ESP8266 Developer Zone

Re: SDK 1.1.1 linker reference missing

2015-06-24T05:11:39+08:00

Yup solved that one thanks. Other issues with new PWM affecting other code such as serial LED even after setting values for duty to zero....

Statistics: Posted by scargill — Wed Jun 24, 2015 5:11 am

Re: SDK 1.1.1 linker reference missing

2015-06-24T04:54:42+08:00

use only "pwm" not "libpwm" in LIB makefile.

Statistics: Posted by FrenkR — Wed Jun 24, 2015 4:54 am

Re: SDK 1.1.1 linker reference missing

2015-06-23T10:39:39+08:00

Hi, scargill,

Was your problem solved ?

libpwm.a is in \esp_iot_sdk_v1.1.1\lib

makefile in \esp_iot_sdk_v1.1.1\examples\IoT_Demo is updated.

Statistics: Posted by ESP_Faye — Tue Jun 23, 2015 10:39 am

Re: SDK 1.1.1 linker reference missing

2015-06-18T22:10:48+08:00

Well, I have upgrade in there - and libpwm.a is still missing...

LIBS = c gcc hal phy pp net80211 lwip wpa upgrade main ssl libpwm

I get an error to say that libpwm cannot be found - and a quick search of the sdk tree shows the file is not there.

Does anyone have a simple answer to this - you'd think it was a secret....

Statistics: Posted by scargill — Thu Jun 18, 2015 10:10 pm

Re: SDK 1.1.1 linker reference missing

2015-06-11T10:08:33+08:00

Hi,

Sorry that I didn't figure out it's the makefile problem at first time.

Thanks for your advice, I'll add it into the release note !

Statistics: Posted by ESP_Faye — Thu Jun 11, 2015 10:08 am

Re: SDK 1.1.1 linker reference missing

2015-06-11T09:09:02+08:00

Problem solved confirmed:

Yep, pwm is missing from the SDK version 1.1.1 Makefile for the IoT_Demo example. LIB section.

It must be added for a successful compile.

Statistics: Posted by surfnturf57 — Thu Jun 11, 2015 9:09 am

Re: SDK 1.1.1 linker reference missing

2015-06-10T23:00:59+08:00

problem solved, "makefile" should have specified all libs that you use. In my case inside "LIBS" section "upgrade" was missing. This one hence reflects to "libupgrade.a" in /lib folder.
Rgds,
Frenk

Statistics: Posted by FrenkR — Wed Jun 10, 2015 11:00 pm

Re: SDK 1.1.1 linker reference missing

2015-06-10T22:20:34+08:00

Yeah, it is obvious from the 1.1.1 notes that the PWM API has been revised.

Code:

Added APIs：
1.PWM APIs： 
Updated： pwm_init，add parameter to set PWM channel and GPIO pin 
Added：
（1）get_pwm_version：get version information of PWM driver
（2）pwm_set_period：set PWM period
（3）pwm_get_period：get PWM period

and the header file pwm.h does provide prototypes for the functions that the linker indicates there is an "undefined reference"

These functions are in the lib file "libpwm.a" but the linker is not finding them.

I am not smart enough to figure out where the root problem lies. Maybe something needs to be added to the makefile. Sure would be nice if the example IoT_Demo included with SDK 1.1.1 could be compiled as it has been provided.

Statistics: Posted by surfnturf57 — Wed Jun 10, 2015 10:20 pm

Re: SDK 1.1.1 linker reference missing

2015-06-10T18:15:20+08:00

Hi,
I have read all release notes, but I still didn't find any solution for invalid references during linking. Can you give us a hint or provide additional libs that have those funcitons implemented?

Rgds,
Frenk

Statistics: Posted by FrenkR — Wed Jun 10, 2015 6:15 pm

Re: SDK 1.1.1 linker reference missing

2015-06-10T10:01:30+08:00

Hi,

So sorry for the inconvenience，

You can get the introduction of APIs in document "2C-ESP8266__SDK__Programming Guide" in \esp_iot_sdk\document

Please pay attention on the release note of SDK_v1.1.0 http://bbs.espressif.com/viewtopic.php?f=5&t=481

And the release note of the latest SDK_v1.1.1 http://bbs.espressif.com/viewtopic.php?f=5&t=554

These release notes are also in the SDK packet, unzip "esp_iot_sdk" , there is a "release_note.txt" which shows the change list of each SDK version.

Thanks for your interest in ESP8266 !

