| MINI55_BSP V3.02.004 The Board Support Package for Mini55 Series MCU

Functions
CLK Exported Functions
MINI55 Device Driver » CLK Driver » CLK Exported Constants
Collaboration diagram for CLK Exported Functions:

## Functions
__STATIC_INLINE void | CLK_SysTickDelay (uint32_t us)
| This function execute delay function. More...
void | CLK_DisableCKO (void)
| This function disable frequency output function. More...
void | CLK_EnableCKO (uint32_t u32ClkSrc, uint32_t u32ClkDiv, uint32_t u32ClkDivBy1En)
| This function enable frequency divider module clock, enable frequency divider clock function and configure frequency divider. More...
void | CLK_PowerDown (void)
| This function let system enter to Power-down mode. More...
void | CLK_Idle (void)
| This function let system enter to Idle mode. More...
uint32_t | CLK_GetHXTFreq (void)
| This function get external high frequency crystal frequency. The frequency unit is Hz. More...
uint32_t | CLK_GetLXTFreq (void)
| This function get external low frequency crystal frequency. The frequency unit is Hz. More...
uint32_t | CLK_GetHCLKFreq (void)
| This function get HCLK frequency. The frequency unit is Hz. More...
uint32_t | CLK_GetCPUFreq (void)
| This function get CPU frequency. The frequency unit is Hz. More...
void | CLK_SetHCLK (uint32_t u32ClkSrc, uint32_t u32ClkDiv)
| This function set HCLK clock source and HCLK clock divider. More...
void | CLK_SetModuleClock (uint32_t u32ModuleIdx, uint32_t u32ClkSrc, uint32_t u32ClkDiv)
| This function set selected module clock source and module clock divider. More...
void | CLK_SetSysTickClockSrc (uint32_t u32ClkSrc)
| This function set SysTick clock source. More...
void | CLK_EnableXtalRC (uint32_t u32ClkMask)
| This function enable clock source. More...
void | CLK_DisableXtalRC (uint32_t u32ClkMask)
| This function disable clock source. More...
void | CLK_EnableModuleClock (uint32_t u32ModuleIdx)
| This function enable module clock. More...
void | CLK_DisableModuleClock (uint32_t u32ModuleIdx)
| This function disable module clock. More...
uint32_t | CLK_WaitClockReady (uint32_t u32ClkMask)
| This function check selected clock source status. More...
void | CLK_EnableSysTick (uint32_t u32ClkSrc, uint32_t u32Count)
| Enable System Tick counter. More...
void | CLK_DisableSysTick (void)
| Disable System Tick counter. More...

## Detailed Description

## Function Documentation

## ◆ CLK_DisableCKO()

void CLK_DisableCKO | ( | void |  | ) |

This function disable frequency output function.

Returns
  None

Definition at line 30 of file clk.c.

## ◆ CLK_DisableModuleClock()

void CLK_DisableModuleClock | ( | uint32_t | u32ModuleIdx | ) |

This function disable module clock.

Parameters

  [in] | u32ModuleIdx | is module index WDT_MODULE TMR0_MODULE TMR1_MODULE FDIV_MODULE I2C_MODULE SPI_MODULE UART0_MODULE UART1_MODULE PWM01_MODULE PWM23_MODULE PWM45_MODULE ADC_MODULE ACMP_MODULE

Returns
  None

Definition at line 291 of file clk.c.

## ◆ CLK_DisableSysTick()

void CLK_DisableSysTick | ( | void |  | ) |

Disable System Tick counter.

Parameters

  None |

Returns
  None

This function disable System Tick counter.

Definition at line 363 of file clk.c.

## ◆ CLK_DisableXtalRC()

void CLK_DisableXtalRC | ( | uint32_t | u32ClkMask | ) |

This function disable clock source.

Parameters

  [in] | u32ClkMask | is clock source mask. Including : CLK_PWRCTL_XTLEN_Msk, CLK_PWRCTL_LIRCEN_Msk, CLK_PWRCTL_HIRCEN_Msk,

Returns
  None

Definition at line 245 of file clk.c.

## ◆ CLK_EnableCKO()

void CLK_EnableCKO | ( | uint32_t | u32ClkSrc,
|  | uint32_t | u32ClkDiv,
|  | uint32_t | u32ClkDivBy1En
| ) |  |

This function enable frequency divider module clock, enable frequency divider clock function and configure frequency divider.

Parameters

  [in] | u32ClkSrc | is frequency divider function clock source CLK_CLKSEL2_FDIVSEL_XTAL CLK_CLKSEL2_FDIVSEL_HCLK CLK_CLKSEL2_FDIVSEL_HIRC
  [in] | u32ClkDiv | Set the clock divider to CKO. 0 <= u32ClkDiv <= 15
  [in] | u32ClkDivBy1En | is frequency divided by one enable.

