EFM32 Gecko Software Documentation
efm32g-doc-5.1.2
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CMSIS Cortex-M3 System Layer for EFM32G devices.
Copyright 2017 Silicon Laboratories, Inc. http://www.silabs.com
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
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Definition in file system_efm32g.h.
#include <stdint.h>
Go to the source code of this file.
Functions | |
void | ACMP0_IRQHandler (void) |
void | ADC0_IRQHandler (void) |
Interrupt handler is executed with frequency ~28Hz when panel is not pressed and with frequency ~140Hz when panel is pressed - this will give ~50 readings per second. | |
void | AES_IRQHandler (void) |
void | BusFault_Handler (void) |
void | CMU_IRQHandler (void) |
void | DAC0_IRQHandler (void) |
void | DebugMon_Handler (void) |
void | DMA_IRQHandler (void) |
Interrupt handler for DMA cycle completion handling. More... | |
void | GPIO_EVEN_IRQHandler (void) |
void | GPIO_ODD_IRQHandler (void) |
void | HardFault_Handler (void) |
void | I2C0_IRQHandler (void) |
void | LCD_IRQHandler (void) |
void | LETIMER0_IRQHandler (void) |
void | LEUART0_IRQHandler (void) |
void | LEUART1_IRQHandler (void) |
void | MemManage_Handler (void) |
void | MSC_IRQHandler (void) |
void | NMI_Handler (void) |
void | PCNT0_IRQHandler (void) |
void | PCNT1_IRQHandler (void) |
void | PCNT2_IRQHandler (void) |
void | PendSV_Handler (void) |
void | Reset_Handler (void) |
void | RTC_IRQHandler (void) |
void | SVC_Handler (void) |
uint32_t | SystemCoreClockGet (void) |
Get the current core clock frequency. More... | |
static __INLINE void | SystemCoreClockUpdate (void) |
Update CMSIS SystemCoreClock variable. More... | |
uint32_t | SystemHFClockGet (void) |
Get the current HFCLK frequency. More... | |
uint32_t | SystemHFXOClockGet (void) |
Get high frequency crystal oscillator clock frequency for target system. More... | |
void | SystemHFXOClockSet (uint32_t freq) |
Set high frequency crystal oscillator clock frequency for target system. More... | |
void | SystemInit (void) |
Initialize the system. More... | |
uint32_t | SystemLFRCOClockGet (void) |
Get low frequency RC oscillator clock frequency for target system. More... | |
uint32_t | SystemLFXOClockGet (void) |
Get low frequency crystal oscillator clock frequency for target system. More... | |
void | SystemLFXOClockSet (uint32_t freq) |
Set low frequency crystal oscillator clock frequency for target system. More... | |
uint32_t | SystemMaxCoreClockGet (void) |
Get the maximum core clock frequency. More... | |
uint32_t | SystemULFRCOClockGet (void) |
Get ultra low frequency RC oscillator clock frequency for target system. More... | |
void | SysTick_Handler (void) |
Interrupt Service Routine for system tick counter. More... | |
void | TIMER0_IRQHandler (void) |
TIMER0 interrupt handler. More... | |
void | TIMER1_IRQHandler (void) |
void | TIMER2_IRQHandler (void) |
void | UART0_RX_IRQHandler (void) |
void | UART0_TX_IRQHandler (void) |
void | UsageFault_Handler (void) |
void | USART0_RX_IRQHandler (void) |
void | USART0_TX_IRQHandler (void) |
void | USART1_RX_IRQHandler (void) |
void | USART1_TX_IRQHandler (void) |
void | USART2_RX_IRQHandler (void) |
void | USART2_TX_IRQHandler (void) |
void | VCMP_IRQHandler (void) |
Variables | |
uint32_t | SystemCoreClock |
System System Clock Frequency (Core Clock). More... | |
uint32_t SystemCoreClockGet | ( | void | ) |
Get the current core clock frequency.
Calculate and get the current core clock frequency based on the current configuration. Assuming that the SystemCoreClock global variable is maintained, the core clock frequency is stored in that variable as well. This function will however calculate the core clock based on actual HW configuration. It will also update the SystemCoreClock global variable.
Definition at line 123 of file system_efm32g.c.
References _CMU_HFCORECLKDIV_HFCORECLKDIV_MASK, _CMU_HFCORECLKDIV_HFCORECLKDIV_SHIFT, CMU, SystemCoreClock, and SystemHFClockGet().
