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Welcome to Arduino_RT-Thread Discussions! #6

onelife started this conversation in General
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👋 Welcome!

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Hi, onelife,thank you for you good work!
could you pls provide an interrupt function sample for rt-thread? my hardware is Arduino DUE board. I found there's no interrupt in all the samples.
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onelife Dec 23, 2022
Maintainer Author

Hi @danilliu-sudo,

Thanks for your interest in the Arduino RT-Thread library project!

The library is trying to utilize as much of the Arduino framework and libraries as possible (to reduce maintenance costs), and most of the common interrupts are handled by the framework. Therefore only a few interrupts are directly handled by the library.

You may find the examples in the driver code. E.g.,

static void usart_isr(struct rt_serial_device *serial) {
struct bsp_usart_contex *ctx;
RT_ASSERT(serial != RT_NULL);
ctx = (struct bsp_usart_contex *) serial->parent.user_data;
RT_ASSERT(ctx != RT_NULL);
if ((RESET != usart_interrupt_flag_get(ctx->usart_base, USART_INT_FLAG_RBNE)) && \
(RESET != usart_flag_get(ctx->usart_base, USART_FLAG_RBNE))) {
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
usart_interrupt_flag_clear(ctx->usart_base, USART_INT_FLAG_RBNE);
usart_flag_clear(ctx->usart_base, USART_FLAG_RBNE);
} else {
if (RESET != usart_flag_get(ctx->usart_base, USART_FLAG_CTSF)) {
usart_flag_clear(ctx->usart_base, USART_FLAG_CTSF);
}
if (RESET != usart_flag_get(ctx->usart_base, USART_FLAG_LBDF)) {
usart_flag_clear(ctx->usart_base, USART_FLAG_LBDF);
}
if (RESET != usart_flag_get(ctx->usart_base, USART_FLAG_TC)) {
usart_flag_clear(ctx->usart_base, USART_FLAG_TC);
}
}
}
/* Public functions ----------------------------------------------------------*/
#if CONFIG_USING_UART0
void USART0_IRQHandler(void) {
rt_interrupt_enter();
usart_isr(&usart_dev[USART_CH0]);
rt_interrupt_leave();
}
#endif
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