Roy_01
211 lines
6.2 KiB
Markdown
211 lines
6.2 KiB
Markdown
sys_tick_swi
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---
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This example is used to configure ECLIC module
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> + Support to register the proprietary ISR for specific requirement.
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> + Support programmable IRQ-Level
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>> reference `sys_irq_level_t`
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> + Support programmable IRQ-Priority
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>> reference `sys_irq_priority_t`
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+ Configure SWI (Software Interupt) level
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> The default level of system timer is `SYS_IRQ_LEVEL_L`
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```c
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// at main.c
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/**
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* The defualt level of system timer is SYS_IRQ_LEVEL_L
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* ps. SYS_IRQ_LEVEL_LL/ SYS_IRQ_LEVEL_L/ SYS_IRQ_LEVEL_M
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*/
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#define CONFIG_IRQ_SWI_LEVEL SYS_IRQ_LEVEL_L
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```
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- Use `sys_register_IRQ()` to re-configure attributes of an interrupt
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```c
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sys_irq_attr_t irq_attr = { .disable_vector = false, };
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irq_attr.trig_mode = SYS_IRQ_TRIGGER_LEVEL;
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irq_attr.level = SYS_IRQ_LEVEL_L;
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irq_attr.priority = SYS_IRQ_PRIORITY_MIDDEN;
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sys_register_IRQ(SysTimer_IRQn, _mtim_handler, &irq_attr);
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```
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+ This example use message (in ISR) to figure out the relation of Level/Priority of ECLIC
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> Logging message in ISR is misbehavior
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- For logging message, the period of system tick MUST be more then `1-msec`
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```
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// at main.c,
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/* The period MUST be more then 1 msec */
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sys_config_systick(SYS_TICK_10_MS);
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```
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## Log
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Use serial port with baudrate 115200, 8bit, no parity check.
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+ If SWI level is equal to system timer
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>```c
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> // at main.c
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> #define CONFIG_IRQ_SWI_LEVEL SYS_IRQ_LEVEL_L
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>
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> #define CONFIG_IRQ_SWI_PRIORITY SYS_IRQ_PRIORITY_MIDDEN
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> ```
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- Priority is the same
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```
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Feb 20 2025 12:42:39
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This is a demo projec to configure ECLIC (IRQ Level: SWI == SysTim, Priority: SWI == SysTim)
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-> _mtim_handler 0-th <--- enter ISR of system timer
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<- _mtim_handler <--- leave system timer
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=> _mswi_handler 1-th <--- enter ISR of SWI (wait for system timer finish)
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<= _mswi_handler <--- leave SWI
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-> _mtim_handler 1-th
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<- _mtim_handler
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=> _mswi_handler 2-th
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<= _mswi_handler
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-> _mtim_handler 2-th
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<- _mtim_handler
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=> _mswi_handler 3-th
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<= _mswi_handler
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-> _mtim_handler 3-th
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<- _mtim_handler
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=> _mswi_handler 4-th
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<= _mswi_handler
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-> _mtim_handler 4-th
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<- _mtim_handler
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=> _mswi_handler 5-th
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<= _mswi_handler
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done~~~
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```
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- If SWI priority is greater then system timer
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```
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Feb 20 2025 12:40:04
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This is a demo projec to configure ECLIC (IRQ Level: SWI == SysTim, Priority: SWI > SysTim)
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-> _mtim_handler 0-th <--- enter ISR of system timer
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<- _mtim_handler <--- leave system timer
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=> _mswi_handler 1-th <--- enter ISR of SWI (wait for system timer finish)
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<= _mswi_handler <--- leave SWI
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-> _mtim_handler 1-th
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<- _mtim_handler
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=> _mswi_handler 2-th
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<= _mswi_handler
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-> _mtim_handler 2-th
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<- _mtim_handler
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=> _mswi_handler 3-th
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<= _mswi_handler
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-> _mtim_handler 3-th
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<- _mtim_handler
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=> _mswi_handler 4-th
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<= _mswi_handler
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-> _mtim_handler 4-th
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<- _mtim_handler
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=> _mswi_handler 5-th
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<= _mswi_handler
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done~~~
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```
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- If SWI priority is lower then system timer
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```
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Feb 20 2025 12:44:14
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This is a demo projec to configure ECLIC (IRQ Level: SWI == SysTim, Priority: SWI < SysTim)
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-> _mtim_handler 0-th <--- enter ISR of system timer
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<- _mtim_handler <--- leave system timer
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=> _mswi_handler 1-th <--- enter ISR of SWI (wait for system timer finish)
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<= _mswi_handler <--- leave SWI
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-> _mtim_handler 1-th
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<- _mtim_handler
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=> _mswi_handler 2-th
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<= _mswi_handler
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-> _mtim_handler 2-th
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<- _mtim_handler
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=> _mswi_handler 3-th
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<= _mswi_handler
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-> _mtim_handler 3-th
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<- _mtim_handler
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=> _mswi_handler 4-th
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<= _mswi_handler
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-> _mtim_handler 4-th
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<- _mtim_handler
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=> _mswi_handler 5-th
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<= _mswi_handler
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done~~~
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```
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+ If SWI level is greater than system timer
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>```c
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> // at main.c
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> #define CONFIG_IRQ_SWI_LEVEL SYS_IRQ_LEVEL_M
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>
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> #define CONFIG_IRQ_SWI_PRIORITY SYS_IRQ_PRIORITY_MIDDEN
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> ```
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```
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Feb 20 2025 12:45:53
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This is a demo projec to configure ECLIC (IRQ Level: SWI > SysTim, Priority: SWI == SysTim)
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-> _mtim_handler 0-th <--- enter ISR of system timer
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=> _mswi_handler 1-th <--- Nested interrupt by SWI
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<= _mswi_handler <--- leave SWI
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<- _mtim_handler <--- leave system timer
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-> _mtim_handler 1-th
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=> _mswi_handler 2-th
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<= _mswi_handler
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<- _mtim_handler
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-> _mtim_handler 2-th
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=> _mswi_handler 3-th
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<= _mswi_handler
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<- _mtim_handler
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-> _mtim_handler 3-th
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=> _mswi_handler 4-th
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<= _mswi_handler
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<- _mtim_handler
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-> _mtim_handler 4-th
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=> _mswi_handler 5-th
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<= _mswi_handler
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<- _mtim_handler
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done~~~
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```
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+ If SWI level is lower then system timer
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>```c
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> // at main.c
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> #define CONFIG_IRQ_SWI_LEVEL SYS_IRQ_LEVEL_LL
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>
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> #define CONFIG_IRQ_SWI_PRIORITY SYS_IRQ_PRIORITY_MIDDEN
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> ```
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```
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Feb 20 2025 12:47:11
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This is a demo projec to configure ECLIC (IRQ Level: SWI < SysTim, Priority: SWI == SysTim)
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-> _mtim_handler 0-th <--- enter ISR of system timer
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<- _mtim_handler <--- leave system timer
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=> _mswi_handler 1-th <--- enter ISR of SWI (wait for system timer finish)
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<= _mswi_handler <--- leave SWI
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-> _mtim_handler 1-th
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<- _mtim_handler
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=> _mswi_handler 2-th
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<= _mswi_handler
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-> _mtim_handler 2-th
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<- _mtim_handler
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=> _mswi_handler 3-th
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<= _mswi_handler
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-> _mtim_handler 3-th
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<- _mtim_handler
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=> _mswi_handler 4-th
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<= _mswi_handler
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-> _mtim_handler 4-th
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<- _mtim_handler
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=> _mswi_handler 5-th
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<= _mswi_handler
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done~~~
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```
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