forked from Elron_dev/elbear_arduino_bsp
klassents
0fbfd77518
- начальный загрузчик для плат elbear, elsomik обновлен до версии 0.2.0 - исключено появление краткосрочных просадок при работе ШИМ с максимальным коэффициентом заполнения - добавлена возможность пропускать код стандартного обработчика прерываний при использовании пользовательского обработчика - добавлена возможность конфигурирования вывода на вход с притяжкой к земле (INPUT_PULLDOWN) - исправление известных ошибок
98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
#include "mik32_hal_irq.h"
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#include "wiring_LL.h"
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// isr functions
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extern void serial_interrupt_handler(uint8_t uartNumInt);
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extern void gpio_interrupt_handler(void);
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extern void tone_interrupt_handler(void);
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void __attribute__((weak)) wire_interrupt_handler(uint8_t num)
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{
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// dummy function for case when wire library is not in use
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}
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void __attribute__((weak)) servo_interrupt_handler(void)
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{
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// dummy function for case when servo library is not in use
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}
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void __attribute__((weak)) IRremote_interrupt_handler(void)
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{
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// dummy function for case when IRremote library is not in use
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}
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bool __attribute__((section(".ram_text"), weak)) ISR(void)
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{
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/*
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A dummy function for the case when additional interrupts are not used in the project.
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In the project, you need to create a function of the form:
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extern "C" __attribute__((section(".ram_text"))) bool ISR(void)
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{
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if (EPIC_CHECK_TIMER16_1())
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{
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// timer16 is taken as an example
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if (TIM16_GET_ARRM_INT_STATUS(htimer16_1_))
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{
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// necessary actions
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}
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// reset timer interrupt flags
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TIM16_CLEAR_INT_MASK(htimer16_1_, 0xFFFFFFFF);
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}
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return false;
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}
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If you don't need to call standard trap_handler() code, you can return true from this function
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and trap_handler() code will be missed. But you must carefully clear interrupt flags by yourself
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in your custom ISR() function.
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libraries required to use this example:
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#include "mik32_hal_timer16.h"
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#include "wiring_LL.h"
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*/
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return false;
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}
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// ---------------------------------------------- //
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void __attribute__((noinline, section(".ram_text"), optimize("O3"))) trap_handler (void)
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{
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// custom interrupt
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if(ISR())
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{
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// reset all interrupts and miss trap_handler() code
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EPIC_CLEAR_ALL();
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return;
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}
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// gpio interrupt
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if (EPIC_CHECK_GPIO_IRQ())
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gpio_interrupt_handler();
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// IRremote timer interrupt
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if (EPIC_CHECK_TIMER16_0())
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IRremote_interrupt_handler();
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// tone timer interrupt
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if (EPIC_CHECK_TIMER16_1())
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tone_interrupt_handler();
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// servo timer interrupt
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if (EPIC_CHECK_TIMER16_2())
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servo_interrupt_handler();
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// uart0 interrupt
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if (EPIC_CHECK_UART_0())
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serial_interrupt_handler(0);
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// uart1 interrupt
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if (EPIC_CHECK_UART_1())
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serial_interrupt_handler(1);
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// i2c0 interrupt
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if (EPIC_CHECK_I2C_0())
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wire_interrupt_handler(0);
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// i2c1 interrupt
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if (EPIC_CHECK_I2C_1())
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wire_interrupt_handler(1);
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// reset all interrupts
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EPIC_CLEAR_ALL();
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}
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