Returns
  None

Output selected clock to CKO. The output clock frequency is divided by u32ClkDiv. The formula is: CKO frequency = (Clock source frequency) / 2^(u32ClkDiv + 1) This function is just used to set CKO clock. User must enable I/O for CKO clock output pin by themselves.

Definition at line 53 of file clk.c.

## ◆ CLK_EnableModuleClock()

void CLK_EnableModuleClock | ( | uint32_t | u32ModuleIdx | ) |

This function enable module clock.

Parameters

  [in] | u32ModuleIdx | is module index. Including : WDT_MODULE TMR0_MODULE TMR1_MODULE FDIV_MODULE I2C_MODULE SPI_MODULE UART0_MODULE UART1_MODULE PWM01_MODULE PWM23_MODULE PWM45_MODULE ADC_MODULE ACMP_MODULE

Returns
  None

Definition at line 268 of file clk.c.

## ◆ CLK_EnableSysTick()

void CLK_EnableSysTick | ( | uint32_t | u32ClkSrc,
|  | uint32_t | u32Count
| ) |  |

Enable System Tick counter.

Parameters

  [in] | u32ClkSrc | is System Tick clock source. Including: CLK_CLKSEL0_STCLKSEL_XTAL CLK_CLKSEL0_STCLKSEL_XTAL_DIV2 CLK_CLKSEL0_STCLKSEL_HCLK_DIV2 CLK_CLKSEL0_STCLKSEL_HIRC_DIV2 CLK_CLKSEL0_STCLKSEL_HCLK
  [in] | u32Count | is System Tick reload value. It could be 0~0xFFFFFF.

Returns
  None

This function set System Tick clock source, reload value, enable System Tick counter and interrupt. The register write-protection function should be disabled before using this function.

Definition at line 336 of file clk.c.

## ◆ CLK_EnableXtalRC()

void CLK_EnableXtalRC | ( | uint32_t | u32ClkMask | ) |

This function enable clock source.

Parameters

  [in] | u32ClkMask | is clock source mask. Including : CLK_PWRCTL_HXT or CLK_PWRCTL_LXT, CLK_PWRCTL_LIRCEN_Msk CLK_PWRCTL_HIRCEN_Msk

Returns
  None

Definition at line 230 of file clk.c.

## ◆ CLK_GetCPUFreq()

uint32_t CLK_GetCPUFreq | ( | void |  | ) |

This function get CPU frequency. The frequency unit is Hz.

Returns
  CPU frequency

Definition at line 125 of file clk.c.

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## ◆ CLK_GetHCLKFreq()

uint32_t CLK_GetHCLKFreq | ( | void |  | ) |

This function get HCLK frequency. The frequency unit is Hz.

Returns
  HCLK frequency

Definition at line 114 of file clk.c.

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## ◆ CLK_GetHXTFreq()

uint32_t CLK_GetHXTFreq | ( | void |  | ) |

This function get external high frequency crystal frequency. The frequency unit is Hz.

Returns
  None

Definition at line 90 of file clk.c.

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## ◆ CLK_GetLXTFreq()

uint32_t CLK_GetLXTFreq | ( | void |  | ) |

This function get external low frequency crystal frequency. The frequency unit is Hz.

Returns
  LXT frequency

Definition at line 102 of file clk.c.

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## ◆ CLK_Idle()

void CLK_Idle | ( | void |  | ) |

This function let system enter to Idle mode.

Returns
  None

Definition at line 80 of file clk.c.

## ◆ CLK_PowerDown()

void CLK_PowerDown | ( | void |  | ) |

This function let system enter to Power-down mode.

Returns
  None

Definition at line 69 of file clk.c.

## ◆ CLK_SetHCLK()

void CLK_SetHCLK | ( | uint32_t | u32ClkSrc,
|  | uint32_t | u32ClkDiv
| ) |  |

This function set HCLK clock source and HCLK clock divider.

Parameters

  [in] | u32ClkSrc | is HCLK clock source. Including : CLK_CLKSEL0_HCLKSEL_XTAL CLK_CLKSEL0_HCLKSEL_LIRC CLK_CLKSEL0_HCLKSEL_HIRC
  [in] | u32ClkDiv | is HCLK clock divider. Including : CLK_CLKDIV_HCLK(x)

Returns
  None

Definition at line 141 of file clk.c.

## ◆ CLK_SetModuleClock()

void CLK_SetModuleClock | ( | uint32_t | u32ModuleIdx,
|  | uint32_t | u32ClkSrc,
|  | uint32_t | u32ClkDiv
| ) |  |

This function set selected module clock source and module clock divider.

Parameters

  [in] | u32ModuleIdx | is module index.
  [in] | u32ClkSrc | is module clock source.
  [in] | u32ClkDiv | is module clock divider.

