SDK13.1 UART Driver compile error: 'UART' was not declared in this scope

[fabik111]

Hi,

I'm using nrf52832 and SDK v13.1 and I want to use the uart driver, but I have this compile error:

SDK/components/drivers_nrf/uart/nrf_drv_uart.h:82:19: error: 'UART' was not declared in this scope
         (CONCAT_3(UART, id, _CONFIG_USE_EASY_DMA) == 1 ? \

Apparently the line 82 depends on the define "UARTE_PRESENT".

I would like to use only the UART mode not also the UARTE mode, so I'm finding a way to exclude UARTE mode. But, I don't think this solution could be solved my compile problem

This is my sdk_config.h (I will post only the section related to UART)

// <e> UART_ENABLED - nrf_drv_uart - UART/UARTE peripheral driver
//==========================================================
#ifndef UART_ENABLED
#define UART_ENABLED 1
#endif
#if  UART_ENABLED
// <o> UART_DEFAULT_CONFIG_HWFC  - Hardware Flow Control
 
// <0=> Disabled 
// <1=> Enabled 

#ifndef UART_DEFAULT_CONFIG_HWFC
#define UART_DEFAULT_CONFIG_HWFC 0
#endif

// <o> UART_DEFAULT_CONFIG_PARITY  - Parity
 
// <0=> Excluded 
// <14=> Included 

#ifndef UART_DEFAULT_CONFIG_PARITY
#define UART_DEFAULT_CONFIG_PARITY 0
#endif

// <o> UART_DEFAULT_CONFIG_BAUDRATE  - Default Baudrate
 
// <323584=> 1200 baud 
// <643072=> 2400 baud 
// <1290240=> 4800 baud 
// <2576384=> 9600 baud 
// <3862528=> 14400 baud 
// <5152768=> 19200 baud 
// <7716864=> 28800 baud 
// <10289152=> 38400 baud 
// <15400960=> 57600 baud 
// <20615168=> 76800 baud 
// <30801920=> 115200 baud 
// <61865984=> 230400 baud 
// <67108864=> 250000 baud 
// <121634816=> 460800 baud 
// <251658240=> 921600 baud 
// <268435456=> 57600 baud 

#ifndef UART_DEFAULT_CONFIG_BAUDRATE
#define UART_DEFAULT_CONFIG_BAUDRATE 30801920
#endif

// <o> UART_DEFAULT_CONFIG_IRQ_PRIORITY  - Interrupt priority
 

// <i> Priorities 0,2 (nRF51) and 0,1,4,5 (nRF52) are reserved for SoftDevice
// <0=> 0 (highest) 
// <1=> 1 
// <2=> 2 
// <3=> 3 
// <4=> 4 
// <5=> 5 
// <6=> 6 
// <7=> 7 

#ifndef UART_DEFAULT_CONFIG_IRQ_PRIORITY
#define UART_DEFAULT_CONFIG_IRQ_PRIORITY 7
#endif

// <q> UART_EASY_DMA_SUPPORT  - Driver supporting EasyDMA
 

#ifndef UART_EASY_DMA_SUPPORT
#define UART_EASY_DMA_SUPPORT 1
#endif

// <q> UART_LEGACY_SUPPORT  - Driver supporting Legacy mode
 

#ifndef UART_LEGACY_SUPPORT
#define UART_LEGACY_SUPPORT 1
#endif

// <e> UART0_ENABLED - Enable UART0 instance
//==========================================================
#ifndef UART0_ENABLED
#define UART0_ENABLED 1
#endif
#if  UART0_ENABLED
// <q> UART0_CONFIG_USE_EASY_DMA  - Default setting for using EasyDMA
 

#ifndef UART0_CONFIG_USE_EASY_DMA
#define UART0_CONFIG_USE_EASY_DMA 1
#endif

#endif //UART0_ENABLED
// </e>

// <e> UART_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef UART_CONFIG_LOG_ENABLED
#define UART_CONFIG_LOG_ENABLED 0
#endif
#if  UART_CONFIG_LOG_ENABLED
// <o> UART_CONFIG_LOG_LEVEL  - Default Severity level
 
// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug 

#ifndef UART_CONFIG_LOG_LEVEL
#define UART_CONFIG_LOG_LEVEL 3
#endif

// <o> UART_CONFIG_INFO_COLOR  - ANSI escape code prefix.
 
// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White 

#ifndef UART_CONFIG_INFO_COLOR
#define UART_CONFIG_INFO_COLOR 0
#endif

// <o> UART_CONFIG_DEBUG_COLOR  - ANSI escape code prefix.
 
// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White 

#ifndef UART_CONFIG_DEBUG_COLOR
#define UART_CONFIG_DEBUG_COLOR 0
#endif

#endif //UART_CONFIG_LOG_ENABLED
// </e>

#endif //UART_ENABLED
// </e>

Could you help me?
Thank you

[Jørgen Holmefjord]

Hi,

It looks like there is a symbol named UART somewhere else in your application, which is causing issues for the macro that uses UART as a name "variable" to check if EasyDMA is enabled for the UART instance. Please check that there are no symbols with the name UART in your application.

To not use UARTE, you can disable all UARTx_CONFIG_USE_EASY_DMA configs and disable UART_EASY_DMA_SUPPORT.

Best regards,
Jørgen

[fabik111]

Thank you Jørgen.

I have check it and there aren't other UART symbols in my project. Also excluding  UARTE mode didn't solve the error.
I include the 

nrf_drv_uart.h

 inside a cpp source file (I need to use the uart functions inside a class), so this header will be compiled with the 

extern "C" {

, could be this the problem?

Fabio

[Jørgen Holmefjord]

That could be an issue. The SDK is not written to support C++, and you may experience issues like this if you try to use that.

If you can upload your project, I can take a look and see if I find any solutions to the error.

[fabik111]

Thank you again Jørgen
Unfortunately I can't post the code, but I've solved using the UART HAL!
I think, I could have solved also setting some strange compile flags

Thank you for support