jzh/rp2040
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[update] update timer_interrupt demo

Browse Source
This commit is contained in:
zhji 2025-06-02 20:53:18 +08:00
parent 8bc6f6d5db
commit 59ee3ee23f
1 changed files with 10 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
example/peripherals/timer/timer_interrupt/main.c
View File

@ -1,9 +1,10 @@
#include "system.h" #include "resets.h"
#include "irq.h" #include "gpio.h"
#include "uart.h"
#include "timer.h" #include "timer.h"
#include "irq.h"
#include "stdio.h" #include "stdio.h"
#define TIMER_ALARM_ID TIMER_ALARM_0 #define TIMER_ALARM_ID TIMER_ALARM_0
#define TIMER_PERIOD_US (1000 * 1000) #define TIMER_PERIOD_US (1000 * 1000)
@ -16,16 +17,17 @@ void timer_alarm_0_isr(void)
int main(void) int main(void)
{ {
system_init(); reset_unreset_blocks_wait(RESETS_BLOCK_IO_BANK0 | RESETS_BLOCK_UART0 | RESETS_BLOCK_TIMER);
gpio_init(0, GPIO_FUNC_UART | GPIO_PULL_UP | GPIO_DRIVE_4MA); /* UART_TX pin */
gpio_init(1, GPIO_FUNC_UART | GPIO_PULL_UP | GPIO_SCHMITT | GPIO_PAD_IE | GPIO_PAD_OD); /* UART_RX pin */
uart_init(uart0_hw, 6 * 1000 * 1000, UART_DATABITS_8 | UART_PARITY_NONE | UART_STOPBITS_1);
printf("timer_interrupt example\r\n");
timer_count_write(0); timer_count_write(0);
timer_alarm_set(TIMER_ALARM_ID, TIMER_PERIOD_US); timer_alarm_set(TIMER_ALARM_ID, TIMER_PERIOD_US);
timer_int_enable(TIMER_ALARM_ID); timer_int_enable(TIMER_ALARM_ID);
irq_attach(TIMER_IRQ_0, timer_alarm_0_isr); irq_attach(TIMER_IRQ_0, timer_alarm_0_isr);
irq_enable(TIMER_IRQ_0); irq_enable(TIMER_IRQ_0);
while (1) {
}
return 0; return 0;
} }