Hello all, my compiler can't find the definition to timer functions : nrf_drv_timer_init(), nrf_drv_timer_extended_compare() and nrf_drv_timer_enable(). bellow my code :
/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
*
* The information contained herein is property of Nordic Semiconductor ASA.
* Terms and conditions of usage are described in detail in NORDIC
* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
*
* Licensees are granted free, non-transferable use of the information. NO
* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
* the file.
*
*/
/** @file
* @defgroup pwm_example_main main.c
* @{
* @ingroup pwm_example
*
* @brief PWM Example Application main file.
*
* This file contains the source code for a sample application using PWM.
*/
#include <stdio.h>
#include <string.h>
#include "nrf_drv_pwm.h"
#include "app_util_platform.h"
#include "app_error.h"
#include "boards.h"
#include "bsp.h"
#include "nrf_drv_clock.h"
#define NRF_LOG_MODULE_NAME "APP"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_drv_gpiote.h"
#include "nrf_drv_timer.h"
#define PWM_ACT1_PIN 30
#define TOP_VALUE_PWM 100
#define PERIOD_PWM NRF_PWM_CLK_4MHz
#define pwmDuty 25
static nrf_drv_pwm_t PWM = NRF_DRV_PWM_INSTANCE(0);
const nrf_drv_timer_t TIMER_PWM = NRF_DRV_TIMER_INSTANCE(0); /*<creating a timer driver instance>*/
static nrf_pwm_values_common_t seq0_values=100-pwmDuty;
nrf_pwm_sequence_t const seq0 =
{
.values.p_common = &(seq0_values),
.length = NRF_PWM_VALUES_LENGTH(seq0_values),
.repeats = 1,
.end_delay = 0
};
void timer_pwm_event_handler(nrf_timer_event_t event_type, void* p_context)
{
switch (event_type)
{
case NRF_TIMER_EVENT_COMPARE0:
break;
default:
//Do nothing.
break;
}
}
void init_timer()
{
uint32_t time_ms = 100; //Time(in miliseconds) between consecutive compare events.
uint32_t time_ticks;
uint32_t err_code = NRF_SUCCESS;
nrf_drv_timer_config_t timer_cfg;
timer_cfg.frequency = 0; // 16MHz
timer_cfg.mode = 0; //Timer
timer_cfg.bit_width = 0; // 16 bits
timer_cfg.interrupt_priority = 3; // priotity 3
err_code = nrf_drv_timer_init(&TIMER_PWM, &timer_cfg, timer_pwm_event_handler);
APP_ERROR_CHECK(err_code);
time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_PWM, time_ms);
nrf_drv_timer_extended_compare(
&TIMER_PWM,
NRF_TIMER_CC_CHANNEL0,
time_ticks,
NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK,
true);
nrf_drv_timer_enable(&TIMER_PWM);
//nrf_drv_timer_disable
}
static void demo1(void)
{
uint32_t err_code;
nrf_drv_pwm_config_t const config0 =
{
.output_pins =
{
PWM_ACT1_PIN, // channel 0
NRF_DRV_PWM_PIN_NOT_USED,
NRF_DRV_PWM_PIN_NOT_USED,
NRF_DRV_PWM_PIN_NOT_USED,
},
.irq_priority = APP_IRQ_PRIORITY_LOW,
.base_clock = PERIOD_PWM,
.count_mode = NRF_PWM_MODE_UP,
.top_value = TOP_VALUE_PWM,
.load_mode = NRF_PWM_LOAD_COMMON,
.step_mode = NRF_PWM_STEP_AUTO
};
err_code = nrf_drv_pwm_init(&PWM, &config0, NULL);
APP_ERROR_CHECK(err_code);
nrf_drv_pwm_simple_playback(&PWM, &seq0, 1,
NRF_DRV_PWM_FLAG_LOOP);
}
/*void update_pwm(int16_t duty_cycle)
{
duty_cycle = 100-duty_cycle;
nrf_drv_pwm_simple_playback(&PWM, &seq0, 1,
NRF_DRV_PWM_FLAG_LOOP);
}*/
int main(void)
{
init_timer();
demo1();
while(1)
{
}
}
/** @} */
the error message is :
/home/ac/Desktop/test_nRF52/examples/peripheral/pwm_driver/pca10040/blank/armgcc/../../../main.c:82: undefined reference to `nrf_drv_timer_init'
/home/ac/Desktop/test_nRF52/examples/peripheral/pwm_driver/pca10040/blank/armgcc/../../../main.c:87: undefined reference to `nrf_drv_timer_extended_compare'
/home/ac/Desktop/test_nRF52/examples/peripheral/pwm_driver/pca10040/blank/armgcc/../../../main.c:94: undefined reference to `nrf_drv_timer_enable'
Can someone help me please? :)
