0

有12个LED通过移位寄存器HC595连接，使用的模块是nrf51822（蓝牙模块）。我希望 LED 在 3 秒间隔后熄灭。我的代码如下 -

#include "main.h"
#include "uart.h"
#include "nrf_delay.h"
#include "rc522.h"
#include "hc595.h"
#include "tsm12m.h"
#include "iic.h"
#include "app_timer.h"
#define APP_TIMER_PRESCALER              0                                          /**< Value of the RTC1 PRESCALER register. */
#define APP_TIMER_OP_QUEUE_SIZE          6    

APP_TIMER_DEF(LEDOps);
static void timer_a_handler(void * p_context)
{
    lightAllLEDs();
}
static void create_timers()
{  
    uint32_t err_code;

    // Create timers
    err_code = app_timer_create(&LEDOps,
                                APP_TIMER_MODE_SINGLE_SHOT,
                                timer_a_handler);
    APP_ERROR_CHECK(err_code);
}
void timers_init(){
    uint32_t err_code;
// Initialize the application timer module.
        APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);
        create_timers();
}
void timer_a_start(){
    uint32_t err_code;
    err_code = app_timer_start(LEDOps, APP_TIMER_TICKS(3,APP_TIMER_PRESCALER), NULL);
  APP_ERROR_CHECK(err_code);
}

int main(void)
{
        uartInit();
      TSM12_Init(); 
      HC595_Init();
        timers_init();
        timer_a_start();
      UartSendstring("123456789");   
    printf("timer stopped!!");  
      app_timer_stop(LEDOps);
    while(1)
    {
             TSM12_Handle();
             nrf_delay_ms(1);
    }
}

上面的代码似乎不起作用。我是模块新手。请提供解决方案帮助。

4

0 回答 0