Referenced by CMU_ClockDivSet(), CMU_ClockFreqGet(), CMU_ClockSelectSet(), CMU_HFRCOBandSet(), MSC_Init(), SystemCoreClockUpdate(), SystemHFXOClockSet(), SystemLFXOClockSet(), TFT_AddressMappedInit(), and TFT_DirectInit().
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Update CMSIS SystemCoreClock variable.
CMSIS defines a global variable SystemCoreClock that shall hold the core frequency in Hz. If the core frequency is dynamically changed, the variable must be kept updated in order to be CMSIS compliant.
Notice that if only changing core clock frequency through the EFM32 CMU API, this variable will be kept updated. This function is only provided for CMSIS compliance and if a user modifies the the core clock outside the CMU API.
Definition at line 112 of file system_efm32g.h.
References SystemCoreClockGet().
Referenced by CAPLESENSE_setupCMU(), EMU_EnterEM2(), and EMU_EnterEM3().
uint32_t SystemHFClockGet | ( | void | ) |
Get the current HFCLK frequency.
Definition at line 165 of file system_efm32g.c.
References _CMU_HFRCOCTRL_BAND_MASK, CMU, CMU_HFRCOCTRL_BAND_11MHZ, CMU_HFRCOCTRL_BAND_14MHZ, CMU_HFRCOCTRL_BAND_1MHZ, CMU_HFRCOCTRL_BAND_21MHZ, CMU_HFRCOCTRL_BAND_28MHZ, CMU_HFRCOCTRL_BAND_7MHZ, CMU_STATUS_HFRCOSEL, CMU_STATUS_HFXOSEL, CMU_STATUS_LFRCOSEL, CMU_STATUS_LFXOSEL, EFM32_LFRCO_FREQ, and GetProdRev().
Referenced by CMU_ClockDivSet(), CMU_ClockFreqGet(), and SystemCoreClockGet().
uint32_t SystemHFXOClockGet | ( | void | ) |
Get high frequency crystal oscillator clock frequency for target system.
Definition at line 250 of file system_efm32g.c.
Referenced by CMU_ClockSelectSet().
void SystemHFXOClockSet | ( | uint32_t | freq | ) |
Set high frequency crystal oscillator clock frequency for target system.
[in] | freq | HFXO frequency in Hz used for target. |
Definition at line 276 of file system_efm32g.c.
References CMU, CMU_STATUS_HFXOSEL, and SystemCoreClockGet().
void SystemInit | ( | void | ) |
Initialize the system.
Do required generic HW system init.
Definition at line 306 of file system_efm32g.c.
uint32_t SystemLFRCOClockGet | ( | void | ) |
Get low frequency RC oscillator clock frequency for target system.
Definition at line 321 of file system_efm32g.c.
References EFM32_LFRCO_FREQ.
uint32_t SystemLFXOClockGet | ( | void | ) |
Get low frequency crystal oscillator clock frequency for target system.
Definition at line 357 of file system_efm32g.c.
Referenced by UARTDRV_InitLeuart().
void SystemLFXOClockSet | ( | uint32_t | freq | ) |
Set low frequency crystal oscillator clock frequency for target system.
[in] | freq | LFXO frequency in Hz used for target. |
Definition at line 383 of file system_efm32g.c.
References CMU, CMU_STATUS_LFXOSEL, and SystemCoreClockGet().
uint32_t SystemMaxCoreClockGet | ( | void | ) |
Get the maximum core clock frequency.
Definition at line 148 of file system_efm32g.c.
uint32_t SystemULFRCOClockGet | ( | void | ) |
Get ultra low frequency RC oscillator clock frequency for target system.
Definition at line 340 of file system_efm32g.c.
void TIMER0_IRQHandler | ( | void | ) |
TIMER0 interrupt handler.
When TIMER0 expires the number of pulses on TIMER1 is inserted into channelValues. If this values is bigger than what is recorded in channelMaxValues, channelMaxValues is updated. Finally, the next ACMP channel is selected.
Definition at line 92 of file capsense.c.
References channelMaxValues, channelValues, currentChannel, TIMER0, TIMER1, TIMER_CMD_STOP, and TIMER_IFC_OF.
uint32_t SystemCoreClock |
System System Clock Frequency (Core Clock).
System Clock Frequency (Core Clock)
Required CMSIS global variable that must be kept up-to-date.
Definition at line 100 of file system_efm32g.c.
Referenced by SystemCoreClockGet().