Returns
  None

Valid parameter combinations listed in following table:

Module index | Clock source | Divider
--- | --- | ---
WDT_MODULE | CLK_CLKSEL1_WDTSEL_XTAL | x
WDT_MODULE | CLK_CLKSEL1_WDTSEL_HCLK_DIV2048 | x
WDT_MODULE | CLK_CLKSEL1_WDTSEL_LIRC | x
TMR0_MODULE | CLK_CLKSEL1_TMR0SEL_XTAL | x
TMR0_MODULE | CLK_CLKSEL1_TMR0SEL_LIRC | x
TMR0_MODULE | CLK_CLKSEL1_TMR0SEL_HCLK | x
TMR0_MODULE | CLK_CLKSEL1_TMR0SEL_HIRC | x
TMR1_MODULE | CLK_CLKSEL1_TMR1SEL_XTAL | x
TMR1_MODULE | CLK_CLKSEL1_TMR1SEL_LIRC | x
TMR1_MODULE | CLK_CLKSEL1_TMR1SEL_HCLK | x
TMR1_MODULE | CLK_CLKSEL1_TMR1SEL_HIRC | x
FDIV_MODULE | CLK_CLKSEL2_FDIVSEL_XTAL | x
FDIV_MODULE | CLK_CLKSEL2_FDIVSEL_HCLK | x
FDIV_MODULE | CLK_CLKSEL2_FDIVSEL_HIRC | x
I2C_MODULE | x | x
SPI_MODULE | CLK_CLKSEL1_SPISEL_HXTorLXT | x
SPI_MODULE | CLK_CLKSEL1_SPISEL_HCLK | x
UART0_MODULE | CLK_CLKSEL1_UART0SEL_XTAL | CLK_CLKDIV_UART(x)
UART0_MODULE | CLK_CLKSEL1_UART0SEL_HIRC | CLK_CLKDIV_UART(x)
UART1_MODULE | CLK_CLKSEL1_UART1SEL_XTAL | CLK_CLKDIV_UART(x)
UART1_MODULE | CLK_CLKSEL1_UART1SEL_HIRC | CLK_CLKDIV_UART(x)
PWM01_MODULE | CLK_CLKSEL1_PWMCH01SEL_HCLK | x
PWM23_MODULE | CLK_CLKSEL1_PWMCH23SEL_HCLK | x
PWM45_MODULE | CLK_CLKSEL2_PWMCH45SEL_HCLK | x
ADC_MODULE | CLK_CLKSEL1_ADCSEL_XTAL | CLK_CLKDIV_ADC(x)
ADC_MODULE | CLK_CLKSEL1_ADCSEL_HCLK | CLK_CLKDIV_ADC(x)
ADC_MODULE | CLK_CLKSEL1_ADCSEL_HIRC | CLK_CLKDIV_ADC(x)
ACMP_MODULE | x | x

Definition at line 187 of file clk.c.

## ◆ CLK_SetSysTickClockSrc()

void CLK_SetSysTickClockSrc | ( | uint32_t | u32ClkSrc | ) |

This function set SysTick clock source.

Parameters

  [in] | u32ClkSrc | is module clock source. Including CLK_CLKSEL0_STCLKSEL_XTAL CLK_CLKSEL0_STCLKSEL_XTAL_DIV2 CLK_CLKSEL0_STCLKSEL_HCLK_DIV2 CLK_CLKSEL0_STCLKSEL_HIRC_DIV2

Returns
  None

Definition at line 217 of file clk.c.

## ◆ CLK_SysTickDelay()

__STATIC_INLINE void CLK_SysTickDelay | ( | uint32_t | us | ) |

This function execute delay function.

Parameters

  [in] | us | Delay time. The Max value is 2^24 / CPU Clock(MHz). Ex: 72MHz => 233016us, 50MHz => 335544us, 48MHz => 349525us, 28MHz => 699050us ...

Returns
  None

Use the SysTick to generate the delay time and the UNIT is in us. The SysTick clock source is from HCLK, i.e the same as system core clock.

Definition at line 156 of file clk.h.

## ◆ CLK_WaitClockReady()

uint32_t CLK_WaitClockReady | ( | uint32_t | u32ClkMask | ) |

This function check selected clock source status.

Parameters

  [in] | u32ClkMask | is selected clock source. Including CLK_STATUS_CLKSFAIL_Msk CLK_STATUS_HIRCSTB_Msk CLK_STATUS_LIRCSTB_Msk CLK_STATUS_XTLSTB_Msk

Returns
  0 clock is not stable 1 clock is stable

To wait for clock ready by specified CLKSTATUS bit or timeout (~5ms)

Definition at line 309 of file clk.c.