picolibrary-microchip-sam-d21da1

Interrupt Facilities

Microchip SAM D21/DA1 interrupt facilities are defined in the include/picolibrary/microchip/sam/d21da1/interrupt.h/source/picolibrary/microchip/sam/d21da1/interrupt.cc header/source file pair.

Table of Contents

• Default Vector Table

Default Vector Table

The default interrupt vector table instance and associated interrupt handler functions are defined in the include/picolibrary/microchip/sam/d21da1/interrupt/default_vector_table.h/source/picolibrary/microchip/sam/d21da1/interrupt/default_vector_table.cc header/source file pair. The default interrupt vector table instance and associated interrupt handler functions are not included in the picolibrary-microchip-samd-d21da1 static library. To use the default interrupt vector table instance and associated interrupt handler functions, include the picolibrary-microchip-sam-d21da1-interrupt-default_vector_table object library objects in an executable’s sources list.

add_executable(
    foo
    $<TARGET_OBJECTS>:picolibrary-microchip-sam-d21da1-interrupt-default_vector_table>
)

The default interrupt vector table instance is placed in the .vectors section and is populated as follows:

• Initial stack pointer value: _stack_end (must be defined by linker script)
• Reset handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_reset()
• NMI handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_nmi()
• Hard fault handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_hard_fault()
• SVCALL handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_svcall()
• PENDSV handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_pendsv()
• SYSTICK0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_systick0()
• PM0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_pm0()
• SYSCTRL0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sysctrl0()
• WDT0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_wdt0()
• RTC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_rtc0()
• EIC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_eic0()
• NVMCTRL0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_nvmctrl0()
• DMAC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_dmac0()
• USB0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_usb0()
• EVSYS0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_evsys0()
• SERCOM0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom0()
• SERCOM1 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom1()
• SERCOM2 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom2()
• SERCOM3 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom3()
• SERCOM4 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom4()
• SERCOM5 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom5()
• TCC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc0()
• TCC1 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc1()
• TCC2 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc2()
• TC3 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc3()
• TC4 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc4()
• TC5 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc5()
• TC6 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc6()
• TC7 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc7()
• ADC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_adc0()
• AC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_ac0()
• DAC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_dac0()
• PTC0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_ptc0()
• I2S0 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_i2s0()
• AC1 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_ac1()
• TCC3 handler: ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc3()

::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_reset() is defined as a weak alias for ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_reset_default() so that its behavior can be overridden.

::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_reset_default() uses the following linker defined symbols:

• _data_flash_start: The start of the data used to initialize the .data section
• _data_start: The start of the .data section
• _data_end: The end of the .data section
• _bss_start: The start of the .bss section
• _bss_end: The end of the .bss section
• _vector_table: The start of the default vector table

The following functions are defined as weak aliases for ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_interrupt_default() so that their behavior can be overridden:

• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_nmi()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_hard_fault()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_svcall()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_pendsv()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_systick0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_pm0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sysctrl0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_wdt0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_rtc0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_eic0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_nvmctrl0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_dmac0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_usb0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_evsys0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom1()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom2()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom3()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom4()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_sercom5()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc1()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc2()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc3()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc4()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc5()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc6()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tc7()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_adc0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_ac0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_dac0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_ptc0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_i2s0()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_ac1()
• ::picolibrary::Microchip::SAM::D21DA1::Interrupt::handle_tcc3()

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