clock source selection to PLLB clock.

Parameters
ul_idId of the programmable clock.
ul_presProgrammable clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

uint32_t pmc_switch_pck_to_sclk ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Switch programmable clock source selection to slow clock.

Parameters
ul_idId of the programmable clock.
ul_presProgrammable clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

Referenced by configure_tc_trigger().

uint32_t pmc_switch_pck_to_upllck ( uint32_t  ul_id,
uint32_t  ul_pres 
)

Switch programmable clock source selection to UPLL clock.

Parameters
ul_idId of the programmable clock.
ul_presProgrammable clock prescaler.
Return values
0Success.
1Timeout error.

References PMC_TIMEOUT.

void pmc_switch_sclk_to_32kxtal ( uint32_t  ul_bypass)

Switch slow clock source selection to external 32k (Xtal or Bypass).

Note
Switching SCLK back to 32krc is only possible by shutting down the VDDIO power supply.
Parameters
ul_bypass0 for Xtal, 1 for bypass.

References SUPC_CR_KEY_PASSWD, and SUPC_MR_KEY_PASSWD.

Referenced by osc_enable().

void pmc_switch_udpck_to_pllack ( uint32_t  ul_usbdiv)

Switch UDP (USB) clock source selection to PLLA clock.

Parameters
ul_usbdivClock divisor.

Referenced by sysclk_set_source().

void pmc_switch_udpck_to_pllbck ( uint32_t  ul_usbdiv)

Switch UDP (USB) clock source selection to PLLB clock.

Parameters
ul_usbdivClock divisor.

Referenced by sysclk_set_source().

void pmc_switch_udpck_to_upllck ( uint32_t  ul_usbdiv)

Switch UDP (USB) clock source selection to UPLL clock.

Parameters
ul_usbdivClock divisor.
void pmc_switch_uhpck_to_pllack ( uint32_t  ul_usbdiv)

Switch UHP (USB) clock source selection to PLLA clock.

Parameters
ul_usbdivClock divisor.

Referenced by sysclk_set_source().

void pmc_switch_uhpck_to_pllbck ( uint32_t  ul_usbdiv)

Switch UHP (USB) clock source selection to PLLB clock.

Parameters
ul_usbdivClock divisor.

Referenced by sysclk_set_source().

uint32_t ul_flash_in_wait_mode = PMC_WAIT_MODE_FLASH_DEEP_POWERDOWN
static

Referenced by pmc_enable_waitmode().