- Wed Mar 01, 2017 10:23 am
#63186
#include "pwm.h" (in code i added pwm.h lib)
but when i'm using get_pwm_version(); or pwm_start();
or any pwm function then i'm getting following error---
/tmp/ccoG1uRV.ltrans0.ltrans.o:(.literal+0xc0): undefined reference to get_pwm_version' /tmp/ccoG1uRV.ltrans0.ltrans.o:(.literal+0xc4): undefined reference topwm_start'
/tmp/ccoG1uRV.ltrans0.ltrans.o: In function user_init': <artificial>:(.text+0x2c1): undefined reference toget_pwm_version'
.text+0x2c7): undefined reference to `pwm_start'
collect2: error: ld returned 1 exit status
make: *** [image.elf] Error 1
EUA wrote:You need to edit some settings.
For example you need to pin # by::Code: Select all#define PWM_0_OUT_IO_MUX PERIPHS_IO_MUX_GPIO2_U
#define PWM_0_OUT_IO_NUM 2
#define PWM_0_OUT_IO_FUNC FUNC_GPIO2
#define PWM_CHANNEL 1
PWM_CHANNEL 1 means you are gonna use only one PWM in your program.
in user_init, you can:Code: Select alluint8_t duty=0;
pwm_init( 150, &duty);
pwm_start();
Than in anywhere to adjust PWM:Code: Select allpwm_set_duty(duty, 0);
pwm_start();
You have to run pwm_start function after changing duty cycle.
Otherwise it doesn't run.
Here is sample code:Code: Select all#include <ets_sys.h>
#include <osapi.h>
#include <os_type.h>
#include <gpio.h>
#include "user_interface.h"
#define user_procTaskPrio 0
#define user_procTaskQueueLen 1
os_event_t user_procTaskQueue[user_procTaskQueueLen];
// see eagle_soc.h for these definitions
#define PWM_0_OUT_IO_MUX PERIPHS_IO_MUX_GPIO2_U
#define PWM_0_OUT_IO_NUM 2
#define PWM_0_OUT_IO_FUNC FUNC_GPIO2
#define PWM_CHANNEL 1
LOCAL uint8_t led_state=0;
LOCAL uint8_t duty=0;
//Main code function for heartbeat LED on GPIO2
void ICACHE_FLASH_ATTR
loop(os_event_t *events)
{
os_delay_us(10000);
led_state ? duty-- : duty++;
if (duty >= 255 ) led_state=1;
else if (duty <= 10 ) led_state=0;
pwm_set_duty(duty, 0);
pwm_start();
system_os_post(user_procTaskPrio, 0, 0 );
}
void user_init(void)
{
pwm_init( 150, &duty);
pwm_start();
//Start os task
system_os_task(loop, user_procTaskPrio,user_procTaskQueue, user_procTaskQueueLen);
system_os_post(user_procTaskPrio, 0, 0 );
}
#include "pwm.h" (in code i added pwm.h lib)
but when i'm using get_pwm_version(); or pwm_start();
or any pwm function then i'm getting following error---
/tmp/ccoG1uRV.ltrans0.ltrans.o:(.literal+0xc0): undefined reference to get_pwm_version' /tmp/ccoG1uRV.ltrans0.ltrans.o:(.literal+0xc4): undefined reference topwm_start'
/tmp/ccoG1uRV.ltrans0.ltrans.o: In function user_init': <artificial>:(.text+0x2c1): undefined reference toget_pwm_version'
.text+0x2c7): undefined reference to `pwm_start'collect2: error: ld returned 1 exit status
make: *** [image.elf] Error 1
