power_usart3_enable() and power_usart3_disable() missing from power.h

[pippo-75]

Hi all, I report a bug(?) in power.h library, distributed with IDE 1.6.10 Win.
The error is:
exit status 1
'Power_usart3_disable' was not declared in this scope

The library lacks the definition for USART3. Solved by adding the following lines (from 852 to 855):

# if defined (__ AVR_HAVE_PRR1_PRUSART3)
# define power_usart3_enable () (PRR1 & = (uint8_t) ~ (1 << PRUSART3))
# define power_usart3_disable () (PRR1 | = (uint8_t) (1 << PRUSART3))
# endif

A problem with the Wire library (Note: the IDE 1.6.9 compiled all, without errors):
To make sure that the IDE 1.6.10 correctly loads the LiquidCrystal_I2C library,
I had to move the content of the src folder to the root (Wire folder).

Now compile fine.

[facchinm]

Hi @pippo-75,
the problem here is avr-libc. This patch (vancegroup-mirrors/avr-libc@12d7b0a) reworked power.h but lost power_usart3* functions. Thanks for reporting, I'm escalating this to avr-libc developers.
About LiquidCrystal_I2C, I had no problem with the version included in the Library Manager (from @marcoschwartz). Which one are you using?

[facchinm]

Problem reported and patch submitted here http://savannah.nongnu.org/bugs/index.php?48898

[JM-FRANCE]

How can this be included in the next build of the Arduino IDE?

[facchinm]

The patch was applied to avr-libc trunk, but not released yet. We'll ship it as soon as Microchip/Atmel releases a toolchain with the patch applied (or sooner, if avr-libc should publish a bugfix version)

[tomjennings]

power_usart3_disable() and power_usart3_enable() remain undefined.

[facchinm]

Latest toolchain for avr contains the fix in avr-libc