Statistics: Posted by ESP_Faye — Wed Jun 10, 2015 10:01 am

Re: SDK 1.1.1 linker reference missing

2015-06-10T07:54:43+08:00

I commented out all the "user_light" references (that I am not using anyway) and I've boiled this down to a common thread. I now get the same "undefined reference" from the linker in both versions of my SDK Test App (when compiling with SDK Version 1.1.1):

1. IoT_Demo from SDK Version 1.1.1 example
2. IoT_Demo, customized for my Application, that compiles correctly with SDK Version 1.0.1 24-April-2015

Code:

16:44:58 **** Build of configuration Default for project WebServerAP ****
mingw32-make.exe -f C:/Espressif/myProjects/WebServerAP/Makefile all 
LD build/app.out
c:/Espressif/ESP8266_SDK/lib\libmain.a(app_main.o): In function `user_uart_wait_tx_fifo_empty':
(.irom0.text+0x340): undefined reference to `user_rf_pre_init'
c:/Espressif/ESP8266_SDK/lib\libmain.a(app_main.o): In function `user_uart_wait_tx_fifo_empty':
(.irom0.text+0x45c): undefined reference to `user_rf_pre_init'
collect2.exe: error: ld returned 1 exit status
C:/Espressif/myProjects/WebServerAP/Makefile:224: recipe for target 'build/app.out' failed
mingw32-make.exe: *** [build/app.out] Error 1

16:45:00 Build Finished (took 2s.13ms)

Very frustrating - Houston(EspressIf)---we have a problem!

Help!

Statistics: Posted by surfnturf57 — Wed Jun 10, 2015 7:54 am

Re: SDK 1.1.1 linker reference missing

2015-06-09T23:02:03+08:00

I have experienced the same problem. This is the IoT_Demo that is included with the SDK 1.1.1 release. One would expect it to link properly!

Anxiously awaiting a resolution.

The last SDK version I have had success with is 1.0.1 24-Apr-15.

Statistics: Posted by surfnturf57 — Tue Jun 09, 2015 11:02 pm

SDK 1.1.1 linker reference missing

2015-06-09T20:34:52+08:00

after downoad and upgrade "esp_iot_sdk_v1.1.0_15_05_26.zip", I am getting following messages:

Code:

user_upgrade.c:(.irom0.text+0x6c): undefined reference to `system_upgrade_init'
user_upgrade.c:(.irom0.text+0x68): undefined reference to `system_upgrade_start'

or when buiding IOT demo:

Code:

LD build/app.out
build/app_app.a(user_light.o): In function `user_light_get_duty':
user_light.c:(.irom0.text+0x14): undefined reference to `pwm_set_duty'
user_light.c:(.irom0.text+0x18): undefined reference to `pwm_get_duty'
build/app_app.a(user_light.o): In function `user_light_set_duty':
\examples\IoT_Demo/user/user_light.c:46: undefined reference to `pwm_set_duty'
\examples\IoT_Demo/user/user_light.c:47: undefined reference to `pwm_get_duty'

build/app_app.a(user_light.o): In function `user_light_get_period':
\examples\IoT_Demo/user/user_light.c:62: undefined reference to `pwm_set_period'
\examples\IoT_Demo/user/user_light.c:63: undefined reference to `pwm_get_period'
build/app_app.a(user_light.o): In function `user_light_set_period':
\examples\IoT_Demo/user/user_light.c:73: undefined reference to `pwm_set_period'
\examples/IoT_Demo/Makefile:225: recipe for target 'build/app.out' failed
\examples\IoT_Demo/user/user_light.c:73: undefined reference to `pwm_get_period'
\examples\IoT_Demo/user/user_light.c:79: undefined reference to `pwm_start'

build/app_app.a(user_light.o): In function `user_light_restart':
\examples\IoT_Demo/user/user_light.c:84: undefined reference to `pwm_start'
\examples\IoT_Demo/user/user_light.c:89: undefined reference to `pwm_init'
\examples\IoT_Demo/user/user_light.c:89: undefined reference to `set_pwm_debug_en'
\examples\IoT_Demo/user/user_light.c:89: undefined reference to `get_pwm_version'

build/app_app.a(user_light.o): In function `user_light_init':
\examples\IoT_Demo/user/user_light.c:100: undefined reference to `pwm_init'
\examples\IoT_Demo/user/user_light.c:123: undefined reference to `set_pwm_debug_en'
\examples\IoT_Demo/user/user_light.c:123: undefined reference to `get_pwm_version'

build/app_app.a(user_light_adj.o):(.text+0x20): undefined reference to `pwm_start'
build/app_app.a(user_light_adj.o):(.text+0x24): undefined reference to `pwm_get_duty'
build/app_app.a(user_light_adj.o): In function `light_dh_pwm_adj_proc':
\examples\IoT_Demo/user/user_light_adj.c:133: undefined reference to `pwm_start'
\examples\IoT_Demo/user/user_light_adj.c:136: undefined reference to `pwm_get_duty'

build/app_app.a(user_light_adj.o): In function `light_save_target_duty':
\examples\IoT_Demo/user/user_light_adj.c:67: undefined reference to `pwm_get_period'

build/app_app.a(user_light_adj.o): In function `light_pwm_smooth_adj_proc':
\examples\IoT_Demo/user/user_light_adj.c:179: undefined reference to `pwm_get_duty'

Can you please update libs to have correct entries, please?
Rgds,
Frenk

Statistics: Posted by FrenkR — Tue Jun 09, 2015 8:34 pm